Journal
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
Volume 123, Issue -, Pages 271-278Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.jpcs.2018.08.008
Keywords
Lithium ion battery; Cathode; High voltage; Titanium doping; Particle hardness; Crack
Funding
- Fundamental R&D Program for Technology of World Premier Materials - Ministry of Trade, Industry, & Energy (MOTIE), Republic of Korea [10037921]
- MOTIE
- Korea Institute for Advancement of Technology through the Encouragement Program for the Industries of Economic Cooperation Region [R0004646]
Ask authors/readers for more resources
Titanium doping on LiNi1/3Co1/3Mn1/3O2 cathode material is performed in a bid to improve its electrochemical and thermal properties at high voltage. The particle hardness is measured in order to verify the structural stability, and is found to improve from 104 to 143 MPa as a result of the Ti doping. Thus, high electrode density is obtained with less cracked particles in the electrode. Electrode density of 3.9 g cm(-3) is employed in order to confirm the effect of particle hardness on the electrochemical performance. The cycle performance is evaluated at 4.5 V and high temperature of 60 degrees C, and the obtained capacity retention after 50 cycles is found to be significantly improved via Ti doping. The cycled electrodes show that the generation of crack inside particles are suppressed for Ti-doped LiNi1/3Co1/3Mn1/3O2. The thermal stability of the charged electrode is also improved via Ti doping, because of the enhanced structural stability. On the basis of these results, Ti is considered to be a viable dopant for improving particle hardness, which is an important factor as regards improving the electrochemical and thermal properties of LiNi1/3Co1/3Mn1/3O2.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available