High-performance nano-TiO2@polyvinylidene fluoride composite separators prepared by electrospinning for safe lithium-ion battery
Datuan Li
College of Material Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing, China
Contribution: Writing - original draft (supporting), Writing - review & editing (supporting)
Search for more papers by this authorXingxu Gao
College of Material Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing, China
Contribution: Data curation (supporting), Formal analysis (supporting), Investigation (supporting), Methodology (supporting)
Search for more papers by this authorMin Cao
College of Material Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing, China
Contribution: Validation (equal), Visualization (equal)
Search for more papers by this authorLei Sheng
College of Material Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing, China
Contribution: Methodology (equal), Supervision (equal), Validation (equal), Writing - review & editing (equal)
Search for more papers by this authorLing Yang
College of Material Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing, China
Contribution: Validation (equal), Visualization (equal)
Search for more papers by this authorXin Xie
College of Material Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing, China
Contribution: Validation (equal), Visualization (equal)
Search for more papers by this authorYun Gong
College of Material Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing, China
Contribution: Resources (equal), Visualization (equal)
Search for more papers by this authorQingyang Hu
College of Material Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing, China
Contribution: Data curation (equal), Visualization (equal)
Search for more papers by this authorQiangqiang Xie
College of Material Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing, China
Contribution: Software (supporting)
Search for more papers by this authorTao Wang
College of Material Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing, China
Contribution: Methodology (equal), Validation (equal)
Search for more papers by this authorCorresponding Author
Jianping He
College of Material Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing, China
Correspondence
Jianping He and Xianli Huang, College of Material Science and Technology, Nanjing University of Aeronautics and Astronautics, 210016 Nanjing, Jiangsu Province, China.
Email: [email protected] and [email protected]
Contribution: Conceptualization (equal), Data curation (supporting), Methodology (equal), Validation (supporting), Writing - review & editing (equal)
Search for more papers by this authorCorresponding Author
Xianli Huang
College of Material Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing, China
Correspondence
Jianping He and Xianli Huang, College of Material Science and Technology, Nanjing University of Aeronautics and Astronautics, 210016 Nanjing, Jiangsu Province, China.
Email: [email protected] and [email protected]
Contribution: Supervision (equal), Validation (equal), Visualization (equal)
Search for more papers by this authorDatuan Li
College of Material Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing, China
Contribution: Writing - original draft (supporting), Writing - review & editing (supporting)
Search for more papers by this authorXingxu Gao
College of Material Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing, China
Contribution: Data curation (supporting), Formal analysis (supporting), Investigation (supporting), Methodology (supporting)
Search for more papers by this authorMin Cao
College of Material Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing, China
Contribution: Validation (equal), Visualization (equal)
Search for more papers by this authorLei Sheng
College of Material Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing, China
Contribution: Methodology (equal), Supervision (equal), Validation (equal), Writing - review & editing (equal)
Search for more papers by this authorLing Yang
College of Material Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing, China
Contribution: Validation (equal), Visualization (equal)
Search for more papers by this authorXin Xie
College of Material Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing, China
Contribution: Validation (equal), Visualization (equal)
Search for more papers by this authorYun Gong
College of Material Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing, China
Contribution: Resources (equal), Visualization (equal)
Search for more papers by this authorQingyang Hu
College of Material Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing, China
Contribution: Data curation (equal), Visualization (equal)
Search for more papers by this authorQiangqiang Xie
College of Material Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing, China
Contribution: Software (supporting)
Search for more papers by this authorTao Wang
College of Material Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing, China
Contribution: Methodology (equal), Validation (equal)
Search for more papers by this authorCorresponding Author
Jianping He
College of Material Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing, China
Correspondence
Jianping He and Xianli Huang, College of Material Science and Technology, Nanjing University of Aeronautics and Astronautics, 210016 Nanjing, Jiangsu Province, China.
Email: [email protected] and [email protected]
Contribution: Conceptualization (equal), Data curation (supporting), Methodology (equal), Validation (supporting), Writing - review & editing (equal)
Search for more papers by this authorCorresponding Author
Xianli Huang
College of Material Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing, China
Correspondence
Jianping He and Xianli Huang, College of Material Science and Technology, Nanjing University of Aeronautics and Astronautics, 210016 Nanjing, Jiangsu Province, China.
Email: [email protected] and [email protected]
Contribution: Supervision (equal), Validation (equal), Visualization (equal)
Search for more papers by this authorFunding information: Priority Academic Program Development of Jiangsu Higher Education Institutions; Fundamental Research Funds for the Central Universities, Grant/Award Number: NE2018104; National Natural Science Foundation of China, Grant/Award Number: 11575084
Abstract
Traditional polyolefin separators cannot guarantee safety for lithium-ion batteries at high temperature due to their low melting point, especially for high power discharge. Therefore, it is imperative to develop separators with excellent thermal stability. In this paper, we have prepared TiO2 modified PVDF composite separators by electrospinning. When compared with commercial PE separators, this kind of composite separators show superior thermal stability at 160°C. In addition, it is found that the 0.5-TiO2@PVDF separator exhibits excellent flame retardant and optimal tension strength. Meanwhile, the 0.5-TiO2@PVDF separator exhibits ideal liquid electrolyte storage capacity, which improves the ionic conductivity (0.68 mS cm−1). As a result, the LiCoO2||Li cells with 0.5-TiO2@PVDF separator have high discharge capacity retention rate at a current density of 1 C (300 cycles) and excellent rate performance (1.75 mAh at 5 C). In short, nano-TiO2 modified PVDF separator has a great application prospect in high-performance and high-safety lithium-ion batteries.
CONFLICT OF INTEREST
The authors declare no competing financial interest.
Open Research
DATA AVAILABILITY STATEMENT
Research data are not shared.
Supporting Information
| Filename | Description |
|---|---|
| app53618-sup-0001-Figures.docxWord 2007 document , 310.5 KB | FIGURE S1. SEM and EDS mapping spectra of 0.5-TiO2@PVDF separator. FIGURE S2. Electrochemical stabilization window for different PVDF separators. FIGURE S3. Constant current charge–discharge at 2 mA cm−2 |
Please note: The publisher is not responsible for the content or functionality of any supporting information supplied by the authors. Any queries (other than missing content) should be directed to the corresponding author for the article.
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