Untangling the respective effects of heteroatom-doped carbon materials in batteries, supercapacitors and the ORR to design high performance materials

Feng, Xin; Bai, Ying; Liu, Mingquan; Liu, Ying; Yang, Hongxun; Wang, Xinran; Wu, Chuan

doi:10.1039/d1ee00166c

Cited by 434 publications

(270 citation statements)

References 423 publications

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“…56 (3) The pyridinic/ pyrrolic N species and some oxygen-containing groups are electrochemical active sites for providing pseudocapacitance (as shown in Figure S14). 57 It is agreeable that the N and O contents are still abundant even under CO 2 activation for a long time, suggesting our promising fabrication strategy. Moreover, it is not hard to imagine that extra other heteroatoms doping (such as S, B, and P) and nanoscale electrocatalyst loading in N-PCM-9 can be achieved through precursors regulation, providing a composition controllable preparation route.…”

Section: The Microstructure and Composition Of N-pcm-xmentioning

confidence: 61%

Nature‐inspired porous multichannel carbon monolith: Molecular cooperative enables sustainable production and high‐performance capacitive energy storage

Liu

Zheng

et al. 2021

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The advancement of supercapacitors (SCs) is closely bound up with the breakthrough of rational design of energy materials. Freestanding and thick carbon (FTC) materials with well-organized porous structure is promising SC electrode delivering high areal capacitive performance. However, controllable and sustainable fabrication of such FTC electrode is still of great challenges. Inspired by natural honeycombs with cross-linked multichannel structure, herein, an innovative molecular-cooperative-interaction strategy is elaborately provided to realize honeycomb-like FTC electrodes. The nitrogen-doped porous carbon monolith (N-PCM) is obtained with advantages of interconnect pore structure and abundant nitrogen doping. Such strategy is based on naturally abundant molecular precursors, and free of pore-templates, expensive polymerization catalyst, and dangerous reaction solvent, rendering it a sustainable and cost-effective process. Systematic control experiments reveal that strong interactions among molecular precursors promise the structural stability of N-PCM during carbonization, and rational selection of molecular precursors with chemical blowing features is key step for well-developed honeycomb-like pore structure. Interestingly, the optimized sample exhibits hierarchical pore structure with specific surface area of 626.4 m 2 g À1 and rational N-doping of 7.01 wt%. The derived SC electrode with high mass loading of 40.1 mg cm À2 shows an excellent areal capacitance of 3621 mF cm À2 at 1 mA cm À2 and good rate performance with 2920 mF cm À2 at 25 mA cm À2 . Moreover, the constructed aqueous symmetric SC and quasi-solid-state SC produce high energy densities of 0.32 and 0.27 mWh cm À2 , respectively. We believe that such a composition/microstructure controllable method can promote the fabrication and development of other thick electrodes for energy storage devices.

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Section: The Microstructure and Composition Of N-pcm-xmentioning

confidence: 61%

Nature‐inspired porous multichannel carbon monolith: Molecular cooperative enables sustainable production and high‐performance capacitive energy storage

Liu

Zheng

et al. 2021

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“…These data indicate that the mass specific capacitance is roughly 377 F/g. This value is higher than the specific capacitance of several high performance electrode materials [44,45] as shown in Table 4. Comparison of the gravimetric capacitances listed in Table 3 leads us to the conclusion that practically only doped graphene and B containing carbons display a higher value than our biomassbased CA carbon.…”

Section: Electrocatalytic Applicationmentioning

confidence: 68%

Biomass Related Highly Porous Metal Free Carbon for Gas Storage and Electrocatalytic Applications

et al. 2021

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In this paper we report the synthesis of a N, S co-doped metal free carbon cryogel obtained from a marine biomass derived precursor using urea as nitrogen source. Natural carrageenan intrinsically contains S and inorganic salt. The latter also serves as an activating agent during the pyrolytic step. The overall 11.6 atomic % surface heteroatom concentration comprises 5% O, 4.6% N and 1% S. The purified and annealed final carbon (CA) has a hierarchical pore structure of micro-, meso- and macropores with an apparent surface area of 1070 m2/g. No further treatment was applied. The gas adsorption potential of the samples was probed with H2, CO2 and CH4, while the electrocatalytic properties were tested in an oxygen reduction reaction. The atmospheric CO2 and CH4 storage capacity at 0 °C in the low pressure range is very similar to that of HKUST-1, with the CO2/CH4 selectivity below 20 bar, even exceeding that of the MOF, indicating the potential of CA in biogas separation. The electrocatalytic behavior was assessed in an aqueous KOH medium. The observed specific gravimetric capacitance 377 F/g was exceeded only in B, N dual doped and/or graphene doped carbons from among metal free electrode materials. The CA electrode displays almost the same performance as a commercial 20 wt% Pt/C electrode. The oxygen reduction reaction (ORR) exhibits the 4-electron mechanism. The 500-cycle preliminary stability test showed only a slight increase of the surface charge.

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“…al. [149] summed up heteroatom-doped carbon materials as some of the most significant candidates for usage in various applications, including oxygen reduction reactions, SCs, and batteries. They concluded that the doping content and position of the doping affect the material's performance in electrocatalysis and energy storage conversion.…”

Section: Mechanisms Of High-performance S-doped Carbon-based Scsmentioning

confidence: 99%

Preparation of Sulfur‐doped Carbon for Supercapacitor Applications: A Review

et al. 2021

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als-based SCs have demonstrated enhanced surface wettability, improved conductivity, and induced pseudocapacitance effect, thereby delivering improved specific energy and specific power. Many reports on S-doped carbon for SC applications have been published, but there is no specific Review on the preparation of S-doped carbon for SC applications. This Review focuses on recent developments in the field of SC electrodes made from Sdoped carbon materials. Herein, the preparation methods and applications of S-doped carbon for SCs were summarized following a brief discussion of different electrochemical characterization techniques of SCs. Finally, the challenges of S-doped carbon materials and their potential prospects were discussed to give crucial insights into the favorable factors for future innovations of SC electrodes. This Review aims to provide insight for further research on the preparation of S-doped carbon for electrochemical energy storage applications.

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Untangling the respective effects of heteroatom-doped carbon materials in batteries, supercapacitors and the ORR to design high performance materials

Abstract: Heteroatom-doped carbon materials (HDCMs) have been widely studied as one of the most prominent material candidates for a wide range of applications, such as batteries, supercapacitors (SCs) and ORR. In...

Cited by 434 publications

References 423 publications

Nature‐inspired porous multichannel carbon monolith: Molecular cooperative enables sustainable production and high‐performance capacitive energy storage

Nature‐inspired porous multichannel carbon monolith: Molecular cooperative enables sustainable production and high‐performance capacitive energy storage

Biomass Related Highly Porous Metal Free Carbon for Gas Storage and Electrocatalytic Applications

Preparation of Sulfur‐doped Carbon for Supercapacitor Applications: A Review

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