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In-situ self-templated preparation of porous core-shell Fe_(1-x)S@N,S co-doped carbon architecture for highly efficient oxygen reduction reaction

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Journal of Energy Chemistry 2021年第3期30卷 310-317页

作者： Zhi Li Wei Wang Minjie Zhou Binhong He Wenqing Ren Liang Chen Wenyuan Xu Zhaohui Hou Yangyang Chen Key Laboratory of Hunan Province for Advanced Carbon-based Functional Materials School of Chemistry and Chemical EngineeringHunan Institute of Science and TechnologyYueyang 414006HunanChina School of Materials Science and Engineering Georgia Institute of TechnologyAtlanta 30332GAUnited States

Transition metal compound(TMC)/carbon hybrids,as prospering electrocatalyst,have attracted great attention in the field of oxygen reduction reaction(ORR).Their morphology,structure and composition often play a crucial role in determining the ORR *** this work,we for the first time report the successful fabrication of porous core-shell Fe_(1-x)S@N,S co-doped carbon(Fe_(1-x)S@NSC-t,t represents etching time)by a novel in-situ self-template induced strategy using Fe3O4 nanospheres and pyrrole as sacrificial *** post-polymerization of pyrrole can be accomplished by the Fe^(3+)released through the etching of Fe_(3)O_(4) by HCl ***,the etching time has a significant effect on the morphology,structure,composition a nd ORR performance of Fe_(1-x)S@*** on the cha racterizations,we find Fe_(1-x)S@NSC-24 can realize effective and balanced combination of Fe_(1-x)S and NSC,possessing porous core-shell architecture,optimized structure defect,specific surface area and doped heteroatoms configurations(especially for pyridinic N,graphitic N and Fe-N structure).These features thus lead to outstanding catalytic activity and cycling stability towards *** work provides a good guidance on the design of TMC/carbon-based electrodes with unique stable morphology and optimized structure and composition.

关键词： In-situ self-template Induced polymerization Porous core-shell Fe_(1-x)S@NSC Oxygen reduction reaction

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Stress compensation based on interfacial nanostructures for stable perovskite solar cells

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Interdisciplinary Materials 2023年第2期2卷 348-359页

作者： Cheng Zhu Xi Wang Hangxuan Li Chenyue Wang Ziyan Gao Pengxiang Zhang Xiuxiu Niu Nengxu Li Zipeng Xu Zhenhuang Su Yihua Chen Huachao Zai Haipeng Xie Yizhou Zhao Ning Yang Guilin Liu Xueyun Wang Huanping Zhou Jiawang Hong Xingyu Gao Yang Bai Qi Chen Beijing Key Laboratory of Construction Tailorable Advanced Functional Materials and Green Applications MIIT Key Laboratory for Lowdimensional Quantum Structure and DevicesExperimental Center of Advanced MaterialsSchool of Materials Science and EngineeringBeijing Institute of TechnologyBeijingChina School of Aerospace Engineering Beijing Institute of TechnologyBeijingChina Department of Materials Science and Engineering College of EngineeringPeking UniversityBeijingChina Shanghai Synchrotron Radiation Facility Shanghai Institute of Applied Physics Chinese Academy of SciencesShanghaiChina Hunan Key Laboratory for Super-microstructure and Ultrafast Process School of Physics and ElectronicsCentral South UniversityChangshaChina School of Science Jiangnan University WuxiWuxiJiangsuChina

The long-term stability issue of halide perovskite solar cells hinders their *** residual stress-strain affects device stability,which is derived from the mismatched thermophysical and mechanical properties between adjacent *** this work,we introduced the Rb_(2)CO_(3)layer at the interface of SnO_(2)/perovskite with the hierarchy morphology of snowflake-like microislands and dendritic *** a suitable thermal expansion coefficient,the Rb_(2)CO_(3)layer benefits the interfacial stress relaxation and results in a compressive stress-strain in the perovskite ***,reduced nonradiative recombination losses and optimized band alignment were *** enhancement of open-circuit voltage from 1.087 to 1.153 V in the resultant device was witnessed,which led to power conversion efficiency(PCE)of 22.7%(active area of 0.08313 cm^(2))and 20.6%(1 cm2).Moreover,these devices retained 95%of its initial PCE under the maximum power point tracking(MPPT)after 2700 *** suggests inorganic materials with high thermal expansion coefficients and specific nanostructures are promising candidates to optimize interfacial mechanics,which improves the operational stability of perovskite cells.

