对于高度可逆的基聚化氧化还原流电池的粉介导的合体化学
Zhiquan Wei1, Zhaodong Huang1,2, Guojin Liang3
1Department of Materials Science and Engineering, City University of Hong Kong, Hong Kong, China.
Nature communications
|May 7, 2024
概括
我们开发了一种新型的水性-流电池,使用-粉类催解物来防止材料交叉. 这提高了性能,并降低了电网规模储能成本.
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:
- 水性-流电池具有使用低成本膜进行大规模储能的潜力.
- 关键的挑战包括由于聚化交叉造成的产能损失和低库伦比克效率,限制了电网级应用.
研究的目的:
- 为水性-流电池开发一种新型的阴解体系统,可以抑制聚化交叉.
- 为了提高库伦比克效率,功率密度和循环稳定性,用于电网规模的储能应用.
主要方法:
- 通过化学吸收诱导的聚合,利用环状化学制造具有扩大活性物质大小的粉催化剂.
- 研究了聚合性阴解体的尺寸选效应,以减轻通过多孔膜的聚化交叉.
- 测试了开发的流电池的性能,包括功率密度,库伦比效率和在高温下循环稳定性.
主要成果:
- 在37.5 mA cm-2下达到42 mW cm-2的高功率密度,库伦比效率超过98%.
- 在32.4Ah L-1 (50%充电状态) 的200个周期中,即使在50°C,也证明了长时间的循环稳定性.
- 与光伏组件集成了一个缩放式流量电池模块,展示了实用的可再生能源储能.
结论:
- 开发的-粉阴解质有效抑制聚酸交叉,使高导电性多孔膜的使用成为可能.
- 流电池表现出卓越的性能指标和成本效益,潜在的安装成本降低了14.3倍.
- 这项技术显示出对具有竞争力的电网规模可再生能源存储的重大前景.
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