Manganese deception on graphene and implications in catalysis

doi:10.1016/j.carbon.2018.02.082

IHEP OpenIR > 多学科研究中心

	Manganese deception on graphene and implications in catalysis
	Ye, RQ; Dong JC(董俊才); Dong, JC; Wang, LQ; Mendoza-Cruz, R; Li, YL; An, PF; Yacaman, MJ; Yakobson, BI; Chen, DL; Tour, JM; An PF(安鹏飞); Chen DL(陈栋梁)
	2018
发表期刊	CARBON (IF:6.337[JCR-2016],6.834[5-Year])
ISSN	0008-6223
EISSN	1873-3891
卷号	132 页码:623-631
文章类型	Article
摘要	Heteroatom-doped metal-free graphene has been widely studied as the catalyst for the oxygen reduction reaction (ORR). Depending on the preparation method and the dopants, the ORR activity varies ranging from a two-electron to a four-electron pathway. The different literature reports are difficult to correlate due to the large variances. However, due to the potential metal contamination, the origin of the ORR activity from "metal-free" graphene remains confusing and inconclusive. Here we decipher the ORR catalytic activities of diverse architectures on graphene derived from reduced graphene oxide. High angle annular dark field scanning transmission electron microscopy, X-ray absorption near edge structure, extended X-ray absorption fine structure, and trace elemental analysis methods are employed. The mechanistic origin of ORR activity is associated with the trace manganese content and reaches its highest performance at an onset potential of 0.94 V when manganese exists as a mononuclear-centered structure within defective graphene. This study exposes the deceptive role of trace metal in formerly thought to be metal-free graphene materials. It also provides insight into the design of better-performing catalyst for ORR by underscoring the coordination chemistry possible for future single-atom catalyst materials. (c) 2018 Elsevier Ltd. All rights reserved.
关键词	Metal-free catalyst Oxygen reduction reaction Heteroatom-doped graphene Metal-free graphene
DOI	10.1016/j.carbon.2018.02.082
关键词[WOS]	OXYGEN REDUCTION REACTION ; NITROGEN-DOPED GRAPHENE ; METALLIC IMPURITIES ; ALKALINE MEDIA ; EFFICIENT ; OXIDE ; CARBON ; ELECTROCATALYST ; PERFORMANCE ; COMPLEXES
收录类别	SCI ; ADS ; EI
语种	英语
WOS研究方向	Chemistry ; Materials Science
WOS类目	Chemistry, Physical ; Materials Science, Multidisciplinary
WOS记录号	WOS:000428233000067
EI入藏号	20181004878980
ADS Bibcode	2018Carbo.132..623Y
ADS URL	https://ui.adsabs.harvard.edu/abs/2018Carbo.132..623Y
ADS引文	https://ui.adsabs.harvard.edu/abs/2018Carbo.132..623Y/citations
引用统计	正在获取... 被引频次：19 [ADS]
文献类型	期刊论文
条目标识符	https://ir.ihep.ac.cn/handle/311005/285770
专题	多学科研究中心
通讯作者	Chen DL(陈栋梁)
作者单位	中国科学院高能物理研究所
第一作者单位	中国科学院高能物理研究所
通讯作者单位	中国科学院高能物理研究所
推荐引用方式 GB/T 7714	Ye, RQ,Dong JC,Dong, JC,et al. Manganese deception on graphene and implications in catalysis[J]. CARBON,2018,132:623-631.
APA	Ye, RQ.,董俊才.,Dong, JC.,Wang, LQ.,Mendoza-Cruz, R.,...&陈栋梁.(2018).Manganese deception on graphene and implications in catalysis.CARBON,132,623-631.
MLA	Ye, RQ,et al."Manganese deception on graphene and implications in catalysis".CARBON 132(2018):623-631.