Cited 0 time in webofscience Cited 0 time in scopus

Effects of a Sodium Phosphate Electrolyte Additive on Elevated Temperature Performance of Spinel Lithium Manganese Oxide Cathodes

Title
Effects of a Sodium Phosphate Electrolyte Additive on Elevated Temperature Performance of Spinel Lithium Manganese Oxide Cathodes
Authors
Jo, MinsangPark, Seong-HyoLee, Hochun
DGIST Authors
Jo, Minsang; Park, Seong-Hyo; Lee, Hochun
Issue Date
2021-08
Citation
Materials, 14(16)
Type
Article
Author Keywords
lithium-ion batteryspinel lithium manganese oxidemanganese dissolutionsodium phosphateelectrolyte additivethermal stability
Keywords
ELECTROCHEMICAL STABILITYCAPACITY LOSSESLIMN2O4 CATHODEIONLIDISSOLUTIONIMPROVEMENTBATTERIESCARBONATEGRAPHITE
ISSN
1996-1944
Abstract
LiMn2O4 (LMO) spinel cathode materials suffer from severe degradation at elevated temperatures because of Mn dissolution. In this research, monobasic sodium phosphate (NaH2PO4, P2) is examined as an electrolyte additive to mitigate Mn dissolution; thus, the thermal stability of the LMO cathode material is improved. The P2 additive considerably improves the cyclability and storage performances of LMO/graphite and LMO/LMO symmetric cells at 60 degrees C. We explain that P2 suppresses the hydrofluoric acid content in the electrolyte and forms a protective cathode electrolyte interphase layer, which mitigates the Mn dissolution behavior of the LMO cathode material. Considering its beneficial role, the P2 additive is a useful additive for spinel LMO cathodes that suffer from severe Mn dissolution.
URI
http://hdl.handle.net/20.500.11750/15344
DOI
10.3390/ma14164670
Publisher
MDPI Open Access Publishing
Related Researcher
  • Author Lee, Hochun Electrochemistry Laboratory for Sustainable Energy(ELSE)
  • Research Interests Lithium-ion batteries; Novel Materials for rechargeable batteries; Novel energy conversion;storage systems; Electrochemistry; 리튬이차전지; 이차전지용 신규 전극 및 전해액; 신규 에너지변환 및 저장 시스템; 전기화학
Files:
There are no files associated with this item.
Collection:
Department of Energy Science and EngineeringElectrochemistry Laboratory for Sustainable Energy(ELSE)1. Journal Articles


qrcode mendeley

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

BROWSE