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一种具有超长周期性能的高压阴极材料,用于离子电池

Jiaqi Li¹, Zixin Liang¹, Yuqin Jin¹

¹School of Energy and Power Engineering, Nanjing University of Science and Technology, Nanjing, 210094, China.

|March 10, 2024

概括

这项研究使用碳上限和兴奋剂增强为离子电池 (SIB) 的基聚离子材料. 经过修改的材料显示出异常的循环稳定性和容量保留,使其对SIB应用具有前景.

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:

基于的聚离子材料由于高电压和稳定性,对离子电池 (SIB) 是有前途的.
碳覆盖和兴奋剂增强了聚离子化合物的性能和循环稳定性.

研究的目的:

为了改善SIBs的基聚离子材料的电化学特性.
为了研究碳上限和散装阶段兴奋剂对Na3V2(PO4) 的影响3.3.

主要方法:

通过碳封闭和散装阶段兴奋剂合成Na3V(PO3) 3N/C.
在SIB中对改性材料进行电化学测试,包括在2C和10,000个周期中循环运行.
在循环过程中分析结构稳定性和体积变化.

主要成果:

优化的Na3V(PO3) 3N/C表现出增强的电磁感应强度和结构稳定性.
在2°C的500个循环后,在4V电压平台上,异常循环能力为96.11%.
在2°C的10,000个循环后,由于近零应变性 (体积变化为0.12%) 导致了70.26%的令人印象深刻的容量保留.

结论:

碳封闭和散装阶段兴奋剂显著提高了基于的酸盐材料的电化学性能.
开发的Na3V(PO3) 3N/C显示出出色的循环稳定性和SIB的容量保留.
本文介绍了一种基于的稳定酸盐材料的简单且具有成本效益的合成方法.

关键词:

大量阶段的兴奋剂.骑自行车的稳定性骑自行车的稳定性几乎为零的压力.在离子电池中使用.基于的聚离子材料是基于的.

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