Chemistry: electrical current producing apparatus – product – and – Current producing cell – elements – subcombinations and... – Include electrolyte chemically specified and method
Patent
1997-09-24
2000-04-18
Nuzzolillo, Maria
Chemistry: electrical current producing apparatus, product, and
Current producing cell, elements, subcombinations and...
Include electrolyte chemically specified and method
429303, 429309, H01M 1008
Patent
active
060513438
ABSTRACT:
To overcome the drawbacks of a P(VDF-HFP) system gel electrolyte and a cell using the same, a polymer having a vinylidene fluoride copolymer as a backbone and poly-vinylidene fluoride in a side chain featuring good adhesion and exhibiting electro-chemical properties similar to the P(VDF-HFP) system without a crosslinking step is used as a binder for a gel electrolyte or electrode. The invention improves the adhesion of gel electrolyte to a current collector or electrode to reduce internal resistance; develops a polymeric solid electrolyte which is storage stable and capable of continuous lamination of coating layers; and provides an electrode which does not require an extra crosslinking step in assembly procedure, prevents positive and negative electrode materials from stripping off, and experiences a minimal capacitance drop upon repetitive charge/discharge cycles. A lithium secondary cell and an electric double-layer capacitor using the electrode is also described.
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patent: 5571634 (1996-11-01), Gozdz et al.
patent: 5609975 (1997-03-01), Hasegawa et al.
General Chemsitry by Darrell Ebbing, Houghton Mifflin Company, p. G-1, 1996 .
Maruyama Satoshi
Ohe Kazuhide
Suzuki Hisashi
Nuzzolillo Maria
O'Malley J.
TDK Corporation
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