Influence of Li3V2(PO4)3 complexing on the performance of LiMnPO4 based materials utilized in lithium ion battery
Source abstract
Abstract
LiMnPO4/C, LiMn0.8Fe0.2PO4/C, and corresponding composites with nominal formula of 0.8LiMnPO(4) center dot 0.2Li(3)V(2)(PO4)(3)/C and 0.8LiMn(0.8)-Fe0.2PO4 center dot 0.2Li(3)V(2)(PO4)(3)/C are synthesized via high temperature solid-state reaction. According to refinement results, the phase ratios of olivine and NASICON in 0.8LiMnPO(4) center dot 0.2Li(3)V(2)(PO4)(3)/C and 0.8LiMn(0.8)Fe(0.2)PO(4) center dot 0.2Li(3)V(2)(PO4)(3)/C are 84.2:15.8 and 81.2: 18.8, respectively. Complexing Li3V2(PO4)(3) plays negligible influence on discharge capacity when cycled between 2.5 and 4.4 V vs. Li+/Li. Instead, this strategy significant improves the rate capability of phosphate composites. The discharge capacities of composites at 2 C are 103.8 and 117.6 mA h g(-1) which are much higher than those of corresponding olivine counterparts, namely 35.3 and 91.1 mA h g(-1) (C) 2013 Elsevier Ltd and Techna Group S.r.l. All rights reserved.
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Research context
OpenAlex topics: Advancements in Battery Materials · Advanced Battery Materials and Technologies · Advanced Battery Technologies Research
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