Enhanced electrochemical performance of LiNi0.5Mn1.5O4 cathode using an electrolyte with 3-(1,1,2,2-tetrafluoroethoxy)-1,1,2,2-tetrafluoropropane

Ying Luo; Taolin Lu; Yixiao Zhang; Liqin Yan; Jingying Xie; Samuel S. Mao

doi:10.1016/j.jpowsour.2016.05.053

Enhanced electrochemical performance of LiNi_0.5Mn_1.5O₄ cathode using an electrolyte with 3-(1,1,2,2-tetrafluoroethoxy)-1,1,2,2-tetrafluoropropane

Ying Luo
, Taolin Lu
, Yixiao Zhang
, Liqin Yan
, Jingying Xie
, Samuel S. Mao

Mechanical & Nuclear Engineering

Harbin Institute of Technology
Shanghai Power & Energy Storage Battery System Engineering Tech. Co. Ltd.
Shanghai Engineering Center for Power and Energy Storage Systems
University of California, Berkeley

Research output: Contribution to journal › Article › peer-review

35 Scopus citations

Abstract

A new electrolyte based on fluorinated 3-(1,1,2,2-tetrafluoroethoxy)-1,1,2,2-tetrafluoropropane (F-EPE) solvent is studied in LiNi_0.5Mn_1.5O₄/Li cells. The electrochemical stability of the electrolyte with 10% F-EPE is carried out by linear sweep voltammetry and electrochemical floating test. These results indicate that the electrolyte with F-EPE has an oxidation potential of more than 5.2 V vs. Li⁺/Li, which is higher than that without F-EPE and enlarges the oxidative window of electrolyte. A thin and uniform SEI layer is formed on the surface of LiNi_0.5Mn_1.5O₄ cathode by using electrolyte with F-EPE, leads to an improvement in the electrochemical performance, validated by charge-discharge tests, EIS, SEM, TEM, and XPS analysis.

Original language	British English
Pages (from-to)	134-141
Number of pages	8
Journal	Journal of Power Sources
Volume	323
DOIs	https://doi.org/10.1016/j.jpowsour.2016.05.053
State	Published - 15 Aug 2016

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 7 Affordable and Clean Energy

Keywords

Fluorinated solvents
High voltage electrolyte
High voltage spinel
Lithium ion battery

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10.1016/j.jpowsour.2016.05.053

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@article{9ffa736034ca40dc94f032c9facde149,

title = "Enhanced electrochemical performance of LiNi0.5Mn1.5O4 cathode using an electrolyte with 3-(1,1,2,2-tetrafluoroethoxy)-1,1,2,2-tetrafluoropropane",

abstract = "A new electrolyte based on fluorinated 3-(1,1,2,2-tetrafluoroethoxy)-1,1,2,2-tetrafluoropropane (F-EPE) solvent is studied in LiNi0.5Mn1.5O4/Li cells. The electrochemical stability of the electrolyte with 10\% F-EPE is carried out by linear sweep voltammetry and electrochemical floating test. These results indicate that the electrolyte with F-EPE has an oxidation potential of more than 5.2 V vs. Li+/Li, which is higher than that without F-EPE and enlarges the oxidative window of electrolyte. A thin and uniform SEI layer is formed on the surface of LiNi0.5Mn1.5O4 cathode by using electrolyte with F-EPE, leads to an improvement in the electrochemical performance, validated by charge-discharge tests, EIS, SEM, TEM, and XPS analysis.",

keywords = "Fluorinated solvents, High voltage electrolyte, High voltage spinel, Lithium ion battery",

author = "Ying Luo and Taolin Lu and Yixiao Zhang and Liqin Yan and Jingying Xie and Mao, \{Samuel S.\}",

note = "Funding Information: This work was financially supported by National 863 Program (No. 2014AA052202 ); National Natural Science Foundation of China (No. 21373137 ); and Shanghai Science and Technology Engineering Research Center Program (No. 13DZ2280200 , No. 15DZ2282000 ). Publisher Copyright: {\textcopyright} 2016 Published by Elsevier B.V.",

year = "2016",

month = aug,

day = "15",

doi = "10.1016/j.jpowsour.2016.05.053",

language = "British English",

volume = "323",

pages = "134--141",

journal = "Journal of Power Sources",

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TY - JOUR

T1 - Enhanced electrochemical performance of LiNi0.5Mn1.5O4 cathode using an electrolyte with 3-(1,1,2,2-tetrafluoroethoxy)-1,1,2,2-tetrafluoropropane

AU - Luo, Ying

AU - Lu, Taolin

AU - Zhang, Yixiao

AU - Yan, Liqin

AU - Xie, Jingying

AU - Mao, Samuel S.

N1 - Funding Information: This work was financially supported by National 863 Program (No. 2014AA052202 ); National Natural Science Foundation of China (No. 21373137 ); and Shanghai Science and Technology Engineering Research Center Program (No. 13DZ2280200 , No. 15DZ2282000 ). Publisher Copyright: © 2016 Published by Elsevier B.V.

PY - 2016/8/15

Y1 - 2016/8/15

N2 - A new electrolyte based on fluorinated 3-(1,1,2,2-tetrafluoroethoxy)-1,1,2,2-tetrafluoropropane (F-EPE) solvent is studied in LiNi0.5Mn1.5O4/Li cells. The electrochemical stability of the electrolyte with 10% F-EPE is carried out by linear sweep voltammetry and electrochemical floating test. These results indicate that the electrolyte with F-EPE has an oxidation potential of more than 5.2 V vs. Li+/Li, which is higher than that without F-EPE and enlarges the oxidative window of electrolyte. A thin and uniform SEI layer is formed on the surface of LiNi0.5Mn1.5O4 cathode by using electrolyte with F-EPE, leads to an improvement in the electrochemical performance, validated by charge-discharge tests, EIS, SEM, TEM, and XPS analysis.

AB - A new electrolyte based on fluorinated 3-(1,1,2,2-tetrafluoroethoxy)-1,1,2,2-tetrafluoropropane (F-EPE) solvent is studied in LiNi0.5Mn1.5O4/Li cells. The electrochemical stability of the electrolyte with 10% F-EPE is carried out by linear sweep voltammetry and electrochemical floating test. These results indicate that the electrolyte with F-EPE has an oxidation potential of more than 5.2 V vs. Li+/Li, which is higher than that without F-EPE and enlarges the oxidative window of electrolyte. A thin and uniform SEI layer is formed on the surface of LiNi0.5Mn1.5O4 cathode by using electrolyte with F-EPE, leads to an improvement in the electrochemical performance, validated by charge-discharge tests, EIS, SEM, TEM, and XPS analysis.

KW - Fluorinated solvents

KW - High voltage electrolyte

KW - High voltage spinel

KW - Lithium ion battery

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DO - 10.1016/j.jpowsour.2016.05.053

M3 - Article

AN - SCOPUS:84969509957

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VL - 323

SP - 134

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JO - Journal of Power Sources

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