通过轻松的热解工艺用硫氧化碳作为一个卓越稳定的性能离子电池阳极
Jungjin Park1, Won Young An1, Keunho Lee1
1Graduate School of Convergence Science and Technology, Seoul National University 145 Gwanggyo-ro, Yeongtong-gu Suwon-Si Gyeonggi-do 16229 Republic of Korea parkat9@snu.ac.kr.
RSC advances
|September 23, 2024
概括
硫氧化碳化 (S-SiOC) 增强了离子电池阳极. 这种材料具有高容量,优良的循环寿命,并为先进的电池应用提供了改进的离子扩散.
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:
- 氧化碳 (SiOC) 由于其稳定性,显示出离子电池阳极的前景.
- 电导率差是SiOC阳极材料的一个主要限制.
- 开发提高SiOC导电性的策略对于实际应用至关重要.
研究的目的:
- 为了合成硫氧化碳化 (S-SiOC) 作为改进的阳极材料.
- 为了研究离子电池中S-SiOC的电化学性能.
- 了解硫在提高电池性能方面的作用.
主要方法:
- 从油和1-多德乙醇中简单的单热解合成S-SiOC.
- 电化学测试包括特定容量,循环寿命和质量负载评估.
- 循环电压测量 (CV) 和静电间歇定位技术 (GITT) 用于离子扩散分析.
主要成果:
- S-SiOC 电极在 1 A g-1 时显示出 650 mA h g-1 的高特异容量.
- 在2000个周期以1Ag-1的速度后,实现了89.2%的异常容量保留.
- 观察到高质量负载潜力 (高达2.2毫克-2厘米) 和增强的离子扩散性.
结论:
- 硫效应有效地改善了氧化碳化阳极的电化学性能.
- S-SiOC 具有出色的特定容量,循环稳定性和离子输送特性.
- 这种硫补充材料是高性能离子电池的可行候选者.
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