Mesoporous reduced graphene oxide/WSe2 composite particles for efficient sodium-ion batteries and hydrogen evolution reactions

2018 ◽  
Vol 459 ◽  
pp. 309-317 ◽  
Author(s):  
Jung Sang Cho ◽  
Seung-Keun Park ◽  
Kyung Min Jeon ◽  
Yuanzhe Piao ◽  
Yun Chan Kang
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Hydrogen Evolution ◽  
Sodium Ion ◽  
Composite Particles ◽  
Sodium Ion Batteries ◽  
Reduced Graphene ◽  
Hydrogen Evolution Reactions

Reduced graphene oxide (RGO) decorated Sb2S3 nanorods as anode material for sodium-ion batteries

2019 ◽  
Vol 716 ◽  
pp. 171-176 ◽  
Author(s):  
Siying Wen ◽  
Jiachang Zhao ◽  
Yu Zhao ◽  
Tingting Xu ◽  
Jingli Xu
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Anode Material ◽  
Sodium Ion ◽  
Sodium Ion Batteries ◽  
Reduced Graphene

scholarly journals Tin-Decorated Reduced Graphene Oxide and NaLi0.2Ni0.25Mn0.75O as Electrode Materials for Sodium-Ion Batteries

Materials ◽  
2019 ◽  
Vol 12 (7) ◽  
pp. 1074 ◽  
Author(s):  
Pier Paolo Prosini ◽  
Maria Carewska ◽  
Cinzia Cento ◽  
Gabriele Tarquini ◽  
Fabio Maroni ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Electrode Materials ◽  
Specific Capacity ◽  
Sodium Ion ◽  
Sodium Ion Batteries ◽  
Organic Precursor ◽  
Functionalized Graphene Oxide ◽  
Sodium Metal ◽  
Reduced Graphene

A tin-decorated reduced graphene oxide, originally developed for lithium-ion batteries, has been investigated as an anode in sodium-ion batteries. The composite has been synthetized through microwave reduction of poly acrylic acid functionalized graphene oxide and a tin oxide organic precursor. The final product morphology reveals a composite in which Sn and SnO2 nanoparticles are homogenously distributed into the reduced graphene oxide matrix. The XRD confirms the initial simultaneous presence of Sn and SnO2 particles. SnRGO electrodes, prepared using Super-P carbon as conducting additive and Pattex PL50 as aqueous binder, were investigated in a sodium metal cell. The Sn-RGO showed a high irreversible first cycle capacity: only 52% of the first cycle discharge capacity was recovered in the following charge cycle. After three cycles, a stable SEI layer was developed and the cell began to work reversibly: the practical reversible capability of the material was 170 mA·h·g−1. Subsequently, a material of formula NaLi0.2Ni0.25Mn0.75O was synthesized by solid-state chemistry. It was found that the cathode showed a high degree of crystallization with hexagonal P2-structure, space group P63/mmc. The material was electrochemically characterized in sodium cell: the discharge-specific capacity increased with cycling, reaching at the end of the fifth cycle a capacity of 82 mA·h·g−1. After testing as a secondary cathode in a sodium metal cell, NaLi0.2Ni0.25Mn0.75O was coupled with SnRGO anode to form a sodium-ion cell. The electrochemical characterization allowed confirmation that the battery was able to reversibly cycle sodium ions. The cell’s power response was evaluated by discharging the SIB at different rates. At the lower discharge rate, the anode capacity approached the rated value (170 mA·h·g−1). By increasing the discharge current, the capacity decreased but the decline was not so pronounced: the anode discharged about 80% of the rated capacity at 1 C rate and more than 50% at 5 C rate.

One-pot solvothermal synthesis of CoNi2S4/reduced graphene oxide (rGO) nanocomposites as anode for sodium-ion batteries

Ionics ◽  
2019 ◽  
Vol 26 (1) ◽  
pp. 213-221 ◽  
Author(s):  
Tingting Xu ◽  
Jiachang Zhao ◽  
Jingxia Yang ◽  
Jiajun Chen ◽  
Yuandong Wu ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Solvothermal Synthesis ◽  
Sodium Ion ◽  
Sodium Ion Batteries ◽  
One Pot ◽  
Reduced Graphene
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