High-performance magnesium/sodium hybrid ion battery based on sodium vanadate oxide for reversible storage of Na^(+)and Mg^(2+)  

作　　者：Xiaoke Wang Titi Li Xixi Zhang Yaxin Wang Hongfei Li Hai-Feng Li Gang Zhao Cuiping Han 

机构地区：[1]Institute of Applied Physics and Materials Engineering,University of Macao,Avenida da Universidade,Taipa,Macao 999078,China [2]School of Physics and Technology,University of Jinan,Jinan 250022,Shandong,China [3]Songshan Lake Materials Laboratory,Dongguan 523808,Guangdong,China [4]Faculty of Materials Science and Energy Engineering,Shenzhen University of Advanced Technology,Shenzhen 518055,Guangdong,China [5]Institute of Technology for Carbon Neutrality,Shenzhen Institute of Advanced Technology,Chinese Academy of Sciences,Shenzhen 518055,Guangdong,China

出　　处：《Journal of Energy Chemistry》2024年第9期79-88,共10页能源化学（英文版）

基　　金：the financial support from the National Natural Science Foundation of China, China (22005207, 52261160384);the Guangdong Basic and Applied Basic Research Foundation, Guangdong Province, China (2019A1515011819);the Outstanding Youth Basic Research Project of Shenzhen, Shenzhen, China (RCYX20221008092934093);the Joint Funds of the National Natural Science Foundation of China, China (U22A20140);the Science and Technology Development Fund, Macao SAR (0090/2021/A2 and 0049/2021/AGJ)

摘　　要：Magnesium ion batteries(MIBs)are a potential field for the energy storage of the future but are restricted by insufficient rate capability and rapid capacity degradation.Magnesium-sodium hybrid ion batteries(MSHBs)are an effective way to address these problems.Here,we report a new type of MSHBs that use layered sodium vanadate((Na,Mn)V_(8)O_(20)·5H_(2)O,Mn-NVO)cathodes coupled with an organic 3,4,9,10-perylenetetracarboxylic diimide(PTCDI)anode in Mg^(2+)/Na^(+)hybrid electrolytes.During electrochemical cycling,Mg^(2+)and Na^(+)co-participate in the cathode reactions,and the introduction of Na^(+)promotes the structural stability of the Mn-NVO cathode,as cleared by several ex-situ characterizations.Consequently,the Mn-NVO cathode presents great specific capacity(249.9 mA h g^(−1)at 300 mA g^(−1))and cycling(1500 cycles at 1500 mA g^(−1))in the Mg^(2+)/Na^(+)hybrid electrolytes.Besides,full battery displays long lifespan with 10,000 cycles at 1000 mA g^(−1).The rate performance and cycling stability of MSHBs have been improved by an economical and scalable method,and the mechanism for these improvements is discussed.

关 键 词：Aqueous battery Hybrid ion battery Mg^(2+)/Na^(+)co-intercalation High-rate performance Organic-water hybrid electrolyte 

分 类 号：TM912[电气工程—电力电子与电力传动]