期刊
CHINESE CHEMICAL LETTERS
卷 34, 期 8, 页码 -出版社
ELSEVIER SCIENCE INC
DOI: 10.1016/j.cclet.2023.108572
关键词
Ammonium vanadate rods; Ethylene glycol reduction; Zn 2+storage; Cathode; Aqueous zinc ion battery
Various ammonium vanadate compounds were successfully synthesized through ethylene glycol (EG) regulated polyol-reduction strategy and hydrothermal reaction with solvent effect. The morphology and crystalline phase of the compounds evolved from dendritic (NH4)2V6O16 to rod-like NH4V4O10 and finally to lamellar (NH4)2V4O9 with increasing amount of EG. NH4V4O10 exhibited high initial capacity and stable cycling performance, attributed to its stable open-framework layered structure, favorable (001) interplanar spacing, and peculiar rod-like morphology, which facilitated highly reversible Zn2+ storage behaviors.
Ammonium vanadate compounds featuring large capacity, superior rate capability and light weight are regarded as promising cathode materials for aqueous zinc ion batteries (AZIBs). However, the control-lable synthesis of desired ammonium vanadates remains a challenge. Herein, various ammonium vana-date compounds were successfully prepared by taking advantage of ethylene glycol (EG) regulated polyol-reduction strategy and solvent effect via hydrothermal reaction. The morphology and crystalline phase of resultant products show an evolution from dendritic (NH4)2V6O16 to rod-like NH4V4O10 and finally to lamellar (NH4)2V4O9 as increasing the amount of EG. Specifically, the NH4V4O10 product exhibits a high initial capacity of 427.5 mAh/g at 0.1 A/g and stable cycling with a capacity retention of 90.4% after 50 0 0 cycles at 10 A/g. The relatively excellent electrochemical performances of NH4V4O10 can be ascribed to the stable open-framework layered structure, favorable (001) interplanar spacing, and peculiar rod-like mor-phology, which are beneficial to the highly reversible Zn2 + storage behaviors. This work offers a unique way for the rational design of high-performance cathode materials for AZIBs. & COPY; 2023 Published by Elsevier B.V. on behalf of Chinese Chemical Society and Institute of Materia Medica, Chinese Academy of Medical Sciences.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据