Tripathi, Abhinav published the artcileDeveloping an O3 type layered oxide cathode and its application in 18650 commercial type Na-ion batteries, Recommanded Product: 2,5,8,11,14-Pentaoxapentadecane, the main research area is layered oxide cathode sodium ion battery.
A novel, water-stable and high energy d. cathode material Na0.9Cu0.12Ni0.10Fe0.30Mn0.43Ti0.05O2 (NCNFMT) is reported here along with a thorough understanding of structural events during battery operation. Systematic substitutions are carried out, which lead to increase in specific energy densities of this family of cathodes from 274.6 W h kgcathode-1 (NCFM – Na0.9Cu0.22Fe0.30Mn0.48O2) to 304.2 W h kgcathode-1 (NCFMT – Na0.9Cu0.22Fe0.30Mn0.43Ti0.05O2) and finally to 350.7 W h kgcathode-1 (NCNFMT – Na0.9Cu0.12Ni0.10Fe0.30Mn0.43Ti0.05O2). Operando X-ray diffraction reveals phase transformations and ex situ EXAFS shows the evolution of local environments around transition metals during charge/discharge. Monoclinic distortions in the NCFM material during O3-P3 phase transformations are suppressed by Ti4+ substitution leading to improvements in the cycling performance of NCFMT. Cu-O octahedral sites exhibit huge Jahn-Teller distortion: Ni2+ substitution in place of Cu2+ not only leads to more ordered Ni-O, but it also helps extract more Na ions from the O3 cathode structure, thus boosting the capacity while also showing good cycling stability due to the highly reversible bond-length and local environmental changes as revealed by EXAFS analyses. XPS shows a titanium-rich surface for NCFMT and NCNFMT which helps improve water-stability. The capacity retention after 200 cycles at 0.2C is 84%, 96% and 90% for NCFM, NCFMT and NCNFMT resp. The delivered storage capacities of NCFM, NCFMT and NCNFMT are 21 mA h g-1, 47 mA h g-1 and 60 mA h g-1 resp. at 3C. 18650 type Na-ion batteries using the NCNFMT cathode material against a hard carbon anode are also reported to demonstrate potential scalability of the NCNFMT cathode and efficacy of a 1 M NaBF4 tetraglyme electrolyte system for the first time. 18650 cells deliver a specific energy d. of 62 W h kgtotal_18650_weight-1 with 90% energy efficiency, thus being suitable for large scale energy storage applications.
Journal of Materials Chemistry A: Materials for Energy and Sustainability 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, Recommanded Product: 2,5,8,11,14-Pentaoxapentadecane.
Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem