Effects of Zr doping to improve ionic conductivity and lithium-diffusion kinetics of β-LiVOPO4 cathode material

2020 ◽  
Vol 83 ◽  
pp. 260-270 ◽  
Author(s):  
Da-Jeong Park ◽  
Rajesh Rajagopal ◽  
Kwang-Sun Ryu
Keyword(s):  
Ionic Conductivity ◽  
Cathode Material ◽  
Diffusion Kinetics ◽  
Lithium Diffusion ◽  
Kinetics Of

Temperature dependent surface morphology and lithium diffusion kinetics of LiCoO2 cathode

2012 ◽  
Vol 18 (2) ◽  
pp. 249-255 ◽  
Author(s):  
R. Lakshmanan ◽  
Gangulibabu ◽  
D. Bhuvaneswari ◽  
N. Kalaiselvi
Keyword(s):  
Surface Morphology ◽  
Diffusion Kinetics ◽  
Temperature Dependent ◽  
Lithium Diffusion ◽  
Kinetics Of ◽  
Licoo2 Cathode

Revealing the correlation between structural evolution and Li+ diffusion kinetics of nickel-rich cathode materials in Li-ion batteries

2020 ◽  
Vol 8 (17) ◽  
pp. 8540-8547 ◽  
Author(s):  
Chaoyu Hong ◽  
Qianyi Leng ◽  
Jianping Zhu ◽  
Shiyao Zheng ◽  
Huajin He ◽  
...  
Keyword(s):  
Diffusion Rate ◽  
Structural Evolution ◽  
Discharge Process ◽  
Li Ion Batteries ◽  
Diffusion Kinetics ◽  
Irreversible Capacity ◽  
Capacity Loss ◽  
Lithium Diffusion ◽  
Li Ion ◽  
Kinetics Of

Slow lithium diffusion kinetics of H1 phase during discharge determines the initial irreversible capacity loss of NCM-based materials. By controlling lithium diffusion rate in the discharge process, extra capacity is obtained in the materials.

Kinetics of Methane-Oxidizing Biofilms for Degradation of Toxic Organics

1988 ◽  
Vol 20 (11-12) ◽  
pp. 167-173 ◽  
Author(s):  
S. E. Strand ◽  
R. M. Seamons ◽  
M. D. Bjelland ◽  
H. D. Stensel
Keyword(s):  
Chlorinated Hydrocarbons ◽  
Enzymatic Oxidation ◽  
Diffusion Kinetics ◽  
Toxic Compound ◽  
Biofilm Model ◽  
Uptake Rates ◽  
Substrate Diffusion ◽  
Toxic Organics ◽  
Competitive Substrate ◽  
Kinetics Of

The kinetics of methane-oxidizing bioreactors for the degradation of toxic organics are modeled. Calculations of the fluxes of methane and toxic chlorinated hydrocarbons were made using a biofilm model. The model simulated the effects of competition by toxics and mediane on their enzymatic oxidation by the methane monooxygenase. Dual-competitive-substrate/diffusion kinetics were used to model biofilm co-metabolism, integrating equations of the following form:where S1 and S2 are the local concentrations of methane and toxic compound, respectively, and r and K are the maximum uptake rates and Monod coefficients, and x is the distance into the biofilm.

Elastic Properties of Steps at Interphase Boundaries

1991 ◽  
Vol 238 ◽  
Author(s):  
G. J. Shiflet
Keyword(s):  
Energy Density ◽  
Elastic Properties ◽  
Mathematical Analysis ◽  
Strain Energy ◽  
Chemical Processes ◽  
Diffusion Kinetics ◽  
Interphase Boundaries ◽  
Kinetics Of ◽  
Maximum Stresses

ABSTRACTStresses are introduced in crystals at interphase boundaries where steps improve the registry of atoms. A model and mathematical analysis based on an approach previously taken by van der Merwe and Shiflet1–4 of the problem incorporating a coherent step are presented. Computed distributions of stresses, strains, dilatation and energy density in the form of contours and nets are given for a coherent monatomic step. It is concluded that the maximum stresses are quite large and the fields decay fairly rapidly with distance from the steps, the gradient of dilatation around steps will significantly affect diffusion kinetics of impurities and the strain energy seems too low to significantly enhance chemical processes.

First Principles Calculations on Lithium Diffusion near Surface and in Bulk of Fe-doped LiCoPO4

2021 ◽  
Author(s):  
Kuan-Ching Wu ◽  
Chieh-Ming Hsieh ◽  
Bor Kae Chang
Keyword(s):  
Cathode Material ◽  
Lithium Ion Batteries ◽  
High Voltage ◽  
First Principles ◽  
Energy Barrier ◽  
Lithium Ion ◽  
First Principles Calculations ◽  
Near Surface ◽  
Lithium Diffusion ◽  
Olivine Phosphate

The olivine phosphate LiCoPO4 is a prospective cathode material in high voltage lithium ion batteries. During lithium diffusion, the ions must overcome diffusion energy barrier near the surface and in...

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