Abstract
In an attempt to prepare phase-pure LiCo1/3Mn1/3Ni1/3O2 compound, the sol–gel method with precursors containing different ratios of lithium and transition-metal ions such as Li:M = 1:1, 1.05:1, 1.10:1, 1.15:1, 1.20:1, and 1.25:1 has been deployed. Properties such as phase purity, perfect layeredness, good cation ordering, and acceptable charge–discharge behavior were observed only when LiCo1/3Ni1/3Mn1/3O2 was prepared using a Li:M ratio of 1.15:1.0, leading to the recommendation of this as the optimum precursor ratio to prepare active LiCo1/3Ni1/3Mn1/3O2 cathodes for batteries. Further, with a view to suppress the capacity fade behavior of native LiCo1/3Mn1/3Ni1/3O2 cathodes observed in high-voltage (4.6 V) regions, selected HF-scavenging metal oxide (Al2O3) or metal hydroxide [Al(OH)3] was deployed as a surface modifier. Interestingly, LiCo1/3Ni1/3Mn1/3O2 cathode modified with Al(OH)3 exhibited significantly improved electrochemical properties such as lower charge-transfer resistance (42 Ω), higher specific capacity (158 mAh/g), and excellent capacity retention (99%). This study demonstrates the superiority of Al(OH)3 over Al2O3 in modifying the electrochemical properties of native LiCo1/3Ni1/3Mn1/3O2 cathodes, as desired for practical lithium battery applications.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