关键词： interfacial nanostructures long-term stability perovskite solar cells strain engineering thermal expansion coefficient

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Porous N-doped Ni@SiO_(2)/graphene network: Three-dimensional hierarchical architecture for strong and broad electromagnetic wave absorption

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Journal of Materials science & technology 2022年第11期106卷 108-117页

作者： Rui Guo Qi Zheng Lianjun Wang Yuchi Fan Wan Jiang State Key Laboratory for Modification of Chemical Fibers and Polymer Materials College of Materials Science and EngineeringDonghua UniversityShanghai 201620China Institute of Functional Materials Donghua UniversityShanghai 201620China Engineering Research Center of Advanced Glasses Manufacturing Technology Ministry of EducationDonghua UniversityShanghai 201620China

Electromagnetic wave absorber is critical for reducing increasingly serious electromagnetic wave pollu-tion,however,the development of lightweight and broadband microwave absorbers remains a pressing *** report here the rational design and synthesis of N-doped Ni@SiO_(2)/graphene composite con-structed from 3D interconnected porous graphene network and Ni@SiO_(2) core-shell architecture,which fulfills lightweight and broadband requirements while exhibiting highly efficient electromagnetic wave *** porous graphene network,functioning both as lightweight support and dielectric medi-ator,was synthesized via NaCl template-assisted high-temperature calcination *** uniformly attached with core-shell Ni@SiO_(2) on the surface,the resulting abundant heterogeneous interfaces con-structed by graphene-Ni and Ni-SiO_(2) strongly reinforce polarization *** presence of low dielectric SiO_(2) allows facile tuning of the complex permittivity of ternary composite by adjusting coating thick-ness to balance the attenuation ability and impedance ***,further N-doping of graphene assists in the optimization of dielectric loss *** account of the advantages arising from the porous hierarchical architecture,multiple absorption centers and diverse interfaces,the lightweight com-posite exhibits an ultra-strong reflection loss(RL)value of-71.13 dB at 13.76 GHz with a thickness of 2.46 mm and broad effective absorption bandwidth of 7.04 GHz at a low filler content of 15 wt.%.More importantly,the effective absorption range covers 13.28 GHz(4.72-18 GHz)with the optimized thickness of 1.6-5 mm,representing 83%of the whole range of *** results demonstrate that the novel 3D porous N-doped Ni@SiO_(2)/graphene network with hierarchical architecture is a promising candidate for high-performance electromagnetic wave absorption.

关键词： 3D porous graphene network Ni@SiO_(2)core-shell structure N-doped graphene Hierarchical architecture Electromagnetic wave absorption

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Recent advances in the electrocatalytic oxidative upgrading of lignocellulosic biomass

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ChemPhysMater 2024年第2期3卷 157-186页

作者： Yufeng Qi Hairui Guo Junting Li Li Ma Yang Xu Huiling Liu Cheng Wanga Zhicheng Zhang Institute for New Energy Materials and Low-Carbon Technologies School of Materials Science and EngineeringTianjin Key Laboratory of Advanced Functional Porous MaterialsTianjinUniversityof TechnologyTianjin 300384China Key Laboratory of Organic Integrated Circuit Minitry of Education&Tianjin Key Laboratoryof Molecular Optoelectronic Sciencespartment of ChemistrySchool of ScienceTianjin UniversityTianjin 300072China Collaborative Innovation Center of Chemical Science and Engineering(Tianjin) Tianjin 300072China

