|Author||Veluchamy, A. ♦ Ikuta, H. ♦ Wakihara, M.|
|Source||CSIR-Central Electrochemical Research Institute|
|Subject Domain (in DDC)||Technology ♦ Engineering & allied operations ♦ Applied physics|
|Subject Keyword||Lithium batteries ♦ Electrochemical Power Sources|
|Abstract||An attempt has been made to synthesize boron-substituted cubic spinel through solid state ŽSS. and solution route ŽSR. techniques. The synthesized spinels have been examined for their physical and electrochemical characteristics through exsitu-X-ray diffractometry ŽXRD. and SEM, as well as by charge–discharge cycling and diffusion coefficient measurements. X-ray diffraction reveals boron elimination from boron-substituted spinel ŽSR-B spinel. resulting in phase splitting to lithium borate glass formation and parent cubic spinel when subjected to heating at and above 6008C. Synthesis through SR with precursor material calcined at 5008C only provides high discharge capacity with good cyclability. The measurement of diffusion coefficient of lithium supports that boron got substituted at 16d site in Fd3m spinel structure. This paper discusses the mechanism underlying the stability of boron-substituted spinel and the suitability of LiB1r9Mn17r9O4 as a promising positive electrode candidate for lithium ion battery.|
|Education Level||UG and PG|
|Learning Resource Type||Article|
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