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Lithium Molybdate (Li 2 MoO 3 )−Sulfur Battery
Author(s) -
Dharmasena Ruchira R.,
MartinezGarcia Alejandro,
Atla Veerendra,
Akram Muhammad Z.,
Sumanasekera Gamini U.,
Sunkara Mahendra K.
Publication year - 2020
Publication title -
batteries and supercaps
Language(s) - English
Resource type - Journals
ISSN - 2566-6223
DOI - 10.1002/batt.201900176
Subject(s) - anode , molybdate , electrochemistry , cathode , sulfur , materials science , lithium (medication) , lithium–sulfur battery , inorganic chemistry , battery (electricity) , mesoporous material , chemical engineering , chemistry , electrode , metallurgy , catalysis , organic chemistry , medicine , power (physics) , physics , quantum mechanics , engineering , endocrinology
Here, we present a lithiated molybdate‐sulfur battery with practical energy density greater than 300 Wh kg −1 . Electrochemically pre‐lithiated α‐MoO 3 is prepared to form lithium molybdate anode which was tested against mesoporous titania coated sulfur cathode. A pouch cell with a capacity of 5 mAh made using pre‐lithiated lithium molybdate nanowires as anode and mesoporous TiO 2 (titania) coated carbon‐sulfur cathode exhibited 1.4 V operating voltage and exhibited 620 Wh kg −1 capacity in the first cycle, dropped to ∼400 Wh kg −1 in 2 nd cycle and 300 Wh kg −1 at 100 th cycle. Various prelithiation studies indicate that electrochemical lithiation of MoO 3 nanomaterials is crucial to make Li 2 MoO 3 material suitable as anode. In situ electrochemical lithiation of MoO 3 anode is introduced as a method to fabricate lithium molybdate (Li 2 MoO 3 )‐sulfur pouch cells in one step.