Lignocellulosic biomass is a critical renewable carbon resource,but most of its utilization is inefficient,and elec-trocatalytic oxidation is a promising method of upgrading lignocellulose into value-added fuels and chemicals under mild operating ***,efforts to enable conversion with a high efficiency and low energy con-sumption have been reported,but understanding the reaction mechanisms and realizing scaled-up applications of the electrooxidation of lignocellulosic biomass are still in their early stages.A timely overview of recently reported general reaction mechanisms,particularly the strategies developed for use in improving the reaction efficiencies,is necessary to inspire research regarding the highly efficient utilization of ***,we summa-rize the strategies developed to improve electrocatalytic performance in oxidative lignocellulose *** organized summary includes strategies ranging from designing efficient electrocatalysts and adding functional co-catalysts or electrolytes to employing advanced electrolyzers.A comprehensive overview of representative examples should provide universal principles to yield insight into the reaction processes and guide the design of efficient electrocatalytic ***,the challenges and opportunities in developing the electrocatalytic oxidative upgrading of lignocellulosic biomass in the near future are proposed.

关键词： Biomass conversion Lignocellulose Electrocatalysis Oxidative upgrading Electrocatalyst

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Ionic liquid/poly(ionic liquid)-based electrolytes for lithium batteries

Industrial Chemistry & Materials

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Industrial Chemistry & Materials 2023年第1期1卷 39-59页

作者： Xinyu Ma Jiangtao Yu Yin Hu John Texter Feng Yan Jiangsu Engineering Laboratory of Novel Functional Polymeric Materials Jiangsu Key Laboratory of Advanced Negative Carbon Technologies College of ChemistrySuzhou Key Laboratory of Soft Material and New EnergyCollege of ChemistryChemical Engineering and Materials ScienceSoochow UniversitySuzhou 215123China. Polymer and Coating Technology Coating Research InstituteSchool of EngineeringCollege of Engineering and TechnologyEastern Michigan UniversityYpsilantiMI 48197USA.

The growing demand for portable electronic devices,electric vehicles,and large-scale advanced energy storage has aroused increasing interest in the development of high energy density lithium *** electrolyte is an important component of lithium batteries and is an essential part of performance and safety *** available electrolytes mainly consist of lithium salts and organic carbonate solvents that are prone to decomposition due to their narrow electrochemical windows and tend to react with lithium metal anodes forming an unstable solid electrode/electrolyte interface(SEI).In particular,the flammability of organic solvents raises concerns about battery *** liquid/poly(ionic liquid)(IL/PIL)-based electrolytes enable batteries with good safety,high energy/power density and long-term sta*** review focuses on the applications of IL/PIL-based liquid,quasi-solid,and solid electrolytes and electrolyte additives in lithium *** perspectives and challenges of IL/PIL electrolytes in the field of lithium batteries are also proposed.

关键词： Ionic liquid Poly(ionic liquid) Lithium battery Solid electrolyte Quasi-solid electrolyte Additive

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Progress of advanced Cathode Materials of Rechargeable Aluminum-Ion Batteries

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Energy Material Advances 2024年第1期5卷 405-431页

作者： Dongwei Ma Jiahui Li He Li Du Yuan Zhuoyu Ji Maykel Manawan Carlos Ponce de León Albarran Chuan Wu Jia Hong Pan State Key Laboratory of Featured Metal Materials and Life-Cycle Safety for Composite Structures School of ResourcesEnvironment and MaterialsGuangxi UniversityNanning 530004GuangxiPR China College of Environmental Science and Engineering North China Electric Power UniversityBeijing 102206PR China College of Materials Science and Engineering Changsha University of Science and TechnologyChangsha 410004HunanPR China Research Center for Advanced Material National Research and Innovation Agency(BRIN)South Tangerang15314BantenIndonesia Faculty of Defense Science and Technology Republic of Indonesia Defense UniversityBogor 16810Indonesia Department of Mechanical Engineering Faculty of Engineering and Physical SciencesUniversity of SouthamptonHighfieldSouthampton SO171BJUK Beijing Key Laboratory of Environmental Science and Engineering School of Materials Science&EngineeringBeijing Institute of TechnologyBeijing 100081PR China Yangtze Delta Region Academy of Beijing Institute of Technolog Jiaxing 314019PR China

