Influence of Polymer Backbone Fluorination on the Electrochemical Behavior of Single-Ion Conducting Multiblock Copolymer Electrolytes was written by Mayer, Alexander;Nguyen, Huu-Dat;Mariani, Alessandro;Diemant, Thomas;Lyonnard, Sandrine;Iojoiu, Cristina;Passerini, Stefano;Bresser, Dominic. And the article was included in ACS Macro Letters in 2022.Electric Literature of C4H4BrNO2 This article mentions the following:
The presence of fluorine, especially in the electrolyte, frequently has a beneficial effect on the performance of lithium batteries owing to, for instance, the stabilization of the interfaces and interphases with the pos. and neg. electrodes. However, the presence of fluorine is also associated with reduced recyclability and low biodegradability. Herein, we present a single-ion conducting multiblock copolymer electrolyte comprising a fluorine-free backbone and compare it with the fluorinated analog reported earlier. Following a comprehensive physicochem. and electrochem. characterization of the copolymer with the fluorine-free backbone, the focus of the comparison with the fluorinated analog was particularly on the electrochem. stability toward oxidation and reduction as well as the reactions occurring at the interface with the lithium-metal electrode. To deconvolute the impact of the fluorine in the ionic side chain and the copolymer backbone, suitable model compounds were identified and studied exptl. and theor. The results show that the absence of fluorine in the backbone has little impact on the basic electrochem. properties, such as the ionic conductivity, but severely affects the electrochem. stability and interfacial stability. The results highlight the need for a very careful design of the whole polymer for each desired application, essentially, just like for liquid electrolytes. In the experiment, the researchers used many compounds, for example, 1-Bromopyrrolidine-2,5-dione (cas: 128-08-5Electric Literature of C4H4BrNO2).
1-Bromopyrrolidine-2,5-dione (cas: 128-08-5) belongs to organobromine compounds. Most organobromine compounds, like most organohalide compounds, are relatively nonpolar. In the pharmaceutical industry organo bromine derivatives are used as sedatives, vasodilators, antiseptic agents, and anticancer agents.Electric Literature of C4H4BrNO2
Referemce:
Bromide – Wikipedia,
bromide – Wiktionary