Rational design of uniformly embedded metal oxide nanoparticles into nitrogen-doped carbon aerogel for high-performance asymmetric supercapacitors with a high operating voltage window

Sun, Guanglin; Xie, Hangyu; Ran, Jiabing; Ma, Liya; Shen, Xinyu; Hu, Jiming; Tong, Hua

doi:10.1039/c6ta07240b

Cited by 51 publications

(27 citation statements)

References 46 publications

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“…The capacitance values are maintained at 521, 478, 435, and 396 F/g at a scan rate of 20, 50, 100, 200 mV/s respectively with good rate capability. The enhanced capacitance and rate capability of the composite electrode are attributed to the synergistic effect between conductive carbon aerogel and pseudocapacitive manganese oxide [158]. Transition metal oxides offer low cost, nontoxic, high lithium storage capacity and pseudocapacitive behaviour [159].…”

Section: Carbon-based Aerogel Compositesmentioning

confidence: 99%

Aerogels: promising nanostructured materials for energy conversion and storage applications

Alwin

Shajan

2020

Mater Renew Sustain Energy

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Aerogels are 3-D nanostructures of non-fluid colloidal interconnected porous networks consisting of loosely packed bonded particles that are expanded throughout its volume by gas and exhibit ultra-low density and high specific surface area. Aerogels are normally synthesized through a sol-gel method followed by a special drying technique such as supercritical drying or ambient pressure drying. The fascinating properties of aerogels like high surface area, open porous structure greatly influence the performances of energy conversion and storage devices and encourage the development of sustainable electrochemical devices. Therefore, this review describes on the applications of inorganic, organic and composite aerogel nanostructures to dye-sensitized solar cells, fuel cells, batteries and supercapacitors accompanied by the significant steps involved in the synthesis, mechanism of network formation and various drying techniques.

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Section: Carbon-based Aerogel Compositesmentioning

confidence: 99%

Aerogels: promising nanostructured materials for energy conversion and storage applications

Alwin

Shajan

2020

Mater Renew Sustain Energy

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“…[19][20][21] To address these issues, reducingt he particles ize and/or modifying the metalo xide with different kinds of carbon are populars trategies to buffer the electrode pulverization and then enhance their capacitya nd stability. [22][23][24] Although numerouss ynthetic strategies including the traditional calcination, [25] carbonization (e.g.,i fc arbon sourcesw ere used), [26,27] hydrothermal method, [28][29][30] and sol-gel approach [31,32] have been developed, most approaches always involve too many chemicals;a lternatively,t here is ap opular trend to synthesize metal-oxide-based anodef rom biomaterials (e.g.,m icroalgae, [33] kapokf ibers, [34] spirogyra, [35] lotus pollen, [36] etc. [37] )t om inimize the chemical consumption for sustainability.D istinct from the previous literature,w eh ave introduced the Metaplexis japonica fibers (MJFs) as the bio-template to synthesize am etal-oxide-based anode.…”

Section: Introductionmentioning

confidence: 99%

Bioinspired Architectures and Heteroatom Doping To Construct Metal‐Oxide‐Based Anode for High‐Performance Lithium‐Ion Batteries

Sun

Zhou

Sun

et al. 2018

Chemistry A European J

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The pursuit of increased energy density and longer lifespan lithium-ion batteries (LIBs) is urgently needed to satisfy a dramatically increased demand in the energy market. Currently, metal-oxide-based anodes are being intensively studied due to their higher capacities over current graphite anodes. This work introduces a sustainable strategy to construct a metal-oxide-based anode with high capacity and an extremely long lifecycle, in which the features of bioinspired architectures and heteroatom doping can contribute greatly to increased performances. In detail, 1D tubelike metal oxide (e.g., MnO) coated on an N-doped carbon framework (i.e. MnO/N-C) has been designed by using the naturally abundant and renewable Metaplexis japonica fibers (MJFs) as the biotemplate and heteroatom source. Benefiting from the uniqueness of structure and compositions, as-prepared MnO/N-C demonstrates extremely high rate capacities of 951, 777, 497, and 435 mAh g at the rates of 0.5, 2, 4, and 5 Ag , respectively, with a good stability of more than 1000 cycles. It was found that the electrochemical performances are superior to most previous MnO-based anodes, in which the faster kinetics of conversion due to the advantage of the ion/electron transportation and morphological evolution has been verified. It is hoped that the concept of bioinspired architectures with heteroatom doping can be applied in wider applications for increased capability.

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“…Hence, the capacitance properties and performance of the supercapacitor device are varied that depend on the nature of the electrode materials. Generally, carbon‐based electrode materials like activated carbon,, carbon nano‐tube,, graphene and carbon aerogel used as an EDLC based supercapacitor due to their high specific surface area, good conductivity, and high electrochemical stability. To ameliorate the efforts for energy storage and practical potential applications of supercapacitor point of view, the EDLC materials are the best option due to their low cost and abundant in nature ,.…”

Section: Introductionmentioning

confidence: 99%

Orange Peel Derived Activated Carbon for Fabrication of High‐Energy and High‐Rate Supercapacitors

et al. 2017

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Owing to our inevitable energy necessity, alternate energy resources have to be implemented in our energy storage systems to enervate the energy demands. On the consideration of the above statement, activated high surface area three‐dimensional (3D) nanoporous carbon derived from the orange peel bio‐waste has been studied for symmetric flexible and bendable solid state supercapacitor (SSC) with high energy density. The nitrogen adsorption/desorption isotherms revealed that the activated nano‐porous carbon exhibits a high specific surface area and average pore volume of 2160 m2/g and 0.779 cc/g with the uniform meso and microporous network. The fabricated symmetric cell using the activated porous carbon in aqueous electrolyte exhibits a high specific capacitance of 460 F/g at 1 A/g with an excellent electrochemical stability of 98% for 10000 cycles and virtuous rate performance at higher current densities. The fabricated aqueous symmetric device exhibits a high energy density and power density of 12 Wh/kg and 32.8 kW/kg, respectively. Similarly, the symmetric device in ionic liquid electrolyte shows a high cell voltage of 3 V and high energy and power density of 43 Wh/kg and 1185 W/kg, respectively. Also, fabricated all‐solid‐state flexible supercapacitor device exhibits a high energy and power density of 11.4 Wh/kg and 6.6 kW/kg, respectively. The flexible supercapacitor device was shown to light up a red light emitting diode (LED) for more than three minutes.

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Rational design of uniformly embedded metal oxide nanoparticles into nitrogen-doped carbon aerogel for high-performance asymmetric supercapacitors with a high operating voltage window

Abstract: We report the design of a novel asymmetric supercapacitor (ASC) based on MnO/carbon aerogel (MnO/NCA) as the positive electrode and Fe2O3/carbon aerogel (Fe2O3/NCA) as the negative electrode.

Cited by 51 publications

References 46 publications

Aerogels: promising nanostructured materials for energy conversion and storage applications

Aerogels: promising nanostructured materials for energy conversion and storage applications

Bioinspired Architectures and Heteroatom Doping To Construct Metal‐Oxide‐Based Anode for High‐Performance Lithium‐Ion Batteries

Orange Peel Derived Activated Carbon for Fabrication of High‐Energy and High‐Rate Supercapacitors

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