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探索分层Bi₂Se₃六角血小板作为离子电池的阳极材料的电化学性能

Shaik M Abzal¹, Sumit Khatua¹, Kurapati Kalyan¹

¹Department of Physics, SRM University-AP, Amaravati, 522240, India. jatis.d@srmap.edu.in.

Physical chemistry chemical physics : PCCP

|September 25, 2024

概括

六角树脂化物 (Bi2Se3) 血小板显示出作为离子电池 (LIB) 的阳极材料的前景. 这些Bi2Se3血小板表现出卓越的电化学性能,包括LIB应用的高容量和稳定性.

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:

对离子电池 (LIB) 的需求不断增长,需要先进的阳极材料.
金属化物正在成为LIB阳极的候选者.
石化物 (Bi2Se3) 具有独特的分层结构,适用于电池应用.

研究的目的:

为了合成和表征六角形Bi2Se3血小板.
为了评估Bi2Se3作为LIBs中的阳极材料的电化学性能.
研究影响性能的反应动力学和结构性质.

主要方法:

用于Bi2Se3血小板制备的溶热合成.
电化学测试包括循环稳定性,速率能力和循环电压测量.
使用X射线衍射 (XRD),拉曼光谱,SEM,TEM,FTIR和XPS进行材料表征.

主要成果:

在100 mA g-1下达到556 mA hg-1的初始排放特定容量,并具有66.5%的库伦比效率.
证明了改善的循环稳定性,速率性能和放电电压配置.
确定了离子扩散和伪电容为高性能的主要贡献者,具有高离子扩散系数 (1.8 × 10-13 cm2 s-1) 和低电荷传输阻抗 (23 Ω).

结论:

六角Bi2Se3血小板是LIBs的可行和高性能阳极材料.
该材料的结构和运动性能支持其优秀的电化学行为.
对基于Bi2Se3的阳极的进一步研究可以推进LIB技术.

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