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纳米-尼/Co-PBA作为水性离子电池的高性能阴极材料

Yunshu Zeng¹, Yuyuan Wang¹, Zhen Huang¹

¹Hubei Engineering Laboratory of Automotive Lightweight Materials and Processing, New Materials and Green Manufacturing Talent Introduction and Innovation Demonstration Base, Hubei Provincial Key Laboratory of Green Materials for Light Industry, School of Materials and Chemical Engineering, Hubei University of Technology, 430068, Wuhan, People's Republic of China.

|August 21, 2023

概括

这项研究引入了用于水性离子电池 (ASIB) 的新型普鲁士蓝模拟 (PBA) 纳米粒子. 这些Ni/Co-PBA表现出高容量和出色的循环稳定性,推进了储能解决方案.

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
储能储能储能储能储能储能

背景情况:

普鲁士蓝色类似物 (PBA) 是水性离子电池 (ASIB) 的有希望的阴极材料,因为它们的结构稳定性和成本效益.
单种过渡金属PBA在水系统中具有有限的电荷存储能力,需要开发先进的材料.

研究的目的:

报告K_0.11Ni_0.39Co_0.79[Fe(CN) ₆·2.04H₂O纳米粒子 (Ni/Co-PBA) 作为ASIBs的高容量阴极的首次使用.
研究ASIB中Ni/Co-PBA的电化学性能和氧化还原机制.

主要方法:

Ni/Co-PBA纳米颗粒的合成和表征.
在ASIB中对Ni/Co-PBA进行电化学测试,包括循环电压测量和静电循环.
现场光谱和电化学技术 (XRD,FTIR,XPS,EIS,GITT) 用于分析反应机制和动力学.

主要成果:

/Co-PBA纳米粒子的初始容量为65mAh-1g.
在1000个循环后以1.0 A g-1达到80%的容量保留,证明了卓越的循环性能.
涉及CO和Fe离子的多电子还氧反应有助于高容量.

结论:

/Co-PBA是用于ASIB的高容量阴极材料,具有出色的循环稳定性.
开发的基于Ni/Co-PBA的ASIB提供了一个有前途的,高效和具有成本效益的储能技术.
对Ni/Co-PBA材料的进一步研究可以推进大规模的储能应用.

关键词:

水性离子电池水性离子电池阴极阴极是指一个阴极.普鲁士蓝的类似物是普鲁士蓝.卓越的循环稳定性卓越的循环稳定性

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