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Efficient and Stable Photoassisted Lithium‑Ion Battery Enabled by Photocathode with Synergistically Boosted Carriers Dynamics

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Nano-Micro Letters 2025年第3期17卷 440-454页

作者： Zelin Ma Shiyao Wang Zhuangzhuang Ma Juan Li Luomeng Zhao Zhihuan Li Shiyuan Wang Yazhou Shuang Jiulong Wang Fang Wang Weiwei Xia Jie Jian Yibo He Junjie Wang Pengfei Guo Hongqiang Wang State Key Laboratory of Solidification Processing Center for Nano Energy MaterialsSchool of Materials Science and EngineeringNorthwestern Polytechnical University and Shaanxi Joint Laboratory of Graphene(NPU)Xi’an 710072People’s Republic of China State Key Laboratory of Solidification Processing School of Materials Science and Engineering DepartmentNorthwestern Polytechnical UniversityXi’an 710072People’s Republic of China State Key Laboratory of Solidification Processing Center of Advanced Lubrication and Seal MaterialsSchool of Materials Science and EngineeringNorthwestern Polytechnical UniversityXi’an 710072People’s Republic of China Research and Development Institute of Northwestern Polytechnical University in Shenzhen Shenzhen 518063People’s Republic of China Key Laboratory of Applied Surface and Colloid Chemistry Shaanxi Key Laboratory for Advanced Energy DevicesShaanxi Engineering Lab for Advanced Energy TechnologySchool of Materials Science and EngineeringNational Ministry of EducationShaanxi Normal UniversityXi’an 710119People’s Republic of China

Efficient and stable photocathodes with versatility are of significance in photoassisted lithium-ion batteries(PLIBs),while there is always a request on fast carrier transport in electrochemical active *** work proposes a general approach of creating bulk heterojunction to boost the carrier mobility of photocathodes by simply laser assisted embedding of plasmonic *** employed in PLIBs,it was found effective for synchronously enhanced photocharge separation and transport in light charging ***,experimental photon spectroscopy,finite difference time domain method simulation and theoretical analyses demonstrate that the improved carrier dynamics are driven by the plasmonic-induced hot electron injection from metal to TiO_(2),as well as the enhanced conductivity in TiO2 matrix due to the formation of oxygen vacancies after Schottky *** from these merits,several benchmark values in performance of TiO2-based photocathode applied in PLIBs are set,including the capacity of 276 mAh g^(−1) at 0.2 A g^(−1) under illumination,photoconversion efficiency of 1.276%at 3 A g^(−1),less capacity and Columbic efficiency loss even through 200 *** results exemplify the potential of the bulk heterojunction strategy in developing highly efficient and stable photoassisted energy storage systems.

关键词： Photoassisted lithium-ion batteries Bulk heterojunction Carrier dynamics TiO2 nanofiber Plasmonic metal nanocrystals

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Building Li-S batteries with enhanced temperature adaptability via a redox-active COF-based barrier-trapping electrocatalyst

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Journal of Energy Chemistry 2025年第2期101卷 702-712,I0015页

作者： Jie Xu Acheng Zhu Zhangyu Zheng Yiming Qi Yuwen Cheng Yongjie Cao Bo Peng Lianbo Ma Yonggang Wang School of Materials Science and Engineering Key Laboratory of Efficient Conversion and Solid-state Storage of Hydrogen&Electricity of Anhui ProvinceKey Laboratory of Green Fabrication and Surface Technology of Advanced Metal Materials of Ministry of EducationAnhui University of TechnologyMa'anshan 243002AnhuiChina Department of Chemistry and Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials Institute of New EnergyiChEM(Collaborative Innovation Center of Chemistry for Energy Materials)Fudan UniversityShanghai 200433China

