Pt nanoclusters anchored on ordered macroporous nitrogen-doped carbon for accelerated water dissociation toward superior alkaline hydrogen production
作者:
Li, J (Li, Jun) [1] ; Liu, JL (Liu, Jinlong) [2] ; Chen, C (Chen, Chen) [1] ; Guo, JN (Guo, Jiangnan) [2] ; Bi, R (Bi, Ran) [1] ; Chen, S (Chen, Sheng) [3] ; Zhang, L (Zhang, Lei) [1] ; Zhu, M (Zhu, Min) [4]
CHEMICAL ENGINEERING JOURNAL
卷436
文献号135186
DOI10.1016/j.cej.2022.135186
出版时间MAY 15 2022
已索引2022-04-17
文献类型Article
摘要
Developing effective electrocatalysts with reduced Pt content for fast hydrogen evolution reaction (HER) kinetics toward efficient and stable hydrogen production in alkaline media is highly desirable but rather challenging. Herein, Pt nanoclusters (~1.6 nm) uniformly anchored on ordered macroporous nitrogen-doped carbon support (Pt-30/NCM) with only 3.39 wt% Pt loading is rationally constructed via a polystyrene spheres (PS) template method followed by an impregnating method as a highly enhanced electrocatalyst for alkaline HER. Benefiting from the enhanced mass and charge transport via the ordered macroporous carbon structure as well as the strong metal-support interaction between Pt nanoclusters and nitrogen-doped carbon framework, Pt-30/NCM exhibits superior intrinsic activity and operation stability compared to the solid counterpart without ordered macropores (Pt-30/NCS), even affording a more than 10 times higher mass activity and much better operation stability after 3000 cycles than those of commercial 20 wt% Pt/C. The density functional theory (DFT) calculations reveal that the strong coupling between Pt nanoclusters and nitrogen-doped carbon support can induce favorable charge transfer for accelerated water dissociation as well as desirable d-band center position for suitable adsorption and desorption of alkaline HER intermediates, thus contributing to remarkably improved kinetics of hydrogen production.
关键词
作者关键词Alkaline hydrogen evolution reactionAccelerated water dissociationPt nanoclusterNitrogen-doped carbonOrdered macroporous structure
Keywords PlusINITIO MOLECULAR-DYNAMICSOXYGEN REDUCTIONELECTROCATALYSTSGRAPHENEPERFORMANCENANOPARTICLESLIQUIDCONSTRUCTIONTRANSITIONINTERFACE
作者信息
通讯作者地址
Zhang, Lei
(通讯作者)
South China Univ Technol, Sch Chem & Chem Engn, Guangdong Prov Key Lab Adv Energy Storage Mat, Guangzhou 510640, Peoples R China
通讯作者地址
Liu, Jinlong
(通讯作者)
Cent South Univ, Coll Chem & Chem Engn, Changsha 410083, Peoples R China
地址
1 South China Univ Technol, Sch Chem & Chem Engn, Guangdong Prov Key Lab Adv Energy Storage Mat, Guangzhou 510640, Peoples R China
2 Cent South Univ, Coll Chem & Chem Engn, Changsha 410083, Peoples R China
3 Nanjing Univ Sci & Technol, Sch Chem & Chem Engn, Key Lab Soft Chem & Funct Mat, Minist Educ, Nanjing 210094, Peoples R China
4 South China Univ Technol, Sch Mat Sci & Engn, Guangdong Prov Key Lab Adv Energy Storage Mat, Guangzhou 510640, Peoples R China
电子邮件地址liujinlong@csu.edu.cnceleizhang@scut.edu.cn
类别/分类
研究方向Engineering