Phenanthroline Covalent Organic Framework Electrodes for High-Performance Zinc-Ion Supercapattery
Kale, Vinayak Swamirao
Parvatkar, Prakash Tukaram
Alshareef, Husam N.
KAUST DepartmentMaterial Science and Engineering Program
Physical Science and Engineering (PSE) Division
Advanced Membranes and Porous Materials Research Center
KAUST Catalysis Center (KCC)
Imaging and Characterization Core Lab
Chemical Science Program
KAUST Grant NumberOSR-CRG2017-3379
Permanent link to this recordhttp://hdl.handle.net/10754/664535
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AbstractAqueous zinc-ion batteries and capacitors are potentially competitive grid-scale energy storage devices because of their great features such as safety, environmental friendliness, and low cost. Herein, a completely new phenanthroline covalent organic framework (PA-COF) was synthesized and introduced in zinc-ion supercapatteries (ZISs) for the first time. Our as-synthesized PA-COF shows a high capacity of 247 mAh g-1 at a current density of 0.1 A g-1, with only 0.38% capacity decay per cycle during 10â€»000 cycles at a current density of 1.0 A g-1. Although covalent organic frameworks (COFs) are attracting great attention in many fields, our PA-COF has been synthesized using a new strategy involving the condensation reaction of hexaketocyclohexanone and 2,3,7,8-phenazinetetramine. Detailed mechanistic investigations, through experimental and theoretical methods, reveal that the phenanthroline functional groups in PA-COF are the active zinc ion storage sites. Furthermore, we provide evidence for the cointercalation of Zn2+ (60%) and H+ (40%) into PA-COF using inductively coupled plasma atomic emission spectroscopy and deuterium solid-state nuclear magnetic resonance (NMR). We believe that this study opens a new avenue for COF material design for zinc-ion storage in aqueous ZISs.
CitationWang, W., Kale, V. S., Cao, Z., Kandambeth, S., Zhang, W., Ming, J., … Alshareef, H. N. (2020). Phenanthroline Covalent Organic Framework Electrodes for High-Performance Zinc-Ion Supercapattery. ACS Energy Letters, 5(7), 2256–2264. doi:10.1021/acsenergylett.0c00903
SponsorsResearch reported in this publication was supported by King Abdullah University of Science and Technology (KAUST) under Award Number OSR-CRG2017-3379.
PublisherAmerican Chemical Society (ACS)
JournalACS Energy Letters