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Title: Effect of LiBOB additive on the electrochemical performance of LiCoPO4
Authors: Aravindan, Vanchiappan
Cheah, Yan Ling
Wong, Chui Ling
Madhavi, Srinivasan
Issue Date: 2012
Source: Aravindan, V., Cheah, Y. L., Wong, C. L., & Madhavi, S. (2012). Effect of LiBOB Additive on the Electrochemical Performance of LiCoPO4. Journal of The Electrochemical Society, 159(9), A1435-A1439.
Series/Report no.: Journal of the electrochemical society
Abstract: Solid-state method is used to synthesize sub-micron size lithium cobalt phosphate, LiCoPO4 particles. Powder X-ray diffraction pattern reveal the formation of pure phase orthorhombic structure with pnma space group. Electrochemical properties of LiCoPO4 are evaluated in half-cell configurations with conventional 1 M LiPF6 ethylene carbonate (EC): diethyl carbonate (DEC) electrolyte solution. Interestingly, increasing charging potential leads to the decrease in re-insertion potential as is confirmed by cyclic voltammetric (CV) measurements. Galvanostatic studies corroborated CV analysis and suggest that higher charge potential delivers maximum discharge capacity, but with severe capacity fade upon cycling. Incorporation of lithium bis(oxalato)borate (LiBOB) in conventional electrolyte solutions certainly enhances the cycleability of LiCoPO4 electrode, for example 3 wt% of LiBOB comprising electrolyte shows capacity retention of 74% of its initial discharge capacity after 25 cycles. The present study elucidates LiBOB addition is one of the unique approaches to alleviate the capacity fade of LiCoPO4 during cycling.
ISSN: 0013-4651
DOI: 10.1149/2.024209jes
Rights: © 2012 The Electrochemical Society. This paper was published in Journal of The Electrochemical Society and is made available as an electronic reprint (preprint) with permission of The Electrochemical Society. The paper can be found at the following official DOI: []. One print or electronic copy may be made for personal use only. Systematic or multiple reproduction, distribution to multiple locations via electronic or other means, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper is prohibited and is subject to penalties under law.
Fulltext Permission: open
Fulltext Availability: With Fulltext
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