DataVXAdvanced MaterialsPaper
journal article·2022-08Open access

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

Jie Wu, Meilin Hou, Ziliang Chen, Weiju Hao, Xuelei Pan, Hongyuan Yang, Wanglai Cen, Yang Liu, Hui Huang, Prashanth W. Menezes, Zhenhui Kang

Advanced Materials· Volume 34· Issue 32
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Source abstract

Abstract

Abstract 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 gcat−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.
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Research context

NanomaterialsCatalysis & surfaces

OpenAlex topics: Electrocatalysts for Energy Conversion · Copper-based nanomaterials and applications · Advancements in Battery Materials

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

Affiliations

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

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

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

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

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

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

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

Funding

National Natural Science Foundation of China · Natural Science Foundation of Jiangsu Province

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