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journal article·2024-04

Nb2AlC MAX Nanosheets Supported Ru Nanocrystals as Efficient Catalysts for Boosting pH‐Universal Hydrogen Production

Zhensui Lu, Hui Yang, Qian Liu, Jun Luo, Ligang Feng, Liang Chu, Xijun Liu

Small· Volume 20· Issue 17
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Source abstract

Abstract

Abstract MAX phase combines both ceramic and metallic properties, which exhibits widespread application prospects. 2D MAX nanosheets have more abundant surface‐active sites, being anticipated to improve the performance of surface‐related applications. Herein, for the first time, 2D Nb2AlC nanosheets (NSs) as novel supports anchored with Ru catalysts for overall water splitting are developed. The optimized catalyst of Ru@Nb2AlC NSs exhibit Pt‐comparable kinetics and superior catalytic activity toward hydrogen evolution reaction (HER) (low overpotentials of 61 and 169 mV at 10 and 100 mA cm−2, respectively) with excellent durability (5000 cycles or 80 h) in alkaline media. In particular, Ru@Nb2AlC NSs achieve a mass activity of ≈4.8 times larger than the commercial Pt/C (20 wt.%) catalyst. The post‐oxidation resultant catalyst of RuO2@Nb2AlC NSs also exhibit boosting HER and oxygen evolution reaction activities and ≈100% Faraday efficiency for overall water splitting with a cell voltage of 1.61 V to achieve 10 mA cm−2. Therefore, the novel category of 2D MAX supports anchored with Ru nanocrystals offers a novel strategy for designing a wide range of MAX‐supported metal catalysts for the renewable energy field.
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Research context

Ceramics & glassesNanomaterialsCatalysis & surfaces

OpenAlex topics: MXene and MAX Phase Materials · Advanced Photocatalysis Techniques · Advanced Memory and Neural Computing

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

Affiliations

Key Laboratory of Display Materials and Photoelectric Devices (Ministry of Education) Tianjin Key Laboratory for optoelectronic Materials and Devices School of Materials Science and Engineering Tianjin University of Technology Tianjin 300384 China

Institute for Advanced Study Chengdu University Chengdu Sichuan 610106 China

ShenSi Lab Shenzhen Institute for Advanced Study University of Electronic Science and Technology of China Longhua District Shenzhen 518110 China

School of Chemistry and Chemical Engineering Yangzhou University Yangzhou 225002 China

Institute of Carbon Neutrality and New Energy School of Electronics and Information Hangzhou Dianzi University Hangzhou 310018 China

State Key Laboratory of Featured Metal Materials and Life‐cycle Safety for Composite Structures Guangxi Key Laboratory of Processing for Non‐ferrous Metals and Featured Materials MOE Key Laboratory of New Processing Technology for Nonferrous Metals and Materials School of Resources Environment and Materials Guangxi University Nanning Guangxi 530004 China

Funding

National Natural Science Foundation of China

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