Electrocatalytically Active Hollow Carbon Nanospheres Derived from PS-b-P4VP Micelles

doi:10.1002/ppsc.201700404

	Electrocatalytically Active Hollow Carbon Nanospheres Derived from PS-b-P4VP Micelles
	Cao, SB; Qu, T; Li, YY; Zhang, A; Xue, LF; Zhao, YB; Zheng, LR; Chen, AH; Shui, JL; Zheng LR(郑黎荣)
刊名	PARTICLE & PARTICLE SYSTEMS CHARACTERIZATION
	2018
卷号	35 期号:4 页码:1700404
关键词	block copolymer carbon hollow sphere N-doping oxygen reduction reaction PEM fuel cell
ISSN号	0934-0866
DOI	10.1002/ppsc.201700404
文献子类	Article
英文摘要	A facile method using polystyrene-b-poly(4-vinyl pyridine) (PS-b-P4VP) micelles is demonstrated to synthesize N/FeN4-doped hollow carbon nanospheres (N/FeN4-CHNS) with high electrocatalytic activity for oxygen reduction reactions (ORRs). Uniform spherical micelles with PS core and P4VP shell are prepared by exposing PS-b-P4VP in a mixture of ethanol/tetrahydrofuran. Pyridinic N in shell cooperates with Fe3+ to induce an in situ polymerization of pyrrole. Tuning molecular composition of PS-b-P4VP can form hollow carbon spheres with controlled size down to sub-100 nm that remains challenge using traditional hard template strategies. N/FeN4-CHNS possesses a series of desirable properties as electrode materials, including easy fabrication, high reproducibility, large surface area, and highly accessible porous surface. This electrocatalyst exhibits excellent ORR activity (onset potential of 0.976 V vs reversible hydrogen electrode (RHE) and half-wave potential of 0.852 V vs RHE), higher than that of commercial Pt/C (20 wt%) in an alkaline media, and shows a good activity in an acidic media as well. In addition to its higher stability and methanol tolerance than Pt/C in both alkaline and acidic electrolytes, highly competitive single cell performance is achieved in a proton exchange membrane fuel cell. This work provides a general approach to preparing functionalized small hollow nanospheres based on self-assembly of block copolymers.
电子版国际标准刊号	1521-4117
WOS关键词	OXYGEN-REDUCTION REACTION ; HIGH-PERFORMANCE ELECTROCATALYSTS ; ELECTROLYTE FUEL-CELLS ; EFFICIENT ELECTROCATALYSTS ; CATALYSTS ; NITROGEN ; IRON ; GRAPHENE ; POLYMER ; POLYANILINE
WOS研究方向	Chemistry ; Science & Technology - Other Topics ; Materials Science
语种	英语
WOS记录号	WOS:000430470700006
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/285852]
专题	高能物理研究所_多学科研究中心
作者单位	中国科学院高能物理研究所
推荐引用方式 GB/T 7714	Cao, SB,Qu, T,Li, YY,et al. Electrocatalytically Active Hollow Carbon Nanospheres Derived from PS-b-P4VP Micelles[J]. PARTICLE & PARTICLE SYSTEMS CHARACTERIZATION,2018,35(4):1700404.
APA	Cao, SB.,Qu, T.,Li, YY.,Zhang, A.,Xue, LF.,...&郑黎荣.(2018).Electrocatalytically Active Hollow Carbon Nanospheres Derived from PS-b-P4VP Micelles.PARTICLE & PARTICLE SYSTEMS CHARACTERIZATION,35(4),1700404.
MLA	Cao, SB,et al."Electrocatalytically Active Hollow Carbon Nanospheres Derived from PS-b-P4VP Micelles".PARTICLE & PARTICLE SYSTEMS CHARACTERIZATION 35.4(2018):1700404.