Given the increasing attention to the safety issues of lithium-ion batteries(LIBs)and the continuous rise in the price of lithium and its compounds,it is urgent to explore innovative electrochemical energy device alternatives to *** efforts have been devoted to developing rechargeable aluminum-ion batteries(AIBs),owing to their low cost and high energy density derived from the 3-electron redox ***,the dendrite-free plating behavior with room-temperature ionic liquid electrolytes endows AIBs with great safety expectations.A marked hurdle persists in the quest for appropriate cathode materials that can effectively accommodate aluminum ion species in *** review aims to deliver an integrated overview of the state-of-the-art cathode materials for nonaqueous and aqueous AIBs,with a special emphasis on their underlying electrochemical interaction with *** strategies adopted to improve the specific capacity and cyclic performances of AIBs are ***,future perspectives of AIBs are discussed.

关键词： rechargeable aluminum ion batteries ionic liquid electrolytes cathode materials specific capacity electrochemical interaction cyclic performance room temperature ionic liquid electrolytes

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Synthesis and Reaction Mechanism of High Injected Electron Concentration and Low Work Function [Ca24al28o64]4+:(4e-) by Sol-Gel Method Combined with Spark Plasma Sintering

SSRN

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SSRN 2024年

作者： Wang, Shouyong Han, Shangru Zhang, Xin Liu, Nan Luo, Zhuang Rong, Qinglin Yan, Long Lu, Qingmei School of Materials Science and Engineering Beijing University of Technology Key Laboratory of Advanced Functional Materials Ministry of Education Beijing100124 China

The high injected electron concentration and low work function C12A7:e- was successfully prepared by the sol-gel method combined with spark plasma sintering(SPS) using calcium nitrate, aluminum nitrate, citric acid, and ethylene glycol as raw materials. By analyzing the morphology of carbon and its role in the reactive synthesis, we reveal the reaction synthesis mechanism of C12A7:e- under the SPS. The analysis shows that C12A7:e- started to be generated at 800 °C. During the SPS reaction sintering process, carbon atoms from citric acid and ethylene glycol were excited by a pulsed current at high temperature, forming the carbon ions C22- and C (gas). Both act as reducing agents and react with the free oxygen ions O2- in the C12A7 cage cavity to form gaseous CO or CO2, enabling electrons to be injected into the cage cavity, thus generating C12A7:e-. Meanwhile, the graphene oxide (GO) formed on the surface of C12A7: e- grain is produced by the precursor of sol-gel synthesis in the high temperature oxidation environment, which will be conducive to improving the stability of C12A7: e- in air and high temperature oxidation resistance. © 2024, The Authors. All rights reserved.

关键词： Graphene

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Single-atom Fe Embedded Co_(3)S_(4) for Efficient Electrocatalytic Oxygen Evolution Reaction

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Chemical Research in Chinese Universities 2022年第5期38卷 1282-1286页

作者： QI Yuxue LI Tingting HU Yajie XIANG Jiahong SHAO Wenqian CHEN Wenhua MU Xueqin LIU Suli CHEN Changyun YU Min MU Shichun Key Laboratory of Advanced Functional Materials of Nanjing Nanjing Xiaozhuang UniversityNanjing 211171P.R.China Co-Innovation Center of Efficient Processing and Utilization of Forest Resources College of Materials Science and EngineeringNanjing Forestry UniversityNanjing 210037P.R.China State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070P.R.China

