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

作者：

Ziliang Chen^1,2,#, Jie Wu^1,#, Zhengran Chen³, Hongyuan Yang², Kai Zou³, Xiangyong Zhao⁵, Ruihong Liang^3,*, Xianlin Dong³, Prashanth W. Menezes^2,4,*, and Zhenhui Kang^1,*

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 Universität Berlin, Straße 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