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基于水/氧循环的生物光电化学系统用于太阳能储存和释放

He Zhang^1,2, Liang Huang^1,2, Junfeng Zhai¹

¹State Key Laboratory of Electroanalytical Chemistry , Changchun Institute of Applied Chemistry, Chinese Academy of Sciences , Changchun , Jilin 130022 , People's Republic of China.

Journal of the American Chemical Society

|September 27, 2019

概括

研究人员开发了一种新的生物光电化学系统 (BPECS), 这种创新装置通过有效地转化太阳能, 即使在黑暗中也能提供连续的电力.

科学领域:

可再生能源系统
电化学工程
材料科学

背景情况:

人工光电化学设备面临的挑战是由于阳光间歇性而提供一致的电力.
现有的光电化学电池 (PEC) 往往缺乏与储能解决方案的整合.
开发可靠的太阳能捕获和储存系统对于电网规模应用至关重要.

研究的目的:

设计和演示基于水/氧循环的生物光电化学系统 (BPECS),用于按需发电.
通过将电容电极集成到光生物燃料电池 (PBFC) 中来解决太阳能的间歇性.
提高人工PEC设备的兼容性和可行性.

主要方法:

将聚烯 (PPy) 电容电极集成到光生物燃料电池 (PBFC) 中,以创建BPECS.
实施自循环水/氧系统,以实现内在安全和成本效益.
采用另一种两步的能源转换过程:太阳能转化为化学/电能和化学转化为电能.

主要成果:

在BPECS中,最大输出密度为0.34±0.01 mW cm−2 (光) 和0.19±0.02 mW cm−2 (暗).
证明了长期稳定的循环性能,可有效地储存和释放太阳能.
通过综合设计,该系统表现出高效的太阳能利用率.

结论:

开发的BPECS提供了一种可行且本质上安全的方法来克服太阳能间歇性发电.
这种模块化和集成的系统设计提高了PEC,BFC和电容器设备之间的兼容性.
对于电网级光伏储能和未来的人工生物光电化学系统,BPECS具有显著的潜力.

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