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SSRN 2024年

作者： Chu, Peng Xie, Heping Kong, Lingwei Hu, Jianjun Deng, Yanshao Li, Cunbao State Key Laboratory of Intelligent Construction and Healthy Operation and Maintenance of Deep Underground Engineering Institute of Deep Earth Sciences and Green Energy Shenzhen University Shenzhen518060 China Guangdong Provincial Key Laboratory of Deep Earth Sciences and Geothermal Energy Exploitation and Utilization College of Civil and Transportation Engineering Shenzhen University Shenzhen518060 China Shenzhen Key Laboratory of Deep Underground Engineering Sciences and Green Energy Shenzhen University Shenzhen518060 China

Accurately capturing the anisotropic fracture modes of laminated rocks under various stress paths, such as initiation, propagation, branching, and coalescence, is a challenging task. To address this, this study develops an anisotropic fracture phase-field model that considers tensile, shear, compressive–shear, and mixed fracture mechanisms, aiming to precisely predict the fracture behavior of laminated rocks. A structural tensor that characterizes the anisotropy of the rock is constructed and incorporated into a crack density function, allowing the anisotropic fracture energy of laminated rocks in arbitrary directions to be quantified through rigorous mathematical methods. Following this, based on the spectral decomposition of the strain tensor and the shear failure energy criterion, the crack driving force equations under tensile–shear and compressive–shear actions are derived, respectively, representing the different fracture mechanisms. Finally, by applying the anisotropic fracture energy and crack propagation driving force within the framework of the fracture variational principle, a phase-field model depicting the intricate fracture behavior of laminated rocks under varying stress paths is developed. The superiority of the proposed model in simulating the anisotropic fracture behavior of laminated rocks under tensile, tensile–shear, compressive–shear, and mixed loading conditions is validated through comparative analyses of the experimental results and other existing models. Furthermore, the impacts of the anisotropic properties, stress paths, and ratios of the critical energy release rate on the crack propagation of laminated rocks are analyzed using the established model. This study provides an effective tool for understanding and predicting the anisotropic fracture behavior of laminated rocks under different loading conditions. © 2024, The Authors. All rights reserved.

关键词： Anisotropy

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巧妙的稀掺杂策略实现高性能GeTe热电材料

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science Bulletin 2024年第8期69卷 1037-1049页

作者：钟锦璇杨晓玉吕途梁格格张胜楠张朝华敖伟琴刘福生南鹏飞葛炳辉胡利鹏 College of Materials Science and Engineering Shenzhen Key Laboratory of Special Functional MaterialsGuangdong Research Center for Interfacial Engineering of Functional MaterialsGuangdong Provincial Key Laboratory of Deep Earth Sciences and Geothermal Energy Exploitation and UtilizationInstitute of Deep Earth Sciences and Green EnergyShenzhen UniversityShenzhen 518060China Information Materials and Intelligent Sensing Laboratory of Anhui Province Key Laboratory of Structure and Functional Regulation of Hybrid Materials of Ministry of EducationInstitutes of Physical Science and Information TechnologyAnhui UniversityHefei 230601China Superconducting Materials Research Center Northwest Institute for Nonferrous Metal ResearchXi’an 710016China

In thermoelectrics,doping is essential to augment the figure of *** strategy,predomina ntly heavy doping,aims to optimize carrier concentration and restrain lattice thermal ***,this tactic can severely hamper carrier transport due to pronounced point defect scattering,particularly in materials with inherently low carrier ***,dilute doping,although minimally affecting carrier mobility,frequently fails to optimize other vital thermoelectric ***,we present a more nuanced dilute doping strategy in GeTe,leveraging the multifaceted roles of small-size metal atoms.A mere 4%CuPbSbTe_(3)introduction into GeTe swiftly suppresses rhombohedral distortion and optimizes carrier concentration through the aid of Cu ***,the formation of multiscale microstructures,including zero-dimensional Cu interstitials,one-dimensional dislocations,two-dimensional planar defects,and three-dimensional nanoscale amorphous GeO_(2)and Cu_(2)GeTe_(3)precipitates,along with the ensuing lattice softening,contributes to an ultralow lattice thermal ***,dilute CuPbSbTe_(3)doping incurs only a marginal decrease in carrier *** trace Cd doping,employed to alleviate the bipolar effect and align the valence bands,yields an impressive figure-of-merit of 2.03 at 623 K in(Ge_(0.97)Cd_(0.03)Te)_(0.96)(CuPbSbTe_(3))_(0.04).This leads to a high energyconversion efficiency of 7.9%and a significant power density of 3.44 W cm^(-2)at a temperature difference of 500 *** results underscore the invaluable insights gained into the constructive role of nuanced dilute doping in the concurrent tuning of carrier and phonon transport in GeTe and other thermoelectric materials.

