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Emerging rechargeable aqueous aluminum ion battery:Status,challenges,and outlooks

Nano Materials Science 2020年第3期2卷 248-263页

作者： Du Yuan Jin Zhao William Manalastas Jr Sonal Kumar Madhavi Srinivasan Energy Research Institute Nanyang Technological University637553Singapore School of Materials Science and Engineering Nanyang Technological University639798Singapore

aluminum ion battery(AIB)technology is an exciting alternative for post-lithium energy *** based on ionic liquids have enabled advances in both cathode material development and fundamental understanding on ***,unlocking chemistry in rechargeable aqueous aluminum ion battery(AAIB)provides impressive prospects in terms of kinetics,cost,safety considerations,and ease of *** review the progress on AAIB,we discuss the critical issues on aluminum electrochemistry in aqueous system,cathode material design to overcome the drawbacks by multivalent aluminum ions,and challenges on electrolyte design,aluminum stripping/plating,solid-electrolyte interface(SEI)formation,and design of cathode *** review aims to stimulate exploration of high-performance AAIB and rationalize feasibility grounded on underlying reaction mechanisms.

关键词： aluminum ion battery Aqueous aluminum ion battery Rechargeable Al stripping/plating SEI

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Operando surface science methodology reveals surface effect in charge storage electrodes

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National Science Review 2021年第3期8卷 70-77页

作者： Chao Wang Yanxiao Ning Haibo Huang Shiwen Li Chuanhai Xiao Qi Chen Li Peng Shuainan Guo Yifan Li Conghui Liu Zhong-Shuai Wu Xianfeng Li Liwei Chen Chao Gao Chuan Wu Qiang Fu State Key Laboratory of Catalysis iChEMDalian Institute of Chemical PhysicsChinese Academy of Sciences University of Chinese Academy of Sciences Dalian National Laboratory for Clean Energy Dalian Institute of Chemical Physics Chinese Academy of Sciences Suzhou Institute of Nano-Tech and Nano-Bionics Chinese Academy of Sciences MOE Key Laboratory of Macromolecular Synthesis and Functionalization Department of Polymer Science and Engineering Zhejiang University Beijing Key Laboratory of Environmental Science and Engineering School of Materials Science &Engineering Beijing Institute of Technology

Surface and interface play critical roles in energy storage devices,calling for operando characterization techniques to probe the electrified surfaces/*** this work,surface science methodology,including electron spectroscopy and scanning probe microscopy,has been successfully applied to visualize electrochemical processes at operating electrode surfaces in an Al/graphite model *** of anions together with cations is directly observed in the surface region of a graphite electrode with tens of nanometers thickness,the concentration of which is one order higher than that in *** intercalation pseudocapacitance mechanism and a double specific capacity in the electrode surface region are expected based on the super-dense intercalants and anion/cation co-intercalation,which are in sharp contrast to the battery-like mechanism in the electrode *** distinct electrochemical mechanism at the electrode surface is verified by performance tests of real battery devices,showing that a surface-dominant,nanometer-thick graphite cathode outperforms a bulk-dominant,micrometer-thick graphite *** findings highlight the important surface effect of working electrodes in charge storage systems.

关键词： surface science methodology aluminum ion battery operando characterization surface effect

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Reversible Al^(3+) storage mechanism in anatase TiO_(2) cathode material for ionic liquid electrolyte-based aluminum-ion batteries

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Journal of Energy Chemistry 2020年第12期29卷 72-80页

作者： Na Zhu Feng Wu Zhaohua Wang Liming Ling Haoyi Yang Yaning Gao Shuainan Guo liumin Suo Hong Li Huajie Xu Ying Bai Chuan Wu Beijing Key Laboratory of Environmental Science and Engineering School of Materials Science and EngineeringBeijing Institute of TechnologyBeijing 100081China Collaborative Innovation Center of Electric Vehicles in Beijing Beijing 100081China Guangdong Engineering and Technology Research Center for Advanced Nanomaterials School of Environment and Civil EngineeringDongguan University of TechnologyDongguan 523808GuangdongChina Key Laboratory for Renewable Energy Beijing Key Laboratory for New Energy Materials and DevicesInstitute of PhysicsChinese Academy of Sciences.Beijing 100190China Key Laboratory of Materials Processing and Mold Ministry of EducationZhengzhou UniversityZhengzhou 450002HenanChina

Rechargeable aluminum ion battery(AIB) with high theoretical specific capacity, abundant elements and low cost engages considerable attention as a promising next generation energy storage and conversion system. Nevertheless, to date, one of the major barriers to pursuit better AIB is the limited applicable cathode materials with the ability to store aluminum highly reversibly. Herein, a highly reversible AIB is proposed using mesoporous TiO2 microparticles(M-TiO2) as the cathode material. The improved performance of Ti O2/Al battery is ascribed to the high ionic conductivity and material stability, which is caused by the stable architecture with a mesoporous microstructure and no random aggregation of secondary particles. In addition, we conducted detailed characterization to gain deeper understanding of the Al^(3+) storage mechanism in anatase Ti O2 for AIB. Our findings demonstrate clearly that Al^(3+)can be reversibly stored in anatase TiO2 by intercalation reactions based on ionic liquid electrolyte. Especially, DFT calculations were used to investigate the accurate insertion sites of aluminum ions in M-Ti O2 and the volume changes of M-TiO2 cells during discharging. As for the controversial side reactions in AIBs, in this work, by normalized calculation, we confirm that M-Ti O2 alone participate in the redox reaction. Moreover, cyclic voltammetry(CV) test was performed to investigate the pseudocapacitive behavior.

关键词： aluminum ion battery Anatase TiO_(2) Al-ion storage Intercalation reaction Pseudocapacitive behavior

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