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Congcong Huang, Prof. Ting Sun and Dr. Denisa Hulicova-Jurcakova Wide Electrochemical Window of Supercapacitors from Coffee Bean-Derived Phosphorus-Rich Carbons ChemSusChem 6

Version of Record online: 12 SEP 2013 | DOI: 10.1002/cssc.201300457

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Rich pick-me-up! Waste coffee grounds are used to synthesize phosphorus-rich carbons (PCs), which show intriguing properties as electrode materials of an acidic supercapacitor. Large potentials can be applied, owing to the stabilizing effect of phosphorus on the carbon surface and reversible electrochemical hydrogen storage in pores of the PC.

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