journal article·2020-06Open access

Oxidation‐etching induced morphology regulation of Cu catalysts for high‐performance electrochemical N2 reduction

Xuqiang Ji, Ting Wang, Qian Liu, Yongsong Luo, Siyu Lu, Guang Chen, Shuyan Gao, Abdullah M. Asiri, Xuping Sun

EcoMat· Volume 2· Issue 2

Abstract

Abstract Renewable‐electricity‐driven N2 reduction is an attractive approach for ambient NH3 synthesis, but active electrocatalysts are needed to enable the N2 reduction reaction. Monolithic electrodes with active components anchored on conductive supports provide many advantages like structural stability, large surface area, and low electrical resistance. Here, a novel “oxidation‐etching” strategy is proposed to carve the surface of Cu foam into structures of particles, cubes, and sheets for N2 reduction electrocatalysis. The optimal catalyst achieves a Faradic efficiency as high as 18% at −0.35 V vs reversible hydrogen electrode (RHE) and a large NH3 yield of 2.45 × 10−10 mol s−1 cm−1 at −0.40 V vs RHE in 0.1 M HCl. Notably, it also shows superior long‐term electrochemical durability, with the preservation of electro‐activity for at least 20 hours. image
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Research context

OpenAlex topics: Ammonia Synthesis and Nitrogen Reduction · Advanced Photocatalysis Techniques · Caching and Content Delivery

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Institute of Fundamental and Frontier Sciences University of Electronic Science and Technology of China Chengdu China

College of Materials Science and Engineering, Institute for Graphene Applied Technology Innovation, Collaborative Innovation Centre for Marine Biomass Fibers, Materials and Textiles of Shandong Province Qingdao University Qingdao China

Green Catalysis Center and College of Chemistry Zhengzhou University Zhengzhou China

The Key Laboratory of Life‐Organic Analysis and Key Laboratory of Pharmaceutical Intermediates and Analysis of Natural Medicine, School of Chemistry and Chemical Engineering Qufu Normal University Qufu China

School of Materials Science and Engineering Henan Normal University Xinxiang China

Chemistry Department, Faculty of Science & Center of Excellence for Advanced Materials Research King Abdulaziz University Jeddah Saudi Arabia

Funding

National Natural Science Foundation of China

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