Covalent organic frameworks(COFs)are promising materials for mitigating polysulfide shuttling in lithium-sulfur(Li-S)batteries,but enhancing their ability to convert polysulfides across a wide temperature range remains a challenge,Herein,we introduce a redox-active COF(RaCOF)that functions as both a physical barrier and a kinetic enhancer to improve the temperature adaptability of Li-S batteries,The RaCOF constructed from redox-active anthraquinone units accelerates polysulfide conversion kinetics through reversible C=O/C-OLi transformations within a voltage range of 1,7 to 2.8 V(***^(+)/Li),optimizing sulfur redox reactions in ether-based *** conventional COFs,RaCOF provides bidentate trapping of polysulfides,increasing binding energy and facilitating more effective polysulfide ***-situ XRD and ToF-SIMS analyses confirm that RaCOF enhances polysulfide adsorption and promotes the transformation of lithium sulfide(Li_(2)S),leading to better sulfur cathode ***,RaCOF-modified Li-S batteries demonstrate low self-discharge(4.0%decay over a 7-day rest),excellent wide-temperature performance(stable from-10 to+60℃),and high-rate cycling stability(94%capacity retention over 500 cycles at 5.0 C).This work offers valuable insights for designing COF structures aimed at achieving temperature-adaptive performance in rechargeable batteries.

关键词： Lithium-sulfur batteries Redox-active property Covalentorganic framework Wide-temperature adaptability

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Catalytic Degradation of Tetracycline by Core–Shell CoMn@NC Nanoparticles Via Enhanced Peroxymonosulfate Activation 9th

Catalytic Degradation of Tetracycline by Core–Shell CoMn@NC...

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9th International Conference on Advances in Energy and Environment Research, ICAEER 2024

作者： Bao, Yuankang Xu, Xun Xie, Dongbai Weifang Key Lab of Advanced Light Materials Manufacturing and Forming Weifang University of Science and Technology Shouguang China Jiangxi Key Laboratory of Materials Surface Engineering Jiangxi Science and Technology Normal University Nanchang China

ISBN: (纸本)9783031845703

This study synthesized core–shell structured CoMn@nitrogen-doped carbon (CoMn@NC) magnetic nanoparticles by annealing CoMn Prussian blue analog (PBA) precursors. The catalytic performance of the catalyst in activating peroxymonosulfate (PMS) to degrade tetracycline hydrochloride (TC) was investigated. Characterization of the catalyst using X-ray diffraction, and scanning electron microscopy revealed the presence of amorphous carbon, CoO, Co, and amorphous manganese species, with CoMn bimetallic particles encapsulated in nitrogen-carbon core–shell structures. At 25 °C and an initial pH of 6.2, with the addition of 50 mg/L catalyst and 200 mg/L PMS, complete degradation of 20 mg/L TC was achieved within 20 min. © The Author(s), under exclusive license to Springer Nature Switzerland AG 2025.

关键词： Amorphous carbon

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Mathematical modeling of salicylate effects on high-purity Mg anode for aqueous primary Mg-Air batteries

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Journal of Magnesium and Alloys 2025年第4期13卷 1506-1522页

作者： Xu, Wen Wu, Yulong Snihirova, Darya Wang, Linqian Deng, Min Wang, Cheng Lamaka, Sviatlana V. Zheludkevich, Mikhail L. Höche, Daniel Institute of Surface Science Helmholtz-Zentrum Hereon Geesthacht21502 Germany School of Materials Science and Engineering Hebei University of Technology Tianjin 300000 China School of Materials Science and Engineering &Jiangsu Key Laboratory for Advanced Metallic Materials Southeast University Nanjing211189 China Institute for Materials Science Faculty of Engineering Kiel University Kiel24143 Germany

This study investigates the effectiveness of salicylate (SAL) as an electrolyte additive on the discharge behavior of high-purity (HP) Mg anode in an aqueous half-cell system, using an integrated approach of mathematical modeling and experimental analysis. A finite element-based model is developed to elucidate the key mechanisms by which SAL influences the voltage profile and pH. Systematic electrochemical measurements, especially intermittent discharge tests combined with electrochemical impedance spectroscopy (EIS), demonstrate that SAL can enhance initial voltage stability of HP Mg anode. Moreover, the model incorporates the SAL-Mg complexation factor to describe the role of SAL in modifying the deposit film on HP Mg surface. The agreement between model predictions and experimental observations suggests that SAL facilitates the formation of compact Mg(OH)2 deposits and sustains a favorable pH environment within the half-cell compartment. This integrated approach provides new insights into understanding and optimizing additive effects for Mg-air batteries. © 2025

