Additional file 1 of Hierarchical Porous Carbon with Interconnected Ordered Pores from Biowaste for High-Performance Supercapacitor Electrodes
Creators: name: Bai, Xiaoxia
name: Wang, Zhe
name: Luo, Jingying
name: Wu, Weiwei
name: Liang, Yanping
name: Tong, Xin
name: Zhao, Zhenhuan
Publisher: name: figshare
Year: 2020
Subjects: Space Science
Chemical Sciences not elsewhere classified
Biological Sciences not elsewhere classified
Science Policy
Computational Biology

description: Figure S1. Typical SEM images of the as-prepared OMC carbon samples at (a) 700 oC, (b) 800 oC, (c) 900 oC. Figure S2. Typical TEM image of the as-prepared carbon sample from the direct carbonization of lignosulphonate without the use of silica template. Figure S3. (a) The isotherm curves of nitrogen adsorption/desorption and (b) pore size distribution of the prepared OMC carbon samples at 700 oC, 800 oC, 900 oC. Figure S4. (a) The isotherm curves of nitrogen adsorption/desorption and (b) pore size distribution of the prepared OMC carbon sample at 1000 oC. Figure S5. SEM image of the HOPC carbon sample prepared from the chemical activation using OMC-900. Figure S6. (a) The isotherm curves of nitrogen adsorption/desorption and (b) pore size distribution of the HOPC carbon sample. Figure S7. Representative molecular structure of sodium lignosulphonate. Figure S8. The FTIR spectra of the as-prepared KIT-6 silica template, the sodium lignosulphonate and the KIT-6 template loaded with lignosulphonates (Lig-silica). Figure S9. XPS characterization of the as-prepared carbon samples. (a) the survey scan curves, and (b) the C1s spectra of the lignin-carbon from the carbonization of lignosulphonate without the use of template, and the C1s spectra of (c) OMC-700, (d) OMC-800, (e) OMC-900 and (d) the HOPC sample. Figure S10. CV profile and the specific capacitance of the carbon sample prepared by the direct carbonization of lignosulphonate without the use of silica template. Figure S11. CV profile of the OMC carbon samples (a) OMC-700, (b) OMC-800, (c) OMC-900, (d) OMC-1000, and the HOPC sample. Figure S12. The Nyquist plots of impedance in the frequency range of 1 MHz – 0.01 Hz. The insert refers to the corresponding equivalent circuit. The equivalent circuit contains an ohmic resistance Rs, which includes the contact resistance of leads, the bulk solution resistance and the sheet resistance of the carbon film, a charge transfer capacitance Cct which is in parallel with the charge transfer resistance Rct, and a Warburg diffusion element (W) attributed to the diffusion of electrolyte ions, and the electrical double layer capacitance Cdl at the low frequency region. Figure S13. (a) The real part of the capacitance Creal as a function of frequency and (b) the imaginary part of the capacitance Cimage as a function of the frequency of the OMC carbon sample and the HOPC sample. Figure S14. Nyquist plots of the HOPC symmetric supercapacitor. The insert refers to the magnified Nyquist plots to clearly show the ohmic resistance and charge transfer resistance at high frequency and medium frequency region, respectively. Figure S15 The phase angle as the function of frequency of the HOPC symmetric supercapacitor. Figure S16. Creal and Cimage as the function of frequency of the HOPC symmetric supercapacitor. Figure S17. Specific capacitance as a function of cycle numbers showing the capacitance retention of the HOPC symmetric supercapacitor. Table S1. The specific surface area and pore volume of as-synthesized OMC-700, OMC-800, OMC-900 and HOPC. Table S2. Comparison of the specific capacitances of synthesized HOPC electroactive material with recently reported carbonaceous materials. (DOCX 2485 kb)