title: Photoassisted Oxygen Reduction Reaction in H2-O2Fuel Cells.
abstract: The oxygen reduction reaction (ORR) is a key step in H2-O2fuel 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 H2-O2fuel cell, in which the open circuit voltage (Voc) increased from 0.64 to 1.18 V, and the short circuit current (Jsc) 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.
authors.affiliation: 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.
authors.forename: Bingqing
authors.initials: B
authors.lastname: Zhang
authors.affiliation: State Key Laboratory of Catalysis, Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, Liaoning, 116023, China.
authors.forename: Shengyang
authors.initials: S
authors.lastname: Wang
authors.affiliation: 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.
authors.forename: Wenjun
authors.initials: W
authors.lastname: Fan
authors.affiliation: State Key Laboratory of Catalysis, Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, Liaoning, 116023, China.
authors.forename: Weiguang
authors.initials: W
authors.lastname: Ma
authors.affiliation: 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.
authors.forename: Zhenxing
authors.initials: Z
authors.lastname: Liang
authors.affiliation: State Key Laboratory of Catalysis, Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, Liaoning, 116023, China.
authors.forename: Jingying
authors.initials: J
authors.lastname: Shi
authors.affiliation: 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.
authors.forename: Shijun
authors.initials: S
authors.lastname: Liao
authors.affiliation: State Key Laboratory of Catalysis, Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, Liaoning, 116023, China.
authors.forename: Can
authors.initials: C
authors.lastname: Li
keywords: electrocatalysis; fuel cells; oxygen reduction reaction; photocatalysis; polymers