A Highly-Efficient Composite Separator with Strong Ligand Interaction for High-Temperature Lithium-Ion Batteries

Muhammad Waqas; Chao Tan; Weiqiang Lv; Shamshad Ali; Bismark Boateng; Wenjin Chen; Zhaohuan Wei; Chao Feng; Junaid Ahmed; John B. Goodenough; Weidong He

doi:10.1002/celc.201800800

A Highly-Efficient Composite Separator with Strong Ligand Interaction for High-Temperature Lithium-Ion Batteries

Muhammad Waqas
, Chao Tan
, Weiqiang Lv
, Shamshad Ali
, Bismark Boateng
, Wenjin Chen
, Zhaohuan Wei
, Chao Feng
, Junaid Ahmed
, John B. Goodenough
, Weidong He^*

^*Corresponding author for this work

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

47 Scopus citations

Abstract

A PVDF-HFP/colloidal-TiO₂ composite separator is synthesized for high-temperature lithium-ion batteries. Incorporation of colloidal TiO₂ in the PVDF-HFP matrix forms a highly-uniform composite micro-structure with strong adsorption interactions between TiO₂ and PVDF-HFP due to the presence of citric acid. The strong interactions are giving rise to advantageous mechanical robustness, separator/electrode interface and electrolyte uptake. The separator shows remarkable stability upon thermal treatment at 150 °C. With a high ionic conductivity up to 1.57×10⁻³ S cm⁻¹, the LFP/Li cell with PVDF-HFP/colloidal-TiO₂ composite separator delivers charge-discharge capacities of 156.95 mAh g⁻¹ (0.1 C) at room temperature and 120.8 mAh g⁻¹ (0.5 C) after annealing cells at 140 °C for 3 hours with a 99 % capacity retention after 100 cycles. The PVDF-HFP/colloidal-TiO₂ separator demonstrates promising potentials for practical applications in high-temperature environments.

Original language	English
Pages (from-to)	2722-2728
Number of pages	7
Journal	ChemElectroChem
Volume	5
Issue number	19
DOIs	https://doi.org/10.1002/celc.201800800
State	Published - 1 Oct 2018
Externally published	Yes

Bibliographical note

Publisher Copyright:
© 2018 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim

Keywords

Colloids
PVDF-HFP
high-temperature lithium-ion battery
materials science
thermal stability

ASJC Scopus subject areas

Catalysis
Electrochemistry

UN SDGs

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

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10.1002/celc.201800800

Cite this

@article{3116d49210644c35b6ab8736961dc874,

title = "A Highly-Efficient Composite Separator with Strong Ligand Interaction for High-Temperature Lithium-Ion Batteries",

abstract = "A PVDF-HFP/colloidal-TiO2 composite separator is synthesized for high-temperature lithium-ion batteries. Incorporation of colloidal TiO2 in the PVDF-HFP matrix forms a highly-uniform composite micro-structure with strong adsorption interactions between TiO2 and PVDF-HFP due to the presence of citric acid. The strong interactions are giving rise to advantageous mechanical robustness, separator/electrode interface and electrolyte uptake. The separator shows remarkable stability upon thermal treatment at 150 °C. With a high ionic conductivity up to 1.57×10−3 S cm−1, the LFP/Li cell with PVDF-HFP/colloidal-TiO2 composite separator delivers charge-discharge capacities of 156.95 mAh g−1 (0.1 C) at room temperature and 120.8 mAh g−1 (0.5 C) after annealing cells at 140 °C for 3 hours with a 99 \% capacity retention after 100 cycles. The PVDF-HFP/colloidal-TiO2 separator demonstrates promising potentials for practical applications in high-temperature environments.",

keywords = "Colloids, PVDF-HFP, high-temperature lithium-ion battery, materials science, thermal stability",

author = "Muhammad Waqas and Chao Tan and Weiqiang Lv and Shamshad Ali and Bismark Boateng and Wenjin Chen and Zhaohuan Wei and Chao Feng and Junaid Ahmed and Goodenough, \{John B.\} and Weidong He",

note = "Publisher Copyright: {\textcopyright} 2018 Wiley-VCH Verlag GmbH \& Co. KGaA, Weinheim",

year = "2018",

month = oct,

day = "1",

doi = "10.1002/celc.201800800",

language = "English",

volume = "5",

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journal = "ChemElectroChem",

issn = "2196-0216",

publisher = "John Wiley and Sons Ltd",

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}

TY - JOUR

T1 - A Highly-Efficient Composite Separator with Strong Ligand Interaction for High-Temperature Lithium-Ion Batteries

AU - Waqas, Muhammad

AU - Tan, Chao

AU - Lv, Weiqiang

AU - Ali, Shamshad

AU - Boateng, Bismark

AU - Chen, Wenjin

AU - Wei, Zhaohuan

AU - Feng, Chao

AU - Ahmed, Junaid

AU - Goodenough, John B.

AU - He, Weidong

PY - 2018/10/1

Y1 - 2018/10/1

N2 - A PVDF-HFP/colloidal-TiO2 composite separator is synthesized for high-temperature lithium-ion batteries. Incorporation of colloidal TiO2 in the PVDF-HFP matrix forms a highly-uniform composite micro-structure with strong adsorption interactions between TiO2 and PVDF-HFP due to the presence of citric acid. The strong interactions are giving rise to advantageous mechanical robustness, separator/electrode interface and electrolyte uptake. The separator shows remarkable stability upon thermal treatment at 150 °C. With a high ionic conductivity up to 1.57×10−3 S cm−1, the LFP/Li cell with PVDF-HFP/colloidal-TiO2 composite separator delivers charge-discharge capacities of 156.95 mAh g−1 (0.1 C) at room temperature and 120.8 mAh g−1 (0.5 C) after annealing cells at 140 °C for 3 hours with a 99 % capacity retention after 100 cycles. The PVDF-HFP/colloidal-TiO2 separator demonstrates promising potentials for practical applications in high-temperature environments.

AB - A PVDF-HFP/colloidal-TiO2 composite separator is synthesized for high-temperature lithium-ion batteries. Incorporation of colloidal TiO2 in the PVDF-HFP matrix forms a highly-uniform composite micro-structure with strong adsorption interactions between TiO2 and PVDF-HFP due to the presence of citric acid. The strong interactions are giving rise to advantageous mechanical robustness, separator/electrode interface and electrolyte uptake. The separator shows remarkable stability upon thermal treatment at 150 °C. With a high ionic conductivity up to 1.57×10−3 S cm−1, the LFP/Li cell with PVDF-HFP/colloidal-TiO2 composite separator delivers charge-discharge capacities of 156.95 mAh g−1 (0.1 C) at room temperature and 120.8 mAh g−1 (0.5 C) after annealing cells at 140 °C for 3 hours with a 99 % capacity retention after 100 cycles. The PVDF-HFP/colloidal-TiO2 separator demonstrates promising potentials for practical applications in high-temperature environments.

KW - Colloids

KW - PVDF-HFP

KW - high-temperature lithium-ion battery

KW - materials science

KW - thermal stability

UR - https://www.scopus.com/pages/publications/85054153295

U2 - 10.1002/celc.201800800

DO - 10.1002/celc.201800800

M3 - Article

AN - SCOPUS:85054153295

SN - 2196-0216

VL - 5

SP - 2722

EP - 2728

JO - ChemElectroChem

JF - ChemElectroChem

IS - 19

ER -

A Highly-Efficient Composite Separator with Strong Ligand Interaction for High-Temperature Lithium-Ion Batteries

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

UN SDGs

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