Accession Number : AD0633957

Title :   CHEMOELECTRIC ENERGY CONVERSION FOR NONAQUEOUS RESERVE BATTERIES.

Descriptive Note : Quarterly rept. no. 11, Jan-Mar 66,

Corporate Author : NAVAL ORDNANCE LAB CORONA CALIF

Personal Author(s) : Panzer,R. E. ; McWilliams,G. E. ; Harris,W. S.

Report Date : 15 APR 1966

Pagination or Media Count : 20

Abstract : Although cyanamide may be useful as an acid for organic nitro compounds in a voltaic cell, the advantages sought are insufficient to warrant further effort at this time. Metal nitride reference electrodes were tested in hardware-cell assemblies, but no suitable electrolyte separator has yet been devised to permit reproducible and stable operation. A study was begun of limiting potentials for redox reactions in NH3 electrolytes on various electronically conducting substrates (cathectors), such as Pt, Ag, Ni, stainless steel, and pyrolytic graphite. Tests also began on several types of porous conductive cathector matrices. Study began on soluble fuel-cell reactants, such as solutions of sulfur and organic nitro compounds in anhydrous ammonia. A Li-S fuel cell could be made with both electrode reactants in solution. This cell has a high theoretical enersity of 11 J/mg, as compared with 12 J/mg for the H2-O2 fuel-cell couple (both exceed 1000 Wh/1b). Preliminary coulometric reduction of S in concentrated NaSCN-NH3 solution showed the expected two-electron total reaction occurred at low rate. Cyclic voltammetric measurements of reduction potentials of S solutions on Hg or Pt surface have been satisfactory, because of interfering reactions. (Author)

Descriptors :   (*GUIDED MISSILE BATTERIES, ELECTROCHEMISTRY), (*WET CELLS, ELECTROCHEMISTRY), (*STORAGE BATTERIES, ELECTROCHEMISTRY), BATTERY COMPONENTS, ELECTRIC BATTERIES, ELECTRODES, NITRIDES, CYANIDES, AMIDES, ORGANIC NITROGEN COMPOUNDS, AMMONIA, BATTERY SEPARATORS, OXIDATION REDUCTION REACTIONS, FUEL CELLS, SULFUR, SOLUTIONS(MIXTURES), LITHIUM, CATHODES(ELECTROLYTIC CELL), CONDUCTIVITY, CHLORIDES, AMMONIUM COMPOUNDS, THIOCYANATES

Subject Categories : Electrochemical Energy Storage
      Guided Missiles

Distribution Statement : APPROVED FOR PUBLIC RELEASE