ChemInform Abstract: CHEMICAL DIFFUSION COEFFICIENTS IN LIQUID (LITHIUM, LEAD), (LITHIUM, SILVER), AND (LITHIUM, CADMIUM) ALLOYS

1983 ◽  
Vol 14 (41) ◽  
Author(s):  
G. SCHWITZGEBEL ◽  
W. BECKER ◽  
G. LANGEN
Keyword(s):  
Diffusion Coefficients ◽  
Chemical Diffusion ◽  
Liquid Lithium

Structure and Soft-Packed Cell Performance of Nano-Particle LiFePO4 Prepared by Spray-Drying Method

2020 ◽  
Vol 1003 ◽  
pp. 268-274
Author(s):  
Ling Li Zuo ◽  
Lin Chen ◽  
Shuo Yin ◽  
Ji Yun Liu ◽  
Cheng Lu ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Electrochemical Properties ◽  
Spray Drying ◽  
Diffusion Coefficients ◽  
Rate Capability ◽  
Chemical Diffusion ◽  
Nano Particle ◽  
Drying Method ◽  
Capacity Retention ◽  
Lithium Ions

Well-crystallized and nanosized LiFePO4/C composite have been successfully synthesized by spray-drying under N2 atmosphere. The morphology, physical and electrochemical properties of the LiFePO4/C were tested and analyzed. The charge transfer resistances (Rct) and chemical diffusion coefficients of lithium ions (DLi+) in LiFePO4/C was systematically tested by EIS. The results show that the lithium ions diffusion coefficients obtained from EIS is 1.58×10-14 cm2·s-1. The assembled soft-packed cell with LiFePO4/C show better rate capability and cycling stability. The average capacity retention of LiFePO4/C soft-packed cell decreases to 100%, 98.9%, 96.5%, 92.4%, and 90.3% when current rate increases to 0.3, 0.5, 1, 2, and 3C, respectively. The capacity retention after 80 cycles is retained at more than 99%.

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