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Query: EC:6.2.1.1 (
ACS
)
78,556
document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)
Performances of lithium-ion batteries at subambient temperatures are extremely restricted by the resistive interphases originated from electrolyte decomposition, especially on the anode surface. This work reports a novel strategy that an anode interphase of low impedance is constructed by applying an electrolyte additive dimethyl sulfite (DMS). Electrochemical measurements indicate that the as-constructed interphase provides graphite/LiNi
0.5
Co
0.2
Mn
0.3
O
2
pouch cells with excellent low-temperature performance, outperforming the interphase constructed by
1,3,2-dioxathiolane 2,2-dioxide
(DTD), a common commercially used electrolyte additive. Spectral characterizations in combination with theoretical calculations demonstrate that the improved performance is attributed to the unique molecular structure of DMS, which presents appropriate reduction activity and constructs the more stable and ionically conductive anode interphase due to the weaker combination of its reduction product with lithium ions than DTD. This rational design of interphases via an additive structure has been proven to be a low cost but rather an effective approach to tailor the performances of lithium-ion batteries.
ACS
Appl Mater Interfaces 2019 Oct 16
PMID:Tailoring Low-Temperature Performance of a Lithium-Ion Battery via Rational Designing Interphase on an Anode. 3155 54
