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. 2019 Nov 20;11:101. doi: 10.1007/s40820-019-0332-7

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© The Author(s) 2019

Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.

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Fig. 3 — a Comparison of CV curves of Ni(OH)₂@CNTF, KNHCF powder, and KNHCF@CNTF at a scan rate of 5 mV s⁻¹. b GCD curves of KNHCF@CNTF at various current densities from 0.05 to 5.0 A cm⁻³. c Comparison of rate performance of KNHCF powder and KNHCF@CNTF. d CV curves at various scan rates, e corresponding b value, and f long-term cycle stability at 0.8 A cm⁻³ of the KNHCF@CNTF