Constructing atomically dispersed active sites with densely exposed and dispersed double metal-Sx catalytic sites for favorable OER catalytic activity remains rare and ***,we design and construct a Fe_(1)S_(x)@Co_(3)S_(4) electrocatalyst with Fe single atoms epitaxially confined in Co_(3)S_(4) nanosheets for catalyzing the sluggish alkaline oxygen evolution reaction(OER).Consequently,in ultralow concentration alkaline solutions(0.1 mol/L KOH),such a catalyst is highly active and robust for OER with low overpotentials of 300 and 333 mV at current densities of 10 and 30 mA/cm^(2),respectively,accompanying long-term stability without significant degradation even for 350 *** addition,Fe_(1)S_(x)@Co_(3)S_(4) shows a turnover frequency(TOF)value of 0.18 s−1,nearly three times that of Co_(3)S_(4)(0.07 s−1),suggesting the higher atomic utilization of Fe single atoms.Mössbauer and in-situ Raman spectra confirm that the OER activity of Fe_(1)S_(x)@Co_(3)S_(4) origins from a thin catalytic layer of Co(Fe)OOH that interacts with trace-level Fe species in the electrolyte,creating dynamically stable active *** with experimental characterizations,it suggests that the most active S-coordinated dual-metal site configurations are 2S-bridged(Fe-Co)S4,in which Co-S and Fe-S moieties are shared with two S atoms,which can strongly regulate the adsorption energy of reaction intermediates,accelerating the OER reaction kinetics.

关键词： Electrocatalyst Dual-metal site S coordination Fe single atom Oxygen evolution reaction

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Synthesis and Reaction Mechanism of High Injected Electron Concentration and Low Work Function [Ca24al28o64]4+:(4e-) by Sol-Gel Method Combined with Spark Plasma Sintering

SSRN

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SSRN 2024年

关键词： Graphene

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An investigation on catalytic performance and reaction mechanisms of Fe/OMS-2 for the oxidation of carbon monoxide, ethyl acetate, and toluene

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Journal of Environmental sciences 2022年第2期34卷 258-268页

作者： Ning Dong Mengyue Chen Qing Ye Dan Zhang Hongxing Dai Key Laboratory of Beijing on Regional Air Pollution Control Department of Environmental ScienceSchool of Environmental and Chemical EngineeringFaculty of Environment and LifeBeijing University of TechnologyBeijing 100124China Beijing Key Laboratory for Green Catalysis and Separation Key Laboratory of Beijing on Regional Air Pollution ControlKey Laboratory of Advanced Functional MaterialsEducation Ministry of Chinaand Laboratory of Catalysis Chemistry and NanoscienceDepartment of Environmental Chemical EngineeringSchool of Environmental and Chemical EngineeringFaculty of Environment and LifeBeijing University of TechnologyBeijing 100124China

The octahedral molecular sieve(OMS-2)-supported Fe( xFe/OMS-2: x = 1, 3, 5, and 10) catalysts were prepared using the pre-incorporation method. Physicochemical properties of the as-synthesized materials were characterized by means of various techniques, and their catalytic activities for CO, ethyl acetate, and toluene oxidation were evaluated. Among all of the samples, performed the best, with the reaction temperature required to achieve 90% conversion( T 90%) being 160 ℃ for CO oxidation, 210 ℃ for ethyl acetate oxidation, and 285 ℃ for toluene oxidation. Such a good catalytic performance of 5Fe/OMS-2 was associated with its high(Mn^(3+) + Mn^(2+)) content and adsorbed oxygen species concentration, and good lowtemperature reducibility and lattice oxygen mobility as well as strong interaction between Fe and OMS-2. In addition, catalytic mechanisms of the oxidation of three pollutants over the 5Fe/OMS-2 catalyst were also studied. It was found that CO, ethyl acetate or toluene was first adsorbed, then the related intermediates were formed, and finally the formed intermediates were completely converted into CO_(2) and H_(2)O.

关键词： Cryptomelane-type OMS-2 Supported iron catalyst CO oxidation Volatile organic compound oxidation Toluene oxidation

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