CAS OpenIR
Encapsulation of NiCo nanoparticles into foam-like porous N,P-codoped carbon nanosheets: Electronic and architectural dual regulations toward high-efficiency water electrolysis
Li, Tongfei1,2; Luo, Gan6; Liu, Qianyu2; Li, Sulin2; Zhang, Yiwei1; Xu, Lin2; Tang, Yawen2; Yang, Jun3,4; Pang, Huan5
2021-04-15
Source PublicationCHEMICAL ENGINEERING JOURNAL
ISSN1385-8947
Volume410Pages:8
AbstractThe 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.
KeywordNiCo alloy Bifunctional electrocatalysts Overall water splitting Porous carbon nanosheets Hybrid electrocatalyst
DOI10.1016/j.cej.2020.128325
Language英语
WOS KeywordOXYGEN REDUCTION REACTION ; N-DOPED CARBON ; BIFUNCTIONAL ELECTROCATALYST ; EVOLUTION ; CATALYST ; HYBRIDS ; ARRAY
Funding ProjectNational 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 Research AreaEngineering
WOS SubjectEngineering, Environmental ; Engineering, Chemical
Funding OrganizationNational 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
WOS IDWOS:000705560800004
PublisherELSEVIER SCIENCE SA
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/50498
Collection中国科学院过程工程研究所
Corresponding AuthorZhang, Yiwei; Xu, Lin; Yang, Jun
Affiliation1.Southeast Univ, Sch Chem & Chem Engn, Jiangsu Optoelect Funct Mat & Engn Lab, Nanjing 211189, Peoples R China
2.Nanjing Normal Univ, Sch Chem & Mat Sci, Jiangsu Key Lab New Power Batteries, Nanjing 210023, Peoples R China
3.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100190, 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
Recommended Citation
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.
Files in This Item:
There are no files associated with this item.
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Li, Tongfei]'s Articles
[Luo, Gan]'s Articles
[Liu, Qianyu]'s Articles
Baidu academic
Similar articles in Baidu academic
[Li, Tongfei]'s Articles
[Luo, Gan]'s Articles
[Liu, Qianyu]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Li, Tongfei]'s Articles
[Luo, Gan]'s Articles
[Liu, Qianyu]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.