康振辉教授课题组及其合作者在Adv. Mater.上发表论文

Composition Engineering of Amorphous Nickel Boride Nanoarchitectures Enabling Highly Efficient Electrosynthesis of Hydrogen Peroxide

作者：

Jie Wu^1,#, Meilin Hou^2,#, Ziliang Chen^1,3,*, Weiju Hao⁴, Xuelei Pan⁵, Hongyuan Yang³, Wanglai Cen^5,6, Yang Liu^1,*, Hui Huang¹, Prashanth W. Menezes^3,7,*, and Zhenhui Kang^1,*

单位：

¹Institute of Functional Nano and Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials and Devices, Soochow University, Suzhou 215123, P. R. China

²College of Engineering, Hebei Normal University, Shijiazhuang 050024, P. R. China

³Department of Chemistry: Metalorganics and Inorganic Materials, Technische Universität Berlin, Straße des 17 Juni 135, Sekr. C2, 10623 Berlin, Germany

⁴State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan, 430070 P. R. China

⁵Institute of New Energy and Low Carbon Technology, Sichuan University, Chengdu, 610065 P. R. China

⁶College of Science, University of Shanghai for Science and Technology, Shanghai, 200093 P. R. China

⁷Material Chemistry Group for Thin Film Catalysis–CatLab, Helmholtz-Zentrum Berlin für Materialien und Energie, Albert-Einstein-Str. 15, 12489 Berlin, Germany

摘要：

Developing advanced electrocatalysts with exceptional two electron (2e⁻) selectivity, activity, and stability is crucial for driving the oxygen reduction reaction (ORR) to produce hydrogen peroxide (H₂O₂). Herein, a composition engineering strategy is proposed to flexibly regulate the intrinsic activity of amorphous nickel boride nanoarchitectures for efficient 2e⁻ ORR by oriented reduction of Ni²⁺ with different amounts of BH₄⁻. Among borides,the amorphous NiB₂ delivers the 2e⁻ selectivity close to 99% at 0.4 V and over 93% in a wide potential range, together with a negligible activity decay under prolonged time. Notably, an ultrahigh H₂O₂ production rate of 4.753 mol g_cat⁻¹ h⁻¹ is achieved upon assembling NiB₂ in the practical gas diffusion electrode. The combination of X-ray absorption and in situ Raman spectroscopy, as well as transient photovoltage measurements with density functional theory, unequivocally reveal that the atomic ratio between Ni and B induces the local electronic structure diversity, allowing optimization of the adsorption energy of Ni toward *OOH and reducing of the interfacial charge transfer kinetics to preserve the O−O bond.

影响因子：

30.849

分区情况：

一区

链接：

https://onlinelibrary.wiley.com/doi/10.1002/adma.202202995