scholarly journals Synthesis of Sodium Cobalt Fluoride/Reduced Graphene Oxide (NaCoF3/rGO) Nanocomposites and Investigation of Their Electrochemical Properties as Cathodes for Li-Ion Batteries

Materials ◽  
2021 ◽  
Vol 14 (3) ◽  
pp. 547
Author(s):  
Jiwoong Oh ◽  
Jooyoung Jang ◽  
Eunho Lim ◽  
Changshin Jo ◽  
Jinyoung Chun
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Close Contact ◽  
Specific Capacity ◽  
Reversible Capacity ◽  
Li Ion Batteries ◽  
One Pot ◽  
Reduced Graphene ◽  
Li Ion ◽  
Cobalt Fluoride

In this study, sodium cobalt fluoride (NaCoF3)/reduced graphene oxide (NCF/rGO) nanocomposites were fabricated through a simple one-pot solvothermal process and their electrochemical performance as cathodes for Li-ion batteries (LIBs) was investigated. The NCF nanoclusters (NCs) on the composites (300–500 nm in size) were formed by the assembly of primary nanoparticles (~20 nm), which were then incorporated on the surface of rGO. This morphology provided NCF NCs with a large surface area for efficient ion diffusion and also allowed for close contact with the conductive matrix to promote rapid electron transfer. As a cathode for LIBs, the NCF/rGO electrode achieved a high reversible capacity of 465 mAh·g−1 at 20 mA·g−1 via the conversion reaction, and this enhancement represented more than five times the reversible capacity of the bare NCF electrode. Additionally, the NCF/rGO electrode exhibited both better specific capacity and cyclability within the current density testing range (from 20 to 200 mA·g−1), compared with those of the bare NCF electrode.

scholarly journals Reduced Graphene Oxides Decorated NiSe Nanoparticles as High Performance Electrodes for Na/Li Storage

Materials ◽  
2019 ◽  
Vol 12 (22) ◽  
pp. 3709 ◽  
Author(s):  
Yan Liu ◽  
Xianshui Wang
Keyword(s):  
Electrochemical Performance ◽  
High Performance ◽  
Specific Capacity ◽  
Reversible Capacity ◽  
Graphene Oxides ◽  
One Pot ◽  
Reduced Graphene ◽  
Li Ion ◽  
Enhanced Electrochemical Performance ◽  
Li Storage

A facile, one-pot hydrothermal method was used to synthesize Nickel selenide (NiSe) nanoparticles decorated with reduced graphene oxide nanosheets (rGO), denoted as NiSe/rGO. The NiSe/rGO exhibits good electrochemical performance when tested as anodes for Na-ion batteries (SIBs) and Li-ion batteries (LIBs). An initial reversible capacity of 423 mA h g−1 is achieved for SIBs with excellent cyclability (378 mA h g−1 for 50th cycle at 0.05 A g−1). As anode for LIBs, it delivers a remarkable reversible specific capacity of 1125 mA h g−1 at 0.05 A g−1. The enhanced electrochemical performance of NiSe/rGO nanocomposites can be ascribed to the synergic effects between NiSe nanoparticles and rGO, which provide high conductivity and large specific surface area, indicating NiSe/rGO as very promising Na/Li storage materials.

SiO2-assisted synthesis of layered MoS2/reduced graphene oxide intercalation composites as high performance anode materials for Li-ion batteries

RSC Advances ◽  
2016 ◽  
Vol 6 (78) ◽  
pp. 74436-74444 ◽  
Author(s):  
Nguyen Tronganh ◽  
Yaqing Yang ◽  
Fang Chen ◽  
Mengna Lu ◽  
Yong Jiang ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Hydrothermal Method ◽  
Reduced Graphene Oxide ◽  
Anode Materials ◽  
High Performance ◽  
Li Ion Batteries ◽  
Reduced Graphene ◽  
Li Ion ◽  
Layered Mos2

Layered MoS2/reduced graphene oxide (MoS2/rGO) intercalation composites are synthesized via a SiO2-assisted hydrothermal method.

scholarly journals Evolution of Reduced Graphene Oxide–SnS2 Hybrid Nanoparticle Electrodes in Li-Ion Batteries

2017 ◽  
Vol 121 (24) ◽  
pp. 13018-13024 ◽  
Author(s):  
Mohammad H. Modarres ◽  
Jonathan Hua-Wei Lim ◽  
Chandramohan George ◽  
Michael De Volder
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Li Ion Batteries ◽  
Reduced Graphene ◽  
Li Ion ◽  
Hybrid Nanoparticle

Electrospun hollow glassy carbon–reduced graphene oxide nanofibers with encapsulated ZnO nanoparticles: a free standing anode for Li-ion batteries

2015 ◽  
Vol 3 (10) ◽  
pp. 5344-5351 ◽  
Author(s):  
Shilpa Shilpa ◽  
Basavanakote M. Basavaraja ◽  
Subhasish B. Majumder ◽  
Ashutosh Sharma
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Glassy Carbon ◽  
Zno Nanoparticles ◽  
Composite Nanofibers ◽  
Li Ion Batteries ◽  
Hollow Core ◽  
Free Standing ◽  
Reduced Graphene ◽  
Li Ion

In this paper, a novel anode architecture for Li-ion batteries fabricated by encapsulation of ZnO nanoparticles in the hollow core of glassy carbon–reduced graphene oxide electrospun composite nanofibers, is described.

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