BROWSE

Related Researcher

Author's Photo

Jung, Yoon Seok
Electrochemical Solid-State Energy Storage Lab
Research Interests
  • Batteries, All-solid-state batteries, solid electrolytes, electrodes, atomic layer deposition,energy storage devices

ITEM VIEW & DOWNLOAD

Sn-carbon core-shell powder for anode in lithium secondary batteries

Cited 72 times inthomson ciCited 72 times inthomson ci
Title
Sn-carbon core-shell powder for anode in lithium secondary batteries
Author
Jung, Yoon SeokLee, Kyu TaeRyu, JHIm, DOh, SM
Keywords
LI-ION BATTERIES; INSERTION ELECTRODE; DISORDERED CARBONS; PARTICLE-SIZE; TIN; CAPACITY; PERFORMANCE; MECHANISM; GRAPHITE
Issue Date
2005
Publisher
ELECTROCHEMICAL SOC INC
Citation
JOURNAL OF THE ELECTROCHEMICAL SOCIETY, v.152, no.7, pp.A1452 - A1457
Abstract
Spherical Sn-carbon core-shell powder was synthesized through a resorcinol-formaldehyde (RF) microemulsion polymerization performed in the presence of hydrophobized Sn nanoparticles. The Sn-carbon core-shell structure was found to greatly enhance the cycle life compared to the mixture of Sn and spherical carbon when evaluated as the anode in lithium-ion batteries. A core-shell powder containing 20 wt % Sn showed 69% capacity retention at the 40th cycle when cycled between 0 and 2.0 V (vs Li/Li+) at a constant current of 40 mA g(-1). The mixture of 20 wt % Sn nanopowder and 80 wt % spherical carbon powder exhibited only 10% capacity retention in the same test condition. It is believed that the improved cyclability achieved with the core-shell powder is largely attributed to the inhibition of aggregation between Sn nanoparticles. The marginal polarization due to an intimate electrical contact made between Sn core and carbon shell is an additional advantageous feature achieved with this electrode.
URI
Go to Link
DOI
10.1149/1.1933616
ISSN
0013-4651
Appears in Collections:
ECHE_Journal Papers
Files in This Item:
2-s2.0-23744483100.pdf Download

find_unist can give you direct access to the published full text of this article. (UNISTARs only)

Show full item record

qrcode

  • mendeley

    citeulike

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

MENU