Subasinghe, Lihil Uthpala published the artcileA study on heat generation characteristics of Na3V2(PO4)3 cathode and hard carbon anode-based sodium-ion cells, Application In Synthesis of 143-24-8, the main research area is heat generation sodium vanadium phosphate cathode; hard carbon anode sodium ion cells.
We report here the heat generation and impedance characteristics of prototype 18650-sized sodium-ion cells using pristine Na3V2(PO4)3 (P-NVP) and modified Na3.2V1.8Zn0.2(PO4)3 (M-NVP) cathodes, hard carbon (HC) anode and an ether-based non-flammable electrolyte, 1 M NaBF4 in tetraglyme. Comparison of calorimetric studies performed on 18650-sized cells reveals lower heat generation in M-NVP vs. HC compared to P-NVP vs. HC owing to low internal resistance achieved as a result of Zn2+ doping in M-NVP. Both irreversible heat generation arose due to internal resistance and reversible heat generation caused by entropic changes in the electrode materials are elucidated. Furthermore, variation in subcomponents of internal resistance in both 18650-sized full cells and CR2016-sized half-cells is analyzed by fitting electrochem. impedance spectra into equivalent circuit models. Individual contributions of anode and cathode to the impedance characteristics of the cells are determined by analyzing impedance data of the half-cells using the distribution of relaxation times method. The results reveal lower diffusion resistance, as well as charge transfer resistance in M-NVP cells compared to P-NVP counterpart, accounting for the observed lower total internal resistance in M-NVP vs. HC and thus lower heat generation in M-NVP vs. HC cell than P-NVP vs. HC cell.
Journal of Thermal Analysis and Calorimetry published new progress about Battery anodes. 143-24-8 belongs to class ethers-buliding-blocks, name is 2,5,8,11,14-Pentaoxapentadecane, and the molecular formula is C10H22O5, Application In Synthesis of 143-24-8.
Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem