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Nanosized Amorphous Materials as Anodes for Lithium Batteries

Published online by Cambridge University Press:  26 February 2011

Quan Fan  and
M. Stanley Whittingham
Quan Fan
Affiliation:
[email protected], State Univ. of New York at Binghamon, Chemistry, 25 Davis St, Apt 1, Binghamton, NY, 13905, United States, 201-887-3572
M. Stanley Whittingham
Affiliation:
[email protected], State Univ. of New York at Binghamton, Dept. of Chemistry, Binghamton, NY, 13902, United States
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Abstract

The carbon anode presently used in commercial lithium ion batteries has a relatively low capacity and may pose safety problems particularly under fast charging. Nanosized amorphous materials have excellent electrochemical behavior when applied as anodes for lithium ion batteries; especially they have advantages over bulk materials on capacity retention and rate capability. The initial studies on some amorphous compounds are promising. A commercialized tin-cobalt-carbon amorphous material, which is composed of ∼5nm nanoparticles, shows a capacity retention of >350 mAh/g for 50+ cycles. Manganese oxide nanofibers were synthesized by polymer templated electrospinning followed by calcinations. The fibers have 200-500 nm diameter and the main composition is Mn3O4. The capacity remains 400 mAh/g for at least 50 cycles.

Keywords

energy-storageLiMn
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 972: Symposium AA – Solid-State Ionics—2006 , 2006 , 0972-AA07-03-BB08-03
Copyright
Copyright © Materials Research Society 2007

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