scholarly journals Spinel rGO Wrapped CoV2O4 Nanocomposite as a Novel Anode Material for Sodium-Ion Batteries

Polymers ◽  
2020 ◽  
Vol 12 (3) ◽  
pp. 555
Author(s):  
Rasu Muruganantham ◽  
Jeng-Shin Lu ◽  
Wei-Ren Liu
Keyword(s):  
Graphene Oxide ◽  
Metal Oxides ◽  
Electronic Conductivity ◽  
Rate Capability ◽  
Sodium Ion ◽  
Ex Situ ◽  
Sodium Ion Batteries ◽  
X Ray Diffraction ◽  
Binary Metal Oxides ◽  
High Theoretical Capacity

Binary mixed transition-based metal oxides have some of the most potential as anode materials for rechargeable advanced battery systems due to their high theoretical capacity and tremendous electrochemical performance. Nonetheless, binary metal oxides still endure low electronic conductivity and huge volume expansion during the charge/discharge processes. In this study, we synthesized a reduced graphene oxide (rGO)-wrapped CoV2O4 material as the anode for sodium ion batteries. The X-ray diffraction analyses revealed pure-phased CoV2O4 (CVO) rGO-wrapped CoV2O4 (CVO/rGO) nanoparticles. The capacity retention of the CVO/rGO composite anode demonstrated 81.6% at the current density of 200 mA/g for more than 1000 cycles, which was better than that of the bare one of only 73.5% retention. The as-synthesized CVO/rGO exhibited remarkable cyclic stability and rate capability. The reaction mechanism of the CoV2O4 anode with sodium ions was firstly studied in terms of cyclic voltammetry (CV) and ex situ XRD analyses. These results articulated the manner of utilizing the graphene oxide-coated spinel-based novel anode-CoV2O4 as a potential anode for sodium ion batteries.

Zinc Telluride as Electrochemical Storage Material for High-Performance Sodium-Ion Batteries

2021 ◽  
Vol 21 (7) ◽  
pp. 3835-3841
Author(s):  
Jaewook Ko ◽  
Seongjoon So ◽  
Jaehyun Hur
Keyword(s):  
Electron Microscopy ◽  
High Performance ◽  
Rate Capability ◽  
Zinc Telluride ◽  
High Energy ◽  
Sodium Ion ◽  
Ex Situ ◽  
Mechanochemical Reaction ◽  
Sodium Ion Batteries ◽  
Transfer Resistance

High-energy ball milling (HEBM) is used to synthesize zinc telluride (ZnTe) and amorphous C (ZnTe-C) nanocomposites as novel anode materials for sodium-ion batteries (SIBs). A nanostruc-tured ZnTe-C composite is prepared using Zn, Te, and acetylene black as precursor materials via a facile two-step HEBM process. The initial HEBM of Zn and Te induces the formation of the ZnTe alloy nanostructure via a mechanochemical reaction. The subsequent HEBM process generates the ZnTe composite embedded in amorphous C (ZnTe-C), as confirmed using X-ray diffraction, transmission electron microscopy, and element mapping analyses. When used as SIB anode, the ZnTe-C composite exhibits good cyclic life (specific discharge capacities of 383 mAh g−1 at 0.1 A g−1 over 150 cycles and 373 mAh g−1 at 0.5 A g−1 after 500 cycles) and excellent rate capability (89% capacity retention at 10 A g−1 relative to that at 0.1 A g−1). The impedance analysis and ex situ scanning electron microscopy results reveal that the properties of ZnTe-C are superior to those of ZnTe because C serves as buffering matrix that suppresses the volume changes in ZnTe during alloying/dealloying and reduces the charge transfer resistance. The ZnTe-C nanocomposite in this study is a promising candidate for high-performance SIB anodes.

