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"Protrusions'' or "holes'' in graphene: which is the better choice for sodium ion storage?
Yang, Yijun1; Tang, Dai-Ming2; Zhang, Chao2; Zhang, Yihui1; Liang, Qifeng3; Chen, Shimou4; Weng, Qunhong2; Zhou, Min2; Xue, Yanming2; Liu, Jiangwei2; Wu, Jinghua5; Cui, Qiu Hong1; Lian, Chao1; Hou, Guolin4; Yuan, Fangli4; Bando, Yoshio2,6; Golberg, Dmitri2,7; Wang, Xi1
2017
发表期刊ENERGY & ENVIRONMENTAL SCIENCE
ISSN1754-5692
卷号10期号:4页码:979-986
摘要

The main challenge associated with sodium-ion battery (SIB) anodes is a search for novel candidate materials with high capacity and excellent rate capability. The most commonly used and effective route for graphene-based anode design is the introduction of in-plane "hole'' defects via nitrogen-doping; this creates a spacious reservoir for storing more energy. Inspired by mountains in nature, herein, we propose another way -the introduction of blistering in graphene instead of making "holes''; this facilitates adsorbing/ inserting more Na+ ions. In order to properly answer the key question: ""protrusions'' or "holes'' in graphene, which is better for sodium ion storage?'', two types of anode materials with a similar doping level were designed: a phosphorus-doped graphene (GP, with protrusions) and a nitrogen-doped graphene (GN, with holes). As compared with GN, the GP anode perfectly satisfies all the desired criteria: it reveals an ultrahigh capacity (374 mA h g(-1) after 120 cycles at 25 mA g(-1)) comparable to the best graphite anodes in a standard Li-ion battery (B372 mA h g(-1)), and exhibits an excellent rate capability (210 mA h g(-1) at 500 mA g(-1)). In situ transmission electron microscopy (TEM) experiments and density functional theory (DFT) calculations were utilized to uncover the origin of the enhanced electrochemical activity of "protrusions'' compared to "holes'' in SIBs, down to the atomic scale. The introduction of protrusions through P-doping into graphene is envisaged to be a novel effective way to enhance the capacity and rate performance of SIBs.

文章类型Article
WOS标题词Science & Technology ; Physical Sciences ; Technology ; Life Sciences & Biomedicine
DOI10.1039/c7ee00329c
收录类别SCI
语种英语
关键词[WOS]N-DOPED GRAPHENE ; PERFORMANCE ANODE MATERIAL ; OXYGEN REDUCTION REACTION ; CARBON NANOFIBERS ; POROUS CARBON ; BATTERY APPLICATIONS ; ELECTRODE MATERIALS ; LITHIUM STORAGE ; RATE CAPABILITY ; ENERGY-STORAGE
WOS研究方向Chemistry ; Energy & Fuels ; Engineering ; Environmental Sciences & Ecology
WOS类目Chemistry, Multidisciplinary ; Energy & Fuels ; Engineering, Chemical ; Environmental Sciences
项目资助者Beijing Jiaotong University ; World Premier International (WPI) Research Center on Materials Nanoarchitectonics (MANA), MEXT, Japan ; National Natural Science Foundation of China (NSFC)(11574215) ; Scientific Research Foundation for the Returned Overseas Chinese Scholars, the State Education Ministry of China ; Australian Research Council
WOS记录号WOS:000398909900017
引用统计
被引频次:30[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ipe.ac.cn/handle/122111/22145
专题多相复杂系统国家重点实验室
作者单位1.Beijing Jiaotong Univ, Sch Sci, Minist Educ, Key Lab Luminescence & Opt Informat, Beijing 100044, Peoples R China
2.Natl Inst Mat Sci, World Premier Int Ctr Mat Nanoarchitecton WPI MAN, Namiki 1-1, Tsukuba, Ibaraki 3050044, Japan
3.Shaoxing Univ, Dept Phys, Shaoxing 312000, Peoples R China
4.Chinese Acad Sci, Inst Proc Engn, Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China
5.Soochow Univ, Coll Nano Sci & Technol, Suzhou 215123, Jiangsu, Peoples R China
6.Univ Wollongong, AIIM, Squires Way, North Wollongong, NSW 2500, Australia
7.Queensland Univ Technol, Fac Sci & Engn, 2 George St, Brisbane, Qld 4000, Australia
推荐引用方式
GB/T 7714
Yang, Yijun,Tang, Dai-Ming,Zhang, Chao,et al. "Protrusions'' or "holes'' in graphene: which is the better choice for sodium ion storage?[J]. ENERGY & ENVIRONMENTAL SCIENCE,2017,10(4):979-986.
APA Yang, Yijun.,Tang, Dai-Ming.,Zhang, Chao.,Zhang, Yihui.,Liang, Qifeng.,...&Wang, Xi.(2017)."Protrusions'' or "holes'' in graphene: which is the better choice for sodium ion storage?.ENERGY & ENVIRONMENTAL SCIENCE,10(4),979-986.
MLA Yang, Yijun,et al.""Protrusions'' or "holes'' in graphene: which is the better choice for sodium ion storage?".ENERGY & ENVIRONMENTAL SCIENCE 10.4(2017):979-986.
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