Novel strategy for preparation of highly porous carbon sheets derived from polystyrene for supercapacitors
Polystyrene (PS) derived porous carbon sheets (CSs) were synthesized through the MgO template coupled with KOH activation. The influence of KOH ratio on the morphology, surface area and pore structure of the obtained carbon sheets was studied and discussed in details. Subsequently, the prepared carb...
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Veröffentlicht in: | Diamond and related materials 2019-05, Vol.95, p.5-13 |
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creator | Wen, Yanliang Wen, Xin Wenelska, Karolina Chen, Xuecheng Mijowska, Ewa |
description | Polystyrene (PS) derived porous carbon sheets (CSs) were synthesized through the MgO template coupled with KOH activation. The influence of KOH ratio on the morphology, surface area and pore structure of the obtained carbon sheets was studied and discussed in details. Subsequently, the prepared carbon materials were used as the electrodes for symmetric supercapacitors. Benefiting from KOH activation, PCSs showed outstanding electrochemical performance using 1 M H2SO4 as the electrolyte. The optimal mass ratio of CSs:KOH was 1:3 (PCS-3). This sample displayed specific capacitances of 135 and 97 F g−1 at the scan rate of 1 mV s−1 and the current density of 1 A g−1. An excellent rate performance of 82.9% retention even when current density increased up to 20 A g−1 was detected. Moreover, the energy density of 3.4 W h kg−1 with the corresponding high-power density of 250 W kg−1 in the aqueous electrolyte was achieved. In particular, PCS-3 showed an excellent capacitance retention of 92.41% even after 10,000 charge/discharge cycles, clearly demonstrating the robust long-term stability.
[Display omitted]
•Carbon sheets were fabricated by carbonization of polystyrene on MgO template.•Porous carbon sheets were synthesized through KOH activation.•Porous carbon sheets based supercapacitors showed high capacitances and excellent rate performance. |
doi_str_mv | 10.1016/j.diamond.2019.03.015 |
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[Display omitted]
•Carbon sheets were fabricated by carbonization of polystyrene on MgO template.•Porous carbon sheets were synthesized through KOH activation.•Porous carbon sheets based supercapacitors showed high capacitances and excellent rate performance.</description><identifier>ISSN: 0925-9635</identifier><identifier>EISSN: 1879-0062</identifier><identifier>DOI: 10.1016/j.diamond.2019.03.015</identifier><language>eng</language><publisher>Amsterdam: Elsevier B.V</publisher><subject>Activation ; Aqueous electrolytes ; Carbon ; Current density ; Electrochemical ; Electrochemical analysis ; Electrolytes ; Flux density ; KOH activation ; MgO template ; Morphology ; Polystyrene resins ; Porosity ; Porous carbon material ; Sheets ; Sulfuric acid ; Supercapacitors</subject><ispartof>Diamond and related materials, 2019-05, Vol.95, p.5-13</ispartof><rights>2019 Elsevier B.V.</rights><rights>Copyright Elsevier BV May 2019</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c403t-8bf3529b85907d58fb7daaa712fec7eb50e25060268b28445e47bd95c8a9776d3</citedby><cites>FETCH-LOGICAL-c403t-8bf3529b85907d58fb7daaa712fec7eb50e25060268b28445e47bd95c8a9776d3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://dx.doi.org/10.1016/j.diamond.2019.03.015$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,780,784,3550,27924,27925,45995</link.rule.ids></links><search><creatorcontrib>Wen, Yanliang</creatorcontrib><creatorcontrib>Wen, Xin</creatorcontrib><creatorcontrib>Wenelska, Karolina</creatorcontrib><creatorcontrib>Chen, Xuecheng</creatorcontrib><creatorcontrib>Mijowska, Ewa</creatorcontrib><title>Novel strategy for preparation of highly porous carbon sheets derived from polystyrene for supercapacitors</title><title>Diamond and related materials</title><description>Polystyrene (PS) derived porous carbon sheets (CSs) were synthesized through the MgO template coupled with KOH activation. The influence of KOH ratio on the morphology, surface area and pore structure of the obtained carbon sheets was studied and discussed in details. Subsequently, the prepared carbon materials were used as the electrodes for symmetric supercapacitors. Benefiting from KOH activation, PCSs showed outstanding electrochemical performance using 1 M H2SO4 as the electrolyte. The optimal mass ratio of CSs:KOH was 1:3 (PCS-3). This sample displayed specific capacitances of 135 and 97 F g−1 at the scan rate of 1 mV s−1 and the current density of 1 A g−1. An excellent rate performance of 82.9% retention even when current density increased up to 20 A g−1 was detected. Moreover, the energy density of 3.4 W h kg−1 with the corresponding high-power density of 250 W kg−1 in the aqueous electrolyte was achieved. In particular, PCS-3 showed an excellent capacitance retention of 92.41% even after 10,000 charge/discharge cycles, clearly demonstrating the robust long-term stability.
