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Mulberry Paper‐Based Supercapacitor Exhibiting High Mechanical and Chemical Toughness for Large‐Scale Energy Storage Applications
Author(s) -
Yun Tae Gwang,
Kim Donghyuk,
Kim SangMin,
Kim IlDoo,
Hyun Seungmin,
Han Seung Min
Publication year - 2018
Publication title -
advanced energy materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.08
H-Index - 220
eISSN - 1614-6840
pISSN - 1614-6832
DOI - 10.1002/aenm.201800064
Subject(s) - supercapacitor , materials science , pedot:pss , energy storage , toughness , power density , composite material , fabrication , carbon nanotube , electrochemistry , electrode , polymer , power (physics) , chemistry , physics , quantum mechanics , medicine , alternative medicine , pathology
In response to the demand for flexible and sustainable energy storage devices that exhibit high electrochemical performance, a supercapacitor system is fabricated using mulberry tree‐derived paper as a substrate and Poly(3,4‐ethylenedioxythiophene)‐poly(styrenesulfonate) (PEDOT:PSS) and carbon black as the active material. The mulberry paper‐based supercapacitor system demonstrates high energy density of 29.8–39.8 Wh kg −1 and power density of 2.8–13.9 kW kg −1 with 90.7% retention of its initial capacity over 15 000 charge–discharge cycles. In addition, the mulberry tree fibers are known to have superior mechanical strength and toughness and the mulberry paper‐based supercapacitor; as a result, exhibit high mechanical and chemical toughness; 99% of its initial capacity is retained after 100 repeated applications of bending strains, and twisting. 94% capacity retention is observed even after exposure to HCl and H 2 SO 4 acid solutions. The fabrication methodology of the mulberry‐based supercapacitor is highly scalable and could be stacked to increase the energy storage capacity, where operation of light‐emitting diode lights with a drive voltage of 12 V integrated in a wearable device is demonstrated.