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Dr. Denisa Hulicova-Jurcakova, Erika Fiset, Prof. Gao Qing Max Lu and Prof. Teresa J. Bandosz Changes in Surface Chemistry of Carbon Materials upon Electrochemical Measurements and their Effects on Capacitance in Acidic and Neutral Electrolytes ChemSusChem 5

Version of Record online: 19 OCT 2012 | DOI: 10.1002/cssc.201200376

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Test boosts performance: The significant increase of the energy storage capacity upon three-eletrode tests observed in oxygen- and nitrogen+oxygen-rich carbons in an acidic electrolyte is attributed to two different mechanisms: For oxygen-rich carbons (CA, CB), the double-layer capacitance is amplified because of the removal of O-I and O-II bulky oxygen-containing functionalities, whereas for nitrogen+oxygen-rich (CAU, CBU) carbons, the pseudocapacitance is enhanced, a result of the increased proportion of pyridone N-5 nitrogen atoms.

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