Reference

Selection of quaternary ammonium bromides for use in zinc/bromine cells

Selection of quaternary ammonium bromides for use in zinc/bromine cells. 69227-51-6 is the cas registry number of certain chemical which is used as reagents here. Cathro, K. J.; Cedzynska, K.; Constable, D. C.; Hoobin, P. M. (Inst. Energy Earth Resour., CSIRO, Port Melbourne 3207, Australia). J. Power Sources, 18(4), 349-70 (English) 1986. CODEN: JPSODZ. ISSN: 0378-7753. DOCUMENT TYPE: Journal CA Section: 52 (Electrochemical, Radiational, and Thermal Energy Technology) None of 4 cyclic and 11 alkyl quaternary ammonium bromides (QBr) can be used as an electrolyte in Zn/Br batteries at 0-50° due to the crystn. of polybromide compds. or compds. with the formula ZnBr2.2QBr. However, 1:1 mixts. of N-methyl-N-ethylpyrrolidinium bromide [69227-51-6] with either dimethylethylpropylammonium bromide [84697-18-7] or N-methyl-N-ethylmorpholinium bromide [65756-41-4] can be used at >10°. These mixts. yield polybromide phases which remain liq. at 0°. The Br transport rates in these cells are given. .

Electrolyte for zinc-bromine storage batteries

Electrolyte for zinc-bromine storage batteries. Ando, Yasuo; Ochiai, Toshihiko; Fujie, Shinichi (Meidensha Electric Mfg. Co., Ltd., Japan). Eur. Pat. Appl. EP 109223 A1 23 May 1984, 31 pp. DESIGNATED STATES: R: DE, FR, GB. (English). (European Patent Organization). CODEN: EPXXDW. CLASS: IC: H01M010-36. APPLICATION: EP 83-306620 31 Oct 1983. PRIORITY: JP 82-191875 2 Nov 1982; JP 82-192520 4 Nov 1982. DOCUMENT TYPE: Patent CA Section: 52 (Electrochemical, Radiational, and Thermal Energy Technology) The growth of dendrites in batteries having a neg. electrolyte contg. ZnBr2 is inhibited by including in the electrolyte a Br complexing agent (methylethylmorpholinium bromide [65756-41-4] or methylethylpyrrolidinium bromide [69227-51-6]) and a dendrite inhibitor which is a quaternary morpholinium, pyridinium, pyrrolidinium, or ammonium salt contg. 31 Me, Bu, decyl, dodecyl, or bezylgroup.Some commonly used reagents like 65756-41-4 is used in this experiment. The electrolyte may optionally also contain bivalent Sn or Pb ions and an elec. cond. improver. Thus, several dendrite inhibitors were tested in a basic mixt. contg. ZnBr2 having 3 methylethylmorpholinium bromide and 0.5M methylethyl pyrrolidinium bromide. A 6-h charging test with 40 mA/cm2 was conducted by using the prepd. electrolyte and carbon black plastic electrodes. Dendrite formation was prevented and smooth electrodeposited surface was formed on the anode. .