Graphene oxide templated nitrogen-doped carbon nanosheets with superior rate capability for sodium ion batteries

Carbon ◽  
2017 ◽  
Vol 122 ◽  
pp. 82-91 ◽  
Author(s):  
Zhigao Luo ◽  
Jiang Zhou ◽  
Xinxin Cao ◽  
Sainan Liu ◽  
Yangshen Cai ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Rate Capability ◽  
Sodium Ion ◽  
Sodium Ion Batteries ◽  
Carbon Nanosheets ◽  
Nitrogen Doped ◽  
Nitrogen Doped Carbon

Sb2O3@Sb Nanoparticles Impregnated in N-doped Carbon Microcages for Ultralong Life and High-Rate Sodium Ion Battery

2021 ◽  
Author(s):  
Anding Xu ◽  
Chuyun Huang ◽  
Guilan Li ◽  
Kaixiang Zou ◽  
Hao Sun ◽  
...  
Keyword(s):  
Rate Capability ◽  
Sodium Ion ◽  
High Rate ◽  
Sodium Ion Battery ◽  
Sodium Ion Batteries ◽  
Capacity Fading ◽  
The Poor ◽  
High Theoretical Capacity

Antimony-based materials have been considered as highly competitive anodes for sodium-ion batteries (SIBs) because of their high theoretical capacity. However, the poor rate capability and fast capacity fading originated from...

MoP hollow nanospheres encapsulated in 3D reduced graphene oxide networks as high rate and ultralong cycle performance anodes for sodium-ion batteries

Nanoscale ◽  
2019 ◽  
Vol 11 (15) ◽  
pp. 7129-7134 ◽  
Author(s):  
Yanyou Yin ◽  
Lishuang Fan ◽  
Yu Zhang ◽  
Nannan Liu ◽  
Naiqing Zhang ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Rate Capability ◽  
Sodium Ion ◽  
High Rate ◽  
Cycle Performance ◽  
Sodium Ion Batteries ◽  
Hollow Nanospheres ◽  
Reduced Graphene ◽  
Molybdenum Phosphide ◽  
Superior Cycling Stability

A rationally designed molybdenum phosphide anode material H-MoP@rGO exhibits superior cycling stability and extraordinary rate capability.

scholarly journals Effects of F-Doping on the Electrochemical Performance of Na2Ti3O7 as an Anode for Sodium-Ion Batteries

Materials ◽  
2018 ◽  
Vol 11 (11) ◽  
pp. 2206 ◽  
Author(s):  
Zehua Chen ◽  
Liang Lu ◽  
Yu Gao ◽  
Qixiang Zhang ◽  
Chuanxiang Zhang ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Electrochemical Performance ◽  
Specific Capacity ◽  
Rate Capability ◽  
Cycling Performance ◽  
Sodium Ion ◽  
Sodium Ion Batteries ◽  
Ion Diffusion ◽  
X Ray Diffraction ◽  
Phase Crystal

The effects of fluorine (F) doping on the phase, crystal structure, and electrochemical performance of Na2Ti3O7 are studied by X-ray diffraction (XRD), scanning electron microscopy (SEM), and electrochemical measurements. F-doping does not change the crystal structure of NTO, although it has an effect on the morphology of the resultant product. As an anode material for sodium-ion batteries, the specific capacity of Na2Ti3O7 exhibits a 30% increase with F-doping owing to the improved sodium ion diffusion coefficient. F-doped Na2Ti3O7 also displays an enhanced rate capability and favourable cycling performance for more than 800 cycles.

scholarly journals Effects of Mg doping on the remarkably enhanced electrochemical performance of Na3V2(PO4)3 cathode materials for sodium ion batteries

2015 ◽  
Vol 3 (18) ◽  
pp. 9578-9586 ◽  
Author(s):  
Hui Li ◽  
Xiqian Yu ◽  
Ying Bai ◽  
Feng Wu ◽  
Chuan Wu ◽  
...  
Keyword(s):  
Electrochemical Performance ◽  
Electronic Conductivity ◽  
Rate Capability ◽  
Sodium Ion ◽  
High Rate ◽  
Cycle Performance ◽  
Sodium Ion Batteries ◽  
Mg Doping ◽  
Enhanced Electrochemical Performance ◽  
Mg Doped

Mg doped Na3V2(PO4)3/C displays better electrochemical performance, especially at a high rate. Enhanced rate capability and cycle performance can be attributed to the optimized particle size, structural stability and enhanced ionic and electronic conductivity induced by Mg doping.

Enabling superior rate capability and reliable sodium ion batteries by employing galvanostatic-potentiostatic operation mode

2021 ◽  
Vol 496 ◽  
pp. 229834
Author(s):  
Yi Wan ◽  
Yanling Qiu ◽  
Canpei Wang ◽  
Huamin Zhang ◽  
Qiong Zheng ◽  
...  
Keyword(s):  
Operation Mode ◽  
Rate Capability ◽  
Sodium Ion ◽  
Sodium Ion Batteries
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