Nitrogen doped carbon derived from polyimide/multiwall carbon nanotube composites for high performance flexible all-solid-state supercapacitors

Ultrahigh‐Areal‐Capacitance Flexible Supercapacitor Electrodes Enabled by Conformal P3MT on Horizontally Aligned Carbon‐Nanotube Arrays

“…As shown in Figure d, two prominent peaks can be found at ≈1307 and 1602 cm −1 , representing the D and G bands for CNTs. The D band expresses the vibration of the disordered carbon structure, while G band shows the sp 2 ‐bonded carbon atoms . The peak at 1430 cm −1 in Raman spectra can be attributed to the presence of P3MT, which is consistent with prior work …”

“…Generally, the design strategy for flexible electrodes includes two steps: 1) fabrication of freestanding and porous electrically conductive materials as flexible substrates; and 2) optional coating/growing pseudocapacitive materials on the flexible substrates to further increase the specific capacitance. In step 1, various flexible substrates have been utilized and studied including textiles, carbon nanotube (CNT) films, graphene paper, cellulose paper, and carbon fibers . For example, CNT buckypaper fabricated by vacuum filtration or electrospinning is one of the most promising flexible substrates, thanks to its high conductivity, high surface area, high flexibility, and superior compatibility with pseudocapacitive materials .…”

Homogeneous coating of carbon nanotubes with tailored N-doped carbon layers for improved electrochemical energy storage

“…In comparison, the I D /I G value was increased to 1.05 and 1.06 for N-CNT1 and N-CNT2, respectively, due to the introduction of disorder N-doped carbon coated on the surface of the CNT. 28,29 XPS spectra were further recorded to analyze the nitrogen content of the N-CNTs. As shown in Fig.…”

Optimal structuring of nitrogen-doped hybrid-dimensional nanocarbons for high-performance flexible solid-state supercapacitors

“…These values agreed well with the above comparison results by CV curves. Significantly, benefiting from its optimized constituents and superior structure configuration, the N-RGO-CNT-CBNP-P could achieve a much higher areal specific capacitance (Table S4 †) than those of other paper electrodes as well as many reported nanocarbon based flexible electrodes, [44][45][46][47] and even comparable to those of many metal oxide or conductive polymer based flexible electrodes. [48][49][50] For calculating the mass specific capacitances of N-RGO-CNT-CBNP, we assumed that the capacitance of a GC-Blank-P was equal to the capacitance of the two capping layers of an N-RGO-CNT-CBNP-P, and the capacitance of an N-RGO-CNT-CBNP-P was approximatively equal to the sum of capacitances of its interlayer and capping layers (Fig.…”

“…It can be seen that although a common polymer electrolyte and a simple symmetric structural configuration were used for fabricating the N-RGO-CNT-CBNP-P based FSSSC, the final power device still exhibited quite competitive power capabilities, superior to those of not only most of nanocarbon or heteroatom doped nanocarbon based supercapacitors, 44,52,53 but also even some metal oxide or conductive polymer based supercapacitors. 47,50 Areal specific energy/power could be more reasonable factors than gravimetric ones when evaluating the potential practicability of a FSSSC for wearable applications. Fig.…”