关键词： Thermoelectric GeTe Dilute doping Interstitial atoms Lattice softening

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Regulating electronic structure of CoN_(4)with axial Co-S for promoting oxygen reduction and Zn-air battery performance

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Nano Research 2023年第4期16卷 4211-4218页

作者： Chang Chen Zhiqiang Chen Junxi Zhong Xin Song Dongfang Chen Shoujie Liu Weng-Chon Cheong Jiazhan Li Xin Tan Chang He Jiaqi Zhang Di Liu Qiuhua Yuan Chen Chen Qing Peng Yadong Li Department of Chemistry Tsinghua UniversityBeijing 100084China Beijing Key Laboratory of Research and Application for Aerospace Green Propellants Beijing Institute of Aerospace Testing TechnologyBeijing 100048China College of Chemistry and Environmental Engineering Shenzhen UniversityShenzhen 518060China State Key Laboratory of Automtive Safety and Energy Tsinghua UniversityBeijing 100084China Chemistry and Chemical Engineering Guangdong Laboratory Shantou 515031China Department of Physics and Chemistry Faculty of Science and TechnologyUniversity of MacaoMacao 999078China

Regulating the coordination environment of transition-metal based materials in the axial direction with heteroatoms has shown great potential in boosting the oxygen reduction reaction(ORR).The coordination configuration and the regulation method are pivotal and ***,we report a combined strategy of matrix-activization and controlled-induction to modify the CoN_(4)site by axial coordination of Co-S(Co1N_(4)-S_(1)),which was validated by the aberration-corrected electron microscopy and X-ray absorption fine structure *** optimal Co1N_(4)-S_(1)exhibits an excellent alkaline ORR activity,according to the half-wave potential(0.897 V *** hydrogen electrode(RHE)),Tafel slope(24.67 mV/dec),and kinetic current ***,the Co1N_(4)-S_(1)based Zn-air battery displays a high power density of 187.55 mW/cm^(2)and an outstanding charge-discharge cycling stability for 160 h,demonstrating the promising application *** calculations indicate that the better regulation of CoN_(4)on electronic structure and thus the highly efficient ORR performance can be achieved by axial Co-S.

关键词： electronic structure regulation axial Co-S coordination single-atom Co oxygen reduction Zn-air battery

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Reversible aqueous aluminum metal batteries enabled by a water-in-salt electrolyte

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green energy & Environment 2024年第7期9卷 1183-1191页

作者： Wenjing Tang Lijun Deng Longyuan Guo Shoubin Zhou Qinhai Jiang Jiayan Luo Shanghai Key Lab of Advanced High-Temperature Materials and Precision Forming State School of Materials Science and EngineeringShanghai Jiao Tong UniversityShanghai200240China School of Science Harbin Institute of TechnologyShenzhenGuangdong518055China Key Laboratory for Green Chemical Technology of Ministry of Education School of Chemical Engineering and TechnologyTianjin UniversityTianjin300072China HuaFu High Technology Energy Storage CO. LTDYangzhou225600China Shanghai Jiao Tong University Shaoxing Research Institute of Renewable Energy and Molecular Engineering Shaoxing312000China

