Photo Energy-Enhanced Oxygen Reduction and Evolution Kinetics in Zn-Air Batteries
Source abstract
Abstract
Harvesting solar energy directly to boost the sluggish kinetics of oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) on an air cathode is a promising approach. Herein, we synthesize a step-scheme (S-scheme) titanium dioxide-indium selenide (TiO 2 -In 2 Se 3 ) heterojunction catalyst. The onset potential in ORR under light illumination reaches 1.28 V and the onset potential decreases to 0.48 V in OER. When an S-scheme TiO 2 -In 2 Se 3 heterojunction is exposed to light, photogenerated electrons at the conduction band (CB) of TiO 2 migrate to the valence band (VB) of In 2 Se 3 due to the built-in electric field. The photogenerated electrons with strong reduction capability on the CB of In 2 Se 3 and the holes with strong oxidation capability on the VB of TiO 2 boost the cathode reaction kinetics (ORR/OER). The excellent outcome reveals tremendous commercial potential of photo-enhanced Zn-air batteries.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Advanced Photocatalysis Techniques · Electrocatalysts for Energy Conversion · Quantum Dots Synthesis And Properties
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
College of Information Science and Technology, Donghua University, Shanghai 201620, P.R. China
College of Science, Donghua University, Shanghai 201620, P.R. China
School of Mathematics, Physics and Statistics, Shanghai University of Engineering Science, Shanghai 201620, China
Shanghai Institute of Intelligent Electronics and Systems, Donghua University, Shanghai 201620, China
Department of Physics, Department of Materials Science and Engineering, and Department of Biomedical Engineering, City University of Hong Kong, Tat Chee Avenue, Kowloon 999077 Hong Kong, China
Funding
City University of Hong Kong · Donghua University
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