scholarly journals Effect of cobalt content on the electrochemical properties and structural stability of NCA type cathode materials

2018 ◽  
Vol 20 (35) ◽  
pp. 22805-22817 ◽  
Author(s):  
Kamalika Ghatak ◽  
Swastik Basu ◽  
Tridip Das ◽  
Vidushi Sharma ◽  
Hemant Kumar ◽  
...  
Keyword(s):  
Electrochemical Properties ◽  
Structural Stability ◽  
Cathode Materials ◽  
Low Cost ◽  
Cobalt Content ◽  
Computational Design ◽  
Cobalt Concentration ◽  
Environmentally Benign

Computational design of environmentally benign low-cost, cathode materials with reduced cobalt concentration.

Bond-valence Based Computational Design of High Performance Lithium Ion Battery Cathode Materials

2011 ◽  
Vol 1331 ◽  
Author(s):  
Stefan Adams
Keyword(s):  
Lithium Ion Battery ◽  
Cathode Materials ◽  
High Performance ◽  
Low Cost ◽  
Lithium Ion ◽  
Computational Design ◽  
Md Simulations ◽  
Energy Scale ◽  
Bond Valence ◽  
Power Performance

ABSTRACTLinking the bond valence mismatch to the absolute energy scale, a generally applicable Morse-type force-field is developed and applied to study ion conduction in mixed conducting solids using both an energy landscape approach and molecular dynamics (MD) simulations. Exploring strategies to enhance the power performance of safe low cost lithium ion battery cathode materials, amblygonite-type “high voltage” cathode materials LiVPO4F and LiFeSO4F are used as examples. The amblygonite-type structure exhibits channels for low-energy migration in combination with moderate energy thresholds for "back-up" pathways in perpendicular directions mitigating the effects of channel blocking in mixed conductors with strictly one-dimensional Li+ motion.

scholarly journals Suppressing the voltage decay of low-cost P2-type iron-based cathode materials for sodium-ion batteries

2018 ◽  
Vol 6 (42) ◽  
pp. 20795-20803 ◽  
Author(s):  
Shuyin Xu ◽  
Jinpeng Wu ◽  
Enyuan Hu ◽  
Qinghao Li ◽  
Jienan Zhang ◽  
...  
Keyword(s):  
Structural Stability ◽  
Cathode Materials ◽  
Low Cost ◽  
Sodium Ion ◽  
Sodium Ion Batteries ◽  
Layered Oxides ◽  
Cu Doping ◽  
Voltage Decay ◽  
Iron Based

We demonstrate the voltage decay in Fe based layered oxides comes from a dynamic origin. With excess Cu doping, Fe migration can be mitigated and structural stability can be maintained.

scholarly journals First-principles study of the structural stability and electrochemical properties of Na2MSiO4 (M = Mn, Fe, Co and Ni) polymorphs

2017 ◽  
Vol 19 (22) ◽  
pp. 14462-14470 ◽  
Author(s):  
F. Bianchini ◽  
H. Fjellvåg ◽  
P. Vajeeston
Keyword(s):  
Electrochemical Properties ◽  
Structural Stability ◽  
Configuration Space ◽  
Cathode Materials ◽  
First Principles ◽  
Diffusion Barriers ◽  
First Principles Study ◽  
And Diffusion

We present a DFT-based study of Na orthosilicates Na2MSIO4 (M = Mn, Fe, CO, Ni), promising novel cathode materials. The configuration space is explored, and the Na intercalation potential and diffusion barriers are calculated.

Structural stability and electrochemical properties of gadolinium-substituted LiGdxMn2-xO4 spinel as cathode materials for Li-ion rechargeable batteries

2018 ◽  
Vol 449 ◽  
pp. 412-420 ◽  
Author(s):  
Kumaran Vediappan ◽  
Kadirvelayutham Prasanna ◽  
Swaminathan Shanmugan ◽  
RM Gnanamuthu ◽  
Chang Woo Lee
Keyword(s):  
Electrochemical Properties ◽  
Structural Stability ◽  
Cathode Materials ◽  
Rechargeable Batteries ◽  
Li Ion

A multiscale investigation elucidating the structural complexities and electrochemical properties of layered–layered composite cathode materials synthesized at low temperatures

2020 ◽  
Vol 22 (10) ◽  
pp. 5439-5448
Author(s):  
Songyoot Kaewmala ◽  
Narinthorn Wiriya ◽  
Patcharapohn Chantrasuwan ◽  
Visittapong Yordsri ◽  
Wanwisa Limphirat ◽  
...  
Keyword(s):  
Electrochemical Properties ◽  
Structural Stability ◽  
Cathode Materials ◽  
Low Temperatures ◽  
Composite Cathode ◽  
Layered Composite ◽  
Microstructural Characteristics ◽  
Cooling Rates ◽  
Heating And Cooling ◽  
Composite Cathodes

0.5Li2MnO3·0.5LiCoO2 composite cathodes prepared using various heating and cooling rates under 600 °C reveal different microstructural characteristics that significantly impact their structural stability and electrochemical properties.

scholarly journals Na0.76V6O15/Activated Carbon Hybrid Cathode for High-Performance Lithium-Ion Capacitors

Materials ◽  
2020 ◽  
Vol 14 (1) ◽  
pp. 122
Author(s):  
Renwei Lu ◽  
Xiaolong Ren ◽  
Chong Wang ◽  
Changzhen Zhan ◽  
Ding Nan ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Energy Density ◽  
Power Density ◽  
Cathode Materials ◽  
Low Cost ◽  
Lithium Ion ◽  
High Energy ◽  
Cycling Stability ◽  
High Energy Density ◽  
Artificial Graphite

Lithium-ion hybrid capacitors (LICs) are regarded as one of the most promising next generation energy storage devices. Commercial activated carbon materials with low cost and excellent cycling stability are widely used as cathode materials for LICs, however, their low energy density remains a significant challenge for the practical applications of LICs. Herein, Na0.76V6O15 nanobelts (NaVO) were prepared and combined with commercial activated carbon YP50D to form hybrid cathode materials. Credit to the synergism of its capacitive effect and diffusion-controlled faradaic effect, NaVO/C hybrid cathode displays both superior cyclability and enhanced capacity. LICs were assembled with the as-prepared NaVO/C hybrid cathode and artificial graphite anode which was pre-lithiated. Furthermore, 10-NaVO/C//AG LIC delivers a high energy density of 118.9 Wh kg−1 at a power density of 220.6 W kg−1 and retains 43.7 Wh kg−1 even at a high power density of 21,793.0 W kg−1. The LIC can also maintain long-term cycling stability with capacitance retention of approximately 70% after 5000 cycles at 1 A g−1. Accordingly, hybrid cathodes composed of commercial activated carbon and a small amount of high energy battery-type materials are expected to be a candidate for low-cost advanced LICs with both high energy density and power density.

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