Aluminum(Al),the most abundant metallic element on the earth crust,has been reckoned as a promising battery material for its the highest theoretical volume capacity(8046 mAh cm^(-3)).Being rechargeable in ionic liquid electrolytes,however,the Al anode and battery case suffer from *** the other hand,Al is irreversible in aqueous electrolyte with severe hydrogen evolution ***,we demonstrate a water-in-salt aluminum ion electrolyte(WISE)based on Al and lithium salts to tackle the above *** the WISE system,water molecules can be confined within the Li^(+)solvation *** diminished Al^(3+)-H_(2)O interaction essentially eliminates the hydrolysis effect,effectively protecting Al anode from ***,long-term Al plating/stripping can be ***,two types of high-performance full batteries have been demonstrated using copper hexacyanoferrate(CuHCF,a Prussian Blue Analogues)and LiNi_(0.8)Co_(0.1)Mn_(0.1)O_(2)(NCM)as *** reversibility of Al anode laid the foundation for low cost rechargeable batteries suffering for large-scale energy *** context:Al batteries are expected to become a safe and sustainable alternative to lithium *** decades,chase for a feasible Al secondary battery has not been *** key challenge is to find suitable cathode and electrolyte materials,together with which Al anode battery can function ***,fatal drawbacks have impeded the practical application of Al metal batteries(AMBs),such as sustained corrosion of Al anode and battery case in ionic liquid electrolytes,irreversibility issues as well as severe hydrogen evolution reaction during cycling in aqueous ***,electrolyte and their electrochemical kinetics play a vital role in the performance and environmental operating limitations of high-energy Al metal *** this work,we demonstrate a nearly neutral Al ion water-in-salt electrolyte(WISE)to tackle the above chal

关键词： Water-in-salt electrolyte Rechargeable aluminum anode Solvation sheath Hybrid battery Abundance

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深部原位应力环境钻进过程中岩心饼化成因机制:数值模拟与室内试验

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Journal of Central South University 2023年第10期30卷 3303-3321页

作者：李飞高明忠叶思琪谢晶邓虎超杨本高刘军军杨尊东唐瑞烽 State Key Laboratory of Intelligent Construction and Healthy Operation and Maintenance of Deep Underground Engineering College of Water Resource and HydropowerSichuan UniversityChengdu 610065China Guangdong Provincial Key Laboratory of Deep Earth Sciences and Geothermal Energy Exploitation and Utilization Institute of Deep Earth Sciences and Green EnergyCollege of Civil and Transportation EngineeringCollege of Civil and Transportation EngineeringShenzhen UniversityShenzhen 518060China Power China Chengdu Engineering Corporation Limited Chengdu 611130China

深部岩体原位应力赋存状态一直是“黑箱”问题,基于岩心的应力测试技术已成为有效的解决手段之一。在深部原位应力环境钻进过程中时常出现岩心饼化现象,为了探索其在砂岩中的形成机制,利用PFC2D研究了不同原位应力条件下钻进过程中的裂... 详细信息

深部岩体原位应力赋存状态一直是“黑箱”问题,基于岩心的应力测试技术已成为有效的解决手段之一。在深部原位应力环境钻进过程中时常出现岩心饼化现象,为了探索其在砂岩中的形成机制,利用PFC2D研究了不同原位应力条件下钻进过程中的裂纹分布和能量演化,获得了易发生岩心饼化的特定原位应力条件。应用自主开发的测试系统验证了实验室环境内岩心饼化所需的应力条件,并分析了岩心破裂特征、断面形貌与原位应力之间的关系。结果表明,原位应力越高,在钻进过程中岩石产生的拉裂纹越多,尤其是在孔壁和岩心根部,而岩心处裂纹从外表面向内部发展。更高的原位应力水平同样会导致更强的能量转换,进而引发岩石破裂。岩心饼化的形成需满足特定的应力条件。当径向应力(σ_(r))为最大主应力且保持45 MPa恒定、轴向应力(σa)为25 MPa或30 MPa时,岩心根部均会发生饼化现象。随着σ_(r)和σa之间差值或钻进深度的增加,岩心厚度减小,导致断面更光滑、分形维数更小,从而使岩心饼化现象更加显著。该研究可为科学阐明深部原位应力条件下岩心饼化的形成机制提供必要的技术和数据支持。

