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层次的Ni₃V₂O₈@N-Doped碳空心双微球用于高性能离子存储

Yu Zhao¹, Xiaobin Li¹, Ning Li¹

¹School of Petrochemical Engineering, Lanzhou University of Technology, Lanzhou, 730050, China.

|April 16, 2024

概括

为离子电池开发了层次的和N-化碳空心微球. 这种新的纳米结构增强了稳定性和导电性,提高了电池性能和循环寿命.

科学领域:

材料科学材料科学材料科学
电化学电化学电化学
纳米技术纳米技术

背景情况:

过渡金属氧化物 (TMO) 由于其高能量密度,对于离子电池来说是一个有前途的阳极材料.
在电池循环期间的体积变化会破坏TMO电极结构,限制电池的寿命.

研究的目的:

设计和制造层次的Ni3V2O8@N-合碳 (Ni3V2O8@NC) 空心双微球.
评估它们作为离子电池 (LIB) 的电极材料的性能.

主要方法:

通过纳米粒子自组装制备Ni3V2O8@NC空心双微球.
纳米结构和电化学性质的表征.
在不同电流密度下的LIBs中测试电极性能.

主要成果:

空洞的微球结构提高了Ni3V2O8的利用效率和离子转移.
化碳层增强了结构稳定性和电导率.
在200个循环后,Ni3V2O8@NC电极的初始放电容量为1167.3 mAh g-1,在500个循环后为726.5 mAh g-1,在1 A g-1.1时为567.6 mAh g-1.

结论:

Ni3V2O8@NC空心双微球表现出卓越的循环稳定性和LIBs的高速率能力.
这项工作为设计复杂的多孔纳米结构用于先进的能量存储提供了新的见解.

关键词:

尼克尔瓦纳达特的时间阳极材料是一种阳极材料.核心-外结构核心-外结构离子电池是一种离子电池.用剂合碳的碳.

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