Reed straw derived active carbon/graphene hybrids as
sustainable high performance electrodes for advanced
supercapacitors
Qinxing Xie • Anran Zheng • Sibo Zhai • Shihua Wu • Chao Xie • Yufeng Zhang • Yunfei Guan
Q. Xie* • A. Zheng • S. Zhai • Y. Zhang*
Tianjin Key Laboratory of Fiber Modification and Functional Fibers, School of Materials Science and Engineering,
Tianjin Polytechnic University, Tianjin 300387, China
C. Xie
School of Materials Science and Engineering, Shandong University of Technology, Zibo 255049, China
S. Wu •Y. Guan
Department of Chemistry, Nankai University, Tianjin 300017, China
Corresponding author. Tel.: +86 22 83955079, Fax: +86 22 83955055, E-mail: qxxie@yahoo.com
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Figure S1. CV curves of AC@GR5 (a-b) and AC@GR6 (c-d) at various scan rates from 5 to
400 mV s-1, respectively
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Figure S2. GCD curves of AC@GR5 (a-b) and AC@GR6 (c-d) at various current densities from
0.1 to 20 A g-1.
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Table S1. The surface composition of AC@GR hybrids analyzed by XPS
C1s
O1s
C/O ratio
AC/GR5
93.80%
6.20%
15.1
AC/GR6
95.01%
4.99%
19.0
AC/GR7
95.33%
4.67%
20.4
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