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Updated: Jul 9, 2025

Characterization of Electrode Materials for Lithium Ion and Sodium Ion Batteries Using Synchrotron Radiation Techniques

Characterization of Electrode Materials for Lithium Ion and Sodium Ion Batteries Using Synchrotron Radiation Techniques

Published on: November 11, 2013

多层梯度顺序阳极具有前所未有的储存.

Ying Li¹, Feng Wu^1,2, Yu Li^1,2

¹School of Materials Science and Engineering, Beijing Institute of Technology, Beijing, 100081, P. R. China.

Advanced materials (Deerfield Beach, Fla.)

|November 28, 2023

概括

研究人员为离子电池 (SIB) 开发了多层梯度排序 (MGO-Si). 这种新的阳极材料显著提高了储能和循环稳定性,为提高电池性能铺平了道路.

关键词:

梯度顺序结构结构的梯度顺序结构.阳极是一种阳极.储存机制是一种储存机制.离子电池离子电池电化学重建的普遍性电化学重建的普遍性

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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:

离子电池 (SIB) 中的晶阳极提供了高的理论容量,但由于储能效率差 (<40 mAh g-1).
在中缺乏有效的储存限制了SIB的实际应用,需要先进的阳极材料.

研究的目的:

通过提高的储存能力,为SIBs开发具有成本效益和高性能的阳极材料.
研究的原子级结构设计,以提高其电化学性能.

主要方法:

电化学重建被用来创建多层梯度有序 (MGO-Si) 与在位形成的短,中,长距离有序结构.
研究了MGO-Si的储存机制,并在SIB中评估了其性能,包括重建的Si / C复合材料.

主要成果:

在50 mA g-1下,MGO-Si表现出352.7 mAh g-1的高可逆容量和出色的循环稳定性 (在4000个循环后保持95.2%).
在MGO-Si的吸附间隔机制有助于提高特定容量 (339.5mAhg-1在100mAg-1).
重建的Si / C复合材料实现了449.5 mAh g-1的高可逆容量,超过了大多数碳酸阳极的性能.

结论:

开发的MGO-Si材料为SIB中高性能储存提供了一个有前途的解决方案.
电化学重建策略有效地提高了各种材料的容量,包括微Si,SiO2,SiC,石墨和TiO2,1.5-6倍.
这项工作为设计下一代电池技术的先进电极材料提供了新的途径.