Ultrahigh-energy and-power aqueous rechargeable zinc-ion microbatteries based on highly cation-compatible vanadium oxides  

作　　者：Sheng-Bo Wang Qing Ran Wu-Bin Wan Hang Shi Shu-Pei Zeng Zi Wen Xing-You Lang Qing Jiang 

机构地区：[1]Key Laboratory of Automobile Materials(Jilin University),Ministry of Education and School of Materials Science and Engineering,Jilin University,Changchun 130022,China [2]State Key Laboratory of Automotive Simulation and Control,Jilin University,Changchun 130022,China

出　　处：《Journal of Materials Science & Technology》2022年第25期159-166,共8页材料科学技术（英文版）

基　　金：supported by the National Natural Science Foundation of China (Nos. 51871107, 52130101, 51631004);Top-notch Young Talent Program of China (W02070051);Chang Jiang Scholar Program of China (Q2016064);the Program for JLU Science and Technology Innovative Research Team (JLUSTIRT, 2017TD-09);the Fundamental Research Funds for the Central Universities, the Program for Innovative Research Team (in Science and Technology) in University of Jilin Province。

摘　　要：Aqueous multivalent-metal-ion intercalation chemistries hold genuine promise to develop safe and powerful microbatteries for potential use in many miniaturized electronics.However,their development is beset by state-of-the-art electrode materials having practical capacities far below their theoretical values.Here we demonstrate that high compatibility between layered transition-metal oxide hosts and hydrated cation guests substantially boost their multi-electron-redox reactions to offer higher capacities and rate capability,based on typical bipolar vanadium oxides preintercalated with hydrated cations(M_(x)V_(2)O_(5)).When seamlessly integrated on Au current microcollectors with a three-dimensional bicontinuous nanoporous architecture that offers high pathways of electron transfer and ion transport,the constituent Zn_(x)V_(2)O_(5) exhibits specific capacity of as high as∼527 mAh g^(−1) at 5 mV s^(−1) and retains∼300 mAh g^(−1) at 200 mV s^(−1) in 1 M ZnSO_(4) aqueous electrolyte,outperforming the M_(x)V_(2)O_(5)(M=Li,Na,K,Mg).This allows aqueous rechargeable zinc-ion microbatteries constructed with symmetric nanoporous Zn_(x)V_(2)O_(5)/Au interdigital microelectrodes as anode and cathode to show high-density energy of∼358 mWh cm^(−3)(a value that is forty-fold higher than that of 4 V/500μAh Li thin film battery)at high levels of power delivery.

关 键 词：Multivalent metal ions Aqueous rechargeable batteries MICROBATTERIES Nanoporous metals Metal/oxide composites 

分 类 号：TQ135.11[化学工程—无机化工] TM912[电气工程—电力电子与电力传动]