Proton and Li-Ion Permeation through Graphene with Eight-Atom-Ring Defects

doi:10.1021/acsnano.0c02496

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	Proton and Li-Ion Permeation through Graphene with Eight-Atom-Ring Defects
	Griffin, Eoin; Mogg, Lucas; Hao, Guang-Ping; Kalon, Gopinadhan; Bacaksiz, Cihan; Lopez-Polin, Guillermo; Zhou, T. Y.; Guarochico, Victor; Cai, Junhao; Neumann, Christof; Winter, Andreas; Mohn, Michael; Lee, Jong Hak; Lin, Junhao; Kaiser, Ute; Grigorieva, Irina, V; Suenaga, Kazu; Ozyilmaz, Barbaros; Cheng, Hui-Min; Ren, Wencai; Turchanin, Andrey; Peeters, Francois M.; Geim, Andre K.; Lozada-Hidalgo, Marcelo
	2020-06-23
Source Publication	ACS NANO
Volume	14 Issue:6 Pages:7280-7286
Abstract	Defect-free graphene is impermeable to gases and liquids but highly permeable to thermal protons. Atomic-scale defects such as vacancies, grain boundaries, and Stone-Wales defects are predicted to enhance graphene's proton permeability and may even allow small ions through, whereas larger species such as gas molecules should remain blocked. These expectations have so far remained untested in experiment. Here, we show that atomically thin carbon films with a high density of atomic-scale defects continue blocking all molecular transport, but their proton permeability becomes similar to 1000 times higher than that of defect-free graphene. Lithium ions can also permeate through such disordered graphene. The enhanced proton and ion permeability is attributed to a high density of eight-carbon-atom rings. The latter pose approximately twice lower energy barriers for incoming protons compared to that of the six-atom rings of graphene and a relatively low barrier of similar to 0.6 eV for Li ions. Our findings suggest that disordered graphene could be of interest as membranes and protective barriers in various Li-ion and hydrogen technologies.
DOI	10.1021/acsnano.0c02496
WOS ID	WOS:000543744100086
Citation statistics
Document Type	期刊论文
Identifier	http://ir.imr.ac.cn/handle/321006/82752
Collection	中国科学院金属研究所
Recommended Citation GB/T 7714	Griffin, Eoin,Mogg, Lucas,Hao, Guang-Ping,et al. Proton and Li-Ion Permeation through Graphene with Eight-Atom-Ring Defects[J]. ACS NANO,2020,14(6):7280-7286.
APA	Griffin, Eoin.,Mogg, Lucas.,Hao, Guang-Ping.,Kalon, Gopinadhan.,Bacaksiz, Cihan.,...&Lozada-Hidalgo, Marcelo.(2020).Proton and Li-Ion Permeation through Graphene with Eight-Atom-Ring Defects.ACS NANO,14(6),7280-7286.
MLA	Griffin, Eoin,et al."Proton and Li-Ion Permeation through Graphene with Eight-Atom-Ring Defects".ACS NANO 14.6(2020):7280-7286.

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