Reference

Battery having an electrode made of a polymeric compound with conjugated double bonds

Battery having an electrode made of a polymeric compound with conjugated double bonds. Shishikura, Toshikazu; Konuma, Hiroshi; Nakamura, Hidenori; Kobayashi, Yukio (Showa Denko K. K. ; Hitachi, Ltd. , Japan). Eur. Pat. Appl. EP 124875 A1 14 Nov 1984, 49 pp. DESIGNATED STATES: R: BE, CH, DE, FR, GB, IT, LI, NL. (English). (European Patent Organization). CODEN: EPXXDW. CLASS: IC: H01M010-40; H01M004-60. APPLICATION: EP 84-104970 3 May 1984. PRIORITY: JP 83-77509 4 May 1983; JP 83-77510 4 May 1983. DOCUMENT TYPE: Patent CA Section: 52 (Electrochemical, Radiational, and Thermal Energy Technology) Section cross-reference(s): 38, 72 A battery has 31 title electrode and an electrolyte whose org. solvent is selected from RCN or I, where R is a C2-7 alkyl, a satd. alicyclic C3-7 hydrocarbon group, Me(CH2)xO(CH2)y, or NC(CH2)z; R1 is (CH2)pCN, O(CH2)qCN, or R3N(CH2)rCN; R2 is a C1-5 alkyl, C1-5 alkoxy, or (CH2)lCN; R3 is a C1-5 alkyl; x, y, z, p, q, and r are 0 or a pos. integer ￡5; n and l are 0 or a pos. integer ￡3; and m is a pos. integer ￡3. Thus, a battery prepd. from MePh-swollen polyacetylene [25067-58-7] electrodes and M Bu4NBF4 in valeronitrile [110-59-8] electrolyte was charged at 2 mA/cm2 for 15 min and discharged at 2 mA/cm2 to cutoff voltage of 1 V. In repeated charging-discharging test, the voltage characteristics of the battery at the 200th discharging were substantially the same as those at the 2nd and 3rd discharging. When the battery was allowed to stand in the charged state for 48 h the self-discharge rate was 5%. In similar tests with a comparison battery having THF instead of valeronitrile electrolyte solvent, charging became impossible after the 21st cycle and the self-discharge rate was 28%.

Conjugated polymers

Conjugated polymers. VII. Polymerization of aliphatic nitriles. Jiang, Zhiqin; Liu, Guoyu; Yin, Guihua; Liu, Yucheng (Dep. Chem., Lanzhou Univ., Lanzhou, Peop. Rep. China). Gaofenzi Tongxun, (5), 380-4 (Chinese) 1984. CODEN: KFTTAR. ISSN: 0453-2880. DOCUMENT TYPE: Journal CA Section: 35 (Chemistry of Synthetic High Polymers) Section cross-reference(s): 76 The polymn. of acetonitrile [75-05-8], propionitrile [107-12-0], n-valeronitrile [110-59-8], n-heptanenitrile [629-08-3], and phenylacetonitrile [140-29-4] was studied in the presence of Friedel-Crafts reagents. The polymn. ability of these nitriles decreased with increasing aliph. chain-length. The complexes of nitriles with metal halides, such as BF3, TiCl4, etc., play an important role in the polymn. mechanism. The semicond. and heat resistance of polynitriles were detd.