关键词： Anode materials

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Research on in situ generation mechanism and tribological properties of superhard high entropy ceramic coatings by high speed laser cladding

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Ceramics International 2025年

作者： Liu, Jin Shao, Qizhe Cui, Xiufang Jin, Guo Wen, Xin Shi, Taoyi Tian, Haoliang Institute of Surface/Interface Science and Technology Key Laboratory of Superlight Material and Surface Technology of Ministry of Education College of Materials Science and Chemical Engineering Harbin Engineering University Harbin150001 China Aviation Key Laboratory of Science and Technology on Advanced Corrosion and Protection for Aviation Materials AECC Beijing Institute of Aeronautical Materials Beijing100095 China

The superhard high entropy ceramics coating was prepared in situ on surface of titanium alloys by high speed laser cladding with ZrB2, TiB2, NbB2, MoB2, and TaB2 as the original powder. The composition and generation mechanism of phases of coating were analyzed. The results showed that two phases were generated in situ during high speed laser cladding. On the one hand, the in situ reaction between melted ceramic powder and Ti element generated a high entropy monoboride ceramic (Zr, Ti, Nb, Mo, Ta)B with CrB-like structure. On the other hand, the substitution reaction between melted ceramic powders generated high entropy diborides (Zr, Ti, Nb, Mo, Ta)B2 with hexagonal structure. The coating exhibited high hardness (1931.4 HV0.5) and excellent tribological properties. The abrasive and adhesive wear phenomena of the coating are significantly reduced compared to the substrate, and the wear rate of the coating is less than 1/5 of that of the *** is attributed to dense microstructure and significant lattice distortion effect of the high entropy material. © 2025 Elsevier Ltd and Techna Group S.r.l.

关键词： Titanium alloys

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Effect of Morphology Structures on Hydrogen Evolution Reaction and Oxygen Evolution Reaction Performances of Mo_(2)CO_(2)MXene

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Chinese Journal of Chemical Physics 2025年第2期38卷 199-211,I0040页

作者： Mengyue Li Yuwen Cheng Cuiping Shao Yongtao Li School of Materials Science and Engineering Anhui University of TechnologyMaanshan 243002China Key Laboratory of Green Fabrication and Surface Technology of Advanced Metal Materials Ministry of EducationAnhui University of TechnologyMaanshan 243002China

Currently,single atom(SA),quantum dots(QDs)and heterogeneous interfaces have been extensively em-ployed for the design of nov-el catalysts for overall water ***,there are still few literatures about the hydrogen(HER)and oxygen(OER)evolution perfor-mances for three different morphologies of the same metal loaded on MXenes ***,the HER and OER per-formances of Mo_(2)CO_(2)modified by transition metals(TM,TM=Fe,Co,and Ni)with differ-ent SA loading(STM/Mo_(2)CO_(2)),QDs(QTM/Mo_(2)CO_(2))and heterogeneous interface(ITM/Mo_(2)CO_(2)),and TM loading and N3(TMN_(3)/Mo_(2)CO_(2))or N4 doping co-modification(TMN4/Mo_(2)CO_(2))are investigated by density functional theory(DFT)*** re-sults show that the HER and OER performances of STM/Mo_(2)CO_(2)are better than those of ITM/Mo_(2)CO_(2)and QTM/Mo_(2)CO_(2).Especially,SNi/Mo_(2)CO_(2)exhibits the best HER and OER properties among the studied structures,with the correspondingΔGH*andηOER of−0.04 eV and 0.53 V,*** is noteworthy that theΔGH*absolute value,ηOER,work function(Φ)and TM valence charges are significantly correlated,whereΔGH*absolute value,ηOER,andΦall present an increase trend following the order of STM/Mo_(2)CO_(2),ITM/Mo_(2)CO_(2),and QTM/Mo_(2)CO_(2),whereas TM valence charges exhibit a decrease trend with the above ***,integral crystal orbital Hamilton population(ICOHP)results indicate that the more negative the ICOHP,the stronger bonding strength between TM and H atoms,and the better the corresponding HER performance in STM/Mo_(2)CO_(2).Campared with SNi/Mo_(2)CO_(2),Ni loading and N3 doping co-modification Mo_(2)CO_(2)(NiN_(3)/Mo_(2)CO_(2))shows better HER(ΔGH*=−0.01 eV)and OER catalytic activities(ηOER=0.36 V).Molecular dynamics simula-tions results indicate that most of the modified systems are stable at reaction *** summary,NiN_(3)/Mo_(2)CO_(2)can be used as an efficient electrocatalyst for overall water splitting.

