Synergistic Engineering of Dopant and Support of Ru Oxide Catalyst Enables Ultrahigh Performance for Acidic Oxygen Evolution

被引：26

作者：

Boakye, Felix Ofori ^{[1
,2
]}

Harrath, Karim ^{[3
]}

Zhang, Dantong ^{[4
,5
]}

You, Ya ^{[6
]}

Zhang, Wenbin ^{[1
]}

Wang, Zheng ^{[1
]}

Zhang, Haining ^{[6
]}

Zhu, Jiexin ^{[6
]}

Long, Juncai ^{[6
]}

Zhu, Jianqiu ^{[7
]}

Yasin, Ghulam ^{[1
,2
]}

Owusu, Kwadwo Asare ^{[6
]}

Tabish, Mohammad ^{[8
]}

Zhang, Linjuan ^{[7
]}

Wang, Dingsheng ^{[9
]}

Shi, Xiaofeng ^{[10
]}

Jiang, Zhongyi ^{[11
]}

Wu, Bin ^{[12
,13
]}

Mai, Liqiang ^{[6
]}

Zhao, Wei ^{[1
]}

机构：

[1] Shenzhen Univ, Inst Adv Study, Shenzhen 518060, Peoples R China

[2] Shenzhen Univ, Coll Phys & Optoelect Engn, Shenzhen 518060, Peoples R China

[3] Chinese Acad Sci, Ganjiang Innovat Acad, Fundamental Sci Ctr Rare Earths, Ganzhou 341000, Peoples R China

[4] Qiqihar Univ, Coll Chem & Chem Engn, Qiqihar 161006, Peoples R China

[5] Chinese Acad Sci, Shenzhen 518055, Peoples R China

[6] Wuhan Univ Technol, Sch Mat Sci & Engn, State Key Lab Adv Technol Mat Synth & Proc, Luoshi Rd 122, Wuhan 430070, Peoples R China

[7] Chinese Acad Sci, Shanghai Inst Appl Phys, Key Lab Interfacial Phys & Technol, Shanghai 201800, Peoples R China

[8] Beijing Univ Chem Technol, Coll Mat Sci & Engn, Beijing 100029, Peoples R China

[9] Tsinghua Univ, Dept Chem, Beijing 100084, Peoples R China

[10] North Univ China, Sch Environm & Safety Engn, Taiyuan 030051, Peoples R China

[11] Tianjin Univ, Sch Chem Engn & Technol, Key Lab Green Chem Technol, Minist Educ, Tianjin 300072, Peoples R China

[12] Helmholtz Zentrum Berlin Materialien & Energie Gmb, Albert Einstein Str 15, D-12489 Berlin, Germany

[13] Nanyang Technol Univ, Sch Mat Sci & Engn, 50 Nanyang Ave, Singapore 639798, Singapore

来源：

ADVANCED FUNCTIONAL MATERIALS | 2024年 / 34卷 / 48期

基金：

中国国家自然科学基金;

关键词：

acidic oxygen evolution; catalyst support; Ce-doping; stability; superior activity; RUTHENIUM OXIDE; WATER;

D O I：

10.1002/adfm.202408714

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Active and robust electrocatalysts for acidic oxygen evolution reaction (OER) are of crucial importance for efficient proton exchange membrane water electrolyzer (PEM-WE). Ruthenium (Ru) oxide has attracted considerable attention due to its high activity. However, the unsatisfying stability of Ru oxide in acidic OER environments hinders the application. Here, Ce-doped RuO2 nanoparticles are designed and supported on Co & horbar;N & horbar;C material (Ce@RuO2/CoNC) for acidic OER. It is demonstrated that Ce@RuO2/CoNC delivers a super low overpotential of 150 mV and an excellent stability of 1000 h at 10 mA cm-2, outperforming most previously reported Ru-based catalysts. The mass activity is estimated as 2365.5 AgRu-1 at 1.5 V (vs RHE), representing approximate to 2x advance compared to the best prior study. Furthermore, applied in a single-cell PEM-WE device, it can steadily operate for 1000 h at 200 mA cm-2. The studies show that Ce-doping and Co & horbar;N & horbar;C support synergistically enhance the activity and stability of Ru oxide by optimizing the free energies of OER intermediates and suppressing the dissolution of Ru. The utilization of Ce@RuO2 nanoparticles is anchored on a durable cobalt nitrogen carbon (CoNC) catalyst support exhibits remarkable performance and stability in acidic oxygen evolution reaction (OER). Theoretical calculations indicate that the leaching of Ce atoms from the catalyst surface into the solvent medium requires high energy, demonstrating the stability of the Ce@RuO2/CoNC catalyst. image

引用

页数：12

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