Free-standing N-self-doped carbon nanofiber aerogels for high-performance all-solid-state supercapacitors

Chen, Heng; Liu, Ting; Mou, Jirong; Zhang, Wenjia; Jiang, Zengjie; Liu, Jiang; Huang, Jianlin; Liu, Meilin

doi:10.1016/j.nanoen.2019.06.032

Cited by 198 publications

(104 citation statements)

References 40 publications

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“…A Coulombic efficiency of 98.6% indicates good charge/discharge reversibility for the supercapacitor. The corresponding gravimetric and areal capacitances are 62.4 F g −1 at 0.5 A g −1 and 231 mF cm −2 at 0.5 mA cm −2 (based on the whole mass of the two carbon electrodes), respectively (Figure 6e), superior to those of many other carbon‐based all‐solid‐state SSC reported in literature (Table S6, Supporting Information) 56–58,61,63,65–67. The rate capacity of the assembled SSC (58.5%, from 0.5 to 4.0 A g −1 ) is also comparable to those of many other carbon‐derived SSC 57,67–71.…”

Section: Resultssupporting

confidence: 54%

“…The rate capacity of the assembled SSC (58.5%, from 0.5 to 4.0 A g −1 ) is also comparable to those of many other carbon‐derived SSC 57,67–71. More impressively, the SSC reveals a high energy density of 8.6 Wh kg −1 at a power density of 250 W kg −1 , and maintains 5.0 Wh kg −1 at a power density of 2000 W kg −1 (Figure 6f), which are not only better than those of many other carbon‐derived SSC,56–58,61,63 but also comparable to those of some conducting polymer or metal oxides‐based supercapacitors66,67 (Table S6, Supporting Information). As shown in Figure 6g, the SSC possesses a capacitance retention of ≈88.5% after 5000 cycles at a current density of 2 A g −1 , demonstrating its excellent cycling stability.…”

Section: Resultsmentioning

confidence: 51%

“…Significantly, areal capacitance is 736 mF cm −2 at 1 mA cm −2 and maintains 505 mF cm −2 at 20 mA cm −2 (Figure S29d, Supporting Information). The gravimetric capacitance (260 F g −1 at 0.5 A g −1 ) and areal capacitance (736 mF cm −2 at 1 mA cm −2 ) are higher than those of many other carbon materials reported recently (Table S5, Supporting Information) 56–64. It is also noted that the specific capacitance of C‐AL/CNF‐5 (260 F g −1 at 0.5 A g −1 ) is higher than that of C‐CNF (Figure S30, Supporting Information), which may result from the higher electrical conductivity and heteroatom (S and N) content of C‐AL/CNF‐5 (Table S1, Supporting Information).…”

Section: Resultsmentioning

confidence: 77%

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Wood‐Derived Lightweight and Elastic Carbon Aerogel for Pressure Sensing and Energy Storage

