在铁流电池中通过进化抑制和Cr3+/Cr2+激活的Mn2+辅助高容量保留
Tian-Ying Zhang1,2, Zheng-Rong Niu3, Bo Li3
1School of Chemistry and Chemical Engineering, Qinghai Normal University Xining 810008 China xunc@qhnu.edu.cn.
RSC advances
|January 8, 2026
概括
(Mn2+) 添加剂通过抑制进化和增强容量保留,显著改善铁氧化还原流电池性能. 这一突破为大型储能系统提供了稳定的解决方案.
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:
- 铁氧化还原流电池 (ICRFB) 对大规模储能充满希望.
- 寄生进化反应 (HER) 阻碍了ICRFB的长期运行.
研究的目的:
- 研究Mn2+作为ICRFB中的电解质添加剂的影响.
- 通过减轻HER,提高ICRFB的稳定性和性能.
主要方法:
- 用0.002 M Mn2+进行电解质修饰.
- 通过库伦比效率 (CE) 和容量保留测试进行性能评估.
- 密度函数理论 (DFT) 计算用于验证机制.
主要成果:
- Mn2+有效地抑制了HER,并加速了Cr3+和Fe2+的运动.
- 在40 mA cm-2时,CE从96.34%增加到97.15%.
- 100个循环后容量保留从39% (原始) 提高到73% (Mn2+-修改).
结论:
- 2+兴奋剂转移化潜力,抑制副作用反应.
- 通过Mn2+增加的电化学活性减少了电解质降解.
- 2+是高性能ICRFB的有希望的添加剂,提高了效率和寿命.
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