Cycleability of sulfurized polyacrylonitrile cathode in carbonate electrolyte containing lithium metasilicate

Borong Wu; Feibiao Chen; Daobin Mu; Weilin Liao; Feng Wu

doi:10.1016/j.jpowsour.2014.12.031

Cycleability of sulfurized polyacrylonitrile cathode in carbonate electrolyte containing lithium metasilicate

Borong Wu, Feibiao Chen, Daobin Mu^*, Weilin Liao, Feng Wu

^*Corresponding author for this work

School of Material Science and Engineering

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

16 Citations (Scopus)

Abstract

The electrochemical performance of the sulfurized polyacrylonitrile (SPAN)/Li cell affected by the Li₂SiO₃ particles that added between cathode and separator in the assembly process is studied. Fast capacity decay happens to the base SPAN/Li cell without Li₂SiO₃ due to deactivation of sulfur and side reactions etc. However, the decay is obviously mitigated in the presence of Li₂SiO₃. Reversible capacity retention of 79% can be achieved after 100 cycles at 0.5C, while it is less than 10% for its counterpart. XPS and TEM measurements are conducted and the result indicates a positive effect of Li₂SiO₃ on the inhibition of side reactions, because Li₂SiO₃ can hold the dissociated sulfur substances and consume PF₅/HF in the carbonate electrolyte.

Original language	English
Pages (from-to)	27-31
Number of pages	5
Journal	Journal of Power Sources
Volume	278
DOIs	https://doi.org/10.1016/j.jpowsour.2014.12.031
Publication status	Published - 15 Mar 2015

Keywords

Carbonate electrolyte
Cycleability
Lithium metasilicate
Polysulfide
Sulfurized polyacrylonitrile

UN SDGs

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

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10.1016/j.jpowsour.2014.12.031

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title = "Cycleability of sulfurized polyacrylonitrile cathode in carbonate electrolyte containing lithium metasilicate",

abstract = "The electrochemical performance of the sulfurized polyacrylonitrile (SPAN)/Li cell affected by the Li2SiO3 particles that added between cathode and separator in the assembly process is studied. Fast capacity decay happens to the base SPAN/Li cell without Li2SiO3 due to deactivation of sulfur and side reactions etc. However, the decay is obviously mitigated in the presence of Li2SiO3. Reversible capacity retention of 79% can be achieved after 100 cycles at 0.5C, while it is less than 10% for its counterpart. XPS and TEM measurements are conducted and the result indicates a positive effect of Li2SiO3 on the inhibition of side reactions, because Li2SiO3 can hold the dissociated sulfur substances and consume PF5/HF in the carbonate electrolyte.",

keywords = "Carbonate electrolyte, Cycleability, Lithium metasilicate, Polysulfide, Sulfurized polyacrylonitrile",

author = "Borong Wu and Feibiao Chen and Daobin Mu and Weilin Liao and Feng Wu",

year = "2015",

month = mar,

day = "15",

doi = "10.1016/j.jpowsour.2014.12.031",

language = "English",

volume = "278",

pages = "27--31",

journal = "Journal of Power Sources",

issn = "0378-7753",

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TY - JOUR

T1 - Cycleability of sulfurized polyacrylonitrile cathode in carbonate electrolyte containing lithium metasilicate

AU - Wu, Borong

AU - Chen, Feibiao

AU - Mu, Daobin

AU - Liao, Weilin

AU - Wu, Feng

PY - 2015/3/15

Y1 - 2015/3/15

N2 - The electrochemical performance of the sulfurized polyacrylonitrile (SPAN)/Li cell affected by the Li2SiO3 particles that added between cathode and separator in the assembly process is studied. Fast capacity decay happens to the base SPAN/Li cell without Li2SiO3 due to deactivation of sulfur and side reactions etc. However, the decay is obviously mitigated in the presence of Li2SiO3. Reversible capacity retention of 79% can be achieved after 100 cycles at 0.5C, while it is less than 10% for its counterpart. XPS and TEM measurements are conducted and the result indicates a positive effect of Li2SiO3 on the inhibition of side reactions, because Li2SiO3 can hold the dissociated sulfur substances and consume PF5/HF in the carbonate electrolyte.

AB - The electrochemical performance of the sulfurized polyacrylonitrile (SPAN)/Li cell affected by the Li2SiO3 particles that added between cathode and separator in the assembly process is studied. Fast capacity decay happens to the base SPAN/Li cell without Li2SiO3 due to deactivation of sulfur and side reactions etc. However, the decay is obviously mitigated in the presence of Li2SiO3. Reversible capacity retention of 79% can be achieved after 100 cycles at 0.5C, while it is less than 10% for its counterpart. XPS and TEM measurements are conducted and the result indicates a positive effect of Li2SiO3 on the inhibition of side reactions, because Li2SiO3 can hold the dissociated sulfur substances and consume PF5/HF in the carbonate electrolyte.

KW - Carbonate electrolyte

KW - Cycleability

KW - Lithium metasilicate

KW - Polysulfide

KW - Sulfurized polyacrylonitrile

UR - http://www.scopus.com/inward/record.url?scp=84919598605&partnerID=8YFLogxK

U2 - 10.1016/j.jpowsour.2014.12.031

DO - 10.1016/j.jpowsour.2014.12.031

M3 - Article

AN - SCOPUS:84919598605

SN - 0378-7753

VL - 278

SP - 27

EP - 31

JO - Journal of Power Sources

JF - Journal of Power Sources

ER -

Cycleability of sulfurized polyacrylonitrile cathode in carbonate electrolyte containing lithium metasilicate

Abstract

Keywords

UN SDGs

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