Nanostructured organic radical cathodes from self-assembled nitroxide-containing block copolymers
(2016)
Files
Thesis-GuillaumeHauffman-Final.pdf
Open Access - Adobe PDF
- 28.79 MB
Details
- Authors
- Supervisors
- Gohy, Jean-François
- Abstract
- Whereas computers and mobile devices have undergo a rapid development, the development of the batteries needed in these devices goes much more slowly. Problematic issues of actual Li-ion batteries are their recyclability, the accessibility of the raw materials and the long charging time needed. In this context, organic radical batteries (ORBs) based on nitroxide bearing polymers have attracted much interest. Indeed, ORBs can be charged up to 100 times faster than Li-ion batteries, opening the possibility to recharge a mobile device in a few minutes. The self-assembly properties of block copolymers in solution and in bulk have also been widely studied during the past decade, leading to the fabrication of nanostructured materials such as micelles and polymer thin films. This thesis focuses on combining the self-assembly properties of block copolymers with the redox properties of nitroxide bearing polymers in order to form a new generation of miniaturized batteries at the nanometer scale. The first part of this thesis deals with the synthesis of block copolymers. These block copolymers are made of two blocks, an electrochemically active one and an inert one which will guarantee structural integrity of the nanocathode formed. The second part deals with the self-assembly study of the block copolymers in solution to form micelles and their potential application as catholyte in organic redox flow batteries. The third part deals with the self-assembly in thin films in order to create nanostructured organic radical cathodes and investigate their electrochemical behaviors. Finally, the development of another block copolymer replacing the inactive moiety by an electrochemically active one is investigated.
- Affiliations
Citations
Hauffman, G. (2016). Nanostructured organic radical cathodes from self-assembled nitroxide-containing block copolymers. https://hdl.handle.net/2078.5/185071