关键词： Single-atom catalysts Quantum dot Heterogeneous interface Density function-al theory Mo_(2)CO_(2)MXene

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Fatigue Life Extension of Laser Shock Peened 7050 Aluminum Alloy Manufactured Fillet Structures

Fatigue Life Extension of Laser Shock Peened 7050 Aluminum A...

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9th International Conference on surface engineering, ICSE 2024

作者： Shuai, Shixiang Jiang, Angran Che, Zhigang Lei, Fan Sun, Rujian Co. Ltd. Chengdu610091 China Aviation Key Laboratory of Science and Technology on Advanced Surface Engineering AVIC Manufacturing Technology Institute Beijing100024 China

Laser shock peening (LSP) represents an advanced manufacturing method for surface strain strengthening and anti-fatigue production. In this study, laser shock peening (LSP) was employed to treat fillet structures made from 7050 aluminium alloy. Residual stress distribution and high cycle fatigue performance were investigated by numerical simulation and experiment, respectively. Further, fatigue life extension was verified with mathematical statistics methods. Results show that by utilizing the following LSP parameters: pulse energy of 25 J, spot size of Φ4.5 mm, overlapping rate of 50%, and peening twice, the average compressive residual stress on the fillet structure surface reached 218.3 MPa, the maximum residual stress in the depth direction located at a depth of 0.9 mm, and the thickness of residual stress affecting layer was 1.6 mm. Besides, the high cycle fatigue life significantly improved after LSP. The mean high-cycle fatigue life of the LSP-treated side was 160,626 cycles, in comparison to 58,606 cycles for the BM side. Furthermore, the t-test method of paired comparative experiments demonstrated that the high-cycle fatigue life of the LSP-treated side was 2.18 to 3.36 times higher than that of the BM side at the 95% confidence level. © 2025 Institute of Physics Publishing. All rights reserved.

关键词： Aluminum alloys

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Angle-resolved magneto-chiral anisotropy in a non-centrosymmetric atomic layer superlattice

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science Bulletin 2025年第9期70卷 1406-1409页

作者： Cheng, Long Bao, Mingrui Zhang, Xue Zhang, Jingxian Yang, Qun Li, Qiang Cao, Hui Qiu, Dawei Li, Hui Cheng, Guanglei Zhou, Hua Zuo, Jian-Min Zhou, Xiaodong Shen, Jian Zhu, Zhifeng Wang, Wenbo Zhai, Xiaofang School of Physical Science and Technology ShanghaiTech University Shanghai201210 China CAS Key Laboratory of Microscale Magnetic Resonance and School of Physical Sciences University of Science and Technology of China Hefei230026 China School of Information Science and Technology ShanghaiTech University Shanghai201210 China State Key Laboratory of Surface Physics and Institute for Nanoelectronic Devices and Quantum Computing Fudan University Shanghai200433 China X-ray Science Division Advanced Photon Source Argonne National Laboratory LemontIL60439 United States Institutes of Physical Science and Information Technology Anhui University Hefei230601 China Department of Materials Science and Engineering and Materials Research Laboratory University of Illinois Urbana–Champaign UrbanaIL61801 United States ShanghaiTech Laboratory for Topological Physics ShanghaiTech University Shanghai201210 China

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Synergistic effects of precursor reduction and ion migration blocking result in highly sensitive MAPbI₃ X-ray detectors with a low detection limit

