BROWSE

Related Researcher

Author

Cho, Jaephil
Nano Energy Storage Materials Lab (NESM)
Research Interests
  • Li-ion battery, metal-air battery, redox-flow battery, flexible battery .

ITEM VIEW & DOWNLOAD

A New High Power LiNi0.81Co0.1Al0.09O2 Cathode Material for Lithium-Ion Batteries

Cited 0 times inthomson ciCited 0 times inthomson ci
Title
A New High Power LiNi0.81Co0.1Al0.09O2 Cathode Material for Lithium-Ion Batteries
Author
Jo, MinkiNoh, MijungOh, PilgunKim, YoungsikCho, Jaephil
Keywords
Cathode materials; Li-ion batteries; LiNi0.81Co0.1Al0.09O2; Rate capability; Thermal stability
Issue Date
201409
Publisher
WILEY-V C H VERLAG GMBH
Citation
ADVANCED ENERGY MATERIALS, v.4, no.13, pp.1301583 -
Abstract
Among the various Ni-based layered oxide systems in the form of LiNi1-y-zCoyAlzO2 (NCA), the compostions between y = 0.1-0.15, z = 0.05 are the most successful and commercialized cathodes used in electric vehicles (EVs) and hybrid electric vehicles (HEVs). However, tremendous research effort has been dedicted to searching for better composition in NCA systems to overcome the limitations of these cathodes, particularly those that arise when they are used use at high discharge/charge rates (>5C) and in high temperature (60 °C) environments. In addition, improving the thermal stability at 4.5 V is also very important in terms of the total amount of heat generated and the onset temperature. Here, a new NCA composition in the form of LiNi0.81Co0.1Al0.09O2 (y = 0.1, z = 0.09) is reported for the first time. Compared to the LiNi0.85Co0.1Al0.05O2 cathode, LiNi0.81Co0.1Al0.09O2 exhibits an excellent rate capability of 155 mAh g-1 at 10 C with a cut-off voltage range between 3 and 4.5 V, corresponding to 562 Wh kg-1 at 24 °C. It additionally provides significantly improved thermal stability and electrochemical performance at the high temperature of 60 °C, with a discharge capacity of 122 mAh g-1 after 200 cycles with capacity retention of 59%.
URI
Go to Link
DOI
http://dx.doi.org/10.1002/aenm.201301583
ISSN
1614-6832
Appears in Collections:
ECHE_Journal Papers

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

Show full item record

qr_code

  • mendeley

    citeulike

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

MENU