Get 20M+ Full-Text Papers For Less Than $1.50/day. Start a 14-Day Trial for You or Your Team.

Learn More →

Nanowires of spinel cathode material for improved lithium-ion storage

Nanowires of spinel cathode material for improved lithium-ion storage Li-excess layered materials, such as Li[Li0.2Mn0.54Ni0.13Co0.13]O2 (LMNCO) et al. are promising cathode materials that can be used in batteries for hybrid electric vehicles (HEV)/electric vehicles (EV), due to their excellent lithium-storage capability and very high energy density. Dramatic capacity loss during electrochemical cycling seriously hinders their practical implementation. It is found that the LMNCO layered cathode material suffers from structural instability and irreversible layered-to-spinel phase transition during lithiation/delithiation, leading to dramatic loss of capacity and deteriorated electrochemical kinetics. To overcome this challenge, we synthesize spinel-structured LHMNCO TBA nanowires using an electrospinning method followed by facile ion-exchange promoted phase transition. After 100 electrochemical cycles at the specific current 0.5 C, spinel-structured LHMNCO TBA still retains a capacity of about 200 mAh/g, corresponding to a capacity retention ratio of 90.5%, much higher than that of layered LMNCO nanowires, which only maintains a specific capacity of 137 mAh/g with only 48.9% capacity retention. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Ionics Springer Journals

Nanowires of spinel cathode material for improved lithium-ion storage

Xu, Wangwang; Wang, Ying
Ionics , Volume 24 (9) – Dec 26, 2017
Download PDF
10 pages

Loading next page...
 
/lp/springer-journals/nanowires-of-spinel-cathode-material-for-improved-lithium-ion-storage-1aTUx0c0Pe

References (40)

Publisher
Springer Journals
Copyright
Copyright © 2017 by Springer-Verlag GmbH Germany, part of Springer Nature
Subject
Chemistry; Electrochemistry; Renewable and Green Energy; Optical and Electronic Materials; Condensed Matter Physics; Energy Storage
ISSN
0947-7047
eISSN
1862-0760
DOI
10.1007/s11581-017-2386-1
Publisher site
See Article on Publisher Site

Abstract

Li-excess layered materials, such as Li[Li0.2Mn0.54Ni0.13Co0.13]O2 (LMNCO) et al. are promising cathode materials that can be used in batteries for hybrid electric vehicles (HEV)/electric vehicles (EV), due to their excellent lithium-storage capability and very high energy density. Dramatic capacity loss during electrochemical cycling seriously hinders their practical implementation. It is found that the LMNCO layered cathode material suffers from structural instability and irreversible layered-to-spinel phase transition during lithiation/delithiation, leading to dramatic loss of capacity and deteriorated electrochemical kinetics. To overcome this challenge, we synthesize spinel-structured LHMNCO TBA nanowires using an electrospinning method followed by facile ion-exchange promoted phase transition. After 100 electrochemical cycles at the specific current 0.5 C, spinel-structured LHMNCO TBA still retains a capacity of about 200 mAh/g, corresponding to a capacity retention ratio of 90.5%, much higher than that of layered LMNCO nanowires, which only maintains a specific capacity of 137 mAh/g with only 48.9% capacity retention.

Journal

Ionics – Springer Journals

Published: Dec 26, 2017

There are no references for this article.