TY - JOUR
T1 - Facile Synthesis of Binder-Free Three-Dimensional CuxS Nanoflowers for Lithium Batteries
AU - Adylkhanova, Assyl
AU - Nurpeissova, Arailym
AU - Adair, Desmond
AU - Bakenov, Zhumabay
AU - Taniguchi, Izumi
AU - Kalimuldina, Gulnur
N1 - Funding Information:
Funding. This work was supported by the research grant 091019CRP2114 ?Three-Dimensional All Solid State Rechargeable Batteries,? 240919FD3914 ?Self-Charging Rechargeable Lithium-ion Battery? from Nazarbayev University and AP05133706 ?Innovative high-capacity anodes based on lithium titanate for a next generation of batteries?, AP08052143 ?Development of wearable self-charging power unit? from the Ministry of Education and Science of the Republic of Kazakhstan.
PY - 2020/7/16
Y1 - 2020/7/16
N2 - Copper sulfides (CuxS) with different stoichiometry are considered as prospective cathode materials for lithium batteries owing to their large energy storage capability. In this work, three-dimensional CuxS cathodes were synthesized via introducing commercially available copper foam into the solution of dimethyl sulfoxide (DMSO) and sulfur powder. The synthesis procedures were straightforward and ultrafast and did not require additional reagents, high temperature, or long processing time and can be considered as a facile one-step method. Copper sulfide materials with different stoichiometry (x = 1.8, 1.96) were obtained by changing the temperature and the residence time of the copper foam in the DMSO solution. The effects of the temperature and time on phase and morphology of CuxS were characterized by X-ray diffraction and scanning electron microscopy coupled with energy dispersive X-ray spectroscopy. Electrochemical tests resulted in a stable cyclability of Cu1.8S cathode with 100% Coulombic efficiency and capacity of approximately 250 mAh g–1.
AB - Copper sulfides (CuxS) with different stoichiometry are considered as prospective cathode materials for lithium batteries owing to their large energy storage capability. In this work, three-dimensional CuxS cathodes were synthesized via introducing commercially available copper foam into the solution of dimethyl sulfoxide (DMSO) and sulfur powder. The synthesis procedures were straightforward and ultrafast and did not require additional reagents, high temperature, or long processing time and can be considered as a facile one-step method. Copper sulfide materials with different stoichiometry (x = 1.8, 1.96) were obtained by changing the temperature and the residence time of the copper foam in the DMSO solution. The effects of the temperature and time on phase and morphology of CuxS were characterized by X-ray diffraction and scanning electron microscopy coupled with energy dispersive X-ray spectroscopy. Electrochemical tests resulted in a stable cyclability of Cu1.8S cathode with 100% Coulombic efficiency and capacity of approximately 250 mAh g–1.
KW - copper foam
KW - copper sulfide
KW - lithium-ion batteries
KW - one-step method
KW - sulfur
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U2 - 10.3389/fenrg.2020.00154
DO - 10.3389/fenrg.2020.00154
M3 - Article
AN - SCOPUS:85088831471
VL - 8
JO - Frontiers in Energy Research
JF - Frontiers in Energy Research
SN - 2296-598X
M1 - 154
ER -