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    Battery cell contg. lithium negative electrode - using as positive active material soln. of Lewis acid and neutralising cpd.
    4.
    发明专利
    Battery cell contg. lithium negative electrode - using as positive active material soln. of Lewis acid and neutralising cpd. 未知

    公开(公告)号：FR2482371A1

    公开(公告)日：1981-11-13

    申请号：FR8010168

    申请日：1980-05-07

    Applicant: COMP GENERALE ELECTRICITE

    Inventor： BRESSAN JOELLE ,  FEUILLADE GEORGES

    IPC: H01M6/14 ,  H01M4/36

    Abstract: Battery cell comprises a Li negative electrode, a positive active material including a solvent, esp. thionyl chloride and a binary solute consisting of a Lewis acid and an ionic cpd. or salt. Specifically, the Lewis acid is SbCl5, PCl5 or SiCl4. In one preferred embodiment, the Lewis acid is SbCl5 and the ionic cpd. is Li2O or CaO. In another embodiment, the Lewis acid is PCl5 or SiCl4 and the ionic cpd. is LiCl, Li2S, Li2O, LiF, CaO or CaS. The binary solutes are used in a concn. varying from 0.25 mole/l to saturation; the Lewis acid being fully neutralised by ionic cpd. or salt. The tension well exhibited by prior cells of this type is eliminated while the open circuit voltage is increased.

    7.
    发明专利
    未知

    公开(公告)号：DE2334052A1

    公开(公告)日：1974-01-24

    申请号：DE2334052

    申请日：1973-07-04

    Applicant: COMP GENERALE ELECTRICITE

    Inventor： CHENAUX BERNARD ,  FEUILLADE GEORGES

    IPC: H01M6/18 ,  H01M2/16 ,  H01M10/36 ,  H01M43/00

    Abstract: Rechargeable electrochemical device consists of thin, adjacent, solid layers in the following sequence of (I) a catholyte providing animo forming a salt with a Li salt, and (III) a separator consisting of a Li salt and a material with a solid structure, produced by (a) dissolving the Li salt and the org. binder which is polyvinyl formal, (I) in propylene carbonate, (b) impregnating a porous solid layer with the soln, and (c) drying the impregnated layer so that the Li salt remains at least partly solvated by the solvent, and the material with the solid structure is formed by the porous layer and the binder. Combination of (I) and propylene carbonate gives excellent mechanical and electrical props.

    8.
    发明专利
    未知

    公开(公告)号：FR2373885A1

    公开(公告)日：1978-07-07

    申请号：FR7637503

    申请日：1976-12-13

    Applicant: COMP GENERALE ELECTRICITE

    Inventor： DICK RICHARD ,  FEUILLADE GEORGES ,  GADESSAUD ROBERT ,  NICOLAS LOUIS

    IPC: B01D67/00 ,  B01D69/10 ,  B01D71/40 ,  B01D71/48 ,  C08J5/18 ,  C08J9/28 ,  H01M2/16 ,  H01M2/14

    Abstract: The invention relates to a semi-permeable membrane for lead acid batteries. The membrane has a microporous structure comprising a first polymer and a second polymer closely mixed together, the first polymer being poly (2-hydroxyethylmethacrylate), known as reticulated poly HEMA, characterized by the fact that the second polymer comprises one polymer or a mixture of several different polymers chosen from among polyoxyethylene glycol, polyvinylpyrrolidone, polyacrylic acid, polymethacrylic acid, copolymers of acrylic and methacrylic acid, polyacrylates and polymethacrylates of alkyl, and the copolymers of the acrylates and methacrylates of alkyls.

    9.
    发明专利
    未知

    公开(公告)号：CH600597A5

    公开(公告)日：1978-06-30

    申请号：CH553974

    申请日：1974-04-23

    Applicant: COMP GENERALE ELECTRICITE

    Inventor： FEUILLADE GEORGES ,  CHENAUX BERNARD ,  PERCHE PHILIPPE

    IPC: H01M2/16 ,  H01M6/16 ,  H01M6/22 ,  H01M6/18 ,  H01M4/06 ,  H01M4/36

    Abstract: Electrochemical elements in thin layers comprising a stack of thin layers, successively a copper layer, a catholyte, a separator, a lithium layer, the catholyte and the separator being formed by a gel comprising more particularly formal or polyvinylic butyral, reticulated or otherwise and impregnated with a solvent such as propylene carbonate or N-methyl-pyrrolidone saturated with an ionically conductive salt such as ammonium perchlorate. A variant consists in forming the separator with a gel of reticulated polymer basically containing polyvinylidene fluoride and a mineral charge such as magnesia.

    Rechargeable gas electrode - based on PTFE and carbon for use in electrochemical generators
    10.
    发明专利
    Rechargeable gas electrode - based on PTFE and carbon for use in electrochemical generators 未知

    公开(公告)号：FR2346866A1

    公开(公告)日：1977-10-28

    申请号：FR7609622

    申请日：1976-04-02

    Applicant: COMP GENERALE ELECTRICITE

    Inventor： FEUILLADE GEORGES

    IPC: H01M4/86 ,  H01M4/96

    Abstract: A rechargeable gas electrode is produced by (a) mixing an aq. suspension of a hydrophobic agent (esp. PTFE) and carbon powder prepd. by dissocn. of CO, the PTFE and carbon being in the ratio 32.5-48:67.5-52, (b) partly eliminating water by vacuum filtration or evaporation, (c) compressing the mixt. under 40-250 kg/cm2 pressure for 10-100 min. (pref. 250 kg/cm2 for 50 min) in a grill made from an electrically conducting material (e.g. Ni) so that the latter becomes covered with the mixt., and (d) baking at 270-350 degrees C for 30-60 min (pref. 350 degrees C for 30 min). After cooling, the electrode can be directly used in an electrochemical generator, esp. one based on zinc and gas. The electrode is used to consume oxygen and discharge and release it under weak polarisation on charge. The performance of the generator, esp. in relation to voltage and output, depends, other things being equal, on the efficiency of such electrodes. Only dendritic carbon, prepd. by dissocn. of CO in presence of Ni, Fe or Co as catalyst, gives rechargeable electrodes with optimal properties. If such electrodes are subjected to alternate charge and discharge with a current of 10-20 mA/cm2, they generate a potential of 700-800 mV w.r.t the hydrogen electrode which remains constant even after up to 1500 charge-discharge cycles.

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