Nitrogen-doped activated carbon for a high energy hybrid supercapacitor

Li, Bing; Dai, Fang; Xiao, Qiangfeng; Yang, Li; Shen, Jingmei; Zhang, Cunman; Cai, Mei

doi:10.1039/c5ee03149d

Cited by 967 publications

(433 citation statements)

References 35 publications

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“…The C 1s XPS spectra (Fig. S3c) could be deconvoluted into three peaks: sp 2 -sp 2 C (284.0 eV), -C-N (284.9 eV), and C=O (288.0 eV) [12,15]. The N 1s core level (Fig.…”

Section: Resultsmentioning

confidence: 99%

“…S5 were used to elucidate the electronic structure of the core levels, with peaks of sp 2 C at 284.5 eV, -C-N at 285.2 eV, and C=O at 288.0 eV in the C 1s region, along with pyridinic N (398.5 eV) and pyrrolic N (400.2 eV) in the N 1s region, demonstrating the successful combination of these elements [15,22].…”

Section: Resultsmentioning

confidence: 99%

“…Since then, insertion-type materials such as Li4Ti5O12 [10], Li3VO4 [11], MnO [12], Fe3O4 [13], and Si-based materials [14][15][16] have been explored as the electrode materials for Li-HECs. It is worth noting that the discharge voltage plateau of the Li4Ti5O12-based anode is~1.5 V vs. Li/Li + .…”

Section: Introductionmentioning

confidence: 99%

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Filling and unfilling carbon capsules with transition metal oxide nanoparticles for Li-ion hybrid supercapacitors: towards hundred grade energy density

Liu

Gao

et al. 2017

Sci. China Mater.

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Li-ion hybrid supercapacitors (Li-HECs) facilitate effective combination of the advantages of supercapacitors and Li-ion batteries (LIBs). However, challenges remain in designing and preparing suitable anode and cathode materials, which often require tedious and expensive procedures. Herein, we demonstrated that hollow N-doped carbon capsules (HNC) with and without a Fe3O4 nanoparticle core can respectively function as the anode and the cathode in very-high-performance Li-HECs. The Fe3O4@NC anode exhibited a high reversible specific capacity exceeding 1530 mA h g −1 at 100 mA g −1 and excellent rate capability (45% capacity retention from 0.1 to 5 A g −1 ) and cycle stability (>97% retention after 100 cycles). Moreover, high rate performance was achieved in a full-cell using the HNC cathode. By combining the respective structural advantages of the components, the hybrid device with Fe3O4@NC//HN C exhibited a remarkable energy density of 185 W h kg −1 at a power density of 39 W kg −1 . The hybrid device furnished a battery-inaccessible power density of 28 kW kg −1 with rapid charging/discharging within 9 s at an energy density of 95 W h kg −1 .

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“…The C 1s XPS spectra (Fig. S3c) could be deconvoluted into three peaks: sp 2 -sp 2 C (284.0 eV), -C-N (284.9 eV), and C=O (288.0 eV) [12,15]. The N 1s core level (Fig.…”

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Filling and unfilling carbon capsules with transition metal oxide nanoparticles for Li-ion hybrid supercapacitors: towards hundred grade energy density

Liu

Gao

et al. 2017

Sci. China Mater.

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“…The heteroatom of N and O doping can increase the electrical conductivity, ensure more active sites, and improve the surface wettability between carbon material and electrolytes. [142][143][144] Consequently, the PGOCN electrode exhibited a high specific capacitance of 348 F g −1 in acidic electrolyte and 308 F g −1 in alkaline electrolyte at 1 A g −1 current density, respectively. Remarkably, the PGOCN materials can be directly cut into thin sheets to assemble two-electrode supercapacitor, which delivered a specific capacitance of 220 F g −1 at 0.2 A g −1 and a power density of 1.2 kW kg −1 at an energy density of 3.4 W h kg −1 as well as outstanding cycling stability after 2000 cycles.…”

Section: Wwwadvsustainsyscommentioning

confidence: 97%

Progress of Nanostructured Electrode Materials for Supercapacitors

Jiang

Yadi

Nie

et al. 2017

Advanced Sustainable Systems

111

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Supercapacitors, as a type of energy storage system, bridge the power/energy gap between conventional capacitors and batteries due to attractive properties such as high power density, long cycle lifespan, and large temperature range. However, the low energy density of supercapacitors compared to lithium‐ion batteries has hindered their general application. In general, the electrochemical performance of supercapacitors is closely related to the structure of their electrode materials, electrolytes, and device design. The main materials used in electrochemical double‐layer capacitors (EDLCs) are carbon materials with various architectures. This is due to their high surface area, good electric conductivity, and intrinsic stability. In this review, recently reported carbon‐based nanostructured electrode materials with 0D, 1D, 2D, and 3D structures are systematically reviewed. The effect of nanostructuring on the properties of supercapacitors including specific capacitance, rate capability, and cycle stability is explored, the details of which may serve as a guide to electrode design for the next generation of EDLCs.

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“…Stoller et al [33] reported the gravimetric capacitance values of 135 and 99 F g −1 in aqueous and organic electrolytes, respectively. In addition to nitrogen doping [34], several strategies including structural and morphological modification have been developed to improve the gravimetric figure of merit of graphene-based materials. A significantly higher gravimetric performance of 298 F g −1 was observed for graphenebased materials in ionic liquids [35].…”

Section: Introductionmentioning

confidence: 99%

Highly densified carbon electrode materials towards practical supercapacitor devices

Zhu

2016

Sci. China Mater.

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Supercapacitors are expected to bridge the gap between conventional electrostatic capacitors and batteries, but have not found significant application in primary energy devices, partly due to some unsolved problems in the electrode materials. A wide range of novel materials such as novel carbons have been investigated to increase the energy density of the electrodes and the volumetric merits of the materials need to be specifically considered and evaluated, towards the practical application of these novel materials. In observation of the intense research activity to improve the volumetric performance of carbon electrodes, the density or mass loading is particularly important and shall be further optimized, both for commercially applied activated carbons and in novel carbon electrode materials such as graphene. In this review, we presented a brief overview of the recent progress in improving the volumetric performance of carbon-based supercapacitor electrodes, particularly highlighting the development of densified electrodes by various technical strategies including the controlled assembly of carbon building blocks, developing carbon based hybrid composites and constructing micro-supercapacitors.

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Nitrogen-doped activated carbon for a high energy hybrid supercapacitor

Abstract: The present work provides a novel one-step synthesis for nitrogen-doped activated carbon. The excellent performance of the N-doped AC allows its further application in a hybrid-type supercapacitor, which utilizes a combination of the capacitor electrode and a Li-ion battery anode.

Cited by 967 publications

References 35 publications

Filling and unfilling carbon capsules with transition metal oxide nanoparticles for Li-ion hybrid supercapacitors: towards hundred grade energy density

Filling and unfilling carbon capsules with transition metal oxide nanoparticles for Li-ion hybrid supercapacitors: towards hundred grade energy density

Progress of Nanostructured Electrode Materials for Supercapacitors

Highly densified carbon electrode materials towards practical supercapacitor devices

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