Preparation and discharge characteristics of solid redox polymerization electrodes employing disulfide polymers and copolymers

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Recent work in our laboratory on polymeric organodisulfides has shown these materials to perform well as positive electrodes in solid-state batteries. The polymeric materials have been named solid redox polymerization electrodes (SRPE's) due to the reversible polymerization/depolymerization reaction that occurs on charge/discharge of the electrode. The cell radiation for SRPE-based cells can be described for a simple case as, 2n M + (SRS){sub n} = n M{sub 2}SRS, where M is an alkali metal (Li, Na, K) and R is an organic group. In the broader sense SRPE's can have more than two S groups per monomer R unit, and ... continued below

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Lerner, M.M. (Oregon State Univ., Corvallis, OR (United States). Dept. of Chemistry); Visco, S.J.; Doeff, M.M.; Dejonghe, L.C. (Lawrence Berkeley Lab., CA (United States)) & Ue, M. (Mitsubishi Petrochemical Co. Ltd., Tokyo (Japan)) January 1, 1991.

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Recent work in our laboratory on polymeric organodisulfides has shown these materials to perform well as positive electrodes in solid-state batteries. The polymeric materials have been named solid redox polymerization electrodes (SRPE's) due to the reversible polymerization/depolymerization reaction that occurs on charge/discharge of the electrode. The cell radiation for SRPE-based cells can be described for a simple case as, 2n M + (SRS){sub n} = n M{sub 2}SRS, where M is an alkali metal (Li, Na, K) and R is an organic group. In the broader sense SRPE's can have more than two S groups per monomer R unit, and are reversible to other monovalent and divalent metals. In the fully charged state SRPE's consist of polydisulfide polymers and are depolymerized on discharge by scission of sulfur-sulfur bonds, leading to the formation of dithiolate salts in the fully discharged cell. SRPE's are easy to synthesize, are air stable, and should be very inexpensive in bulk quantities. Depending on the redox potential of the polydisulfide and reaction condition, many disulfides can be copolymerized by oxidizing a mixture of dithiols, x HSRSH + y HSR'SH + (x+y)l{sub 2} = (SRS){sub x}(Sr'S){sub y} + 2(x+y) Hl, allowing modification of the physical and/or redox properties of the SRPE's. A series of simple aliphatic dithiols including (HSCH{sub 2}CH{sub 2}SH), (HSCH{sub 2}CH{sub 2}OCH{sub 2}CH{sub 2}SH), and (HSCH{sub 2}CH{sub 2}SCH{sub 2}CH{sub 2}SH) have been oxidized to polydisulfides and mixtures of the dithiols have been copolymerized. All of the resulting polymers and copolymers were evaluated in solid-state lithium cells, with some of the new materials demonstrating high levels of performance. The utilization of available capacity in the positive electrode was observed to be independent of electrode thickness for a number of SRPE's of loading levels up to 45% by weight. 8 refs., 5 figs. 2 tabs.

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Pages: (13 p)

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OSTI; NTIS; GPO Dep.

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  • Fall meeting of the Materials Research Society (MRS), Boston, MA (United States), 24 Nov - 1 Dec 1990

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  • Other: DE92000897
  • Report No.: LBL-30100
  • Report No.: CONF-901105--131
  • Grant Number: AC03-76SF00098
  • Office of Scientific & Technical Information Report Number: 6206116
  • Archival Resource Key: ark:/67531/metadc1113981

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  • January 1, 1991

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  • Feb. 22, 2018, 7:45 p.m.

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Lerner, M.M. (Oregon State Univ., Corvallis, OR (United States). Dept. of Chemistry); Visco, S.J.; Doeff, M.M.; Dejonghe, L.C. (Lawrence Berkeley Lab., CA (United States)) & Ue, M. (Mitsubishi Petrochemical Co. Ltd., Tokyo (Japan)). Preparation and discharge characteristics of solid redox polymerization electrodes employing disulfide polymers and copolymers, article, January 1, 1991; United States. (https://digital.library.unt.edu/ark:/67531/metadc1113981/: accessed March 20, 2019), University of North Texas Libraries, Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.