| High entropy alloy/C nanoparticles derived from polymetallic MOF as promising electrocatalysts for alkaline oxygen evolution reaction | |
| Wang, Shiqi1; Huo, Wenyi2; Fang, Feng1; Xie, Zonghan3; Shang, Jian Ku4; Jiang, Jianqing1,2 | |
| Corresponding Author | Huo, Wenyi(wyhuo@njfu.edu.cn) ; Fang, Feng(fangfeng@seu.edu.cn) |
| 2022-02-01 | |
| Source Publication | CHEMICAL ENGINEERING JOURNAL
 |
| ISSN | 1385-8947 |
| Volume | 429Pages:11 |
| Abstract | Recently, high entropy alloy (HEA) based materials have been vigorously explored as viable catalysts in water electrolysis for their unique properties. However, the synthesis of efficient and robust high entropy catalysts remains a challenge. Here a facile and scalable approach is reported to synthesize advanced HEA (CoNiCuMnAl)/ C nanoparticles from the polymetallic Metal-organic framework (MOF). The novel core-shell nanoarchitectures feature face-centered cubic HEA wrapped in ultra-thin carbon shell. The optimized catalyst (deposited upon Ni foam) boosted alkaline Oxygen evolution reaction (OER) (in 1.0 M KOH) with an ultralow overpotential of 215 mV at 10 mA/cm2 (also by a low Tafel slope of 35.6 mV dec 1). The enhanced performance is closely tied to surface reconstruction (i.e., formation of oxyhydroxide catalytic active species) and the high entropy effect, revealed by Fourier-transformed alternating current voltammetry (FTACV) and in-situ Raman spectrum analysis, in conjunction with Density Functional Theory (DFT) computations. Furthermore, the new design showed excellent long-term OER stability with negligible decay through 30 h testing (under 200 mA cm-2). The present work demonstrates the feasibility and advantage of utilizing highly efficient and durable high entropy alloys for catalyzing electrochemical water splitting process. |
| Keyword | High entropy alloy Catalysts Oxygen evolution reaction FTACV test In-situ Raman spectra DFT calculations |
| Funding Organization | National Natural Science Foundation of China ; Jiangsu Key Laboratory of Advanced Metallic Materials, Southeast University ; Australian Research Council Dis-covery Projects |
| DOI | 10.1016/j.cej.2021.132410 |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | National Natural Science Foundation of China[52171110] ; Jiangsu Key Laboratory of Advanced Metallic Materials, Southeast University[AMM2020A02] ; Australian Research Council Dis-covery Projects |
| WOS Research Area | Engineering |
| WOS Subject | Engineering, Environmental ; Engineering, Chemical |
| WOS ID | WOS:000728516800004 |
| Publisher | ELSEVIER SCIENCE SA |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/167278 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | Huo, Wenyi; Fang, Feng |
| Affiliation | 1.Southeast Univ, Jiangsu Key Lab Adv Metall Mat, Nanjing 211189, Peoples R China 2.Nanjing Forestry Univ, Coll Mech & Elect Engn, Nanjing 210037, Peoples R China 3.Univ Adelaide, Sch Mech Engn, Adelaide, SA 5005, Australia 4.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China |
| Recommended Citation GB/T 7714 | Wang, Shiqi,Huo, Wenyi,Fang, Feng,et al. High entropy alloy/C nanoparticles derived from polymetallic MOF as promising electrocatalysts for alkaline oxygen evolution reaction[J]. CHEMICAL ENGINEERING JOURNAL,2022,429:11. |
| APA | Wang, Shiqi,Huo, Wenyi,Fang, Feng,Xie, Zonghan,Shang, Jian Ku,&Jiang, Jianqing.(2022).High entropy alloy/C nanoparticles derived from polymetallic MOF as promising electrocatalysts for alkaline oxygen evolution reaction.CHEMICAL ENGINEERING JOURNAL,429,11. |
| MLA | Wang, Shiqi,et al."High entropy alloy/C nanoparticles derived from polymetallic MOF as promising electrocatalysts for alkaline oxygen evolution reaction".CHEMICAL ENGINEERING JOURNAL 429(2022):11. |
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