Chen

Zhuo

et al. 2020

Adv Funct Materials

233

142

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Lightweight and elastic carbon materials have attracted great interest in pressure sensing and energy storage for wearable devices and electronic skins. Wood is the most abundant renewable resource and offers green and sustainable raw materials for fabricating lightweight carbon materials. Herein, a facile and sustainable strategy is proposed to fabricate a wood-derived elastic carbon aerogel with tracheid-like texture from cellulose nanofibers (CNFs) and lignin. The flexible CNFs entangle and assemble into an interconnected framework, while lignin with high thermal stability and favorable stiffness prevents the framework from severe structural shrinkage during annealing. This strategy leads to an ordered tracheid-like structure and significantly reduces the thermal deformation of the CNFs network, producing a lightweight and elastic carbon aerogel. The wood-derived carbon aerogel exhibits excellent mechanical performance, including high compressibility (up to 95% strain) and fatigue resistance. It also reveals high sensitivity at a wide working pressure range of 0-16.89 kPa and can detect human biosignals accurately. Moreover, the carbon aerogel can be assembled into a flexible and free-standing all-solid-state symmetric supercapacitor that reveals satisfactory electrochemical performance and mechanical flexibility. These features make the wood-derived carbon aerogel highly attractive for pressure sensor and flexible electrode applications.The ORCID identification number(s) for the author(s) of this article can be found under https://doi.org/10.1002/adfm.201910292. important applications in wearable sensors, electronic skins, and flexible energy storage devices. Although carbon aerogels with good mechanical performances can be achieved from nanocarbon unites, their carbon precursors are nonrenewable, and the synthesis process of CNT, graphene, or their aerogels is high-cost and complicated.Considering the natural abundance, renewability, environmental friendliness, and low cost, biomass has been regarded as a renewable and sustainable carbon precursor for fabricating carbon aerogels. Up to now, several biomass-derived carbon aerogels have been successfully developed from gelatin, [16] winter melon, [17] protein, [18] bacterial cellulose, [19] and raw cotton. [20] However, those carbon aerogels show poor compressibility, elasticity, and fatigue resistance owing to the intrinsic random porous architecture and severe volume shrinkage at annealing or carbonization. Wood, as one of the most abundant biomass resources, demonstrates hierarchical tracheid structure that is composed of CNFs and amorphous matrix (lignin and hemicelluloses). [21] Owing to the compact structure (large amounts of additives and various interaction among tracheids or CNFs), natural wood is rigid and the tracheids are hard to be compressed and easily collapsed. Therefore, fabricating compressible and elastic conductive carbon aerogel from original wood tracheids is challenging. To solve this problem, Hu et al. [22] put forward a "top-down" stra...

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Section: Resultssupporting

confidence: 54%

Section: Resultsmentioning

confidence: 51%

Section: Resultsmentioning

confidence: 77%

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Wood‐Derived Lightweight and Elastic Carbon Aerogel for Pressure Sensing and Energy Storage

Chen

Zhuo

et al. 2020

Adv Funct Materials

233

142

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show abstract

“…3b and S3 †). 53,54 From the t of O 1s spectra in Fig. 3h and S4, † it can be found that there are three individual peaks centered at 531-532, 533-534, 534-536 eV, which correspond to C]O quinone type groups (O-I), C-OH phenol groups/C-O-C ether groups (O-II), and COOH carboxylic groups (O-III).…”

Section: Structural Characterization Of Nldpcsmentioning

confidence: 99%

Dual-doped hierarchical porous carbon derived from biomass for advanced supercapacitors and lithium ion batteries

et al. 2019

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“…Supercapacitor has aroused more and more attention because of the rapid charge-discharge rate, good stability and high power density (Kundu et al 2019). And its performance is governed greatly by the electrode materials (Chen et al 2019). At present, the electrode materials of supercapacitors are mainly divided into three types: carbon-based materials (Huang et al 2019), metal oxide materials(Lee and Jang 2019), and conductive polymer materials (Xu et al 2019).…”

Section: Introductionmentioning

confidence: 99%

Synthesis of two-dimensional lamellar porous carbon from fluorene for supercapacitors

Wang¹,

Huang²,

Zhang³

et al. 2020

Preprint

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Lamellar porous carbons (LPCs) were prepared from fluorene with Mg(OH)2 as template precursors coupled with KOH activation. The as-prepared LPCs feature a large flaky structure containing a large number of micropores and mesopores. This unique structure have a big lateral size/thickness aspect ratio and a large specific surface area of 1879 m2 g− 1. As an electrode material, the LPC shows a high capacitance of 231 F g− 1 at 0.05 A g− 1, excellent rate performance of 173 F g− 1 at 100 A g− 1, and good cycle stability with 95.93% capacitance retention after 10,000 cycles in 6 M KOH electrolyte.

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Free-standing N-self-doped carbon nanofiber aerogels for high-performance all-solid-state supercapacitors

Cited by 198 publications

References 40 publications

Wood‐Derived Lightweight and Elastic Carbon Aerogel for Pressure Sensing and Energy Storage

Wood‐Derived Lightweight and Elastic Carbon Aerogel for Pressure Sensing and Energy Storage

Dual-doped hierarchical porous carbon derived from biomass for advanced supercapacitors and lithium ion batteries

Synthesis of two-dimensional lamellar porous carbon from fluorene for supercapacitors

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