DataVXAdvanced Functional MaterialsPaper
journal article·2024-12

Unveiling the Role of Boron on Nickel‐Based Catalyst for Efficient Urea Oxidation Assisted Hydrogen Production

Yitao Hu, Li Shao, Zhiqi Jiang, Lei Shi, Qiuju Li, Kaiqian Shu, Hui Chen, Guodong Li, Yan Dong, Tongzhou Wang, Jihong Li, Lifang Jiao, Yida Deng

Advanced Functional Materials· Volume 34· Issue 52
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Source abstract

Abstract

Abstract Urea oxidation reaction (UOR) is an ideal alternative to oxygen evolution reaction (OER) for efficient hydrogen production but is immensely plagued by slow kinetics. Herein, a multilayer hole amorphous boron‐nickel catalyst (a‐NiBx) is fabricated through a simple chemical plating method, which displays intriguing catalytic activity toward UOR, demanding a low working potential of 1.4 V to reach 100 mA cm−2. The high performance is credited to the formation of metaborate (BO2−), which can promote the formation of high‐oxidation‐state NiOOH active phase and optimize the adsorption of urea molecules. This can be confirmed by the operando spectroscopy characteristics and density functional theory calculations. Consequently, the assembled electrolyzer utilizing NiBx as bifunctional catalysts exhibited splendid catalytic activity, requiring an evidently lower voltage of 1.66 V to reach a current density of 100 mA cm−2 and 1.57 V when using Pt/C as a cathode catalyst. Moreover, the assembled electrolyzer secured a robust stability of over 200 h, as well as a four times higher hydrogen production rate than traditional water electrolysis.
Source: crossref · Quality: baseline

Research context

Energy storageCatalysis & surfaces

OpenAlex topics: Electrocatalysts for Energy Conversion · Hydrogen Storage and Materials · Catalytic Processes in Materials Science

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

Affiliations

State Key Laboratory of Marine Resource Utilization in South China Sea School of Materials Science and Engineering Hainan University Haikou 570228 P. R. China

State Key Laboratory of Inorganic Synthesis and Preparative Chemistry College of Chemistry Jilin University Changchun 130012 P. R. China

Department of Chemistry College of Basic Medicine Third Military Medical University (Army Medical University) Chongqing 400038 P. R. China

State Key Laboratory of Environment‐Friendly Energy Materials School of Materials Science and Engineering Southwest University of Science and Technology Mianyang 621010 P. R. China

Key Laboratory of Pico Electron Microscopy of Hainan Province Hainan University Haikou 570228 China

Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education) Nankai University Tianjin 300071 P. R. China

Funding

National Natural Science Foundation of China · International Science and Technology Cooperation Program of Jiangsu Province · Natural Science Foundation of Hainan Province · Education Department of Hainan Province · Hainan University

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