Zhuofeng DING, Yongqiang YANG, Zaijun LI. Synthesis and Supercapacitor Performance of Histidine-functionalized Carbon Dots/Graphene Aerogel [J]. Journal of Inorganic Materials, 2020, 35(10): 1130
- Journal of Inorganic Materials
- Vol. 35, Issue 10, 1130 (2020)
1. Schematic illustration of His-CDs/GA preparation
S1. Size distribution of His-CDs
S2. XRD pattern (a) and IR spectrum (b) of His-CDs
2. TEM image of His-CDs (Inset: HRTEM image)
3. SEM images of GA(a), His-CDs/GA-1(b), His-CDs/ GA-2(c), and His-CDs/GA-3(d), and TEM images of GA(e) and His-CDs/GA-2(f)
S3. Raman spectra of GA, His-CDs/GA-1, His-CDs/GA-2 and His-CDs/GA-3
S4. N2 absorption-desorption isotherms (a) and pore size distributions (b) of GA, His-CDs/GA-1, His-CDs/GA-2 and His-CDs/GA-3
4. XRD patterns of GA, His-CDs/GA-1, His-CDs/GA-2 and His-CDs/GA-3
5. Total survey XPS spectra (a) of GA and His-CDs/GA-2 and N 1s spectrum (b) of His-CDs/GA-2
S5. C1s (a) and O1s (b) XPS spectra of His-CDs/GA-2
6. CV curves (a) at 10 mV·s-1 and GCD curves (b) at 1 A·g-1 of GA, His-CDs/GA-1, His-CDs/GA-2, and His-CDs/ GA-3
S6. AC impedance plots of 4 electrodes with inset showing the equivalent ciruit from the EIS measurements
S7. CV curves (a) at different scan rates and GCD curves (b) at different current densities of His-CDs/GA-2//His-CDs/ GA-2 symmetrical supercapacitor
7. CV curves at different scan rates (a) and GCD curves at different current densities (b) of His-CDs/GA-2; Rate capabilities of GA, His-CDs/GA-1, His-CDs/GA-2 and His-CDs/GA-3 (c); Cycling performances of GA and His-CDs/GA-2 at 10 A·g-1 (d)
S8. Cycling performance at 5 A·g-1 over 20000 cycles of His-CDs/GA-2//His-CDs/GA-2 symmetrical supercapacitor
8. Ragon plots of His-CDs/GA-2//His-CDs/GA-2
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Table 1. Comparison of the specific capacitance of His-CDs/GA-2 and other graphene-based electrodes
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