Open AccessSynergistic dual conversion reactions assisting Pb-S electrochemistry for energy storage
Author(s) -
Chiwei Xu,
Zhengwei Yang,
Huihui Yan,
Li Jing,
Haoxiang Yu,
Liyuan Zhang,
Jie Shu
Publication year - 2022
Publication title -
proceedings of the national academy of sciences of the united states of america
Language(s) - English
Resource type - Journals
eISSN - 1091-6490
pISSN - 0027-8424
DOI - 10.1073/pnas.2118675119
Subject(s) - battery (electricity) , cathode , anode , aqueous solution , electrochemistry , energy storage , redox , solubility , chemistry , electrode , inorganic chemistry , chemical engineering , metal , materials science , organic chemistry , thermodynamics , power (physics) , physics , engineering
Significance Based on the analysis of three thermodynamic parameters of various M-S systems (solubility of metal sulfides [Mx Sy ] in aqueous solution, volume change of the metal-sulfur [M-S] battery system, and the potential of S/Mx Sy 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 )2 ǁZn(NO3 )2 |Zn hybrid cell, which afforded an energy density of 930.9 Wh kg−1 sulfur .