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Issue 10, 2020
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A nickel coordination polymer derived from 1,2,4,5-tetraaminobenzene for fast and stable potassium battery anodes

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Abstract

We report the application of a Ni-based coordination polymer derived from 1,2,4,5-tetraaminobenzene (P1) as a fast and stable potassium battery anode. In a voltage range of 0.5–2.0 V vs. K+/K, a reversible capacity of 220 mA h g−1 was obtained at 0.1 A g−1. Even with a relatively high electrode loading of 5.0 mg cm−2 and only 10 wt% carbon additive, 118 mA h g−1 was still retained at 1 A g−1. For thinner electrodes with 30 wt% carbon, a capacity of up to 104 mA h g−1 was observed at 10 A g−1 (charging in ∼40 seconds). An areal capacity of up to 2.73 mA h cm−2 was demonstrated. The capacity fade at 1 A g−1 was only 4.4% after 200 cycles. Structure transformations of P1 during charge/discharge were studied using X-ray photoelectron spectroscopy and in situ X-ray diffraction.

Graphical abstract: A nickel coordination polymer derived from 1,2,4,5-tetraaminobenzene for fast and stable potassium battery anodes

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Article information


Submitted
02 Oct 2019
Accepted
23 Dec 2019
First published
26 Dec 2019

Chem. Commun., 2020,56, 1541-1544
Article type
Communication

A nickel coordination polymer derived from 1,2,4,5-tetraaminobenzene for fast and stable potassium battery anodes

R. R. Kapaev, I. S. Zhidkov, E. Z. Kurmaev, K. J. Stevenson and P. A. Troshin, Chem. Commun., 2020, 56, 1541
DOI: 10.1039/C9CC07748K

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