和空间限制促进BiSSe-SSePAN的固体-固体转换动力学,以在广泛的温度范围内有效地储存/离子
Fuyu Xiao1, Xinye Li1, Songwei Yang2
1Engineering Research Center of Polymer Green Recycling of Ministry of Education, Fujian Key Laboratory of Pollution Control & Resource Reuse, College of Environmental and Resources, Fujian Normal University, Fuzhou, Fujian 350007, China.
Journal of colloid and interface science
|September 18, 2025
概括
这项研究引入了一种新的复合阳极材料BiSSe-SSePAN,用于高性能/离子电池. 该材料表现出增强的导电性和稳定性,使长周期寿命和广泛的温度操作成为可能.
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:
- 硫化物 (Bi2S3) 由于其高容量,是/离子电池 (SIB/PIB) 的一个有前途的阳极材料.
- 实际应用受到电导率差,体积波动和运动缓慢等因素的阻碍.
- 像封闭工程和异质原子兴奋剂这样的协同战略可以克服这些局限性.
研究的目的:
- 为先进的SIB/PIB开发一种复合材料,解决Bi2S3的局限性.
- 通过替代和封闭来增强Bi2S3的电化学性能.
- 评估材料在囊细胞和广泛温度环境中的实际应用潜力.
主要方法:
- 在替代硫化 (SSePAN) 中嵌入替代硫化聚烯 (SSePAN) 的替代硫化硫化硫化硫化硫化硫化硫化硫化硫化硫化硫化硫化硫化硫化硫化硫化硫化硫化硫化硫化硫化硫化 (BiSSeSe) 的合成.
- 复合材料 (BiSSe-SSePAN) 的结构和电化学性质的表征.
- 测试BiSSe-SSePAN作为SIB/PIB中的阳极,并使用Na3V2(PO4) 3 (NVP) 组装完整细胞.
主要成果:
- BiSSe-SSePAN复合材料显示电导率显著提高,并加速了氧化还原转换.
- 通过SSePAN矩阵的封闭有效地防止了纳米粒子聚合,并减轻了体积变化.
- 取得了优异的SIB/PIB性能:高可逆容量 (275 mAh g-1),优越的速率能力 (15 A g-1),以及长周期寿命 (38,000 个周期).
- 在广泛的温度范围内 (-15°C至50°C) 观察到稳定的运行.
- 一个BiSSe-SSePAN//NVP全电池在500个循环中保持了375mAhg-1在2Ag-1.
- 一个BiSSe-SSePAN//NVP袋式电池在0.1 A g-1.的400个循环后保留了146mAh.
结论:
- 开发的BiSSe-SSePAN复合物有效地解决了Bi2S3对高性能SIB/PIB的局限性.
- 兴奋剂和封闭工程的协同战略为先进的硫化金属阳极提供了可行的途径.
- 该材料显示出在储能设备中的实用应用的巨大潜力,包括袋式电池和广泛温度操作.
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