Self N-Doped Porous Interconnected Carbon Nanosheets Material for Supercapacitors

Zhao, Jing; Gong, Junhua; Li, Yiju; Cheng, Kui; Ye, Ke; Zhu, Kai; Yan, Jun; Cao, Dianxue; Wang, Guiling

doi:10.6023/a17090422

Cited by 22 publications

(8 citation statements)

References 15 publications

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“…Environmentally friendly energy conversion/storage devices are urgently needed to solve the global energy crisis. − Direct borohydride-hydrogen peroxide fuel cells (DBHPFC), a kind of liquid fuel cell, with a theoretically open circuit potential of 3.01 V, is expected to apply in our society. , Theoretically, the complete electrooxidation of NaBH 4 will release 8e – . However, due to the inevitable hydrolysis of borohydride (eq ) on the electrode, the released electrons are usually less than 8e – . , Thus, anode catalysts combine good performance and high utilization of BH 4 – are urgently needed in the practical application of DBHPFC. …”

Section: Introductionmentioning

confidence: 99%

A Novel Anode for Direct Borohydride-Hydrogen Peroxide Fuel Cell: Au Nanoparticles Decorated 3D Self-Supported Reduced Graphene Oxide Foam

Song

Huang

et al. 2019

ACS Sustainable Chem. Eng.

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A novel anode material of Au nanoparticles grown on a self-supported reduced graphene oxide foam is successfully fabricated in this work. Characterization methods like X-ray diffraction pattern, scanning electron microscope, and transmission electron microscope are employed to research the chemical component and surface morphology of the prepared electrode. Also, the electrochemical performance of the electrocatalyst on NaBH4 oxidation is detailed researched in this work. As-prepared anode material exhibits good catalytic activity (661 mA·cm–2) in 2 mol·L–1 NaOH, 0.4 mol·L–1 NaBH4. Besides, low activation energy, small charge transfer impedance, and high fuel utilization are obtained during the oxidation of NaBH4 on the prepared catalyst. Mechanism research shows that the oxidation of NaBH4 is the first order reaction, and the exchanged electrons number is evaluated as 7.2 on the prepared electrode. In addition, power density of 60 mW·cm–2, as well as good stability, is obtained on the assembled fuel cell. All these results are indicating that the as-prepared catalyst is an efficient anode catalyst for direct borohydride-hydrogen peroxide fuel cell.

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Section: Introductionmentioning

confidence: 99%

A Novel Anode for Direct Borohydride-Hydrogen Peroxide Fuel Cell: Au Nanoparticles Decorated 3D Self-Supported Reduced Graphene Oxide Foam

Song

Huang

et al. 2019

ACS Sustainable Chem. Eng.

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“…This will increase the carbon surface affinity to the electrolyte and ionaccessible surface area. 46,47 For electrical double layer capacitors (EDLCs), the pore structures exert pivotal roles as well in determining the capacitance performance. 38,48,49 Thus, N 2 adsorption/desorption measurements have been conducted to analyze the surface area and porosity structure of the as-obtained N,S-hPGNs.…”

Section: Resultsmentioning

confidence: 99%

“…On the other hand, the N and S dual-doped strategy endows the N,S-hPGNs with outstanding wettability as demonstrated in Figure a. This will increase the carbon surface affinity to the electrolyte and ion-accessible surface area. , …”

Section: Resultsmentioning

confidence: 99%

N, S Codoped Hierarchical Porous Graphene Nanosheets Derived from Petroleum Asphalt via in Situ Texturing Strategy for High-Performance Supercapacitors

Yang

Deng

Hou

et al. 2019

Ind. Eng. Chem. Res.

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A facile yet rational strategy is highly desired for the synthesis of high-value-added carbon materials from cheap petroleum asphalt. Here, we develop an in situ texturing strategy for the synthesis of nitrogen and sulfur codoped hierarchical porous graphene nanosheets (N,S-hPGNs) by using dual-functional graphitic carbon nitride templates. The synthetic strategy avoids using additional sulfur sources and a cumbersome acid washing process. The well-developed pores and abundant heteroatoms endow the N,S-hPGNs with a high capacity of 302 F g–1 at 1 A g–1 and an excellent cycling stability. Moreover, the as-fabricated supercapacitors display a high energy density of 10.42 Wh kg–1 at the power density of 250 W kg–1, outperforming other previous carbon materials from petroleum asphalt. This work not only demonstrates the great potential of N,S-hPGNs for supercapacitors, but also provides a new avenue for the high-value-added utilization of petroleum asphalt.

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“…Considerable efforts have been made to study the electrochemical performance of carbon materials for supercapacitor applications, such as carbon nanotube, carbon nanosheets, graphene sheets, carbon aerogels, carbon fiber, activated carbons (ACs), etc . [ 8‐14 ] Among various carbon materials, ACs are considered as one group of the promising supercapacitor material due to their low manufacturing cost, abundant porous structure and high specific surface area. [ 15 ]…”

Section: Background and Originality Contentmentioning

confidence: 99%

Preparation and Characterization of Porous Carbon from Mixed Leaves for High‐Performance Supercapacitors

Yang

Chen

et al. 2020

Chin. J. Chem.

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Main observation and conclusion With the increasing demand of sustainable and eco‐friendly resources, it is very attractive to use waste leaves for activated carbon (AC) preparation that can be used in supercapacitors. Considering the practically collected leaves are commonly in mixed nature, and extra efforts are needed to sort these mixtures, we here report the first preparation of AC using mixed leaves from different plants, including Platanus acerifolia (PA), Firmiana platanifolia (FP) and Pistia stratiotes (PS), and compared the results with single leaves‐derived AC materials. These leave‐derived AC samples were characterized with FESEM, EDS, FTIR and Raman spectroscopy, and electrochemical tests. The AC derived from mixed leaves (PA3FP1PS2AC) showed a good specific capacitance of 246 F·g−1 at 1 A·g−1 in aqueous 3 mol·L–1 KOH. This sample further showed the largest specific capacitance of 201 F·g−1 at 5 A·g−1, as compared with the non‐mixed AC samples, and a good stability of 100.0% capacitance retention over 1000 cycles. Utilizing mixed leaves for AC preparation is not only demonstrated to be a promising approach of low cost and high‐performance AC production for supercapacitor applications, but may also help environmental protection by reducing the invasive species problem.

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Self N-Doped Porous Interconnected Carbon Nanosheets Material for Supercapacitors

Cited by 22 publications

References 15 publications

A Novel Anode for Direct Borohydride-Hydrogen Peroxide Fuel Cell: Au Nanoparticles Decorated 3D Self-Supported Reduced Graphene Oxide Foam

A Novel Anode for Direct Borohydride-Hydrogen Peroxide Fuel Cell: Au Nanoparticles Decorated 3D Self-Supported Reduced Graphene Oxide Foam

N, S Codoped Hierarchical Porous Graphene Nanosheets Derived from Petroleum Asphalt via in Situ Texturing Strategy for High-Performance Supercapacitors

Preparation and Characterization of Porous Carbon from Mixed Leaves for High‐Performance Supercapacitors

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