高活性-联合合碳纤维@石墨感觉电极,用于高性能氧化还原流电池
Xingrong Chen1, Chang Wu1, Yanrong Lv1
1School of Chemical Engineering, North China University of Science and Technology, Tangshan 063210, Hebei, China.
Journal of colloid and interface science
|August 19, 2024
概括
和联合合的石墨纤维电极显著提高了氧化还原流电池 (VRFB) 的效率和寿命. 这种新的合成方法提高了导电性和活性位点,以获得卓越的能量存储性能.
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:
- 氧化还原流电池 (VRFB) 对于电网规模的能源存储至关重要.
- 电极性能是VRFB效率和寿命的关键.
- 异构原子兴奋剂提供了一条增强电极功能的途径.
研究的目的:
- 为VRFBs开发新的和联合合的石墨纤维电极.
- 研究N和P兴奋剂对电极性能的协同效应.
- 提高VRFB的整体性能和寿命.
主要方法:
- 使用质子酸,电沉积和高温碳化,可控合成N,P联合合的石墨纤维电极.
- 使用H2SO4作为辅助剂和H3PO4作为剂.
- 使用密度函数理论 (DFT) 计算来理解反应机制.
主要成果:
- 协同的N和P兴奋剂产生了额外的缺陷结构和活性部位,提高了反应速度.
- 碳纤维的导电网络结构改善了电极连接,降低了内部电阻.
- 与空白电极相比,优化的电极在200 mA cm−2时实现了7.9%的更高能效.
结论:
- 在现场可控合成的综合方法为VRFBs产生了高性能,稳定的电极.
- 与N,P联合合的石墨纤维电极代表了储能技术的重大进步.
- 这项工作为设计下一代VRFB组件提供了宝贵的见解.
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