关于近似-O电池中的LiI氧化调解的洞察:溶解效应和单片氧的演变
Angelica Petrongari1, Vanessa Piacentini1, Adriano Pierini1
1Department of Chemistry, Sapienza University of Rome, P.le Aldo Moro 5, Rome 00185, Italy.
ACS applied materials & interfaces
|December 13, 2023
概括
氧电池使用化作为氧化还原介质. 溶剂影响介质性能,G4抑制降解和单一氧释放,比DMSO更好地进行电池循环.
科学领域:
- 电化学 电化学 电化学
- 材料科学 材料科学 材料科学
- 储能 储能 储能 储能 储能 储能
背景情况:
- 氧近距离电池 (aLOB) 理论上具有很高的能量密度,但由于寄生性反应,其周期寿命较短.
- 在aLOB中,氧进化反应 (OER) 需要高的超电位,这阻碍了实际应用.
- 研究还氧化调解剂 (RMs) 降低OER过量的潜能并提高电池性能.
研究的目的:
- 研究化 (LiI) 作为aLOBs中的氧化还原媒介的作用.
- 检查溶剂极性 (DMSO与G4) 对LiI介导的降解化学和单片氧释放的影响.
- 了解LiI催化OER中的溶解,降解和氧化还原调解之间的相互作用.
主要方法:
- 在近距离的氧电池中对含有LiI的电解质进行电化学测试.
- 使用极性 (DMSO) 和低极性 (G4) 溶剂环境进行比较分析.
- 研究降解途径和单片氧 (1O2) 生产.
主要成果:
- 基于DMSO的电解质中的化会导致显著的降解,并释放单片氧 (1O2),损害细胞性能.
- 在基于G4的电解质中,单片氧释放被抑制,从而提高了循环能力.
- 观察到溶剂特性,LiI氧化还原调解和降解化学之间存在强烈的相关性.
结论:
- 溶剂的选择极大地影响了aLOBs中的LiI氧化还原介质的有效性和降解途径.
- 像G4这样的低极性溶剂有利于减轻LiI诱导的降解,并提高aLOB循环寿命.
- 对溶剂介质相互作用的进一步研究对于开发稳定和高性能aLOBs至关重要.
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