钒酸盐
阳极
锂(药物)
钙
水热合成
材料科学
电化学
化学工程
离子
纳米结构
电极
钒
纳米技术
热液循环
无机化学
化学
冶金
医学
物理化学
有机化学
内分泌学
工程类
作者
Shaoyan Zhang,Kun Wang,Zhenghao Hou,Cuihong Sun,Yingna Hou,Danfeng Zhang,Fēi Li
出处
期刊:ACS applied nano materials
[American Chemical Society]
日期:2022-09-14
卷期号:5 (9): 12826-12835
被引量:2
标识
DOI:10.1021/acsanm.2c02700
摘要
The ability to control the composition and structure of inorganic compounds by simple synthesis methods is essential to the design and development of electrode materials of lithium-ion batteries (LIBs). Here we report the controllable synthesis of calcium vanadate micro/nanostructures via a simple hydrothermal method. By easily adjusting the pH value of a reaction system, a Ca10V6O25 straw-bundle-like structure, Ca2V2O7 microplatelet, and CaV6O16·3H2O sponge-like macrostructure can be selectively synthesized. The regulation mechanism of different calcium vanadate micro/nanostructures was investigated. In addition, CaV6O16·3H2O and CaV6O16·3H2O/GO self-standing papers were obtained by pressing the sponge-like macrostructure and vacuum filtration, respectively. The electrochemical performances of the CaV6O16·3H2O and CaV6O16·3H2O/GO papers as the self-standing and binder-free anodes for LIBs were investigated for the first time. The as-obtained CaV6O16·3H2O/GO hybrid paper anode exhibits a high discharge capacity of 664.0 mA h g–1 after 250 cycles at 200 mA g–1 and good cycling stability, demonstrating its potential application as a self-standing anode for LIBs.
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