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光能MoS₂/CNT阴极用于广泛温度范围的高性能Li-CO₂电池

Tingsong Hu¹, Wenyi Lian¹, Kang Hu¹

¹Jiangsu Key Laboratory of Materials and Technologies for Energy Storage, College of Materials Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing, 210016, People's Republic of China.

Nano-micro letters

|September 20, 2024

概括

使用MoS2/CNT阴极的光能化二氧化碳 (Li-CO2) 电池克服了低温性能问题. 这种太阳能驱动的方法提高了极端环境的效率和稳定性.

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:

二氧化碳 (Li-CO2) 电池在极端环境中表现有希望,但由于反应动力学缓慢,在零度以下的温度下表现不佳.
在太空探索等应用中,开发能够在广泛的温度范围内有效运行的储能解决方案至关重要.

研究的目的:

利用可持续的太阳能开发一个具有广泛工作温度范围的光能化Li-CO2电池.
为了应对缓慢的反应动力学和在低温下降低二氧化碳电池的性能下降的挑战.

主要方法:

为正极制造一个无粘合剂的MoS2/碳纳米管 (CNT) 光电极.
利用MoS2的光电特性来增强在照明下减少CO2和Li2CO3的分解.
在不同温度下研究MoS2/CNT阴极的协同光电和光热效应.

主要成果:

在室温下照明的电池实现了2.95V的高放电电压,3.27V的减轻充电电压,90.2%的能效,以及超过120个循环.
在-30°C时,由于MoS2/CNT阴极的协同机制,电池呈现最小的极化 (0.45V).
该MoS2/CNT光电极促进了光激发载体的高效生成和转移,加速了反应动力学.

结论:

光能化策略有效地克服了二氧化碳电池的充电过量和能效限制.
莫斯2/CNT阴极为Li-CO2电池提供了广泛的工作温度范围,证明了极端环境的巨大潜力.
可持续的太阳能可以用来提高先进电池技术的性能.

关键词:

运动学运动学二氧化碳电池的电池为LiCO2电池.在MoS2的基础上,MoS2 摄影能量为光源提供能量.有广泛的操作温度.

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