Journal
MATERIALS LETTERS
Volume 230, Issue -, Pages 123-127Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.matlet.2018.07.096
Keywords
Mango stone; Carbon materials; Hierarchical pores; Electrical properties; Supercapacitor
Funding
- National Natural Science Foundation of China [U1304203]
- Foundation of Henan Educational Committee [16A150046]
- Natural Science Foundation of Henan Province [162300410258]
- College Science and Technology Innovation Team of Henan Province [16IRTSTHN001]
- Innovation Foundation of Zhengzhou University [201810459003]
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Porous activated carbon was successfully fabricated from bio waste-mango stone via a two-step chemical etching strategy. The optimized carbon material (denoted as MGKZ-2) displayed a high specific capacitance of 353.8 Fg(-1) at 0.5 A g(-1) and a satisfactory rate capability in the three-electrode supercapacitor system. Moreover, MGKZ-2-based symmetric cell presented a high energy density of 27.6 Wh kg(-1) at 159.9 W kg(-1), as well as long-term cycling stability due to its hierarchical pores to offer large ion-accessible surface area, efficient ion diffusion and electron transport pathways. (C) 2018 Elsevier B.V. All rights reserved.
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