化学
氧化还原
电化学
质子交换膜燃料电池
生物量(生态学)
电解质
催化作用
电子转移
燃料电池
化学工程
无机化学
电极
有机化学
物理化学
工程类
地质学
海洋学
作者
Colin W. Anson,Shannon S. Stahl
出处
期刊:Chemical Reviews
[American Chemical Society]
日期:2020-03-27
卷期号:120 (8): 3749-3786
被引量:129
标识
DOI:10.1021/acs.chemrev.9b00717
摘要
Mediated fuel cells are electrochemical devices that produce power in a manner similar to that of conventional proton exchange membrane fuel cells (PEMFCs). They differ from PEMFCs in their use of redox mediators dissolved in liquid electrolyte to conduct oxidation of the fuel or reduction of the oxidant, typically O2, in bulk solution. The mediators transport electrons (and often protons) between the electrode and the catalysts or chemical reagents in solution. This strategy can help overcome many of the challenges associated with conventional fuel cells, including managing complex multiphase reactions (as in O2 reduction) or the use of challenging or heterogeneous fuels, such as hydrocarbons, polyols, and biomass. Mediators are also commonly used in enzymatic fuel cells, where direct electron transfer from the electrode to the enzymatic active site can be slow. This review provides a comprehensive survey of historical and recent mediated fuel cell efforts, including applications using chemical and enzymatic catalysts.
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