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

Chiwei Xu | Zendy; Zhengwei Yang | Zendy; Huihui Yan | Zendy; Jing Li | Zendy; Haoxiang Yu | Zendy; Liyuan Zhang | Zendy; Jie Shu | Zendy

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

Author(s) -

Chiwei Xu,

Zhengwei Yang,

Huihui Yan,

Jing Li,

Haoxiang Yu,

Liyuan Zhang,

Jie Shu

Publication year - 2022

Publication title -

proceedings of the national academy of sciences

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 , chemical engineering , inorganic chemistry , 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 .

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