通过浸于生物质衍生的多孔碳的原子集群来增强电活性和扩散,用于室温Na-S电池
Shen Fei Zhao1, Yingying Song2, Jiliang Zhang3
1School of Materials Science and Engineering, Suzhou University of Science and Technology, Suzhou 215009, China; School of Materials Science and Engineering, Anhui Polytechnic University, Wuhu 241000, China.
Journal of colloid and interface science
|December 28, 2025
概括
在多孔碳上的原子集群通过增加硫活性和防止聚硫化物穿来增强室温硫电池. 这将提高下一代储能系统的效率和稳定性.
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:
- 室温硫 (Na-S) 电池提供高能量密度和低成本.
- 由于硫阴极活性较差和聚硫化物穿效应,商业化受到阻碍.
研究的目的:
- 开发一种超越RT Na-S电池局限性的正极材料.
- 研究原子集群和生物质衍生的多孔碳的协同效应.
主要方法:
- 制造带有原子集群的生物质衍生多孔碳 (PC-Coac) 阴极.
- 组装的RT Na-S电池在以基电解质的电化学性能测试.
- 分析反应动力学,离子扩散和界面电阻.
主要成果:
- PC-Coac 阴极表现出高的催化活性和出色的电荷传输.
- 组装后的电池显示出高初始库伦比克效率 (76.5%),显著的速率能力 (628 mAh g-1在8 A g-1),以及稳定的循环 (528 mAh g-1在400个循环后在4 A g-1).
- 协同增强了硫的利用,减轻了多硫化物穿,并提高了电池的性能.
结论:
- 开发的PC-Coac材料显著提高了RT Na-S电池的性能.
- 金属原子集群和生物质衍生的多孔碳对先进的电池设计充满希望.
- 该研究提供了改善反应动力学和减轻体积膨胀压力的见解.
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