@article {45391,
	title = {Interlayer hydrogen-bonded covalent organic frameworks as high-performance supercapacitors},
	journal = {Journal of the American Chemical Society},
	volume = {140},
	year = {2018},
	month = {SEP},
	pages = { 10941-10945},
	type = {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},
	author = {Halder, Arjun and Ghosh, Meena and Khayum, Abdul M. and Bera, Saibal and Addicoat, Matthew and Sasmal, Himadri Sekhar and Karak, Suvendu and Kurungot, Sreekumar and Banerjee, Rahul}
}
@article {46761,
	title = {In situ cross-linked nonaqueous polymer electrolyte for zinc-metal polymer batteries and hybrid supercapacitors},
	journal = {Small},
	volume = {16},
	year = {2020},
	month = {SEP},
	pages = {2002528},
	type = {Article},
	abstract = {<p>This work reports the facile synthesis of nonaqueous zinc-ion conducting polymer electrolyte (ZIP) membranes using an ultraviolet (UV)-light-induced photopolymerization technique, with room temperature (RT) ionic conductivity values in the order of 10(-3)S cm(-1). The ZIP membranes demonstrate excellent physicochemical and electrochemical properties, including an electrochemical stability window of \&gt;2.4 V versus Zn|Zn(2+)and dendrite-free plating/stripping processes in symmetric Zn||Zn cells. Besides, a UV-polymerization-assisted in situ process is developed to produce ZIP (abbreviated i-ZIP), which is adopted for the first time to fabricate a nonaqueous zinc-metal polymer battery (ZMPB; VOPO4|i-ZIP|Zn) and zinc-metal hybrid polymer supercapacitor (ZMPS; activated carbon|i-ZIP|Zn) cells. The VOPO(4)cathode employed in ZMPB possesses a layered morphology, exhibiting a high average operating voltage of approximate to 1.2 V. As compared to the conventional polymer cell assembling approach using the ex situ process, the in situ process is simple and it enhances the overall electrochemical performance, which enables the widespread intrusion of ZMPBs and ZMPSs into the application domain. Indeed, considering the promising aspects of the proposed ZIP and its easy processability, this work opens up a new direction for the emergence of the zinc-based energy storage technologies.</p>
},
	keywords = {nonaqueous electrolytes, polymer electrolytes, postlithium batteries, Supercapacitors, zinc-metal batteries},
	issn = {1613-6810},
	doi = {10.1002/smll.202002528, Early Access Date = JUL 2020},
	author = {Vijayakumar, Vidyanand and Ghosh, Meena and Kurian, Maria and Torris, Arun and Dilwale, Swati and Badiger, V. Manohar and Winter, Martin and Nair, Jijeesh Ravi and Kurungot, Sreekumar}
}
@article {48356,
	title = {Influence of ice templating on oxygen reduction catalytic activity of metal-free heteroatom-doped mesoporous carbon derived from polypyrrole for zinc-air batteries},
	journal = {Energy Technology},
	volume = {10},
	year = {2022},
	month = {DEC},
	type = {Article},
	abstract = {<p>
	The development of highly active, cost-effective, and durable, noble metal-free oxygen reduction electrocatalysts is inevitable for the full-fledged implementation of fuel cells and zinc-air batteries. This work reports the synthesis of heteroatom (N, P, S)-doped metal-free mesoporous carbon-based electrocatalyst derived from polypyrrole by combining the ice templating, freeze-drying, and carbonization processes. The correlation between the structure and electrochemical activity of the polypyrrole-derived carbon-based electrocatalyst in the presence and absence of ice templating is investigated. The optimized electrocatalyst, aided by the ice-templating and freeze-drying step, shows an onset and half-wave potential (E-1/2) of 0.94 and 0.78 V vs reversible hydrogen electrode, respectively, in an alkaline electrolyte (0.1 m KOH). Later, the application of the optimized electrocatalyst is demonstrated in a primary zinc-air battery (ZAB) cell. The results prove that the ZAB device performance based on the homemade catalyst is on par with that of the state-of-the-art Pt/C cathode. The catalyst performance is correlated with the heteroatom doping and the enhanced porosity of the sample benefitted from ice templating. Ultimately, this work depicts a facile and rational synthesis of a truly metal-free electrocatalyst for the primary ZABs that can be a potential replacement for state-of-the-art systems.</p>
},
	keywords = {metal-free electrocatalysts, oxygen reduction reaction, zinc-air batteries},
	issn = {2194-4288},
	doi = {10.1002/ente.202200840},
	author = {Kurian, Maria and Ghosh, Meena and Vijayakumar, Vidyanand and Puthiyaveetil, Priyanka Pandinhare and Torris, Arun and Kurungot, Sreekumar}
}
