用于高性能硫电池的天然聚醇增强离子选择性分离器,具有高硫负载和精益电解质的硫电池
Yanfei Yang1,2, Wankai Wang1,2, Junping Zhang1,2
1Research Center of Resource Chemistry and Energy Materials, State Key Laboratory for Oxo Synthesis and Selective Oxidation Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou, 730000, PR China.
Angewandte Chemie (International ed. in English)
|October 30, 2024
概括
绿茶中的多可以为稳定的硫电池创建先进的离子选择分离器. 这种环保方法增强了离子运输,并抑制了中间穿,提高了电池的性能.
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:
- 离子选择性分离器对于抑制-硫 (Li-S) 电池中可溶性中间的作用至关重要.
- 开发具有成本效益,环保和高性能离子选择性分离器仍然是一个重大挑战.
研究的目的:
- 使用绿茶衍生的多来制造先进的离子选择性分离器,以提高Li-S电池的稳定性.
- 研究这些新型分离器的离子传输和穿抑制能力.
主要方法:
- 绿茶衍生聚醇在标准聚烯分离器上自发沉积.
- 由此产生的天然聚醇增强离子选择性 (NPRIS24) 分离器的特征.
- 使用NPRIS24分离器在苛刻条件下测试Li-S电池 (高S负载,低电解质比,薄Li阳极).
主要成果:
- NPRIS24分离器表现出快速的离子传输和出色的可溶性多硫化物 (Li2S4,Li2S6,Li2S8) 抑制,并具有超低的穿速率.
- 分离器的离子选择性归因于化合物的高电子阴性和性质.
- 高性能Li-S电池在具有挑战性的条件下实现了稳定的循环,并在其他金属电池化学品 (LiFePO4,LCO) 中提高了性能.
结论:
- 天然多为设计先进的离子选择性分离器提供了一个有希望的,可持续的途径.
- NPRIS24分离器技术显著提高了Li-S和其他Li金属电池的稳定性和性能.
- 这种方法突显了生物衍生材料在下一代储能系统中的潜力.
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