Introducing Ce ions and oxygen defects into V_(2)O_(5)nanoribbons for efficient aqueous zinc ion storage  

作　　者：Mingying Bao Zhengchunyu Zhang Xuguang An Jie Liu Jinkui Feng Baojuan Xi Shenglin Xiong 

机构地区：[1]Key Laboratory of Colloid and Interface Chemistry,Ministry of Education,School of Chemistry and Chemical Engineering,State Key Laboratory of Crystal Materials,Shandong University,Jinan 250100,China [2]Key Laboratory of Mechanical Engineering of Education,School of Mechanical Engineering,Chengdu University,Chengdu 610106,China [3]Key Laboratory of High Performance Ceramics and Superfine Microstructure,Shanghai Institute of Ceramics,Chinese Academy of Sciences,Shanghai 200050,China [4]School of Materials Science and Engineering,Shandong University,Jinan 250061,China

出　　处：《Nano Research》2023年第2期2445-2453,共9页纳米研究（英文版）

基　　金：financial support provided by the National Natural Science Foundation of China(Nos.U21A2077,21971145,and 21871164);the Taishan Scholar Project Foundation of Shandong Province(No.ts20190908);the Natural Science Foundation of Shandong Province(Nos.ZR2021ZD05 and ZR2019MB024);Young Scholars Program of Shandong University(No.2017WLJH15).

摘　　要：Cost-effectively,eco-friendly rechargeable aqueous zinc-ion batteries(AZIBs)have reserved widespread concerns and become outstanding candidate in energy storage systems.However,the progress pace of AZIBs suffers from limitation of suitable and affordable cathode materials.Herein,a double-effect strategy is realized in a one-step hydrothermal treatment to prepare V_(2)O_(5)nanoribbons with intercalation of Ce and introduction of abundant oxygen defects(Od-Ce@V_(2)O_(5))to enhance electrochemical performance synergistically.Coupled with the theoretical calculation results,the introduction of Ce ions intercalation and oxygen vacancies in V2O5 structure enhances the electrical conductivity,reduces the adsorption energy of zinc ions,enlarges the interlayer distance,renders the structure more stable,and facilitates rapid diffusion kinetics.As expected,the desirable cathode delivers the reversible capacity of 444 mAh·g^(−1)at 0.5 A·g^(−1)and shows excellent Coulombic efficiency,as well as an extraordinary energy density of 304.9 Wh·kg^(−1).The strategy proposed here may aid in the further development of cathode materials with stable performance for AZIBs.

关 键 词：DOUBLE-EFFECT Ce element doping oxygen defects Od-Ce@V_(2)O_(5) aqueous zinc-ion batteries 

分 类 号：O64[理学—物理化学]