Electrochemical characteristics of 0.3Li2MnO3–0.7LiMn1.5Ni0.5O4 composite cathode in pyrrolidinium-based ionic liquid electrolytes

P. P. Dahiya; Jagabandhu Patra; Jeng-Kuei Chang; Kirtan Sahoo; S. B. Majumder; S. Basu

doi:10.1016/j.jtice.2018.06.038

Electrochemical characteristics of 0.3Li₂MnO₃–0.7LiMn_1.5Ni_0.5O₄ composite cathode in pyrrolidinium-based ionic liquid electrolytes

P. P. Dahiya, Jagabandhu Patra, Jeng-Kuei Chang, Kirtan Sahoo, S. B. Majumder, S. Basu^*

^*Corresponding author for this work

Department of Materials Science and Engineering

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

2 Scopus citations

Abstract

In this work, we have compared the electrochemical characteristics of auto combustion synthesized 0.3Li₂MnO₃–0.7LiMn_1.5Ni_0.5O₄ composite cathode using conventional organic electrolyte and Li⁺/PMP-TFSI (N-propyl-N-methyl pyrrolidinium-bis(trifluoromethanesulfonyl) imide) ionic liquid (IL) at 25 °C and 60 °C. At 60 °C, IL electrolyte yields superior specific discharge capacity, cycleability, rate performance and voltage fading characteristics of the composite cathode. We have argued that the superiority of IL electrolyte is related to its relatively higher decomposition temperature. The effect of ILs on the cycle induced layered to nickel free spinel phase transformation in the composite cathode is also investigated by post cycling XRD.

Original language	English
Pages (from-to)	195-201
Number of pages	7
Journal	Journal of the Taiwan Institute of Chemical Engineers
Volume	95
DOIs	https://doi.org/10.1016/j.jtice.2018.06.038
State	Published - Feb 2019

Keywords

Ionic liquid
Li-ion batteries
Lithium manganese rich cathode

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10.1016/j.jtice.2018.06.038

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title = "Electrochemical characteristics of 0.3Li2MnO3–0.7LiMn1.5Ni0.5O4 composite cathode in pyrrolidinium-based ionic liquid electrolytes",

abstract = "In this work, we have compared the electrochemical characteristics of auto combustion synthesized 0.3Li2MnO3–0.7LiMn1.5Ni0.5O4 composite cathode using conventional organic electrolyte and Li+/PMP-TFSI (N-propyl-N-methyl pyrrolidinium-bis(trifluoromethanesulfonyl) imide) ionic liquid (IL) at 25 °C and 60 °C. At 60 °C, IL electrolyte yields superior specific discharge capacity, cycleability, rate performance and voltage fading characteristics of the composite cathode. We have argued that the superiority of IL electrolyte is related to its relatively higher decomposition temperature. The effect of ILs on the cycle induced layered to nickel free spinel phase transformation in the composite cathode is also investigated by post cycling XRD.",

keywords = "Ionic liquid, Li-ion batteries, Lithium manganese rich cathode",

author = "Dahiya, {P. P.} and Jagabandhu Patra and Jeng-Kuei Chang and Kirtan Sahoo and Majumder, {S. B.} and S. Basu",

note = "Publisher Copyright: {\textcopyright} 2018 Taiwan Institute of Chemical Engineers",

year = "2019",

month = feb,

doi = "10.1016/j.jtice.2018.06.038",

language = "English",

volume = "95",

pages = "195--201",

journal = "Journal of the Taiwan Institute of Chemical Engineers",

issn = "1876-1070",

publisher = "Taiwan Institute of Chemical Engineers",

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TY - JOUR

T1 - Electrochemical characteristics of 0.3Li2MnO3–0.7LiMn1.5Ni0.5O4 composite cathode in pyrrolidinium-based ionic liquid electrolytes

AU - Dahiya, P. P.

AU - Patra, Jagabandhu

AU - Chang, Jeng-Kuei

AU - Sahoo, Kirtan

AU - Majumder, S. B.

AU - Basu, S.

PY - 2019/2

Y1 - 2019/2

N2 - In this work, we have compared the electrochemical characteristics of auto combustion synthesized 0.3Li2MnO3–0.7LiMn1.5Ni0.5O4 composite cathode using conventional organic electrolyte and Li+/PMP-TFSI (N-propyl-N-methyl pyrrolidinium-bis(trifluoromethanesulfonyl) imide) ionic liquid (IL) at 25 °C and 60 °C. At 60 °C, IL electrolyte yields superior specific discharge capacity, cycleability, rate performance and voltage fading characteristics of the composite cathode. We have argued that the superiority of IL electrolyte is related to its relatively higher decomposition temperature. The effect of ILs on the cycle induced layered to nickel free spinel phase transformation in the composite cathode is also investigated by post cycling XRD.

AB - In this work, we have compared the electrochemical characteristics of auto combustion synthesized 0.3Li2MnO3–0.7LiMn1.5Ni0.5O4 composite cathode using conventional organic electrolyte and Li+/PMP-TFSI (N-propyl-N-methyl pyrrolidinium-bis(trifluoromethanesulfonyl) imide) ionic liquid (IL) at 25 °C and 60 °C. At 60 °C, IL electrolyte yields superior specific discharge capacity, cycleability, rate performance and voltage fading characteristics of the composite cathode. We have argued that the superiority of IL electrolyte is related to its relatively higher decomposition temperature. The effect of ILs on the cycle induced layered to nickel free spinel phase transformation in the composite cathode is also investigated by post cycling XRD.

KW - Ionic liquid

KW - Li-ion batteries

KW - Lithium manganese rich cathode

UR - http://www.scopus.com/inward/record.url?scp=85050981986&partnerID=8YFLogxK

U2 - 10.1016/j.jtice.2018.06.038

DO - 10.1016/j.jtice.2018.06.038

M3 - Article

AN - SCOPUS:85050981986

SN - 1876-1070

VL - 95

SP - 195

EP - 201

JO - Journal of the Taiwan Institute of Chemical Engineers

JF - Journal of the Taiwan Institute of Chemical Engineers

ER -

Electrochemical characteristics of 0.3Li₂MnO₃–0.7LiMn_1.5Ni_0.5O₄ composite cathode in pyrrolidinium-based ionic liquid electrolytes

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Keywords

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