Effects of Island-Coated PVdF-HFP Composite Separator on the Performance of Commercial Lithium-ion Batteries
Effects of Island-Coated PVdF-HFP Composite Separator on the Performance of Commercial Lithium-ion Batteries
复制标题
岛状涂层PVdF-HFP复合隔膜对商用锂离子电池性能的影响
DOI：
10.3390/coatings8120437
复制
发表时间：
2018-11
期刊：
影响因子：
3.4
通讯作者：
Meitin Yang
中科院分区：
文献类型：
--
作者：
Junhua Zhao;Qin Hu;Jun Wang;Pinjie Zhang;Youliang Zhu;Guoqiang Wu;Yanwen Lv;Liang Lv;Yongjin Zhao;Meitin Yang
高能量密度商用锂离子电池的广泛工业化长期以来一直受到不可控的锂枝晶生长引起的安全性和效率问题的挑战。在这里，岛涂覆的复合隔膜已被制造使用预溶胀过程与水基分散体，以解决枝晶生长的问题。聚合物颗粒表面的预溶胀平衡了高结晶度和电解质相容性之间的矛盾，显示出高的电解质润湿性和电解质吸收能力。此外，点对点的表面结构可以很好地平衡电极的高界面粘附性和抗变形能力，这有利于防止波纹状和罐状变形，平滑电极的固体颗粒形貌，并实现电池中锂扩散的稳定界面结构。这种新的策略构建了一种非连续的新型结构，实现了极大改善的枝晶生长抑制和细胞界面稳定。本论文的研究为开发低成本、工艺简单、易于工业化生产的高质量、高效率的锂离子软包电池开辟了一条新的途径。
The widespread industrialization of high-energy density commercial lithium-ion batteries has long been challenged by issues of safety and efficiency stemming from uncontrollable lithium dendritic growths. Here, an island-coated composite separator has been fabricated using a pre-swelling process with water-based dispersions to address the issue of dendrite growth. The pre-swelling of the polymer particle surface balances the contradiction between the high crystallinity and electrolyte compatibility showing high electrolyte wettability and electrolyte uptake ability. Furthermore, the point-to-point surface structure can balance the high interfacial adhesion of electrodes and anti-deformation ability well, which is beneficial for preventing ripple-shaped and pot-shaped deformation, smoothing the solid particle morphology of the electrode and achieving a steady interfacial structure for lithium diffusion in cells. This new strategy constructs a non-continuous novel structure, achieving greatly improved dendrite growth suppressing and cell interface stabilization. This paper has opened up a new method for the development of low cost, simple process and easy industry of the lithium-ion pouch cell with improved quality and efficiency.
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影响因子：
5
作者：
Wang, Shan;Ajji, Abdellah;Xiong, Chuanxi
通讯作者：
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影响因子：
9.2
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影响因子：
6
作者：
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通讯作者：
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影响因子：
9.2
作者：
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通讯作者：
Arnold, Craig B.
影响因子：
3.9
作者：
L. David;K. M. Shareef;M. Abass;Gurpreet Singh
通讯作者：
L. David;K. M. Shareef;M. Abass;Gurpreet Singh