Houttuynia-derived nitrogen-doped hierarchically porous carbon for high-performance supercapacitor

Porous bamboo‐like CNTs prepared by a simple and low‐cost steam activation for supercapacitors

“…35 Figure 1D shows the C 1s spectrum of ACNTs, which is divided into five peaks of various carbon at 284. 36 Infrared spectra ( Figure S2) also indicate the existence of oxygen-containing groups ( OH and COOH) on the outerwalls of ACNTs. A certain amount of OH and COOH provide the hydrophilic surface of the electrode, benefiting full contact with the electrolyte to improve its capacitive performance.…”

“…Though the precursor (SPNTs) was prepared by immersing PNTs in concentrated H 2 SO 4 , no S signal can be found in the XPS spectra of Cs and ACNTs because that the sulfonic groups leave at lower temperatures (320‐440°C) 35 . Figure 1D shows the C 1s spectrum of ACNTs, which is divided into five peaks of various carbon at 284.2 (CC and CC), 286.2 (COH), 288.0 (COC), 289.5 (CO) and 291.2 (OCO) eV 36 . Infrared spectra (Figure S2) also indicate the existence of oxygen‐containing groups (OH and COOH) on the outerwalls of ACNTs.…”

Evaluation of adsorptive desulfurization performance and economic applicability comparison of activated carbons prepared from various carbon sources

“…4, the C 1s peak of PUPW-ACA (A), CS-ACA (B), and PC-ACA (C) could be tted to four peaks centered at 284.6, 285.6, 287.6, and 288.9 eV, corresponding to another serial carbon chemical environments, i.e., sp 2 C, C-O, C]O, and O]C-O-. 38,47,48 And the C 1s peak of AT-ACA ( The XRD spectra of the four samples shown in Fig. 2 showed two broad peaks at 25.5 and 43.5 .…”

One-step production of N–O–P–S co-doped porous carbon from bean worms for supercapacitors with high performance

“…17 Moreover, both conductivity and wettability of carbon materials can be substantially promoted by introducing nitrogen into carbon skeleton, leading to better electrochemical performance. 18 Apart from N and O, another class of functional materials, including S, B and P, also possessing physio/chemical properties suitable for superior cell outputs. 6,19 In comparison to mono-heteroatom doping, multi-heteroatom doping can further enhance the overall performances of the carbon materials because of the synergetic interaction between different heteroatoms.…”

“…23,24 Among them, KOH exhibits many advantages, especially on forming uniform pore structure and large S BET , which was reported as among the most promising activating agent for producing porous carbon materials. 18,25,26 Moreover, this process is also suitable for large-scale production of carbon materials. Generally, chemical activation of carbon materials by KOH can be divided into one-pot process and hydrothermal/pre-carbonization plus KOH activation strategies (two-step mechanism).…”