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Flower‐like Nitrogen‐co‐doped MoS 2 @RGO Composites with Excellent Stability for Supercapacitors
Author(s) -
Li Min,
Addad Ahmed,
Zhang Yuan,
Barras Alexandre,
Roussel Pascal,
Amin Mohammed A.,
Szunerits Sabine,
Boukherroub Rabah
Publication year - 2021
Publication title -
chemelectrochem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.182
H-Index - 59
ISSN - 2196-0216
DOI - 10.1002/celc.202100401
Subject(s) - supercapacitor , hydrazine (antidepressant) , materials science , capacitance , nitrogen , hydrothermal circulation , graphene , doping , composite material , chemical engineering , nanotechnology , chemistry , electrode , organic chemistry , optoelectronics , chromatography , engineering
Nitrogen‐co‐doped MoS 2 @rGO composites (named hereafter N‐MoS 2 @N‐RGO) are prepared by the hydrothermal method using dicyandiamide or hydrazine monohydrate as the nitrogen source. N‐MoS 2 @rGO is obtained by the hydrothermal reaction of thioacetamide, ammonium molybdate and GO precursors in the presence of dicyandiamide, while N‐MoS 2 @N‐RGO is synthesized using the same precursors in the presence of hydrazine monohydrate as the nitrogen source. On the one hand, N‐MoS 2 @RGO displays excellent performance and good capacitance value of 335 F/g acquired at 0.5A/g and improved stability (∼94% of the original capacitance is preserved after 5000 cycles). On the other hand, compared with N‐MoS 2 @RGO, N‐MoS 2 @N‐RGO possesses a slightly higher capacitance of 340 F/g recorded at 0.5A/g and better cycling stability (∼98% of its original value after 5000 cycles). Taken together, the results of this investigation clearly indicate that the fabricated composites have application prospect in energy storage devices.