Β-VO2/carbon nanotubes core-shelled microspheres and their applications for advanced cathode in aqueous zinc ion batteries. (20th December 2021)

• Record Type: Journal Article
• Authors: Fan, Xiankai; Wen, Xiaoyu; Tang, Yuan; Zhou, Wei; Xiang, Kaixiong; Chen, Han
• Is Part Of: Electrochimica acta. Volume 400(2021)
• Publication Date: 2021-12-20
• Subjects: Aqueous zinc-ion batteries -- β-VO2 -- Core-shelled microspheres -- Capacity retention; Electrochemistry -- Periodicals; Electrochemistry, Industrial -- Periodicals; 541.37
• DOI: 10.1016/j.electacta.2021.139425
• Languages: English
• ISSNs: 0013-4686

Abstract

Abstract: The dissolution of cathode material is imminently resolved in the commercial application of aqueous zinc-ion batteries (ZIBs). The β-VO2 /carbon nanotubes (CNTs) microspheres with various constructions were acquired by the ultrasonic atomization depositions. β-VO2 /CNTs core-shelled microspheres, which the VO2 cores are homogeneously covered by CNTs shells, can suppress more effectively the VO2 dissolution. The β-VO2 / CNTs core-shelled microspheres exhibited a higher capacity of 380 mAh g −1 at the current density of 0.05 A g −1, and maintained a steadier capacity retention of 80% after 7800 cycles. The construction of perfect CNTs shells is considerably effective to restrain the dissolution of β-VO2 and improve the cycle stability.