Abstract
Quinones have a capacity for high energy storage and exhibit facile and reversible electrochemistry in several widely different electrolytes. They are, therefore, one of the most popular compounds ...
Highlights
The increasing demand for electrical energy storage (EES) is currently satisfied by various types of lithium ion battery (LIB) technologies
We have shown that quinone electrochemistry is heavily dependent on the charge-balancing ions
Li+ cycling positively shifted the E°′ value compared to the corresponding value observed in TBAPF6/ MeCN
Summary
The increasing demand for electrical energy storage (EES) is currently satisfied by various types of lithium ion battery (LIB) technologies. As quinones are used as both anode and cathode materials,[16,17] it is important to understand how the E°′ of Q can be tuned by substitution on the aromatic ring It is well-known that quinone derivatives with electron-withdrawing substituents on the aromatic ring can push E°′ positively while electron-donating substitutions can pull it negatively.[18] a systematic study of how these substitution effects are affected by different cycling ions and solvents has not previously been conducted. As a result of density functional theory (DFT) calculations with explicit treatment of the surrounding water, we attributed this effect to electron donation from solvent water molecules counteracting the effect of substitution
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