关键词：深部岩体原位应力饼化形成机制裂纹分布能量演化宏观破裂特征断面形貌

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A novel vanadium complex VO(p-dmada)inhibits neuroinflammation induced by lipopolysaccharide

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Chinese Chemical Letters 2023年第10期34卷 209-214页

作者： Zhijun He Xiaoqian Li Huajie Zhang Xin Liu Shuangxue Han Anwar Abdurahman Liming Shen Xiubo Du Nan Li Xiaoda Yang Qiong Liu Shenzhen Key Laboratory of Marine Biotechnology and Ecology College of Life Sciences and OceanographyShenzhen UniversityShenzhen 518055China National R&D Center for Se-rich Agricultural Products Processing Hubei Engineering Research Center for Deep Processing of Green Se-rich Agricultural ProductsSchool of Modern Industry for Selenium Science and EngineeringWuhan Polytechnic UniversityWuhan 430023China Shenzhen Bay Laboratory Shenzhen 518055China State Key Laboratories of Natural and Biomimetic Drugs Department of Chemical BiologySchool of Pharmaceutical SciencesPeking University Health Science CenterBeijing 100191China Department of Pharmacy Shenzhen People’s Hospital(The Second Clinical Medical CollegeJinan UniversityThe First Affiliated HospitalSouthern University of Science and Technology)Shenzhen 518020China Shenzhen-Hong Kong Institute of Brain Science-Shenzhen Fundamental Research Institutions Shenzhen 518055China

Uncontrolled microglial activation is decisively involved in the neuroinflammatory pathogenesis of brain diseases. Consequently, suppression of microglial overactivation appears to be a strategy for the prevention of nerve injury. In this paper, a novel vanadium complex, vanadyl N-(p-N,Ndimethylaminophenylcarbamoylmethyl)iminodiacetate(VO(p-dmada)), was synthesized from vanadyl sulfate and N,N-dimethyl-p-phenylenediamine, which was structurally characterized by Fourier transform infrared spectrum and ESI-MS analysis. The effect of VO(p-dmada) on neuroinflammation was investigated by using the models of lipopolysaccharide(LPS)-induced BV2 microglial cells and BALB/c *** data demonstrated that VO(p-dmada) significantly suppressed microglial activation by downregulating inflammatory mediators and associated proteins, and inactivating nuclear factor-κ B(NF-κ B) signaling pathway. VO(p-dmada) also upregulated peroxisome proliferator activated receptor gamma(PPARγ) by reducing transglutaminase 2 and heat shock protein 60 expression. Co-treatment with PPARγ antagonist GW9662 significantly impeded the inhibitory effect of VO(p-dmada) on LPS-induced *** cumulative findings demonstrated that VO(p-dmada) is a potential new drug for the treatment of neuroinflammation-related neurodegenerative diseases.

关键词： Vanadium Vanadyl N-(p-N,Ndimethylaminophenylcarbamoylmethyl)iminodiacetate (VO(p-dmada)) Neuroinflammation Microglia Proteomics Peroxisome proliferator activated receptor gamma(PPARγ)

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Temperature Effects on the Mechanical Response and Failure Mechanism of Anisotropic Shale in Direct Shear

SSRN

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SSRN 2024年

作者： Zhou, Pengli Xie, Heping Wang, Jun Zou, Bingbing Hu, Jianjun Li, Cunbao State Key Laboratory of Intelligent Construction and Healthy Operation and Maintenance of Deep Underground Engineering Shenzhen University Shenzhen518060 China Guangdong Provincial Key Laboratory of Deep Earth Sciences and Geothermal Energy Exploitation and Utilization Institute of Deep Earth Sciences and Green Energy College of Civil and Transportation Engineering Shenzhen University Shenzhen518060 China Shenzhen Key Laboratory of Deep Engineering Sciences and Green Energy College of Civil and Transportation Engineering Shenzhen University Shenzhen518060 China Institute of New Energy and Low‐Carbon Technology United Kingdom

