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Encapsulation of NiCo nanoparticles into foam-like porous N,P-codoped carbon nanosheets: Electronic and architectural dual regulations toward high-efficiency water electrolysis

文献类型：期刊论文

作者Li, Tongfei2,3; Luo, Gan6; Liu, Qianyu3; Li, Sulin3; Zhang, Yiwei2; Xu, Lin3; Tang, Yawen3; Yang, Jun1,4; Pang, Huan5
刊名CHEMICAL ENGINEERING JOURNAL
出版日期2021-04-15
卷号410页码:8
关键词NiCo alloy Bifunctional electrocatalysts Overall water splitting Porous carbon nanosheets Hybrid electrocatalyst
ISSN号1385-8947
DOI10.1016/j.cej.2020.128325
英文摘要The rational design of earth-abundant and high-efficiency bifunctional electrocatalysts for expediting the sluggish kinetics of both hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) is imperative to fulfill the sustainable hydrogen-based energy electrochemical devices. The design rationale for advanced catalyst requires to simultaneously take into account both thermodynamic and kinetic aspects. Herein, a feasible and scalable hydrogel-bridged pyrolysis strategy is developed to directly immobilize uniform NiCo nanoparticles into 2D foam-like porous N,P-codoped carbon nanosheets (abbreviated as NiCo@N,P-CNSs hereafter). The bimetallic alloy synergy, well confined active sites and highly porous nanosheet architecture collaboratively afford modulated electronic structure, abundant active sites, and multidimensional mass diffusion pathways, which are thermodynamically and kinetically favorable for catalytic performance. Consequently, the as-fabricated NiCo@N,P-CNSs exhibit distinguished bifunctional performance in alkaline medium, requiring overpotentials of only 99 and 226 mV at a current density of 10 mA cm(-2) for HER and OER, respectively. Furthermore, when equipped in a two-electrode electrolyzer, the NiCo@N,P-CNS electrode couple displays a low cell voltage of 1.57 V at 10 mA cm(-2) and outstanding stability, outperforming a majority of the recently reported non-precious electrocatalysts and representing a competitive candidate for practical water electrolysis. Density functional theory (DFT) simulations further corroborate that the bimetallic NiCo alloy possesses favorable Gibbs free energies of water and hydrogen adsorption, which are beneficial for enhancing its intrinsic activity. More importantly, the developed methodology for the simultaneous realization of electronic modulation, nanostructure engineering and nanocarbon hybridization may provide new perspectives for future exploration of high-efficiency electrocatalysts for a range of energy conversion applications and beyond.
WOS关键词OXYGEN REDUCTION REACTION ; N-DOPED CARBON ; BIFUNCTIONAL ELECTROCATALYST ; EVOLUTION ; CATALYST ; HYBRIDS ; ARRAY
资助项目National Natural Science Foundation of China[21972068] ; National Natural Science Foundation of China[21875112] ; National Natural Science Foundation of China[21878047] ; National Natural Science Foundation of China[21676056] ; National Natural Science Foundation of China[51673040] ; Six Talents Pinnacle Program of Jiangsu Province of China[JNHB-006] ; Qing Lan Project of Jiangsu Province[1107040167] ; Postgraduate Research & Practice Innovation Program of Jiangsu Province[KYCX20_0121] ; Fundamental Research Funds for the Central Universities[2242020k1G001] ; Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD)[1107047002] ; State Key Laboratory of Multiphase Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences[MPCS-2019-A-09]
WOS研究方向Engineering
语种英语
WOS记录号WOS:000705560800004
出版者ELSEVIER SCIENCE SA
资助机构National Natural Science Foundation of China ; Six Talents Pinnacle Program of Jiangsu Province of China ; Qing Lan Project of Jiangsu Province ; Postgraduate Research & Practice Innovation Program of Jiangsu Province ; Fundamental Research Funds for the Central Universities ; Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD) ; State Key Laboratory of Multiphase Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences
源URL[http://ir.ipe.ac.cn/handle/122111/50497]  
专题中国科学院过程工程研究所
通讯作者Zhang, Yiwei; Xu, Lin; 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.Southeast Univ, Sch Chem & Chem Engn, Jiangsu Optoelect Funct Mat & Engn Lab, Nanjing 211189, Peoples R China
3.Nanjing Normal Univ, Sch Chem & Mat Sci, Jiangsu Key Lab New Power Batteries, Nanjing 210023, Peoples R China
4.Chinese Acad Sci, Inst Proc Engn, Ctr Mesosci, Beijing 100190, Peoples R China
5.Yangzhou Univ, Sch Chem & Chem Engn, Yangzhou 225009, Jiangsu, Peoples R China
6.Shangqiu Normal Univ, Coll Chem & Chem Engn, Henan Engn Ctr New Energy Battery Mat, Henan D&A Engn Ctr Adv Battery Mat, Shangqiu 476000, Peoples R China
推荐引用方式
GB/T 7714		 Li, Tongfei,Luo, Gan,Liu, Qianyu,et al. Encapsulation of NiCo nanoparticles into foam-like porous N,P-codoped carbon nanosheets: Electronic and architectural dual regulations toward high-efficiency water electrolysis[J]. CHEMICAL ENGINEERING JOURNAL,2021,410:8.
APA Li, Tongfei.,Luo, Gan.,Liu, Qianyu.,Li, Sulin.,Zhang, Yiwei.,...&Pang, Huan.(2021).Encapsulation of NiCo nanoparticles into foam-like porous N,P-codoped carbon nanosheets: Electronic and architectural dual regulations toward high-efficiency water electrolysis.CHEMICAL ENGINEERING JOURNAL,410,8.
MLA Li, Tongfei,et al."Encapsulation of NiCo nanoparticles into foam-like porous N,P-codoped carbon nanosheets: Electronic and architectural dual regulations toward high-efficiency water electrolysis".CHEMICAL ENGINEERING JOURNAL 410(2021):8.

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来源：过程工程研究所

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