Willow bark for sustainable energy storage systems
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A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
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Date
2020-02-01
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Language
en
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Materials, Volume 13, issue 4
Abstract
Willow bark is a byproduct from forestry and is obtained at an industrial scale. We upcycled this byproduct in a two-step procedure into sustainable electrode materials for symmetrical supercapacitors using organic electrolytes. The procedure employed precarbonization followed by carbonization using different types of KOH activation protocols. The obtained electrode materials had a hierarchically organized pore structure and featured a high specific surface area (>2500 m2 g-1) and pore volume (up to 1.48 cm3 g-1). The assembled supercapacitors exhibited capacitances up to 147 F g-1 in organic electrolytes concomitant with excellent cycling performance over 10,000 cycles at 0.6 A g-1 using coin cells. The best materials exhibited a capacity retention of 75% when changing scan rates from 2 to 100 mV s-1.Description
Keywords
carbon activation, electrode formation, organic electrolytes, supercapacitors, upcycling, willow bark
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Citation
Hobisch, M A, Phiri, J, Dou, J, Gane, P, Vuorinen, T, Bauer, W, Prehal, C, Maloney, T & Spirk, S 2020, ' Willow bark for sustainable energy storage systems ', Materials, vol. 13, no. 4, 1016 . https://doi.org/10.3390/ma13041016
