scholarly journals Understanding the Li-ion storage mechanism in a carbon composited zinc sulfide electrode

2019 ◽  
Vol 7 (26) ◽  
pp. 15640-15653 ◽  
Author(s):  
Guiying Tian ◽  
Zijian Zhao ◽  
Angelina Sarapulova ◽  
Chittaranjan Das ◽  
Lihua Zhu ◽  
...  
Keyword(s):  
Zinc Sulfide ◽  
Charge Transfer Resistance ◽  
Transfer Resistance ◽  
Storage Mechanism ◽  
Ion Storage ◽  
Li Ion ◽  
Low Charge ◽  
Coated Carbon

The Li+ storage mechanism in a carbon composited zinc sulfide as an enhanced conversion-alloying anode material for Li+ ion batteries is studied by in situ methods. Further, it is found that the (de)lithiation processes are affected by a low charge transfer resistance, and the coated carbon can effectively improve the long-term cycling stability.

An in situ polymerized PEDOT/Fe3O4 composite as a Pt-free counter electrode for highly efficient dye sensitized solar cells

RSC Advances ◽  
2016 ◽  
Vol 6 (2) ◽  
pp. 1637-1643 ◽  
Author(s):  
Min Zheng ◽  
Jinghao Huo ◽  
Yongguang Tu ◽  
Jinbiao Jia ◽  
Jihuai Wu ◽  
...  
Keyword(s):  
Counter Electrode ◽  
Dye Sensitized Solar Cells ◽  
Charge Transfer Resistance ◽  
High Power Conversion Efficiency ◽  
Transfer Resistance ◽  
Dye Sensitized ◽  
Large Active Area ◽  
Low Charge ◽  
Sensitized Solar Cells

PEDOT/Fe3O4 hybrid is in situ polymerized and used as Pt-free counter electrode in dye-sensitized solar cell. Owing to large active area and low charge transfer resistance for the hybrid, the cell achieves a high power conversion efficiency of 8.69%.

Further surface modification by carbon coating for in-situ growth of Fe3O4 nanoparticles on MXene Ti3C2 multilayers for advanced Li-ion storage

2018 ◽  
Vol 289 ◽  
pp. 228-237 ◽  
Author(s):  
Fanyu Kong ◽  
Xiaodong He ◽  
Qianqian Liu ◽  
Xinxin Qi ◽  
Dongdong Sun ◽  
...  
Keyword(s):  
Surface Modification ◽  
Fe3o4 Nanoparticles ◽  
Carbon Coating ◽  
In Situ Growth ◽  
Ion Storage ◽  
Li Ion

LiMn1.5Ni0.25Fe0.2M0.05O4 Nanoparticles as a Cathode Material for Rechargeable Li-Ion Batteries

2020 ◽  
Vol 835 ◽  
pp. 149-154
Author(s):  
Haitham A. Abdellatif ◽  
Mostafa M.M. Sanad ◽  
Elsayed M. Elnaggar ◽  
Mohamed M. Rashad ◽  
Gamal M. El-Kady
Keyword(s):  
Annealing Temperature ◽  
Sol Gel ◽  
Combustion Method ◽  
Xrd Analysis ◽  
Charge Transfer Resistance ◽  
Li Ion Batteries ◽  
Transfer Resistance ◽  
Auto Combustion ◽  
Li Ion ◽  
Kinetic Diffusion

New series of spinel LiNi0.25Fe0.2Mˊ0.05Mn1.5O4 (Mˊ = Cu, Mg or Zn) cathode materials have been purposefully tailored using sol-gel auto-combustion method at low annealing temperature ~ 700°C for 3 h. The XRD analysis showed that all substituted (LNFMO-Mˊ) samples are comported with the main structure of undoped (LNFMO) with crystalline disordered spinel Fd-3m structure. TEM images revealed the octahedron-shape like morphology for the particles and the LNFMO-Zn sample has the widest particle size distribution. EIS spectra evidenced that a typical one semicircle (LNFMO-Mg) was revealed for each cell, suggesting the absence of ionic conductivity contribution. The values of charge transfer resistance (Rct) were equal to 9.3, 6.7, 6.0 and 4.4 kΩ for LNFMO, LNFMO-Cu, LNFMO-Mg indicating that the Zn-doped sample has the fastest kinetic diffusion rate and lowest activation energy of conduction.

scholarly journals Few-layer WS2 nanosheets with oxygen-incorporated defect-sulphur entrapped by a hierarchical N, S co-doped graphene network towards advanced long-term lithium storage performances

RSC Advances ◽  
2020 ◽  
Vol 10 (12) ◽  
pp. 7134-7145
Author(s):  
Yan Wang ◽  
Xiaojun Zhao ◽  
Zhi-Hong Liu
Keyword(s):  
Lithium Storage ◽  
Oxygen Incorporation ◽  
Ion Storage ◽  
Doped Graphene ◽  
One Step ◽  
Li Ion ◽  
Ws2 Nanosheets ◽  
Storage Properties ◽  
Co Doped

One-step preparation of few-layer oxygen incorporation in defect-sulphur WS2 nanosheets embedded into the NSG framework exhibits excellent Li-ion storage properties.

Fast lithium-ion storage of Nb2O5 nanocrystals in situ grown on carbon nanotubes for high-performance asymmetric supercapacitors

RSC Advances ◽  
2015 ◽  
Vol 5 (51) ◽  
pp. 41179-41185 ◽  
Author(s):  
Xiaolei Wang ◽  
Ge Li ◽  
Ricky Tjandra ◽  
Xingye Fan ◽  
Xingcheng Xiao ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
High Performance ◽  
Rate Capability ◽  
Lithium Ion ◽  
High Energy ◽  
Asymmetric Supercapacitors ◽  
Ion Storage ◽  
Energy And Power Density

Nanocomposites of Nb2O5 NCs in situ grown on CNTs are successfully developed with excellent rate capability, leading to the successful fabrication of asymmetric supercapacitors with high energy and power density and long-term cycling stability.

The oxygen vacancy in Li-ion battery cathode materials

2020 ◽  
Vol 5 (11) ◽  
pp. 1453-1466
Author(s):  
Zhen-Kun Tang ◽  
Yu-Feng Xue ◽  
Gilberto Teobaldi ◽  
Li-Min Liu
Keyword(s):  
Oxygen Vacancies ◽  
Charge Transfer Resistance ◽  
Material Structure ◽  
Rate Performance ◽  
Li Ion Batteries ◽  
Li Ion Battery ◽  
Ion Diffusion ◽  
Transfer Resistance ◽  
Accelerated Degradation ◽  
Li Ion

Oxygen vacancies can promote Li-ion diffusion, reduce the charge transfer resistance, and improve the capacity and rate performance of Li-ion batteries. However, oxygen vacancies can also lead to accelerated degradation of the cathode material structure, and lead to phase transition etc.

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