Synthesis and characterization of covalently-grafted

graphene-polyaniline nanocomposites and its use in a

supercapacitor

Mukesh Kumar,1 Kuldeep Singh,1 Sundeep K. Dhawan,2 Kannan Tharanikkarasu,3 Jin Suk

Chung,1 Byung-Seon Kong,4 Seung Hyun Hur1,*

1School of Chemical Engineering and Bioengineering, University of Ulsan, Daehakro 102,

Namgu, Ulsan, 680-749, Korea.

2Polymeric & Soft Materials Section, National Physical Laboratory, New Delhi –110 012, India.

3Department of Chemistry, Pondicherry University (Central University), R V Nagar, Kalapet,

Puducherry - 605 014, India.

4Advanced Energy Materials Team, KCC Central Research Institute, Kyunggi-do 446-912,

Korea

* Corresponding author, E-mail: shhur@ulsan.ac.kr

Figure S1. UV-Vis plots of (a) GO, (b) DGO-COOH, (c) RDG-NH2, (d) PANI, (e) RDG-PANI-

2

Figure S2: N1s core level XPS spectrum of RDG-PANI-2.

Figure S3. TGA thermograms for (a) graphite, (b) GO, (c) DGO-COOH, (d) RDG-NH2, (e)

PANI (f) RDG-PANI-2.

Figure S4: CV curves at different scan rates for (a) RDG-NH2 (b) PANI (c) RDG-PANI-2 (d) RDG-PANI-4

Figure S5: Dependency of specific capacitance as a function of scan rates studied by CV measurements.