Effect of Fluoroethylene Carbonate in the Electrolyte for LiNi0.5Mn1.5O4 Cathode in Lithium-ion Batteries
Interphase
Lithium carbonate
DOI:
10.33961/jecst.2017.8.1.53
Publication Date:
2019-03-27T05:29:46Z
AUTHORS (5)
ABSTRACT
Fluoroethylene carbonate (FEC) was studied as an additive for the electrolyte in lithium ion batteries with LiNi0.5Mn1.5O4 (LNMO) spinel cathode operating at a high potential beyond 4.7 V (vs. Li/Li+). It found that FEC electrochemically active 1st charge cycle on LNMO cathode. The presence of large amount (more than 40 vol%) caused severe side reactions abnormally long voltage plateaus. In contrast, when contained less 30 vol% , surface stabilized by formation solid-electrolyte interphase (SEI), leading to improved cyclability. However, resistance from SEI limited rate capability because sluggish transportation through and electronic insulation between particles electrode. Keywords: LNMO, Electrolyte, High electrode,
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