A V_(2)O_(3)@N-C cathode material for aqueous zinc-ion batteries with boosted zinc-ion storage performance

作     者：Huai-Zheng Ren Jian Zhang Bo Wang Hao Luo Fan Jin Tian-Ren Zhang An Ding Bo-Wen Cong Dian-Long Wang Huai-Zheng Ren;Jian Zhang;Bo Wang;Hao Luo;Fan Jin;Tian-Ren Zhang;An Ding;Bo-Wen Cong;Dian-Long Wang

作者机构：MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and StorageState Key Laboratory of Urban Water Resource and EnvironmentSchool of Chemistry and Chemical EngineeringHarbin Institute of TechnologyHarbin 150001China Tianneng GroupChangxing 313100China 

出 版 物：《Rare Metals》 (稀有金属（英文版）)

年 卷 期：2022年第41卷第5期

页      面：1605-1615页

核心收录：

学科分类：0808[工学-电气工程] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 

基　　金：the National Natural Science Foundation of China(Nos.51874110 and 51604089) the Natural Science Foundation of Heilongjiang Province(No.YQ2021B004) the Open Project of State Key Laboratory of Urban Water Resource and Environment(No.QA202138) 

主　　题：Zinc-ion batteries V_(2)O_(3)@N-C cathode Structural design Carbon layer N atom doping 

摘      要：The discontinuity of new types of clean energy,such as wind power and solar cells, has promoted the development of large-scale energy storage systems(EES).Rechargeable aqueous zinc-ion batteries(ZIBs) have received extensive attention due to their inherent safety and low cost. At this stage, the performance of ZIBs is still limited by cathode materials. In this work, we have constructed a ZIBs cathode material-V_(2)O_(3)@N–C, through surface coating and N atom doping. The N-doped carbon coating endows V_(2)O_(3)@N–C with excellent structural stability and enhances its electrical conductivity. As a result,V_(2)O_(3)@N–C cathode delivers exceptional reversible of Zn^(2+) intercalation/deintercalation. The fabricated Zn/V_(2)O_(3)@N–C batteries exhibit high capacity of 274.6 mAh·g^(-1) at 5 A·g^(-1) and excellent capacity retention of 94% after 2000 cycles. The reversible intercalation/deintercalation of Zn^(2+) in the V_(2)O_(3)@N–C cathode is proved by ex-situ testing methods. It is believed that this work should inject new vitality into the development of ZIBs cathode.