甲硫酸盐作为一种新型的超级状物质在高温下
Delyana Marinova1, Mariya Kalapsazova1, Zlatina Zlatanova2
1Institute of General and Inorganic Chemistry, Bulgarian Academy of Sciences, 1113 Sofia, Bulgaria.
Materials (Basel, Switzerland)
|July 14, 2023
概括
硫酸作为超级电板电极材料具有前景,特别是在高温下. 2Mn(SO4) 2表现出卓越的性能,在60°C时达到高能量密度.
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:
- 超级电池装置需要带有混合储能机制的电极材料.
- 高温性能对于许多超级电池应用至关重要.
研究的目的:
- 为了研究硫酸作为超级电池的新型电极材料.
- 为了评估它们在高温 (20-60°C) 的电化学性能.
主要方法:
- 通过冷干燥和热处理合成Li2Mn (SO4) 2和Li2Mn (SO4) 3.
- 用碳酸盐和离子液体电解质在离子电池中的电化学评估.
- 使用现场拉曼光谱和现场XRD/TEM进行稳定性分析.
主要成果:
- 硫酸表现出一种依赖电解质和温度的混合Li+储存机制.
- 2Mn (((SO4) 2) 性能优于2Mn (((SO4) 3 ,在60°C时达到280Wh/kg和11000W/kg.
- 在现场循环检测显示,Li2Mn(SO4) 2转化为Li2Mn2(SO4) 3,从而提高了储存性能.
结论:
- 2Mn(SO4) 2是高温超级电容器电极材料的有希望的候选材料.
- 观察到的转变有助于提高电化学性能.
- 硫酸为先进的储能设备提供了可行的途径.
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