[Display omitted]
•Carbon sheets were fabricated by carbonization of polystyrene on MgO template.•Porous carbon sheets were synthesized through KOH activation.•Porous carbon sheets based supercapacitors showed high capacitances and excellent rate performance.</description><subject>Activation</subject><subject>Aqueous electrolytes</subject><subject>Carbon</subject><subject>Current density</subject><subject>Electrochemical</subject><subject>Electrochemical analysis</subject><subject>Electrolytes</subject><subject>Flux density</subject><subject>KOH activation</subject><subject>MgO template</subject><subject>Morphology</subject><subject>Polystyrene resins</subject><subject>Porosity</subject><subject>Porous carbon material</subject><subject>Sheets</subject><subject>Sulfuric acid</subject><subject>Supercapacitors</subject><issn>0925-9635</issn><issn>1879-0062</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2019</creationdate><recordtype>article</recordtype><recordid>eNqFkEFr3DAQhUVpoNskPyEg6NnuSLYs61RKaNNCSC7tWcjSOCuza7kj74L_fZVu7j0NM7z3hvcxdiegFiC6z1MdojumOdQShKmhqUGod2wnem0qgE6-ZzswUlWma9QH9jHnCUBI04odm57SGQ88r-RWfNn4mIgvhIsre0wzTyPfx5f9YeNLonTK3Dsayj3vEdfMA1I8Y-AjpWNRHLa8boQz_svJpwXJu8X5uCbKN-xqdIeMt2_zmv3-_u3X_Y_q8fnh5_3Xx8q30KxVP4yNkmbolQEdVD8OOjjntJAjeo2DApQKOpBdP8i-bRW2eghG-d4ZrbvQXLNPl9yF0p8T5tVO6URzeWmlbAqDrtdQVOqi8pRyJhztQvHoaLMC7CtWO9k3rPYVq4XGFqzF9-Xiw1LhHJFs9hFnjyES-tWGFP-T8BdmNoXc</recordid><startdate>201905</startdate><enddate>201905</enddate><creator>Wen, Yanliang</creator><creator>Wen, Xin</creator><creator>Wenelska, Karolina</creator><creator>Chen, Xuecheng</creator><creator>Mijowska, Ewa</creator><general>Elsevier B.V</general><general>Elsevier BV</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7SR</scope><scope>8BQ</scope><scope>8FD</scope><scope>JG9</scope></search><sort><creationdate>201905</creationdate><title>Novel strategy for preparation of highly porous carbon sheets derived from polystyrene for supercapacitors</title><author>Wen, Yanliang ; Wen, Xin ; Wenelska, Karolina ; Chen, Xuecheng ; Mijowska, Ewa</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c403t-8bf3529b85907d58fb7daaa712fec7eb50e25060268b28445e47bd95c8a9776d3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2019</creationdate><topic>Activation</topic><topic>Aqueous electrolytes</topic><topic>Carbon</topic><topic>Current density</topic><topic>Electrochemical</topic><topic>Electrochemical analysis</topic><topic>Electrolytes</topic><topic>Flux density</topic><topic>KOH activation</topic><topic>MgO template</topic><topic>Morphology</topic><topic>Polystyrene resins</topic><topic>Porosity</topic><topic>Porous carbon material</topic><topic>Sheets</topic><topic>Sulfuric acid</topic><topic>Supercapacitors</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Wen, Yanliang</creatorcontrib><creatorcontrib>Wen, Xin</creatorcontrib><creatorcontrib>Wenelska, Karolina</creatorcontrib><creatorcontrib>Chen, Xuecheng</creatorcontrib><creatorcontrib>Mijowska, Ewa</creatorcontrib><collection>CrossRef</collection><collection>Engineered Materials Abstracts</collection><collection>METADEX</collection><collection>Technology Research Database</collection><collection>Materials Research Database</collection><jtitle>Diamond and related materials</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Wen, Yanliang</au><au>Wen, Xin</au><au>Wenelska, Karolina</au><au>Chen, Xuecheng</au><au>Mijowska, Ewa</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Novel strategy for preparation of highly porous carbon sheets derived from polystyrene for supercapacitors</atitle><jtitle>Diamond and related materials</jtitle><date>2019-05</date><risdate>2019</risdate><volume>95</volume><spage>5</spage><epage>13</epage><pages>5-13</pages><issn>0925-9635</issn><eissn>1879-0062</eissn><abstract>Polystyrene (PS) derived porous carbon sheets (CSs) were synthesized through the MgO template coupled with KOH activation. The influence of KOH ratio on the morphology, surface area and pore structure of the obtained carbon sheets was studied and discussed in details. Subsequently, the prepared carbon materials were used as the electrodes for symmetric supercapacitors. Benefiting from KOH activation, PCSs showed outstanding electrochemical performance using 1 M H2SO4 as the electrolyte. The optimal mass ratio of CSs:KOH was 1:3 (PCS-3). This sample displayed specific capacitances of 135 and 97 F g−1 at the scan rate of 1 mV s−1 and the current density of 1 A g−1. An excellent rate performance of 82.9% retention even when current density increased up to 20 A g−1 was detected. Moreover, the energy density of 3.4 W h kg−1 with the corresponding high-power density of 250 W kg−1 in the aqueous electrolyte was achieved. In particular, PCS-3 showed an excellent capacitance retention of 92.41% even after 10,000 charge/discharge cycles, clearly demonstrating the robust long-term stability.
[Display omitted]
•Carbon sheets were fabricated by carbonization of polystyrene on MgO template.•Porous carbon sheets were synthesized through KOH activation.•Porous carbon sheets based supercapacitors showed high capacitances and excellent rate performance.</abstract><cop>Amsterdam</cop><pub>Elsevier B.V</pub><doi>10.1016/j.diamond.2019.03.015</doi><tpages>9</tpages></addata></record> |
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subjects | Activation Aqueous electrolytes Carbon Current density Electrochemical Electrochemical analysis Electrolytes Flux density KOH activation MgO template Morphology Polystyrene resins Porosity Porous carbon material Sheets Sulfuric acid Supercapacitors |
title | Novel strategy for preparation of highly porous carbon sheets derived from polystyrene for supercapacitors |
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