Organic materials for the improvement and understanding of electrochemical devices

Petronico, Aaron

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Description

Title

Organic materials for the improvement and understanding of electrochemical devices

Author(s)

Petronico, Aaron

Issue Date

2018-10-05

Director of Research (if dissertation) or Advisor (if thesis)

Nuzzo, Ralph G.

Doctoral Committee Chair(s)

Nuzzo, Ralph G.

Committee Member(s)

• Gewirth, Andrew A.
• Braun, Paul V.
• Rodríguez-López, Joaquín

Department of Study

Chemistry

Discipline

Chemistry

Degree Granting Institution

University of Illinois at Urbana-Champaign

Degree Name

Ph.D.

Degree Level

Dissertation

Keyword(s)

Battery, Cathode, Organic, Electrochemistry

Abstract

The contents of this thesis focus on how organic materials can be applied to improve Li+ based batteries. There is specific focus mostly on cathode materials and a single project involving electrolytes. For cathodes the main focus is how quinone polymers can be applied as Li+ cathodes and results in a 4e- cathode with record breaking capacity. We then go on to do some minor mechanistic and fundamental studies. The second cathode focus is how organic materials can augment existing technology. In this regard we investigate how alkyl phosphonates can form monolayer coating on Lithium Manganese Oxide cathode particles to suppress Mn dissolution during cycling. Finally we modify Li-S cathodes by chemically crosslinking poly-sulfide with conductive poly aniline to increase cycle life and cathode sulfur loadings. To improve Li+ electrolytes we demonstrate that persistently porous organic cages can serve as host structures to form solid-liquid electrolyte nano-composites. Taken together this work demonstrates the innovative impact Organic materials can have on battery technology.

Graduation Semester

2018-12

Type of Resource

text

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Copyright and License Information

Copyright 2018 Aaron Petronico

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