A High-Rate Two-Dimensional Polyarylimide Covalent Organic Framework Anode for Aqueous Zn-Ion Energy Storage Devices
Yu M, Chandrasekhar N, Raghupathy RKM, Ly KH, Zhang H, Dmitrieva E, Liang C, Lu X, Kühne TD, Mirhosseini H, Weidinger IM, Feng X (2020)
Publication Type: Journal article
Publication year: 2020
Journal
Book Volume: 142
Pages Range: 19570-19578
Journal Issue: 46
DOI: 10.1021/jacs.0c07992
Abstract
Rechargeable aqueous Zn-ion energy storage devices are promising candidates for next-generation energy storage technologies. However, the lack of highly reversible Zn2+-storage anode materials with low potential windows remains a primary concern. Here, we report a two-dimensional polyarylimide covalent organic framework (PI-COF) anode with high-kinetics Zn2+-storage capability. The well-organized pore channels of PI-COF allow the high accessibility of the build-in redox-active carbonyl groups and efficient ion diffusion with a low energy barrier. The constructed PI-COF anode exhibits a specific capacity (332 C g-1 or 92 mAh g-1 at 0.7 A g-1), a high rate capability (79.8% at 7 A g-1), and a long cycle life (85% over 4000 cycles). In situ Raman investigation and first-principle calculations clarify the two-step Zn2+-storage mechanism, in which imide carbonyl groups reversibly form negatively charged enolates. Dendrite-free full Zn-ion devices are fabricated by coupling PI-COF anodes with MnO2 cathodes, delivering excellent energy densities (23.9 ∼66.5 Wh kg-1) and supercapacitor-level power densities (133 ∼4782 W kg-1). This study demonstrates the feasibility of covalent organic framework as Zn2+-storage anodes and shows a promising prospect for constructing reliable aqueous energy storage devices.
Involved external institutions
Technische Universität Dresden
Germany (DE)
Universität Paderborn
Germany (DE)
Sun Yat-Sen University
China (CN)
Leibniz-Institut für Festkörper- und Werkstoffforschung Dresden e.V. (IFW) / Leibniz Institute for Solid State and Materials Research Dresden
Germany (DE)
Germany (DE)
Universität Paderborn
Germany (DE)
Sun Yat-Sen University
China (CN)
Leibniz-Institut für Festkörper- und Werkstoffforschung Dresden e.V. (IFW) / Leibniz Institute for Solid State and Materials Research Dresden
Germany (DE)
How to cite
APA:
Yu, M., Chandrasekhar, N., Raghupathy, R.K.M., Ly, K.H., Zhang, H., Dmitrieva, E.,... Feng, X. (2020). A High-Rate Two-Dimensional Polyarylimide Covalent Organic Framework Anode for Aqueous Zn-Ion Energy Storage Devices. Journal of the American Chemical Society, 142(46), 19570-19578. https://doi.org/10.1021/jacs.0c07992
MLA:
Yu, Minghao, et al. "A High-Rate Two-Dimensional Polyarylimide Covalent Organic Framework Anode for Aqueous Zn-Ion Energy Storage Devices." Journal of the American Chemical Society 142.46 (2020): 19570-19578.
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