Fabrication of Ti/SnOx/MnO2 anodes with enhanced catalytic performance for oxygen evolution reactions

IF 4.7 1区材料科学 Q1 METALLURGY & METALLURGICAL ENGINEERING

Transactions of Nonferrous Metals Society of China Pub Date : 2025-03-01 DOI:10.1016/S1003-6326(24)66723-3

Ya CHEN, Yuan-he JIANG, Peng-hui PING, Jiu-qing LIU, Xi-chang SHI

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Abstract

This work is devoted to the development of a low cost dimensionally stable anode with high oxygen evolution catalytic activity for practical applications. For this purpose, a Ti/SnO_x/MnO₂ anode was fabricated through an innovative strategy involving Sn electrodeposition, oxidation, and MnO₂-layer preparation. The structure of the anode was characterized, and the oxygen evolution performance was evaluated in a H₂SO₄ solution. The results show that compared with the Ti/SnO₂/MnO₂ anode prepared by the conventional brushing−annealing process, the Ti/SnO_x/MnO₂ anode fabricated through the innovative procedure exhibits a lower oxygen evolution potential and a nearly 40% longer accelerated lifespan. The superior oxygen evolution performance of the Ti/SnO_x/MnO₂ anode is attributed to the distinctive SnO_x intermediate layer fabricated through Sn electrodeposition followed by oxidation, which indicates the great potential of the anode as a dimensionally stable anode for metal electrowinning and hydrogen production by electrolysis, etc.

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Ti/SnOx/MnO2阳极的制备及其在析氧反应中的催化性能

本工作致力于开发一种具有高析氧催化活性的低成本、尺寸稳定的阳极用于实际应用。为此，通过一种创新的策略，包括锡电沉积、氧化和MnO2层的制备，制备了Ti/SnOx/MnO2阳极。对阳极的结构进行了表征，并在H2SO4溶液中评价了阳极的析氧性能。结果表明，与传统刷镀退火法制备的Ti/SnO2/MnO2阳极相比，该工艺制备的Ti/SnOx/MnO2阳极的析氧势较低，加速寿命延长近40%。Ti/SnOx/MnO2阳极具有优异的析氧性能，这主要归功于其独特的SnOx中间层，这表明该阳极在金属电积和电解制氢等方面具有很大的潜力。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Transactions of Nonferrous Metals Society of China 工程技术-冶金工程

CiteScore

7.40

自引率

17.80%

发文量

8456

审稿时长

3.6 months

期刊介绍： The Transactions of Nonferrous Metals Society of China (Trans. Nonferrous Met. Soc. China), founded in 1991 and sponsored by The Nonferrous Metals Society of China, is published monthly now and mainly contains reports of original research which reflect the new progresses in the field of nonferrous metals science and technology, including mineral processing, extraction metallurgy, metallic materials and heat treatments, metal working, physical metallurgy, powder metallurgy, with the emphasis on fundamental science. It is the unique preeminent publication in English for scientists, engineers, under/post-graduates on the field of nonferrous metals industry. This journal is covered by many famous abstract/index systems and databases such as SCI Expanded, Ei Compendex Plus, INSPEC, CA, METADEX, AJ and JICST.