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Journal of Materials Chemistry C 2025年第10期13卷 5317-5325页

作者： Jiang, Long Xue, Chengzhi Cheng, Jiatian Li, Nan Fan, Xinyu Yang, Yuanbo Li, Tiantian Li, Liwei Liu, Yucheng Feng, Jiangshan Liu, Shengzhong Yang, Zhou State Key Laboratory of Oil and Gas Equipment CNPC Tubular Goods Research Institute Shaanxi Xi’an 710077 China Key Laboratory of Applied Surface and Colloid Chemistry Ministry of Education Shaanxi Key Laboratory for Advanced Energy Devices Shaanxi Engineering Lab for Advanced Energy Technology School of Materials Science and Engineering Shaanxi Normal University Xi'an 710119 China Dalian Institute of Chemical Physics Chinese Academy of Sciences University of Chinese Academy of Sciences Dalian 116023 China Dalian National Laboratory for Clean Energy iChEM Dalian Institute of Chemical Physics Chinese Academy of Sciences Dalian 116023 China

Lead halide perovskites have emerged as promising materials for sensitive, low-dose-rate X-ray imaging. However, the dark current drift caused by ion migration poses challenges to their long-term operational stability and performance. To address this issue, we explored the synergistic effects of precursor reduction and ion migration blocking. Reducing the precursor solution decreases the defect density, enhancing the carrier lifetime and mobility-lifetime product, thus boosting X-ray sensitivity. However, this approach alone does not effectively suppress dark current drift. By incorporating an ion migration blocker, the optimized device exhibits a significantly reduced dark current drift of 3.62 × 10⁻⁴ nA cm⁻¹ s⁻¹ V⁻¹, an improved X-ray sensitivity of 1.22 × 10⁵ μC Gy_air⁻¹ cm⁻² and a low detection limit of 3.93 nGy_air s⁻¹ under a 40 kV X-ray source and 12.66 V mm⁻¹ electrical field, positioning it among the best of polycrystalline perovskite X-ray detectors. Additionally, it can capture a clear X-ray image of a metal key at an X-ray dose of 2.85 μGy_air s⁻¹, highlighting its potential for low-dose X-ray imaging applications. © 2025 The Royal Society of Chemistry.

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Effect of Oblique Laser Shock Peening on Fretting Fatigue of FGH95 Powder Superalloy 6

Effect of Oblique Laser Shock Peening on Fretting Fatigue of...

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2024 6th International Conference on advanced Materials and Ecological Environment, AMEE 2024

作者： Qu, Xiangming Wang, Wenjun Zhao, Yanyun Cao, Jun Zhu, Haiyan Guo, Xiaojun Wang, Xu Zhang, Yongkang College of Mechanical Engineering Hunan Institute of Science and Technology Yueyang Hunan China Guangdong Provincial Key Laboratory of Advanced Manufacturing Technology of Marine Energy Equipment Guangdong University of Technology Guangdong Guangzhou China Foshan Yuantian Mattress Machinery Co. Ltd Guangdong Foshan China AECC Hunan Aviation Powerplant Research Institute Hunan Zhuzhou China

Due to the high-frequency vibration contact of blade tenon, the contact surface of the mortise surface of the turbine disk is prone to fretting wear and fatigue fracture. The effects of shock times of Oblique Laser Shock Peening (LSP) and temperature on the fretting fatigue properties were studied. The fretting fatigue life of Oblique LSP treated samples at room temperature could be increased by 103.0%;At high temperatures, the fretting fatigue life could be increased by 68.5%. Through the analysis of fracture morphology, the fracture developing zone of fretting fatigue and tensile fatigue samples were compared. It is revealed that the wear in the transverse contact pads would promote the initiation of fatigue cracks;Due to the compressive force of the transverse contact pads, the degree of plastic deformation of the fretting specimens would increase, the quasi-cleavage facets appeared, and the tear ridge characteristics were obvious. The results of this paper provide a reference for the Oblique LSP of the FGH95 powder superalloy turbine disk and other aero-engine parts. © Published under licence by IOP Publishing Ltd.

关键词： Fracture

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