Pore regulation of wood-derived hierarchical porous carbon for improving electrochemical performance

Wu, Meng; Xu, Sheng; Li, Xiang; Zhang, Tingkai; Lv, Zongze; Li, Zhiguo; Li, Xiaoli

doi:10.1016/j.est.2021.102663

Cited by 21 publications

(10 citation statements)

References 55 publications

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“…All precursors exhibit a predominance of sub‐mesopores in the low distribution area at 3–3.5 nm. This low distribution provides a smooth ion transport space, initiating fast charge current movement 50 . This feature is needed to ensure the C materials' accessibility and outstanding cycling performance 51 …”

Section: Resultsmentioning

confidence: 99%

High well‐matched energy gravimetric–volumetric symmetric super‐capacitor derived from hollow paper stack‐like biomass‐based functional carbon

Julnaidi

Amri

Saputra

et al. 2023

J of Chemical Tech & Biotech

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BACKGROUND: Two-and three-dimensional porous activated carbon (C)-based symmetrical supercapacitors show great potential for extraordinary gravimetric performance as sustainable energy storage. However, the applications of portable and microdimensional supercapacitors are limited by their low volumetric performance stemming from reduced density resulting from increased porosity and high fabrication costs. This study aimed to demonstrate the high gravimetric-volumetric performance of symmetrical supercapacitors from biomass-based porous carbon-sources materials through an environmentally benign development method. Unique porous C sourced from TENERA-type palm oil stick waste was prepared using potassium hydroxide (KOH) as an activating agent. The electrode set resembled a solid plate with an encapsulation density of ≈1.40 g cm −3 .RESULT: The study used superior gravimetric-volumetric electrode materials, including an adjusted specific surface area of 934 m 2 g −1 , single-doped optimization, and a hollow paper-stack-like morphological structure with a high C content of 91%. The results showed that the best electrode in the 1 mol L −1 H 2 SO 4 electrolytes exhibited a high gravimetric capacitance of 233 F g −1 and an extraordinary volumetric capacitance of 326 F cm −3 at 1 A g −1 . Furthermore, their coulombic efficiency was ≈99.1% at 10 A g −1 . The symmetrical electrode device performed a high gravimetric-volumetric energy density of 19.03 Wh kg −1 and 26.6 Wh L −1 at a maximum output power density of 1.7 kW kg −1 and 1.9 kW L −1 , respectively. CONCLUSION: These results indicate that the applied method development and the C-biomass-based electrode material design could achieve a high, well-matched gravimetric-volumetric performance balance in symmetric supercapacitor devices.

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Section: Resultsmentioning

confidence: 99%

High well‐matched energy gravimetric–volumetric symmetric super‐capacitor derived from hollow paper stack‐like biomass‐based functional carbon

Julnaidi

Amri

Saputra

et al. 2023

J of Chemical Tech & Biotech

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“…In contrast, the CV curve of GLAC5 showed an insignificant increase in current, leading to a relatively ideal rectangular shape. This is contributed by the dominant mesopores of all ions present throughout the electrolyte/electrode interface [57] . Based on the standard equation of a two‐electrode system, the specific capacitances of GLAC5, GLAC7, and GLAC9 were 75, 146, and 89 F g −1 , respectively.…”

Section: Resultsmentioning

confidence: 99%

“…This is contributed by the dominant mesopores of all ions present throughout the electrolyte/electrode interface. [57] Based on the standard equation of a two-electrode system, the specific capacitances of GLAC5, GLAC7, and GLAC9 were 75, 146, and 89 F g À 1 , respectively. The conversion of galangal leaves' precursors to porous carbon through KOH activation successfully improved the capacitive properties of their electrodes at different solution concentrations.…”

Section: Chemistryselectmentioning

confidence: 99%

Suitable Micro/Mesoporous Carbon Derived from Galangal Leaves (Alpinia galanga L.) Biomass for Enhancing Symmetric Electrochemical Double‐layer Capacitor Performances

et al. 2022

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Recently, micro/mesoporous biomass‐based functional carbon as an excellent electrode material and energy storage device has attracted massive attention due to the availability of abundant raw materials, adaptability to pore structure, good chemical‐physical behaviors, high conductivity, enhanced energy density, and long life cyclic stability. This study performs micro/meso carbon from the novel galangal leaves biomass through KOH and CO2 activation as electrodes material for symmetric supercapacitors. The activated carbon obtained showed a clear hierarchical pore structure with an excellent micro:meso ratio of 56.72 %:43.28 % which caused their high electrochemical properties. The carbon was further assembled into electrodes through a binder‐free solid disc designed to assess the electrochemical performance as a supercapacitor. The results indicated that the galangal leaves‐based adapted micro/mesoporous carbon obtained a high specific capacitance of 161 F g−1 at 1 A g−1. Additionally, the symmetric supercapacitor had a specific capacitance retention rate of 78 % at 10 mV s−1 and low resistance in the aqueous electrolyte of 1 M H2SO4. The maximum energy density was 19.53 Wh kg−1 at an optimum power density of 132.32 W kg−1. Therefore, the appropriate micro/mesopores carbon ratio based on the novel galangal leaves biomass can be considered as a good electrode material for high‐performance supercapacitor.

