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康振辉教授、陈子亮副教授及其合作者在Angew. Chem. Int. Edit.上发表论文
发布时间:2022-09-15 点击:10

题目:

Entropy Enhanced Perovskite Oxide Ceramic for Efficient Electrochemical Reduction of Oxygen to Hydrogen Peroxide

作者:

Ziliang Chen1,2,#, Jie Wu1,#, Zhengran Chen3, Hongyuan Yang2, Kai Zou3, Xiangyong Zhao5, Ruihong Liang3,*, Xianlin Dong3, Prashanth W. Menezes2,4,*, and Zhenhui Kang1,*

单位:

1Institute of Functional Nano and Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-based Functional Materials and Devices, Joint International Research Laboratory of Carbon-Based Functional Materials and Devices, Soochow University, Suzhou 215123 (China)

2Department of Chemistry: Metalorganics and Inorganic Materials, Technische Universit?t Berlin, Stra?e des 17 Juni 135, Sekr. C2, 10623 Berlin (Germany)

3Key Laboratory of Inorganic Functional Materials and Devices, Shanghai Institute of Ceramics, Chinese Academy of Sciences, 588 Heshuo Road, Jiading District, Shanghai 201800 (China)

4Material Chemistry Group for Thin Film Catalysis—CatLab, Helmholtz-Zentrum Berlin für Materialien und Energie, Albert-Einstein-Str. 15, 12489 Berlin (Germany)

5Key Laboratory of Optoelectronic Material and Device, Department of Physics, Shanghai Normal University, Shanghai 200234 (China)

摘要:

The electrochemical oxygen reduction reaction (ORR) offers a most promising and efficient route to produce hydrogen peroxide (H2O2), yet the lack of cost-effective and high-performance electrocatalysts have restricted its practical application. Herein, an entropy-enhancement strategy has been employed to enable the low-cost perovskite oxide to effectively catalyze the electrosynthesis of H2O2. The optimized Pb-(NiWMnNbZrTi)1/6O3 ceramic is available on a kilogram-scale and displays commendable ORR activity in alkaline media with high selectivity over 91% across the wide potential range for H2O2 including an outstanding degradation property for organic dyes through the Fenton process. The exceptional performance of this perovskite oxide is attributed to the entropy stabilization-induced polymorphic transformation assuring the robust structural stability, decreased charge mobility as well as synergistic catalytic effects which we confirm using advanced in situ Raman, transient photovoltage, Rietveld refinement as well as finite elemental analysis.

影响因子:

15.336

分区情况:

一区

链接:

https://onlinelibrary.wiley.com/doi/10.1002/anie.202200086


责任编辑:郭佳



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