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A Self‐Healing Metal–Organic Hydrogel for an All‐Solid Flexible Supercapacitor
Author(s) -
Karan Chandan Kumar,
Mallick Sourav,
Raj C. Retna,
Bhattacharjee Manish
Publication year - 2019
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.201903561
Subject(s) - supercapacitor , electrolyte , polyvinyl alcohol , materials science , capacitance , chemical engineering , metal ions in aqueous solution , zinc , activated carbon , metal , chemistry , electrode , organic chemistry , composite material , metallurgy , adsorption , engineering
A zinc containing metal–organic gel (Zn‐MOG) with embedded free ions, which exhibits self‐healing properties, has been synthesized for application in supercapacitors. The activated carbon‐based flexible supercapacitor device with the MOG electrolyte has a broad potential window of 2.1 V, with high retention of specific capacitance compared to the traditional polyvinyl alcohol (PVA)‐based gel. The Zn‐MOG does not require an additional electrolyte. The sodium and sulphate ions embedded in the MOG are sufficient enough for the charge storage.