Preparation and supercapacitive performance of clew-like porous nanocarbons derived from sucrose by catalytic graphitization

Liu, Tiantian; Liu, Enhui; Ding, Rui; Luo, Zhaochu; Hu, Tianchang; Li, Zengpeng

doi:10.1016/j.electacta.2015.05.042

Cited by 41 publications

(15 citation statements)

References 35 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Similar observation was made by Liu et al for carbon spheres that were synthesized by hydrothermal treatment of a sucrose solution and subsequently graphitized in the presence of nickel-oxide particles. High-resolution TEM (HRTEM) images of the resulting particles showed that the graphite layers are arranged along the longitudinal axis of the fibers [37]. After the acidic washing process, neither XPS nor EDX showed, for g-NCS-850 and g-NCS-1000, Fe or Fe 3 C particles within the spheres, which are commonly found for the Fe-based catalytic graphitization of carbon [38].…”

Section: Results and Discussion 1 Synthesis And Structural/chemical Amentioning

confidence: 97%

Synthesis of amorphous and graphitized porous nitrogen-doped carbon spheres as oxygen reduction reaction catalysts

Wassner¹,

Eckardt²,

Reyer³

et al. 2020

Beilstein J. Nanotechnol.

View full text Add to dashboard Cite

Amorphous and graphitized nitrogen-doped (N-doped) carbon spheres are investigated as structurally well-defined model systems to gain a deeper understanding of the relationship between synthesis, structure, and their activity in the oxygen reduction reaction (ORR). N-doped carbon spheres were synthesized by hydrothermal treatment of a glucose solution yielding carbon spheres with sizes of 330 ± 50 nm, followed by nitrogen doping via heat treatment in ammonia atmosphere. The influence of a) varying the nitrogen doping temperature (550–1000 °C) and b) of a catalytic graphitization prior to nitrogen doping on the carbon sphere morphology, structure, elemental composition, N bonding configuration as well as porosity is investigated in detail. For the N-doped carbon spheres, the maximum nitrogen content was found at a doping temperature of 700 °C, with a decrease of the N content for higher temperatures. The overall nitrogen content of the graphitized N-doped carbon spheres is lower than that of the amorphous carbon spheres, however, also the microporosity decreases strongly with graphitization. Comparison with the electrocatalytic behavior in the ORR shows that in addition to the N-doping, the microporosity of the materials is critical for an efficient ORR.

show abstract

Section: Results and Discussion 1 Synthesis And Structural/chemical Amentioning

confidence: 97%

Synthesis of amorphous and graphitized porous nitrogen-doped carbon spheres as oxygen reduction reaction catalysts

Wassner¹,

Eckardt²,

Reyer³

et al. 2020

Beilstein J. Nanotechnol.

View full text Add to dashboard Cite

show abstract

“…Aer removal of inorganic impurities, L-S-PC was obtained. Compared with undoped porous carbon prepared by carbonization of sucrose (PC-S), 36 L-S-PC shows higher specic capacitance due to the particular hierarchical structure, which contains micropores as well as many macropores and mesopores. This approach of synthesis of sulfur-doped porous carbon not only provides an economical material for EDLCs, but also supplies a green alternative technique to those using toxic sulfur precursors.…”

mentioning

confidence: 99%

Hierarchical S-doped porous carbon derived from by-product lignin for high-performance supercapacitors

Tian

Liu

et al. 2017

RSC Adv.

View full text Add to dashboard Cite

For the first time, hierarchical S-doped porous carbon was fabricated using sodium lignosulfonate as a carbon and sulfur precursor through a simple template technique. , excellent rate performance with 73% capacitance retention after a current density increasing from 0.5 to 20 A g À1 and cycling stability, with 97% capacitance retention after 10 000 cycles.Additionally, a symmetric supercapacitor based on S-PC-L-900 delivers a high energy density (6.9 W h kg À1) at 50 W kg À1.

show abstract

“…Notably, as the catalyst loading increased, the value of I D /I G follows the order: EPGC-800-2 < EPGC-800-3 < EPGC-800-1, where EPGC-800-2 had the highest graphitization degree, indicating that the addition of optimal amount of FeC 2 O 4 benecially affects the graphitization degree, whereas excessive FeC 2 O 4 addition leads to some damage to the graphitic structure, and this phenomenon was consistent with T. Liu et al work. 37 Moreover, EPC without Fe addition had the highest I D /I G value, conrming that Fe addition is important for catalyzing graphitization. In addition, an obvious 2D peak was observed at $2700 cm À1 for EPGC-800-1, EPGC-800-2, EPGC-800-3, EPGC-900-2, and EGC but not in the case of EPGC-700-2 and EPC, where the 2D peak is a typical characteristic peak of the graphitic structure.…”

Section: Materials Characterizationmentioning

confidence: 97%

One-step preparation of eggplant-derived hierarchical porous graphitic biochar as efficient oxygen reduction catalyst in microbial fuel cells

et al. 2021

View full text Add to dashboard Cite

show abstract

Preparation and supercapacitive performance of clew-like porous nanocarbons derived from sucrose by catalytic graphitization

Cited by 41 publications

References 35 publications

Synthesis of amorphous and graphitized porous nitrogen-doped carbon spheres as oxygen reduction reaction catalysts

Synthesis of amorphous and graphitized porous nitrogen-doped carbon spheres as oxygen reduction reaction catalysts

Hierarchical S-doped porous carbon derived from by-product lignin for high-performance supercapacitors

One-step preparation of eggplant-derived hierarchical porous graphitic biochar as efficient oxygen reduction catalyst in microbial fuel cells

Contact Info

Product

Resources

About