基于三电子转移的高容量有机- () 电池
Xinliang Li1,2, Yanlei Wang3, Junfeng Lu3
1Key Laboratory of Material Physics, Ministry of Education, School of Physics and Microelectronics, Zhengzhou University, Zhengzhou, 450052, China.
Angewandte Chemie (International ed. in English)
|September 1, 2023
概括
这项研究引入了一种新的三电子转移-电池. 它通过利用独特的和氧化还原对来提高电化学性能,实现了创纪录的能量密度.
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:
- 转换型电池的目的是最大限度地提高充电转移,以提高性能.
- 现有的素电池通常不充分利用电子传输模式,限制了它们的电化学效率.
- 开发先进的电池化学是高能量密度应用的关键.
研究的目的:
- 通过使用特定的和氧化还原对来实现三电子转移-电池.
- 为了研究这种新型电池系统的电化学性能和能量密度.
- 通过实验和计算方法阐明底层的氧化还原化学.
主要方法:
- 使用商业电解质和化物离子制造-素电池.
- 电化学表征包括静电循环,以观察放电高原和容量.
- 密度函数理论 (DFT) 计算以了解反应机制.
主要成果:
- 开发的Liidiye tetrabutylammonium triiodide (TBAI3) 细胞显示了3.97,3.40和3.85V的三个不同的排放高原.
- 实现了 631 mAh g-1 (基) 和 265 mAh g-1 (电极基) 的高特异性容量.
- 达到创纪录的高能量密度,高达2013 Wh kg-1 (基) 和845 Wh kg-1 (电极基).
结论:
- 这种新的间素策略使-素电池中的三电子转移过程成为可能.
- 这种方法显著提高了电化学性能,并实现了前所未有的能量密度.
- 这些发现为开发高能量密度素电池提供了有希望的新方向.
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