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“…For example, it is found that micropores (<2 nm) have a strong influence on the increase of performance, showing satisfactory specific capacitance when the pore size is similar to the adsorbed electrolyte ions . Wu et al adjusted the structure of carbon electrode materials by doping mesoporous prepolymers, which simply and effectively expanded the pore size range and so accelerated the transport of aqueous electrolyte ions, and the specific capacitance was up to 323 F g –1 . New structures such as N-doped carbon materials by adjusting the content of zinc chloride in the catalyst achieved the maximum power density to 175 mW cm –2 .…”

Section: Introductionmentioning

confidence: 99%

“…19 Wu et al adjusted the structure of carbon electrode materials by doping mesoporous prepolymers, which simply and effectively expanded the pore size range and so accelerated the transport of aqueous electrolyte ions, and the specific capacitance was up to 323 F g −1 . 20 New structures such as N-doped carbon materials by adjusting the content of zinc chloride in the catalyst achieved the maximum power density to 175 mW cm −2 . 21 Three-dimensional (3D) carbon materials, which have unique pore networks (micropores, mesopores, and macropores), not only increase their active sites, surface area, and mechanical strength but also accelerate the ion transport rate 22 and so greatly improve the electrochemical performance of carbon materials.…”

Section: Introductionmentioning

confidence: 99%

Ag/MnO₂/GO/PPy Nanocomposites with Tunable Micro-mesoporous Structures for High-Performance Supercapacitor Electrodes

Xing

Cui

Guo

et al. 2022

ACS Appl. Nano Mater.

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In this paper, a three-dimensional (3D) network Ag/MnO 2 /GO/PPy nanocomposite with adjustable micro-mesoporosity was synthesized by effectively controlling the amount of added pyrrole (Py). The Ag/MnO 2 /GO/PPy-5 nanocomposite exhibits excellent specific capacitance (C = 474.3 F g −1 , 5 mV s −1 ) and high cycle stability (up to 105.3% efficiency after 10,000 charge/discharge cycles). The appropriate micro-mesoporous structure of the 3D graphene-based nanocomposite provides a low-resistance path and a shorter diffusion path for ions, remarkably improving the electrochemical performance of Ag/ MnO 2 /GO/PPy-5 by combining the advantages of these materials. Moreover, the 3D porous structure has strong stability, and evenly dispersed MnO 2 and symbiose Ag nanoparticles can afford additional active sites and high conductivity for the nanocomposites.

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Pore regulation of wood-derived hierarchical porous carbon for improving electrochemical performance

Cited by 21 publications

References 55 publications

High well‐matched energy gravimetric–volumetric symmetric super‐capacitor derived from hollow paper stack‐like biomass‐based functional carbon

High well‐matched energy gravimetric–volumetric symmetric super‐capacitor derived from hollow paper stack‐like biomass‐based functional carbon

Suitable Micro/Mesoporous Carbon Derived from Galangal Leaves (Alpinia galanga L.) Biomass for Enhancing Symmetric Electrochemical Double‐layer Capacitor Performances

Ag/MnO₂/GO/PPy Nanocomposites with Tunable Micro-mesoporous Structures for High-Performance Supercapacitor Electrodes

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Pore regulation of wood-derived hierarchical porous carbon for improving electrochemical performance

Cited by 21 publications

References 55 publications

High well‐matched energy gravimetric–volumetric symmetric super‐capacitor derived from hollow paper stack‐like biomass‐based functional carbon

High well‐matched energy gravimetric–volumetric symmetric super‐capacitor derived from hollow paper stack‐like biomass‐based functional carbon

Suitable Micro/Mesoporous Carbon Derived from Galangal Leaves (Alpinia galanga L.) Biomass for Enhancing Symmetric Electrochemical Double‐layer Capacitor Performances

Ag/MnO2/GO/PPy Nanocomposites with Tunable Micro-mesoporous Structures for High-Performance Supercapacitor Electrodes

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Product

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Ag/MnO₂/GO/PPy Nanocomposites with Tunable Micro-mesoporous Structures for High-Performance Supercapacitor Electrodes