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1. A hydrated strontium cobalt oxyhydroxide Ruddlesden–Popper phase as an oxygen electrocatalyst for aqueous lithium–oxygen rechargeable batteries

Author:
Sonoki, Hidetoshi; Mori, Daisuke; Taminato, Sou; Takeda, Yasuo; Yamamoto, Osamu; Imanishi, Nobuyuki
Source:
Chemical communications 2019 v.55 no.52 pp. 7454-7457
ISSN:
1364-548X
Subject:
aqueous solutions; batteries; catalysts; chemical reactions; cobalt; electrochemistry; electrodes; lithium; lithium chloride; oxygen; oxygen production; strontium
Abstract:
... This study investigates oxygen electrocatalytic activities of perovskite-related compounds using a rotating disk electrode technique in an aqueous solution containing lithium chloride and lithium hydroxide. A hydrated oxyhydroxide Ruddelesden–Popper phase, Sr₃Co₂O₅(OH)₂·2H₂O, exhibits excellent performance especially in the oxygen evolution reaction. ...
DOI:
10.1039/c9cc01953g

2. From lithium to sodium: design of heterometallic molecular precursors for the NaMO₂ cathode materials

Author:
Han, Haixiang; Zhou, Zheng; Carozza, Jesse C.; Lengyel, Jeff; Yao, Yuan; Wei, Zheng; Dikarev, Evgeny V.
Source:
Chemical communications 2019 v.55 no.50 pp. 7243-7246
ISSN:
1364-548X
Subject:
batteries; cathodes; chemical reactions; cobalt; iron; lithium; models; nickel; sodium
Abstract:
... Based on the well-established model structure of Li₂M₂(tbaoac)₆, the first series of heterometallic molecular precursors Na₂M₂(tbaoac)₆(THF)₂ (M = Fe, Co, and Ni) have been designed and successfully utilized for the preparation of NaMO₂ oxide cathode materials of sodium-ion batteries. ...
DOI:
10.1039/c9cc02836f