Asymmetric capacitors using lignin-based hierarchical porous carbons
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http://hdl.handle.net/10045/57311
Title: | Asymmetric capacitors using lignin-based hierarchical porous carbons |
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Authors: | Salinas-Torres, David | Ruiz-Rosas, Ramiro | Valero-Romero, María José | Rodríguez-Mirasol, José | Cordero, Tomás | Morallon, Emilia | Cazorla-Amorós, Diego |
Research Group/s: | Materiales Carbonosos y Medio Ambiente | Electrocatálisis y Electroquímica de Polímeros |
Center, Department or Service: | Universidad de Alicante. Departamento de Química Inorgánica | Universidad de Alicante. Departamento de Química Física | Universidad de Alicante. Instituto Universitario de Materiales |
Keywords: | Supercapacitors | Hierarchical porous carbon | Lignin | Green chemistry |
Knowledge Area: | Química Inorgánica | Química Física |
Issue Date: | 3-Apr-2016 |
Publisher: | Elsevier |
Citation: | Journal of Power Sources. 2016, 326: 641-651. doi:10.1016/j.jpowsour.2016.03.096 |
Abstract: | Hierarchical porous carbons (HPC) were fabricated from lignin by hard template method using Beta and Y zeolites as templates. Textural properties were dictated by the hard template, obtaining a bi-modal pore size distribution with similar micropore sizes but different mesopore sizes. These HPCs provide a well-connected and developed porosity that show capacitance values near to 140 F g−1 in 1 M H2SO4 at 1 A g−1 and a capacitance retention of ca. 50% and 40% when the specific current is increased from 1 to 64 A g−1 for the Y and the Beta-based carbons, respectively. A symmetric capacitor working at 1.2 V with energy densities of 4.2 Wh kg−1 at 1.3 kW kg−1 has been obtained using the Beta-based HPC. Asymmetric in mass design allowed to operate the capacitor safely at 1.4 V, yielding an energy density of 6.3 Wh kg−1 at 1.3 kW kg−1, an increase of 50% with respect to the symmetric configuration, while keeping a maximum power near to 50 kW kg−1. This capacitor has an energy density comparable to that of a symmetric supercapacitor built using a commercial activated carbon of much higher porosity development, outperforming it in terms of energy, coulombic efficiencies and maximum power. |
URI: | http://hdl.handle.net/10045/57311 |
ISSN: | 0378-7753 (Print) | 1873-2755 (Online) |
DOI: | 10.1016/j.jpowsour.2016.03.096 |
Language: | eng |
Type: | info:eu-repo/semantics/article |
Rights: | © 2016 Elsevier B.V. |
Peer Review: | si |
Publisher version: | http://dx.doi.org/10.1016/j.jpowsour.2016.03.096 |
Appears in Collections: | INV - MCMA - Artículos de Revistas INV - GEPE - Artículos de Revistas |
Files in This Item:
File | Description | Size | Format | |
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2016_Salinas_etal_JPS_InPress.pdf | Article in Press (acceso restringido) | 2,01 MB | Adobe PDF | Open Request a copy |
2016_Salinas_etal_JPS_revised.pdf | Versión revisada (acceso abierto) | 2,3 MB | Adobe PDF | Open Preview |
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