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Introducing High-Valence Iridium Single Atoms into Bimetal Phosphides toward High-Efficiency Oxygen Evolution and Overall Water Splitting

文献类型：期刊论文

作者Yang, Niuwa1,2; Tian, Shaonan1; Feng, Yongjun3; Hu, Zhenya1,2; Liu, Hui1; Tian, Xinlong4; Xu, Lin5; Hu, Chaoquan1,6; Yang, Jun1,2,6
刊名SMALL
出版日期2023-01-06
页码10
ISSN号1613-6810
关键词bimetal phosphide electrocatalysts overall water splitting oxygen evolution reaction single atoms
DOI10.1002/smll.202207253
英文摘要Single atoms are superior electrocatalysts having high atomic utilization and amazing activity for water oxidation and splitting. Herein, this work reports a thermal reduction method to introduce high-valence iridium (Ir) single atoms into bimetal phosphide (FeNiP) nanoparticles toward high-efficiency oxygen evolution reaction (OER) and overall water splitting. The presence of high-valence single Ir atoms (Ir4+) and their synergistic interaction with Ni3+ species as well as the disproportionation of Ni3+ assisted by Fe collectively contribute to the exceptional OER performance. In specific, at appropriate Ir/Ni and Fe/Ni ratios, the as-prepared Ir-doped FeNiP (Ir-25-Fe16Ni100P64) nanoparticles at a mass loading of only 35 mu g cm(-2) show the overpotential as low as 232 mV at 10 mA cm(-2) and activity as high as 1.86 A mg(-1) at 1.5 V versus RHE for OER in 1.0 m KOH. Computational simulations confirm the vital role of high-valence Ir to weaken the adsorption of OER intermediates, favorable for accelerating OER kinetics. Impressively, a Pt/C||Ir-25-Fe16Ni100P64 two-electrode alkaline electrolyzer affords a current density of 10 mA cm(-2) at a low cell voltage of 1.42 V, along with satisfied stability. An AA battery with a nominal voltage of 1.5 V can drive overall water splitting with obvious bubbles released.
WOS关键词METAL PHOSPHIDE ; ELECTROCATALYSTS ; OXIDATION ; CATALYSTS ; ALKALINE ; FENIP
资助项目National Natural Science Foundation of China[22075290] ; National Natural Science Foundation of China[21972068] ; National Natural Science Foundation of China[52164028] ; Beijing Natural Science Foundation[Z200012] ; State Key Laboratory of Multiphase Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences[MPCS-2021-A-05] ; Programs for Foreign Talent[G2021106012L] ; Nanjing IPE Institute of Green Manufacturing Industry[E0010725]
WOS研究方向Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics
语种英语
出版者WILEY-V C H VERLAG GMBH
WOS记录号WOS:000908287600001
资助机构National Natural Science Foundation of China ; Beijing Natural Science Foundation ; State Key Laboratory of Multiphase Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences ; Programs for Foreign Talent ; Nanjing IPE Institute of Green Manufacturing Industry
源URL[http://ir.ipe.ac.cn/handle/122111/56467]  
专题中国科学院过程工程研究所
通讯作者Liu, Hui; Tian, Xinlong; Yang, Jun
作者单位1.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China
2.Univ Chinese Acad Sci, Ctr Mat Sci & Optoelect Engn, Beijing 100049, Peoples R China
3.Beijing Univ Chem Technol, Coll Chem, Beijing Engn Ctr Hierarch Catalysts, State Key Lab Chem Resource Engn, 15 Beisanhuan East Rd, Beijing 100029, Peoples R China
4.Hainan Univ, Sch Chem Engn & Technol, State Key Lab Marine Resource Utilizat South China, Hainan Prov Key Lab Fine Chem, Haikou 570228, Peoples R China
5.Nanjing Normal Univ, Jiangsu Collaborat Innovat Ctr Biomed Funct Mat, Sch Chem & Mat Sci, Jiangsu Key Lab New Power Batteries, R China, Nanjing, Peoples R China
6.Nanjing IPE Inst Green Mfg Ind, Nanjing 211100, Jiangsu, Peoples R China
推荐引用方式
GB/T 7714		 Yang, Niuwa,Tian, Shaonan,Feng, Yongjun,et al. Introducing High-Valence Iridium Single Atoms into Bimetal Phosphides toward High-Efficiency Oxygen Evolution and Overall Water Splitting[J]. SMALL,2023:10.
APA Yang, Niuwa.,Tian, Shaonan.,Feng, Yongjun.,Hu, Zhenya.,Liu, Hui.,...&Yang, Jun.(2023).Introducing High-Valence Iridium Single Atoms into Bimetal Phosphides toward High-Efficiency Oxygen Evolution and Overall Water Splitting.SMALL,10.
MLA Yang, Niuwa,et al."Introducing High-Valence Iridium Single Atoms into Bimetal Phosphides toward High-Efficiency Oxygen Evolution and Overall Water Splitting".SMALL (2023):10.

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来源：过程工程研究所

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