The stimulation of shale reservoirs often involves marked shear failure, which plays a pivotal role in creating fracture networks and enhancing permeability for increased production. This study presents, for the first time, direct shear experiments conducted on shales at four different temperatures and seven bedding angles. By employing acoustic emission (AE) and digital image correlation (DIC) techniques, the evolution of damage and the mechanism of crack propagation under anisotropic direct shear at varying temperatures is revealed. The results indicate that the shear displacement and strength of shale increase with the temperature under different bedding angles. In addition, shale exhibits distinct brittle failure characteristics under various conditions during direct shear tests. The anisotropic shear failure types of shale under the influence of temperature include central shearing fracture, central shearing with secondary fracture, and deflected slip along the bedding. Moreover, the temperature effect enhances shear-induced crack propagation along bedding planes. Shear failure in shale is observed to primarily occur during higher loading stages, coinciding with a large amount of AE signals. Finally, the introduction of the anisotropy index and temperature sensitivity coefficient further elucidates the interaction mechanism between the temperature effects and anisotropy. This study provides crucial theoretical and experimental evidence regarding shear failure behavior under shale reservoir stimulation. © 2024, The Authors. All rights reserved.

关键词： Image correlation

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Interface and energy band manipulation of Bi2O3-Bi2S3 electrode enabling advanced magnesium-ion storage

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Journal of Magnesium and Alloys 2024年第9期12卷 3543-3552页

作者： Qiang Tang Yingze Song Xuan Cao Cheng Yang Dong Wang Tingting Qin Wei Zhang State Key Laboratory of Environment-Friendly Energy Materials Tianfu Institute of Research and InnovationSchool of Materials Science and EngineeringSouthwest University of Science and TechnologyMianyangSichuan 621010PR China Institute of Materials Research Tsinghua Shenzhen International Graduate SchoolTsinghua UniversityShenzhen 518055China State Key Laboratory of Chem/Bio-Sensing and Chemometrics Advanced Catalytic Engineering Research Center of the Ministry of EducationCollege of Chemistry and Chemical EngineeringHunan UniversityChangshaHunan 410082PR China Chongqing Institute of Green and Intelligent Technology Chinese Academy of SciencesChongqing 400714PR China

Rechargeable magnesium-ion(Mg-ion)batteries have attracted wide attention for energy ***,magnesium anode is still limited by the irreversible Mg plating/stripping ***,a well-designed binary Bi_(2)O_(3)-Bi_(2)S_(3)(BO-BS)heterostructure is fulfilled by virtue of the cooperative interface and energy band engineering targeted fast Mg-ion *** built-in electronic field resulting from the asymmetrical electron distribution at the interface of electron-rich S center at Bi_(2)S_(3) side and electron-poor O center at Bi_(2)O_(3) side effectively accelerates the electrochemical reaction kinetics in the Mg-ion battery ***,the as-designed heterogenous interface also benefits to maintaining the electrode *** these advantages,the BO-BS electrode displays a remarkable capacity of 150.36 mAh g^(−1) at 0.67 A g^(-1) and a superior cycling *** investigation would offer novel insights into the rational design of functional heterogenous electrode materials targeted the fast reaction kinetics for energy storage systems.

关键词： Magnesium-ion battery Bi2O3-Bi2S3 heterostructure Interface and energy band engineering Electrochemical reaction kinetics Electrode integrity

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Noble and Non-Noble Metal Based Catalysts for Electrochemical Nitrate Reduction to Ammonia:Activity,Selectivity and Stability

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Electrochemical energy Reviews 2024年第1期7卷 1384-1422页

