TY - JOUR
T1 - Synthesis of high volumetric capacity graphene oxide-supported tellurantimony Na- and Li-ion battery anodes by hydrogen peroxide sol gel processing
AU - Grishanov, Dmitry A.
AU - Mikhaylov, Alexey A.
AU - Medvedev, Alexander G.
AU - Gun, Jenny
AU - Nagasubramanian, Arun
AU - Madhavi, Srinivasan
AU - Lev, Ovadia
AU - Prikhodchenko, Petr V.
N1 - Publisher Copyright:
© 2017
PY - 2018/2/15
Y1 - 2018/2/15
N2 - High-charge-capacity sodium-ion battery anodes made of Sb2Te3@reduced graphene oxide are reported for the first time. Uniform nano-coating of graphene oxide is carried out from common sol of peroxotellurate and peroxoantimonate under room temperature processing. Reduction by hydrazine under glycerol reflux yields Sb2Te3@reduced graphene oxide. The electrodes exhibit exceptionally high volumetric charge capacity, above 2300 mAh cm−3 at 100 mA g−1 current density, showing very good rate capabilities and retaining 60% of this capacity even at 2000 mA g−1. A comparison of sodiation and lithiation shows that lithiation exhibits better volumetric charge capacity, but surprisingly only marginally better relative rate capability retention at 2000 mA g−1. Tellurium-based electrodes are attractive due to the high volumetric charge capacity of Te, its very high electric conductivity, and the low relative expansion upon lithiation/sodiation.
AB - High-charge-capacity sodium-ion battery anodes made of Sb2Te3@reduced graphene oxide are reported for the first time. Uniform nano-coating of graphene oxide is carried out from common sol of peroxotellurate and peroxoantimonate under room temperature processing. Reduction by hydrazine under glycerol reflux yields Sb2Te3@reduced graphene oxide. The electrodes exhibit exceptionally high volumetric charge capacity, above 2300 mAh cm−3 at 100 mA g−1 current density, showing very good rate capabilities and retaining 60% of this capacity even at 2000 mA g−1. A comparison of sodiation and lithiation shows that lithiation exhibits better volumetric charge capacity, but surprisingly only marginally better relative rate capability retention at 2000 mA g−1. Tellurium-based electrodes are attractive due to the high volumetric charge capacity of Te, its very high electric conductivity, and the low relative expansion upon lithiation/sodiation.
KW - Antimony
KW - Batteries
KW - Hydrogen peroxide
KW - Sodium
KW - Sol gel
KW - Telluride
UR - http://www.scopus.com/inward/record.url?scp=85032858810&partnerID=8YFLogxK
U2 - 10.1016/j.jcis.2017.10.040
DO - 10.1016/j.jcis.2017.10.040
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C2 - 29059549
AN - SCOPUS:85032858810
SN - 0021-9797
VL - 512
SP - 165
EP - 171
JO - Journal of Colloid and Interface Science
JF - Journal of Colloid and Interface Science
ER -