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Carbon-Based Metal-Free Catalysts for Key Reactions Involved in Energy Conversion and Storage
Shenlong Zhao1, Da-Wei Wang2, Rose Amal2
1UNSW-BUCT-CWRU International Joint Laboratory, School of Chemical Engineering, The University of New South Wales, Sydney, NSW, 2052, Australia.
Abstract:
Electrocatalysts are key for renewable energy technologies and other important industrial processes. Currently, noble metals and metal oxides are the most widely used catalysts for electrocatalysis. However, metal-based catalysts often suffer from multiple disadvantages, including high cost, low selectivity, poor durability, impurity poisoning and fuel crossover effects, and detrimental effects on the environment. Therefore, carbon-based metal-free catalysts have received increasing interest as promising electrocatalysts for advanced energy conversion and storage. Recently, tremendous progress has been achieved in the development of low-cost, efficient carbon-based metal-free catalysts for renewable energy technologies and beyond. Here, a concise, but comprehensive and critical, review of recent advances in the field of carbon-based metal-free catalysts is provided. A brief overview of various reactions involved in renewable energy conversion and storage, including the oxygen reduction reaction, hydrogen evolution reaction, oxygen evolution reaction, carbon dioxide reduction reaction, nitrogen reduction reaction, and bifunctional/multifunctional electrocatalysis, along with some challenges and opportunities, is presented.
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