Synergistic Effect of Mesoporous Co3O4 Nanowires Confined by N-Doped   Graphene Aerogel for Enhanced Lithium Storage

doi:10.1002/smll.201600632

CORC > 北京大学 > 工学院

	Synergistic Effect of Mesoporous Co3O4 Nanowires Confined by N-Doped Graphene Aerogel for Enhanced Lithium Storage
	Yao, Xin ; Guo, Guilue ; Zhao, Yang ; Zhang, Yu ; Tan, Si Yu ; Zeng, Yongfei ; Zou, Ruqiang ; Yan, Qingyu ; Zhao, Yanli
刊名	SMALL
	2016
关键词	3D graphene,lithium storage,mesoporous Co3O4 nanowires,nitrogen doping,one-step hydrothermal method CHEMICAL-VAPOR-DEPOSITION LI-ION BATTERIES ENERGY-STORAGE ELECTROCHEMICAL PERFORMANCE ELECTRODE MATERIALS SOLID-ELECTROLYTE ANODE MATERIALS IN-SITU CARBON NANOMATERIALS
DOI	10.1002/smll.201600632
英文摘要	A one-step multipurpose strategy is developed to realize a sophisticated design that simultaneously integrates three desirable components of nitrogen dopant, 3D graphene, and 1D mesoporous metal oxide nanowires into one hybrid material. This facile synthetic strategy includes a one-step hydrothermal reaction followed by topotactic calcination. The utilization of urea as the starting reagent enables the precipitation of precursor nanowires and concurrent doping of nitrogen heteroatoms on graphene during hydrothermal reaction, while at the same time the graphene nanosheets are self-assembled to afford a 3D scaffold. Detailed characterizations on the final calcined product are conducted to confirm the phase purity, porosity, nitrogen composition, and morphology. The integration of two building blocks, i.e., flexible graphene nanosheets and Co3O4 nanowires, enables various intertwining behaviors such as seaming, bridging, hooping, bundling, and sandwiching, of which synergistic effect substantially enhances electrical and electrochemical properties of the resultant hybrid. For lithium ion battery application of the hybrid, a remarkably high capacity more than 1200 mA h g(-1) (at 100 mA g(-1)) is stabilized over 100 cycles with coulombic efficiency higher than 97%. Even during rapid discharge/charge processes (1000 mA g(-1)), a reversible charge capacity of 812 mA h g(-1) is still retained after 230 cycles.; National Research Foundation (NRF); Prime Minister's Office, Singapore under its Campus for Research Excellence and Technological Enterprise (CREATE) Programme-Singapore Peking University Research Centre for a Sustainable Low-Carbon Future; NTU-A^starSTAR Silicon Technologies Centre of Excellence [11235100003]; Singapore MOE AcRF Tier 1 grant [RG2/13]; Singapore NRF under CREATE programme-EMobility in Megacities; SCI(E); EI; PubMed; ARTICLE; rzou@pku.edu.cn; alexyan@ntu.edu.sg; zhaoyanli@ntu.edu.sg; 28; 3849-3860; 12
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/433396]
专题	工学院
推荐引用方式 GB/T 7714	Yao, Xin,Guo, Guilue,Zhao, Yang,et al. Synergistic Effect of Mesoporous Co3O4 Nanowires Confined by N-Doped Graphene Aerogel for Enhanced Lithium Storage[J]. SMALL,2016.
APA	Yao, Xin.,Guo, Guilue.,Zhao, Yang.,Zhang, Yu.,Tan, Si Yu.,...&Zhao, Yanli.(2016).Synergistic Effect of Mesoporous Co3O4 Nanowires Confined by N-Doped Graphene Aerogel for Enhanced Lithium Storage.SMALL.
MLA	Yao, Xin,et al."Synergistic Effect of Mesoporous Co3O4 Nanowires Confined by N-Doped Graphene Aerogel for Enhanced Lithium Storage".SMALL (2016).