一个无金属有机-无机水流电池
Brian Huskinson1, Michael P Marshak2, Changwon Suh3
11] Harvard School of Engineering and Applied Sciences, 29 Oxford Street, Cambridge, Massachusetts 02138, USA [2].
Nature
|January 10, 2014
概括
这项研究介绍了一种新的无金属流电池,使用有机金来有效储存能量. 这项技术为太阳能和风能等可再生能源的电网规模存储提供了具有成本效益的解决方案.
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
- 可再生能源储存可再生能源的储存
背景情况:
- 不断增长的可再生能源需要先进的大规模电能储存.
- 目前的固体电极电池不足以调节间歇性电源.
- 流电池提供可扩展的功率和能量,但受到材料成本和催化剂要求的限制.
研究的目的:
- 为流动电池开发一种具有成本效益和丰富的材料.
- 探索基于金的化学在电网规模储能方面的潜力.
- 为了展示具有高性能和稳定的无金属流电池系统.
主要方法:
- 在水性硫酸中研究了9,10-甲基-2,7-硫酸 (AQDS) 的氧化还原化学反应.
- 使用AQDS/基和Br2/Br(-) 氧化还原对与碳电极构建了一个水流电池.
- 通过功能组修改评估功率密度,循环稳定性和潜在调整.
主要成果:
- AQDS证明了快速,可逆的两个电子,两个质子的减少.
- 化流电池实现了超过0.6W/cm2的峰值功率密度.
- 经过证明,每周期的容量保持率>99%,稳定性很好.
- 功能化的AQDS显示了增加的开放电路潜力,表明可调节的性能.
结论:
- 无金属基流电池为大规模的电能存储提供了一个有希望的,低成本的替代方案.
- 这种有机方法可以调整电化学特性,提高电池电压和性能.
- 开发的系统是迈向可持续和负担得起的电网规模储能解决方案的重要一步.
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