Biomolecule-derived N/S co-doped CNT-graphene hybrids exhibiting excellent electrochemical activities

doi:10.1016/j.jpowsour.2018.12.047

IMR OpenIR

	Biomolecule-derived N/S co-doped CNT-graphene hybrids exhibiting excellent electrochemical activities
	Huang, Baobing 1; Hu, Xiang 1; Liu, Yuchuan 1; Qi, Wei 2; Xie, Zailai 1
通讯作者	Qi, Wei(wqi@imr.ac.cn) ; Xie, Zailai(zlxie@fzu.edu.cn)
	2019-02-15
发表期刊	JOURNAL OF POWER SOURCES
ISSN	0378-7753
卷号	413 页码:408-417
摘要	Effective integration of CNTs and heteroatom-doped graphene can produce a new functional carbons that combines the extraordinary properties of heteroatom-doped graphene (e.g., catalytic activity, and huge exposed field) with those of CNTs (e.g., mechanical stability, and high electronic conductivity). Herein, we report a straightforward method to manufacture a metal-free, hierarchically porous and N/S co-doped CNT-graphene 3D framework via one-step pyrolysis of the guanine-sulfate and OCNTs. The usage of guanine-sulfate as carbon precursor can yield very regular (2D nanosheet) and in situ nitrogen-doped carbons. By combining with OCNTs, the as-obtained graphene is found to strongly couple with the surface of CNTs, achieving the uniform distribution of both components. Such 3D hybrid shows high activity toward a set of important electrochemical reactions and high-performance in Zn-air batteries. Systematic electrochemical studies indicate the indispensability of both the optimal nitrogen configuration and well-developed porosity for excellent ORR/OER/HER performance. The amount of pyridinic-N and graphitic-N, rather than the total nitrogen content, has a more positive effect on ORR activity, particularly for the onset potential; while the favorable pore size distributions might guarantee a much well-developed diffusion-limited current region and considerable diffusion-limited current value. These results undoubtedly could provide meaningful guidance to develop highly efficient electrocatalysts.
关键词	CNT-Graphene hybrids Effective integration 3D framework Guanine-sulfate Electrocatalysts
资助者	National Natural Science Foundation of China ; Minjiang scholar professorship Project
DOI	10.1016/j.jpowsour.2018.12.047
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[21571045] ; National Natural Science Foundation of China[21761132010] ; National Natural Science Foundation of China[91645114] ; National Natural Science Foundation of China[2157326] ; Minjiang scholar professorship Project
WOS研究方向	Chemistry ; Electrochemistry ; Energy & Fuels ; Materials Science
WOS类目	Chemistry, Physical ; Electrochemistry ; Energy & Fuels ; Materials Science, Multidisciplinary
WOS记录号	WOS:000457512700047
出版者	ELSEVIER SCIENCE BV
引用统计	被引频次：81[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/131652
专题	中国科学院金属研究所
通讯作者	Qi, Wei; Xie, Zailai
作者单位	1.Fuzhou Univ, Coll Chem, State Key Lab Photocatalysis Energy & Environm, Fuzhou 350116, Fujian, Peoples R China 2.Chinese Acad Sci, Inst Met Res, 72 Wenhua Rd, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Huang, Baobing,Hu, Xiang,Liu, Yuchuan,et al. Biomolecule-derived N/S co-doped CNT-graphene hybrids exhibiting excellent electrochemical activities[J]. JOURNAL OF POWER SOURCES,2019,413:408-417.
APA	Huang, Baobing,Hu, Xiang,Liu, Yuchuan,Qi, Wei,&Xie, Zailai.(2019).Biomolecule-derived N/S co-doped CNT-graphene hybrids exhibiting excellent electrochemical activities.JOURNAL OF POWER SOURCES,413,408-417.
MLA	Huang, Baobing,et al."Biomolecule-derived N/S co-doped CNT-graphene hybrids exhibiting excellent electrochemical activities".JOURNAL OF POWER SOURCES 413(2019):408-417.