博文
云师大物电学院朱挺团队在Journal of Materials Chemistry A上发表最新成果
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2024年11月25日，Royal Society of Chemistry 旗下知名期刊《Journal of Materials Chemistry A》在线发表了云南师范大学物理与电子信息学院张伟斌、朱挺团队的最新研究成果《Direct utilization of light energy to promote the power density of zinc–air batteries using Co3O4@CuxO air photocathodes with porous octahedral superstructures†》云南师范大学物理与电子信息学院朱挺为通讯作者。
Abstract
The commercialization of zinc–air batteries (ZABs) is essentially limited by low power density as well as poor cycling stability. Herein, photo-sensitive air cathode materials composed of CuxO (referred to as CuO/Cu2O) and Co3O4 with porous octahedral superstructures were prepared to promote the power density of ZABs. The highly electroactive Co3O4 species were grown against the CuxO octahedral particles through heat treatment, forming a homogeneous interspersion of Co3O4 and CuxO (Co3O4@ CuxO) with a reduced Gibbs free energy for OOH*. In virtue of the enhanced light absorption, enriched electroactivity, porous superstructures, and lower energy barrier, the as-prepared Co3O4@CuxO air photocathode can achieve a lower charge potential of 1.759 V than that obtained without light (1.886 V), exhibiting a considerable energy saving of 6.7%. Moreover, the fabricated ZAB cells can deliver a maximum specific capacity of 759.12 mA h g−1 with a high power density of 76 mW cm−2, corresponding to light enhancements of 7.24% and 31%, respectively. The as-fabricated ZABs also exhibited a good stability up to 160 hours under light irradiation, indicating a promising direct utilization of light energy for ZAB cells.
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扩展阅读：
云师大物电学院张伟斌、朱挺在硅酸盐top期刊《Ceramics International》发表最新研究成果
云师大物电学院朱挺和华中科大夏宝玉《Applied Catalysis B: Environmental》上发表研究成果
云师大朱挺教授在top期刊《ACS Sustainable Chem. Eng.》上合作发表最新研究成果
朱挺-云南师范大学物理与电子信息学院
https://blog.sciencenet.cn/blog-454141-1463351.html
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