Preparation method of tin of lithium ion battery and conductive polymer composite cathode material membrane
A conductive polymer and lithium-ion battery technology, applied in battery electrodes, lithium batteries, non-aqueous electrolyte batteries, etc., can solve the problems of cumbersome process and difficult large-scale production, and achieve the effect of firm combination and low density
Active Publication Date: 2014-05-28
威海区域创新中心有限责任公司
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The invention discloses a preparation method of tin of a lithium ion battery and a conductive polymer composite cathode material membrane. According to the invention, the tin of the lithium ion battery and the conducting polymer composite cathode material membrane take graphite paper as a substrate, metallic tin deposited on the surface of the graphite paper is in a granular state, and the conductive polymer nano fiber is dispersed between the metallic tin particles and on the surface of the metallic tin particles. The method comprises the following steps: a)pre-treating the graphite paper; b)depositing metallic tin by constant current; c)preparing conductive polymer electrodeposition; d)performing electrochemical synthesis on the conductive polymer membrane by a constant potential method; and f) preparing the tin of the lithium ion battery and the conductive polymer composite cathode material membrane. According to the invention, conductive polymer is dispersed between the metallic tin particles and on the surface of the metallic tin particles, tin plays a electrochemistry role for storing lithium/removing lithium, a conductive polymer network has the conductive effect, and is capable of simultaneously limiting and buffering the volume change of the tin nano particles during a charge and discharge process, the particle agglomeration is avoided, and the cycle stability of the material can be ensured.
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Property | Measurement | Unit |
Diameter | 0.1 ~ 0.8 | µm |
Thickness | 0.05 ~ 0.3 | mm |
tensile | MPa | |
Particle size | Pa | |
strength | 10 |
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