作者： Israr Masood ul Hasan Nengneng Xu Yuyu Liu Muhammad Zubair Nawaz Haitao Feng Jinli Qiao State Key Laboratory for Modification of Chemical Fibers and Polymer Materials College of Environmental Science and EngineeringDonghua UniversityShanghai 201620China Institute for Sustainable Energy College of SciencesShanghai UniversityShanghai 200444China Shanghai Institute of Pollution Control and Ecological Security Shanghai 200092China Laboratory of 2D Optoelectronics and Nanoelectronics(L2DON) Department of Materials Science and EngineeringSouthern University of Science TechnologyShenzhen 518055GuangdongChina Key Laboratory of Green and High-End Utilization of Salt Lake Resources Qinghai Institute of Salt LakesChinese Academy of SciencesXining 810008QinghaiChina

Excessive nitrate(NO_(3)^(-))contamination has emerged as a critical environmental issue owing to the widespread use of nitrogen-based fertilizers,fossil fuel combustion,and the discharge of industrial and domestic ***,electrochemical nitrate reduction(eNO_(3)R)to ammonia(NH3)has emerged as a promising alternative to the traditional Haber-Bosch ***,the industrial implementation ofeNO_(3)R is hindered by low catalytic activity,poor selectiv-ity,and limited stability owing to competing hydrogen evolution *** paper provides a comprehensive overview of recent advancements ineNO_(3)R,particularly evaluating the catalytic activity,selectivity,and stability of both noble and non-noble metal *** review elucidates innovative catalyst design strategies,state-of-the-art developments,and potential directions for future ***,the paper explores the fundamental mechanisms underlyingeNO_(3)R forNH_(3)production,including electrocatalyst development methodologies,electrolyte effects,in situ characterization techniques,theoretical modeling,and cell design ***,factors influencingNH_(3)selectivity and catalyst structural composition are thoroughly ***,this review provides comprehensive insights into optimizingeNO_(3)R processes for synthesizingNH_(3),which can promote further advancements in this field.

关键词： Nitrate reduction Electrocatalysis NH_(3)production Activity Selectivity Stability

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Fe-Ni-F electrocatalyst for enhancing reaction kinetics of water oxidation

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Chinese Journal of Structural Chemistry 2024年第2期43卷 60-65页

作者： Yi Zhang Biao Wang Chao Hu Muhammad Humayun Yaping Huang Yulin Cao Mosaad Negem Yigang Ding Chundong Wang School of Chemical Engineering and Pharmacy Key Laboratory of Green Chemical Process of Ministry of EducationKey Laboratory of Novel Reactor and Green Chemical Technology of Hubei ProvinceWuhan Institute of TechnologyWuhan430073PR China Energy Waterand Environment LabCollege of Humanities and SciencesPrince Sultan UniversityRiyadh11586Saudi Arabia School of Integrated Circuits Wuhan National Laboratory for OptoelectronicsHuazhong University of Science and TechnologyWuhan430074PR China Physics Laboratory Industrial Training CenterShenzhen Polytechnic UniversityShenzhen518055PR China Chemistry Department Faculty of ScienceFayoum UniversityFayoum63514Egypt

Highly active and low-cost oxygen evolution reaction(OER)catalytic electrodes are extremely essential for exploration of green hydrogen via water ***,an advanced Fe-Ni-F electrocatalyst is fabricated by a facile annealing strategy using ammonium fluoride,of which the structure feature is unveiled by XRD,FESEM,TEM,EDS,BET,and XPS *** as-prepared Fe-Ni-F addresses a low overpotential of 277 mV and a small Tafel slope of 49 mV dec^(-1)at a current density of 10 mA cm^(-2),significantly outperforming other control samples as well as the state-of-the-art RuO_(2).The advanced nature of our Fe-Ni-F catalyst could also be further evidenced from the robust stability in KOH alkaline solution,showing as 5.41%degradation after 24 h continuous *** analysis,it suggests that the decent catalytic activity should be attributed to the formed bimetallic(oxy)hydroxides because of the introduction of fluoride and the synergistic effect of iron and nickel towards oxygen *** work represents the potential of Fe-and/or Ni-based fluoride as efficient catalyst for low-energy consumption oxygen generation.

关键词： Fluoride Oxygen evolution reaction Fe-Ni-F Reaction kinetics

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