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journal article·2025-09Open access

Defective K 2 Ti 8 O 17 Nanorod Supports Enable Stable High‐Current‐Density Acidic Water Electrolysis via Confinement‐Engineered IrO x (Small 36/2025)

Jiaxi Sui, Hao Sun, Fengge Wang, Qiwen Zhang, Shilin Ling, Yali Li, Zhenghan Zhang, Jun Zhong, Xiaoxiao Huang, Bo Zhong, Xiaoyan Luo

Small· Volume 21· Issue 36
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Source abstract

Abstract

Water Electrolysis Featuring a minimal Ir content of 10.89%, this catalyst delivers a 4.4-fold higher mass activity than commercial IrO2. It empowers proton exchange membrane water electrolysis systems (0.3 mg cm−2 Ir loading) to operate stably at 3 A cm−2 (1.79 V) for >550 hours, dynamically adapts to renewable energy fluctuations, and achieves hydrogen production at $0.88 per kg H2. More in article number 2505131, Xiaoxiao Huang, Xiaoyan Luo, and co-workers.
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Research context

NanomaterialsCatalysis & surfaces

OpenAlex topics: Extraction and Separation Processes

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Affiliations

School of Materials Science and Engineering Harbin Institute of Technology Harbin 150006 China

Department of Energy and Environmental Materials Suzhou Laboratory Suzhou 215000 China

State Key Laboratory of Coordination Chemistry School of Chemistry and Chemical Engineering Nanjing University Nanjing 210023 China

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

School of Materials Science and Engineering Harbin Institute of Technology Weihai Weihai 264205 China

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