Please use this identifier to cite or link to this item:
Title: Increasing the high rate performance of mixed metal phospho-olivine cathodes through collective and cooperative strategies
Authors: Ding, B.
Ji, G.
Ma, Y.
Xiao, P.
Lu, L. 
Lee, J.Y. 
Keywords: Bi-continuous
High rate
Issue Date: 2014
Citation: Ding, B., Ji, G., Ma, Y., Xiao, P., Lu, L., Lee, J.Y. (2014). Increasing the high rate performance of mixed metal phospho-olivine cathodes through collective and cooperative strategies. Journal of Power Sources 247 : 273-279. ScholarBank@NUS Repository.
Abstract: The performance of lithium manganese phosphate as a lithium-ion battery cathode material is improved by collective and cooperative strategies including Fe substitution, carbon coating, and the assembly of carbon-coated LiMn 1-xFexPO4 nanocrystals into a highly dense packing of monodisperse microboxes. These strategies are implemented experimentally by a facile and scalable synthesis method. The dense packing allows the conductive carbon coating to be interconnected into a continuous three-dimensional network for electron conduction. The porosity in the packed structure forms the complementary network for Li+ transport in the electrolyte. The primary particles are nanosized and Fe-substituted to improve the effectiveness of Li+ insertion and extraction reactions in the solid phase. The reduction of transport resistance external and internal to the nanocrystals yields a Li storage host with good rate performance (116 mAh g -1 at 5 C discharge rate where C = 170 mA g-1) and cycle stability (95% retention of initial capacity in 50 cycles). Electrochemical impedance spectroscopy and morphology examination of the cycled microboxes reveal a robust packed structure with stable surfaces. © 2013 Elsevier B.V. All rights reserved.
Source Title: Journal of Power Sources
ISSN: 03787753
DOI: 10.1016/j.jpowsour.2013.08.114
Appears in Collections:Staff Publications

Show full item record
Files in This Item:
There are no files associated with this item.


checked on Mar 27, 2020


checked on Mar 27, 2020

Page view(s)

checked on Mar 20, 2020

Google ScholarTM



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