서브비주얼

HOME > Publication > Paper

Paper

2017 | "Ultra-fine SnO2 nanoparticles doubly embedded in amorphous carbon and…

페이지 정보

작성자 관리자 /   작성일2018-02-21 /   조회195회

첨부파일

본문

Title : Ultra-fine SnO2 nanoparticles doubly embedded in amorphous carbon and reduced graphene oxide (rGO) for superior lithium storage
Authors :Md. Selim Arif Sher Shah, Jooyoung Leeb, A. Reum Park, Youngjin Choi, Woo-Jae Kim, Juhyun Park, Chan-Hwa Chung, Jaeyun Kim, Byungkwon Lim, Pil J. Yoo

Journal : Electrochimica Acta
Vol/No/Page : 224/201-210
DOI : https://doi.org/10.1016/j.electacta.2016.12.049

Abstract :
 SnO2 is a well-studied anode material for lithium ion batteries (LIBs). However, it undergoes severe capacity fading because of a large volume change (ꠑ300%) during cycling. Composites of SnO2 with electro-conductive graphene would deliver improved capacity and rate performance. Nevertheless, achieving the theoretical capacity of SnO2 is still elusive, mainly because of disintegration of the active material from graphene and severe aggregation of SnO2, or Sn nanoparticles produced upon cycling. To surmount these limitations, in this work, nanocomposites containing ultra-fine sized SnO2 nanoparticles (UFSN) with reduced graphene oxide and amorphous carbon were synthesized in a single step at low temperature and environmentally benign way, in which ascorbic acid was employed as the carbon source and reducing agent. UFSN could decrease the lithium ion diffusion path length. As a result of effective buffering effect afforded by the mesoporous structure against volume change and improved lithium ion diffusivity, the ternary nanocomposite achieves ultra-high capacity of 1245 mAh gꠗ1 after 210 cycles at 100 mA gꠗ1 and excellent cycling stability. Since the proposed approach is facile, straightforward, and highly reproducible, it is anticipated that this system would be a potential alternative to the conventional graphite anode for LIBs.

Paper 목록

Total 59건 1 페이지
번호 Paper
59 2017 "Electrodeposited nickel–cobalt sulfide nanosheet on polyacrylonitrile nanofibers: a binder-free electrode for flexible supercapacitors", Materials Research Express
58 2017 "The Pine-Needle-Inspired Structure of Zinc Oxide Nanorods Grown on Electrospun Nanofibers for High-Performance Flexible Supercapacitors", small
57 2017 "Electrochemical deposition of NiCo magnetic layer on the aluminum substrate", Science of advanced materials
56 2017 "The symmetric cell configuration in a desalination battery with the electro-deposited dendritic silver electrodes", Science of advanced materials
55 2017 "Non-stoichiometric SnS microspheres with highly enhanced photoreduction efficiency for Cr(VI) ions", RSC Advances
54 2017 "Effect of electrolyte composition on the morphological structures of dendritic copper powders prepared by a spontaneous galvanic displacement reaction", Korean Journal of Chemical Engineering
53 2017 "Highly sensitive and selective electrochemical cortisol sensor using bifunctional protein interlayer-modified graphene electrodes", Sensors and Actuators B: Chemical
52 2017 "A Facile Electrochemical Preparation of Violarite (Ni2FeS4) Nanosheets on Carbon Sheet and its Application towards Non-Enzymatic Glucose Sensing", ChemistrySelect
열람중 2017 "Ultra-fine SnO2 nanoparticles doubly embedded in amorphous carbon and reduced graphene oxide (rGO) for superior lithium storage", Electrochimica Acta
50 2016 "Neutral pH Gel Electrolytes for V2O5·0.5H2O‑Based Energy Storage Devices", ACS APPLIED MATERIALS & INTERFACES