Improved Reversible Zinc Storage Achieved in a Constitutionally Crystalline-Stable Mn(VO3)2 Nanobelts Cathode |
| |
Authors: | Jiaqi Ke Yufei Zhang Yibo Zhang Minghui Ye Zicheng Zhang Yongchao Tang Xiaoqing Liu Prof Cheng Chao Li |
| |
Institution: | 1. School of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou, 510006 P. R. China;2. School of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou, 510006 P. R. China
Guangdong Provincial Key Laboratory of Plant Resources Biorefinery, Guangzhou, 510006 P. R. China;3. Institute of Process Engineering, Chinese Academy of Science, Beijing, 100190 P. R. China |
| |
Abstract: | Rechargeable zinc-ion batteries (ZIBs) are potential for grid-scale applications owing to their safety, low price, and available sources. The development of ZIBs cathode with high specific capacity, wide operating voltage window and stable cyclability is urgently needed in next-generation commercial batteries. Herein, we report a structurally crystalline-stable Mn(VO3)2 nanobelts cathode for ZIBs prepared via a facile hydrothermal method. The as-synthesized Mn(VO3)2 exhibited high specific capacity of 350 mAh g−1 at 0.1 A g−1, and maintained a capacity retention of 92 % after 10,000 cycles at 2 A g−1. It also showed good rate performance and obtained a reversible capacity of up to 200 mAh g−1 after 600 cycles at 0.2 A g−1 under −20 °C. The electrochemical tests suggest that Mn(VO3)2 nanobelts impart fast Zn2+ ions migration, and the introduction of manganese atoms help make the structures more indestructible, leading to a good rate performance and prolonged cycle lifespan. |
| |
Keywords: | cathode energy storage device manganese vanadate tunnel structure zinc ion batteries |
|
|