Unknown

Dataset Information

0

Novel polymer coating for chemically absorbing CO2 for safe Li-ion battery.


ABSTRACT: Gas evolution in Li-ion batteries remains a barrier for the implementation of high voltage materials in a pouch cell format; the inflation of the pouch cell is a safety issue that can cause battery failure. In particular, for manganese-based materials employed for fabricating cathodes, the dissolution of Mn2+ in the electrolyte can accelerate cell degradation, and subsequently gas evolution, of which carbon dioxide (CO2) is a major component. We report on the utilization of a mixture of polymers that can chemically absorb the CO2, including the coating of aluminum foils, which serve as trapping sheets, introduced into two Ah pouch cells-based on a LiMnFePO4 (cathode) and a Li4Ti5O12 (anode). The pouch cells with trapping sheets experienced only an 8.0?vol% inflation (2.7?mmol CO2 per gram of polymers) as opposed to the 40?vol% inflation for the reference sample. Moreover, the cells were cycled for 570 cycles at 1?C and 45?°C before reaching 80% of their retention capacity.

SUBMITTER: Daigle JC 

PROVIDER: S-EPMC7316716 | biostudies-literature | 2020 Jun

REPOSITORIES: biostudies-literature

altmetric image

Publications

Novel polymer coating for chemically absorbing CO<sub>2</sub> for safe Li-ion battery.

Daigle Jean-Christophe JC   Asakawa Yuichiro Y   Perea Alexis A   Dontigny Martin M   Zaghib Karim K  

Scientific reports 20200625 1


Gas evolution in Li-ion batteries remains a barrier for the implementation of high voltage materials in a pouch cell format; the inflation of the pouch cell is a safety issue that can cause battery failure. In particular, for manganese-based materials employed for fabricating cathodes, the dissolution of Mn<sup>2+</sup> in the electrolyte can accelerate cell degradation, and subsequently gas evolution, of which carbon dioxide (CO<sub>2</sub>) is a major component. We report on the utilization of  ...[more]

Similar Datasets

| S-EPMC7001862 | biostudies-literature
| S-EPMC9043788 | biostudies-literature
| S-EPMC9079043 | biostudies-literature
| S-EPMC5951427 | biostudies-literature
| S-EPMC6408559 | biostudies-literature
| S-EPMC6893958 | biostudies-literature
| S-EPMC7198488 | biostudies-literature
| S-EPMC6640915 | biostudies-literature
| S-EPMC11339997 | biostudies-literature
| S-EPMC9066188 | biostudies-literature