Journal
BATTERIES-BASEL
Volume 8, Issue 8, Pages -Publisher
MDPI
DOI: 10.3390/batteries8080078
Keywords
lithium-ion battery; LTO anode; sodium doping; lithium-ion diffusivity
Funding
- National Key R& DProgramof China [2021YFF0601101]
- Pearl River Talents Scheme [2019QN01L385]
- Science and Technology Program of Guangzhou, China [202201011357]
- Guangdong Key Laboratory of Battery Safety [2019B121203008]
Ask authors/readers for more resources
The introduction of large cations can improve the electrochemical performance of Li-ion batteries, but excessive concentration can hinder the transfer of lithium ions.
Large cations such as potassium ion (K+) and sodium ion (Na+) could be introduced into the lithium-ion (Li-ion) battery system during material synthesis or battery assembly. However, the effect of these cations on charge storage or electrochemical performance has not been fully understood. In this study, sodium ion was taken as an example and introduced into the lithium titanium oxide (LTO) anode through the carboxymethyl cellulose (CMC) binder. After the charge/discharge cycles, these ions doped into the LTO lattice and improved both the lithium-ion diffusivity and the electronic conductivity of the anode. The sodium ion's high concentration (>12.9%), however, resulted in internal doping of Na+ into the LTO lattice, which retarded the transfer of lithium ions due to repulsion and physical blocking. The systematic study presented here shows that large cations with an appropriate concentration in the electrode would be beneficial to the electrochemical performance of the Li-ion battery.
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