鋰電池極板製作之分析：混漿與塗佈

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锂电池极板制作之分析：混浆与涂布

A Study on Making the Lithium-ion Battery Electrodes: Mixing and Coating

刘达人 , 博士　　导师：汪上晓　　

繁体中文

锂电池；浆料混合；涂布；乾燥；双层涂布； lithium ion battery ； mixing ； coating ； drying ； two-layered coating

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摘要 │ 参考文献 (103) │ 国际计量

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Lithium ion secondary batteries as energy storage devices have become popular in recent years. Electrodes manufacturing process which involves mixing the slurry, coating and drying directly affect the quality of the battery performance. The thesis is divided into two parts respectively discuss ways to improve this second program compared to traditional methods.
Slurries for anodes and cathodes of lithium batteries contain a large percentage of solid particles of different chemicals, sizes and shapes in highly viscous media. A thorough mixing of these slurries poses a major challenge in the battery manufacturing process. Several types of mixing devices and mixing methods were examined. The conventional turbine stirrers or ball mill mixers could be adequately used for the preparation of anode slurries, but not suitable for cathode slurries. In this study, a newly three-dimensional mixer, in conjunction with a multi-stage mixing sequence were proposed. The mixing effectiveness was examined by means of rheological measurements and flow visualization techniques. Electrical performance results indicated that the battery obtained using the 3-D mixing device with a multi-stage mixing sequence was more efficient to those obtained from conventional methods.
The cathode and anode electrodes in lithium-ion batteries typically contain a significant proportion of particles and binders. During the electrode drying process, the high temperature will lead to the so-called "binder migration" phenomenon. Uneven particle/binder distribution can cause poor adhesion between the coated layer and which will level to the substrate, disruption of conductive paths and decrease the electrode performance. In this study, a two-layered cathode was designed using separate compositions of slurry ingredients in each layer, as produced by means of a simultaneous multilayer coating method. The two-layered cathode with the top layer containing less binder than the bottom layer was found to yield a better particle/binder distribution in the final structure under high temperature drying. The battery made with the two-layered cathode appeared to give a better overall performance.

参考文献 ( 103 ) 〈TOP〉

8. Li J, Daniel C, Wood D (2011) Materials processing for lithium-ion batteries, J Power Sources 196:2452-2460.
连结：
9. Zheng H, Tan L, Liu G, Song XG, Battaglia VS (2012) Calendering effects on the physical and electrochemical properties of Li[Ni1/3Mn1/3Co1/3]O2 Cathode, J Power Sources 208:52-57.
连结：
10. Yoo M, Frank CW, Mori S (2003) Interaction of poly(vinylidene fluoride) with graphite particles. 1. surface morphology of a composite film and its relation to processing parameters, Chem Mater 15:4:850-861.
连结：
12. Cheon SE, Kwon CW, Kim DB, Hong SJ, Kim HT, Kim SW (2000) Effect of binary conductive agents in LiCoO2 cathode on performance of lithium ion polymer battery, Electrochim Acta 46:4:599-605.
连结：
13. Ligneel E, Lestriez B, Guyomard D (2007) Relationships between processing, morphology and discharge capacity of the composite electrode, J Power Sources 174:716-719.
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使用DOI作为永久连结

引用含有DOI的文献

DOI可强化引用精确性、增强学术圈连结，并给予使用者跨平台的良好使用经验，目前在全世界已有超过五千万个对象申请DOI。 如想对DOI的使用与概念有进一步了解，请参考 （ ） 。

DOI可强化引用精确性、增强学术圈连结，并给予使用者跨平台的良好使用经验，目前在全世界已有超过五千万个对象申请DOI。如想对DOI的使用与概念有进一步了解，请参考（）。