Simple pyrolysis of alginate-based hydrogel cross-linked by bivalent ions into highly porous carbons for energy storage

Highly porous carbons were prepared from sunflower seed shell (SSS) by chemical activation and used as electrode material for electrochemical double layer capacitor (EDLC). The surface area and pore structure of the porous carbons are characterized intensively using N2 adsorption technique. The results show that the pore-structure of the carbons is closely related to activation temperature. Electrochemical measurements show that the carbons have excellent capacitive behavior and high capacitance retention ratio at high drain current, which is due to that there are both abundant macroscopic pores and micropore surface in the texture of the carbons. More importantly, the capacitive performances of these carbons are much better than ordered mesoporous carbons, thus highlighting the success of preparing high performance electrode material for EDLC from SSS.

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Facile synthesis of graphitic porous carbons with three-dimensional nanonetwork for high-rate supercapacitive energy storage

Journal of Materials Science ◽

10.1007/s10853-016-9870-2 ◽

2016 ◽

Vol 51 (12) ◽

pp. 5676-5684 ◽

Cited By ~ 4

Author(s):

Zhenghui Li ◽

Haiyan Zhang ◽

Haiping Zhu ◽

Liuqing Li ◽

Haiyang Liao

Keyword(s):

Energy Storage ◽

Three Dimensional ◽

High Rate ◽

Porous Carbons ◽

Facile Synthesis

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Spray drying assisted synthesis of porous carbons from whey powders for capacitive energy storage

Energy ◽

10.1016/j.energy.2018.01.066 ◽

2018 ◽

Vol 147 ◽

pp. 308-316 ◽

Cited By ~ 10

Author(s):

Songwen Tan ◽

Xuncai Chen ◽

Shengli Zhai ◽

Amirali Ebrahimi ◽

Timothy Langrish ◽

...

Keyword(s):

Energy Storage ◽

Spray Drying ◽

Porous Carbons ◽

Capacitive Energy Storage

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Insights into the influence of the pore size and surface area of activated carbons on the energy storage of electric double layer capacitors with a new potentially universally applicable capacitor model

Physical Chemistry Chemical Physics ◽

10.1039/c8cp06443a ◽

2019 ◽

Vol 21 (6) ◽

pp. 3122-3133 ◽

Cited By ~ 22

Author(s):

Ruben Heimböckel ◽

Frank Hoffmann ◽

Michael Fröba

Keyword(s):

Energy Storage ◽

Pore Size ◽

Surface Area ◽

Double Layer ◽

Electric Double Layer ◽

Activated Carbons ◽

Porous Carbons ◽

Pore Sizes ◽

Double Layer Capacitors ◽

Electric Double Layer Capacitors

A new capacitor model that confirms the non-constant capacitive contribution of different pore sizes and provides the possibility of simulating the capacitance values of porous carbons.

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Porous Carbons Derived from Collagen‐Enriched Biomass: Tailored Design, Synthesis, and Application in Electrochemical Energy Storage and Conversion

Advanced Functional Materials ◽

10.1002/adfm.201905095 ◽

2019 ◽

Vol 29 (46) ◽

pp. 1905095 ◽

Cited By ~ 32

Author(s):

Jin Niu ◽

Rong Shao ◽

Mengyue Liu ◽

Yongxi Zan ◽

Meiling Dou ◽

...

Keyword(s):

Energy Storage ◽

Electrochemical Energy Storage ◽

Energy Storage And Conversion ◽

Porous Carbons ◽

Design Synthesis ◽

Tailored Design ◽

Electrochemical Energy

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Al/C/MnO2 sandwich nanowalls with highly porous surface for electrochemical energy storage

Journal of Power Sources ◽

10.1016/j.jpowsour.2015.09.029 ◽

2015 ◽

Vol 299 ◽

pp. 408-416 ◽

Cited By ~ 20

Author(s):

Shuijian He ◽

Ruizhong Zhang ◽

Chunmei Zhang ◽

Minmin Liu ◽

Xiaohui Gao ◽

...

Keyword(s):

Energy Storage ◽

Porous Surface ◽

Electrochemical Energy Storage ◽

Highly Porous ◽

Electrochemical Energy

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Multifunctional Hierarchically Architectured ZnO for Luminescence, Photocatalytic, Electrocatalytic, and Energy Storage Applications

Crystals ◽

10.3390/cryst10111025 ◽

2020 ◽

Vol 10 (11) ◽

pp. 1025

Author(s):

V. P. Singh ◽

Mirgender Kumar ◽

B. Purusottam Reddy ◽

Sunny ◽

R. K. Gangwar ◽

...

Keyword(s):

Energy Storage ◽

Waste Water Treatment ◽

Positron Annihilation Spectroscopy ◽

X Ray Diffraction ◽

Supercapacitor Electrode ◽

Intermediate Phases ◽

Coprecipitation Technique ◽

Energy Storage Applications ◽

White Luminescence ◽

Highly Porous

Hierarchically ZnO nanoarchitecture synthesized through coprecipitation technique. Growth process has been analyzed by varying pH from 5.5 to 13 along with post heat treatment process through the observation of surface morphology from 2D plates, triangular, hexagonal rods, needles, and finally to hierarchical. X-ray diffraction (XRD) reveals many intermediate phases along with ZnO which has been eliminated through the proper pH and temperature. The native defects have been discussed by using Raman and positron annihilation spectroscopy. Further, multifunctional properties of synthesized material have been discussed by candle-like warm white luminescence, photocatalysis, electrocatalysis and energy storage applications. Specially hierarchically nanoarchitecture found suitable for warm white lighting along with effective for waste water treatment by visible light. The highly porous property of the same material made itself appropriate for effective oxygen evaluation reaction and hydrogen evolution reaction together with reduced overpotential and Tafel slope. The application for supercapacitor electrode (~780 F/g) also has been revealed which opened new dimension for hierarchical ZnO.

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