Deformable fibrous carbon supported ultrafine nano-SnO2 as a high volumetric capacity and cyclic durable anode for Li storage

标题

Deformable fibrous carbon supported ultrafine nano-SnO2 as a high volumetric capacity and cyclic durable anode for Li storage

作者

作者:Hu, RZ (Hu, Renzong)^[1,2 ]; Zhang, HY (Zhang, Hanyin)^[1 ]; Liu, JW (Liu, Jiangwen)^[1 ]; Chen, DC (Chen, Dongchang)^[2 ]; Yang, LC (Yang, Lichun)^[1 ]; Zhu, M (Zhu, Min)^[1 ]; Liu, ML (Liu, Meilin)^[2 ]

期刊信息

摘要

Multidimensional fibrous carbon scaffolds, derived from carbonized filter papers (CFPs), were used to support SnO2 nanocrystals (NCs, with a size of 4-5 nm) to form a free-standing SnO2NC@CFP hybrid anode for Li-ion batteries. The SnO2NC particles are well accreted on the surfaces of 1D carbon fibers and 2D ultrathin carbon sheets while maintaining 3D interconnected pores of the carbon matrices for fast ionic transport. The SnO2NC@CFP hybrid electrode exhibits long-term higher energy density than the commercial graphite anode, and excellent rate capability, mainly due to good dispersion of SnO2 in the multidimensional conductive carbon. In particular, the reversible deformation of the flexible fibrous carbon matrices, as inferred from in situ Raman spectroscopy and SEM image analysis, facilitates stress release from the active SnO2NCs during discharge-charge cycling while maintaining the structural integrity of the self-supported SnO2NC@CFP anode. These demonstrate that the rational combination of the multidimensional architecture of deformable carbon with nanoscale active materials is ideally suited for high-performance Li-ion batteries.

关键词

KeyWords Plus:LITHIUM-ION BATTERIES; ONE-POT SYNTHESIS; SNO2/GRAPHENE COMPOSITE; GRAPHENE SHEETS; AMORPHOUS OXIDE; TIN OXIDE; ELECTRODE; SN; NANOCOMPOSITE; NANOPARTICLES

作者信息

作者信息

通讯作者地址:Zhu, M (通讯作者)

S China Univ Technol, Sch Mat Sci & Engn, Guangdong Prov Key Lab Adv Energy Storage Mat, Guangzhou 510640, Peoples R China.   增强组织信息的名称     South China University of Technology

地址:

	[ 1 ] S China Univ Technol, Sch Mat Sci & Engn, Guangdong Prov Key Lab Adv Energy Storage Mat, Guangzhou 510640, Peoples R China   增强组织信息的名称     South China University of Technology
	[ 2 ] Georgia Inst Technol, Sch Mat Sci & Engn, Atlanta, GA 30332 USA   增强组织信息的名称     University System of Georgia     Georgia Institute of Technology

电子邮件地址:memzhu@scut.edu.cn; meilin.liu@mse.gatech.edu

出版商

ROYAL SOC CHEMISTRY, THOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLAND

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