Vanadium oxide cathode with synergistic engineering of calcium-ion intercalation and polyaniline coating for high performance zinc-ion batteries  

作　　者：Lin Zhang Xinghua Qin Lang Wang Zifang Zhao Liwei Mi Qiongqiong Lu 

机构地区：[1]Center for Advanced Materials Research,Zhongyuan University of Technology,Zhengzhou,450007,China [2]Institute of Materials and Technology,Dalian Maritime University,Dalian,116026,China [3]School of Chemistry and Chemical Engineering,Henan Institute of Science and Technology,Xinxiang,453000,China [4]Institute of Materials,Henan Academy of Sciences,Zhengzhou,450046,China [5]Leibniz Institute for Solid State and Materials Research(IFW)Dresden E.V.,Dresden,01069,Germany

出　　处：《Frontiers of Chemical Science and Engineering》2023年第9期1244-1253,共10页化学科学与工程前沿（英文版）

基　　金：This work was supported by the National Natural Science Foundation of China(Grant Nos.22101309,52103277 and U1804126);the Key Scientific and Technological Project of Henan Province(Grant No.222102240001);the Startup Research of Henan Academy of Sciences(Grant No.231817001).

摘　　要：Vanadium oxides as cathode for zinc-ion batteries have attracted much attention because of their high theoretical capacity,flexible layered structure and abundant resources.However,cathodes are susceptible to the collapse of their layered structure and the dissolution of vanadium after repeated long cycles,which worsen their capacities and cycling stabilities.Herein,a synergistic engineering of calcium-ion intercalation and polyaniline coating was developed to achieve the superior electrochemical performance of vanadium pentoxide for zinc-ion batteries.The pre-intercalation of calcium-ion between vanadium pentoxide layers as pillars increase the crystal structure’s stability,while the polyaniline coating on the cathodes improves the conductivity and inhibits the dissolution of vanadium.This synergistic engineering enables that the battery system based-on the polyaniline coated calcium vanadate cathode to deliver a high capacity of 406.4 mAh·g^(−1)at 1 A·g^(−1),an ultralong cycle life over 6000 cycles at 10 A·g^(−1)with 93%capacity retention and high-rate capability.The vanadium oxide cathode with synergistic engineering of calcium-ion intercalation and polyaniline coating was verified to effectively improve the electrochemical performance of zinc-ion batteries.

关 键 词：zinc-ion battery CaV8O_(2)0 polyaniline coating synergistic engineering high capacity long durability 

分 类 号：TM912[电气工程—电力电子与电力传动]