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Synergistic dual conversion reactions assisting Pb-S electrochemistry for energy storage.

ABSTRACT: SignificanceBased on the analysis of three thermodynamic parameters of various M-S systems (solubility of metal sulfides [M_xS_y] in aqueous solution, volume change of the metal-sulfur [M-S] battery system, and the potential of S/M_xS_y cathode redox couple), an aqueous Pb-S battery operated by synergistic dual conversion reactions (cathode: S⇄PbS, anode: Pb²⁺⇄PbO₂) has been officially reported. Benefitting from the inherent insolubility of PbS and a conversion-type counter electrode, the aqueous Pb-S battery exhibited two advantages: it is shuttle effect free and has a dendrite-free nature. Moreover, the practical value of the Pb-S battery was further certified by the prototype S|Pb(NO₃)₂ǁZn(NO₃)₂|Zn hybrid cell, which afforded an energy density of 930.9 Wh kg^-1_sulfur.

SUBMITTER: Xu C

PROVIDER: S-EPMC8944771 | biostudies-literature | 2022 Mar

REPOSITORIES: biostudies-literature

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Synergistic dual conversion reactions assisting Pb-S electrochemistry for energy storage.

Xu Chiwei C Yang Zhengwei Z Yan Huihui H Li Jing J Yu Haoxiang H Zhang Liyuan L Shu Jie J

Proceedings of the National Academy of Sciences of the United States of America 20220314 12

SignificanceBased on the analysis of three thermodynamic parameters of various M-S systems (solubility of metal sulfides [MxSy] in aqueous solution, volume change of the metal-sulfur [M-S] battery system, and the potential of S/MxSy cathode redox couple), an aqueous Pb-S battery operated by synergistic dual conversion reactions (cathode: S⇄PbS, anode: Pb2+⇄PbO2) has been officially reported. Benefitting from the inherent insolubil ...[more]

PMID: 35286210

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