Interlayer hydrogen-bonded covalent organic frameworks as high-performance supercapacitors
| Title | Interlayer hydrogen-bonded covalent organic frameworks as high-performance supercapacitors |
| Publication Type | Journal Article |
| Year of Publication | 2018 |
| Authors | Halder, A, Ghosh, M, Khayum, AM, Bera, S, Addicoat, M, Sasmal, HSekhar, Karak, S, Kurungot, S, Banerjee, R |
| Journal | Journal of the American Chemical Society |
| Volume | 140 |
| Issue | 35 |
| Pagination | 10941-10945 |
| Date Published | SEP |
| Type of Article | Article |
| Abstract | Covalent organic frameworks (COFs) have emerged as promising electrode materials in supercapacitors (SCs). However, their insoluble powder-like nature, poor capacitive performance in pristine form, integrated with inferior electrochemical stability is a primary concern for their long-term use in electrochemical devices. Keeping this in perspective, herein we report a redox active and hydrogen bonded COF with ultrahigh stability in conc. H2SO4 (18 M), conc. HCl (12 M) and NaOH (9 M). The as-synthesized COF fabricated as thin sheets were efficiently employed as a free-standing supercapacitor electrode material using 3 M aq. H2SO4 as an electrolyte. Moreover, the pristine COF sheet showcased outstanding areal capacitance 1600 mF cm(-2) (gravimetric 169 F g(-1)) and excellent cyclic stability (>100 000) without compromising its capacitive performance or Coulombic efficiency. Moreover, as a proof-of-concept, a solid-state supercapacitor device was also assembled and subsequently tested. |
| DOI | 10.1021/jacs.8b06460 |
| Type of Journal (Indian or Foreign) | Foreign |
| Impact Factor (IF) | 14.357 |
Divison category:
Physical and Materials Chemistry
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