State Key Laboratory of Catalysis, Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, Liaoning, 116023, China.
Key Laboratory of Fuel Cell Technology of Guangdong Province & Key Laboratory of New Energy Technology of Guangdong University, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou, Guangdong, 510641, China.
Angew Chem Int Ed Engl. 2016 Nov 14;55(47):14748-14751. doi: 10.1002/anie.201607118. Epub 2016 Oct 20.
The oxygen reduction reaction (ORR) is a key step in H -O fuel cells, which, however, suffers from slow kinetics even for state-of-the-art catalysts. In this work, by making use of photocatalysis, the ORR was significantly accelerated with a polymer semiconductor (polyterthiophene). The onset potential underwent a positive shift from 0.66 to 1.34 V, and the current was enhanced by a factor of 44 at 0.6 V. The improvement was further confirmed in a proof-of-concept light-driven H -O fuel cell, in which the open circuit voltage (V ) increased from 0.64 to 1.18 V, and the short circuit current (J ) was doubled. This novel tandem structure combining a polymer solar cell and a fuel cell enables the simultaneous utilization of photo- and electrochemical energy, showing promising potential for applications in energy conversion and storage.
氧还原反应（ORR）是 H-O 燃料电池的关键步骤，但即使对于最先进的催化剂，其反应动力学也很慢。在这项工作中，通过利用光催化，使用聚合物半导体（聚噻吩）显著加速了 ORR。起始电位从 0.66V 正移至 1.34V，在 0.6V 时电流增强了 44 倍。在概念验证的光驱动 H-O 燃料电池中进一步证实了这一改进，其中开路电压（V）从 0.64V 增加到 1.18V，短路电流（J）增加了一倍。这种将聚合物太阳能电池和燃料电池结合在一起的新型串联结构能够同时利用光电和电化学能量，在能量转换和存储方面具有广阔的应用前景。
