Phenothiazine Derivatives as Small‐Molecule Organic Cathodes with Adjustable Dropout Voltage and Cycle Performance
Citations Over TimeTop 10% of 2024 papers
Abstract
Compared with conventional inorganic materials, organic electrodes are competitive candidates for secondary battery cathodes due to their resourcefulness, environmental friendliness, and cost-effectiveness. Much effort is devoted at the level of chemical structure, while ignoring the impact of molecular aggregation on battery behavior. Herein, this work designs a series of organic molecules with two electrochemically active phenothiazine groups linked by different lengths of alkyl chain to regulate molecular symmetry and crystallinity. The results emphasize the equally important role of molecular aggregation and chemical structure for battery performance. Among them, 2PTZ-C7H14|Li cell exhibits the most impressive cycle and rate performance. At the high rate of 50 C, it can still deliver a capacity of 63.4 mA h g-1 and 74.5% capacity retention after 10 000 cycles. Besides, the dropout voltage of 2PTZ-C9H18|Li cell is only 52 mV, which is among the lowest reported for lithium-organic batteries to the best of the author's knowledge.
Related Papers
- → Optical and electrochemical properties of ethynylaniline derivatives of phenothiazine, phenothiazine-5-oxide and phenothiazine-5,5-dioxide(2014)36 cited
- → Oxidation Kinetics of Phenothiazine and 10-Methylphenothiazine in Acidic Medium(1977)14 cited
- → Fate of the anthelmintic, phenothiazine, in man(2002)5 cited
- → ChemInform Abstract: A NEW STUDY OF THE ELECTROCHEMICAL OXIDATION OF THE PHENOTHIAZINE RING. I. THE CASE OF PHENOTHIAZINE AND ITS 3 AND 7 DISUBSTITUTED DERIVATIVES(1978)
- → Spectrophotometric determination of phenothiazine with ferric chloride(1968)