Lithium-ion batteries have been vigorously studied due to their numerous benefits such as high energy density, high voltage and a low self-discharge rate. Prototypes of thin-film batteries have incorporated active materials such as LiCoO2, LiMn2O4 and Li2MSiO4 (where M=Mn, Fe, Ni, etc.). Lithium silicates have been proposed as candidates with higher theoretical capacity. In this project we want to test the hypothesis that Li2MSiO4 with mixed M of Fe and Mn might provide superior performance to the pure phases as observed in the case of the layered LiMO2 cathodes. Li2FexMn1-xSiO4 materials with different Mn to Fe ratios have been synthesized using a sol-gel procedure. We characterized the composites through an array of tests, including XRD, SEM and coin-cell battery testing.

• This report represents the work of one or more WPI undergraduate students submitted to the faculty as evidence of completion of a degree requirement. WPI routinely publishes these reports on its website without editorial or peer review.

Creator

• Boucher, Andrew Leo
• Ducey, Michael Edward
• McNeff, Nathan A.

Contributors

• Cen, Yinjie

Publisher

• Worcester Polytechnic Institute

Identifier

• E-project-042512-143718

Advisor

• Liang, Jianyu
• DiBiasio, David

Year

• 2012

Date created

• 2012-04-25

Resource type

• Major Qualifying Project

Major

• Chemical Engineering

Rights statement

• In Copyright