Structure-controlled graphene electrocatalysts for high-performance HO production
Metal-free carbon materials have emerged as cost-effective and high-performance catalysts for the production of hydrogen peroxide (H 2 O 2 ) through the two-electron oxygen reduction reaction (ORR). Here, we show that 3D crumpled graphene with controlled oxygen and defect configurations significantl...
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| Veröffentlicht in: | Energy & environmental science 2022-07, Vol.15 (7), p.2858-2866 |
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| creator | Lee, Kyungbin Lim, Jeonghoon Lee, Michael J Ryu, Kun Lee, Hoyoung Kim, Jin Young Ju, Hyunchul Cho, Hyun-Seok Kim, Byung-Hyun Hatzell, Marta C Kang, Joonhee Lee, Seung Woo |
| description | Metal-free carbon materials have emerged as cost-effective and high-performance catalysts for the production of hydrogen peroxide (H
2
O
2
) through the two-electron oxygen reduction reaction (ORR). Here, we show that 3D crumpled graphene with controlled oxygen and defect configurations significantly improves the electrocatalytic production of H
2
O
2
. The crumpled graphene electrocatalyst with optimal defect structures and oxygen functional groups exhibits outstanding H
2
O
2
selectivity of 92100% in a wide potential window of 0.050.7 V
vs.
reversible hydrogen electrode (RHE) and a high mass activity of 158 A g
1
at 0.65 V
vs.
RHE in alkaline media. In addition, the crumpled graphene catalyst showed an excellent H
2
O
2
production rate of 473.9 mmol gcat
1
h
1
and stability over 46 h at 0.4 V
vs.
RHE. Moreover, density functional theory calculations revealed the role of the functional groups and defect sites in the two-electron ORR pathway through the scaling relation between OOH and O adsorption strengths. These results establish a structure-mechanism-performance relationship of functionalized carbon catalysts for the effective production of H
2
O
2
.
A structure-mechanism-performance relationship of metal-free carbon catalysts for outstanding H
2
O
2
production activity and selectivity in alkaline media. |
| doi_str_mv | 10.1039/d2ee00548d |
| format | Article |
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2
O
2
) through the two-electron oxygen reduction reaction (ORR). Here, we show that 3D crumpled graphene with controlled oxygen and defect configurations significantly improves the electrocatalytic production of H
2
O
2
. The crumpled graphene electrocatalyst with optimal defect structures and oxygen functional groups exhibits outstanding H
2
O
2
selectivity of 92100% in a wide potential window of 0.050.7 V
vs.
reversible hydrogen electrode (RHE) and a high mass activity of 158 A g
1
at 0.65 V
vs.
RHE in alkaline media. In addition, the crumpled graphene catalyst showed an excellent H
2
O
2
production rate of 473.9 mmol gcat
1
h
1
and stability over 46 h at 0.4 V
vs.
RHE. Moreover, density functional theory calculations revealed the role of the functional groups and defect sites in the two-electron ORR pathway through the scaling relation between OOH and O adsorption strengths. These results establish a structure-mechanism-performance relationship of functionalized carbon catalysts for the effective production of H
2
O
2
.
A structure-mechanism-performance relationship of metal-free carbon catalysts for outstanding H
2
O
2
production activity and selectivity in alkaline media.</description><identifier>ISSN: 1754-5692</identifier><identifier>EISSN: 1754-5706</identifier><identifier>DOI: 10.1039/d2ee00548d</identifier><ispartof>Energy & environmental science, 2022-07, Vol.15 (7), p.2858-2866</ispartof><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,776,780,27901,27902</link.rule.ids></links><search><creatorcontrib>Lee, Kyungbin</creatorcontrib><creatorcontrib>Lim, Jeonghoon</creatorcontrib><creatorcontrib>Lee, Michael J</creatorcontrib><creatorcontrib>Ryu, Kun</creatorcontrib><creatorcontrib>Lee, Hoyoung</creatorcontrib><creatorcontrib>Kim, Jin Young</creatorcontrib><creatorcontrib>Ju, Hyunchul</creatorcontrib><creatorcontrib>Cho, Hyun-Seok</creatorcontrib><creatorcontrib>Kim, Byung-Hyun</creatorcontrib><creatorcontrib>Hatzell, Marta C</creatorcontrib><creatorcontrib>Kang, Joonhee</creatorcontrib><creatorcontrib>Lee, Seung Woo</creatorcontrib><title>Structure-controlled graphene electrocatalysts for high-performance HO production</title><title>Energy & environmental science</title><description>Metal-free carbon materials have emerged as cost-effective and high-performance catalysts for the production of hydrogen peroxide (H
2
O
2
) through the two-electron oxygen reduction reaction (ORR). Here, we show that 3D crumpled graphene with controlled oxygen and defect configurations significantly improves the electrocatalytic production of H
2
O
2
. The crumpled graphene electrocatalyst with optimal defect structures and oxygen functional groups exhibits outstanding H
2
O
2
selectivity of 92100% in a wide potential window of 0.050.7 V
vs.
reversible hydrogen electrode (RHE) and a high mass activity of 158 A g
1
at 0.65 V
vs.
RHE in alkaline media. In addition, the crumpled graphene catalyst showed an excellent H
2
O
2
production rate of 473.9 mmol gcat
1
h
1
and stability over 46 h at 0.4 V
vs.
RHE. Moreover, density functional theory calculations revealed the role of the functional groups and defect sites in the two-electron ORR pathway through the scaling relation between OOH and O adsorption strengths. These results establish a structure-mechanism-performance relationship of functionalized carbon catalysts for the effective production of H
2
O
2
.
A structure-mechanism-performance relationship of metal-free carbon catalysts for outstanding H
2
O
2
production activity and selectivity in alkaline media.</description><issn>1754-5692</issn><issn>1754-5706</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2022</creationdate><recordtype>article</recordtype><sourceid/><recordid>eNqFjjsLwjAUhYMoWB-Lu5A_EE3fdhalm4juJaS3D0mTcpMO_fd2UBydzsf54HAI2fn84PMwO5YBAOdxdCpnxPPTOGJxypP5l5MsWJKVtS_Ok4CnmUfuD4eDdAMCk0Y7NEpBSWsUfQMaKCiQUymFE2q0ztLKIG3aumE94MSd0BJofqM9mnLaaY3ekEUllIXtJ9dkf708zzlDK4se207gWPx-hv_8G_yQQoY</recordid><startdate>20220713</startdate><enddate>20220713</enddate><creator>Lee, Kyungbin</creator><creator>Lim, Jeonghoon</creator><creator>Lee, Michael J</creator><creator>Ryu, Kun</creator><creator>Lee, Hoyoung</creator><creator>Kim, Jin Young</creator><creator>Ju, Hyunchul</creator><creator>Cho, Hyun-Seok</creator><creator>Kim, Byung-Hyun</creator><creator>Hatzell, Marta C</creator><creator>Kang, Joonhee</creator><creator>Lee, Seung Woo</creator><scope/></search><sort><creationdate>20220713</creationdate><title>Structure-controlled graphene electrocatalysts for high-performance HO production</title><author>Lee, Kyungbin ; Lim, Jeonghoon ; Lee, Michael J ; Ryu, Kun ; Lee, Hoyoung ; Kim, Jin Young ; Ju, Hyunchul ; Cho, Hyun-Seok ; Kim, Byung-Hyun ; Hatzell, Marta C ; Kang, Joonhee ; Lee, Seung Woo</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-rsc_primary_d2ee00548d3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><creationdate>2022</creationdate><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Lee, Kyungbin</creatorcontrib><creatorcontrib>Lim, Jeonghoon</creatorcontrib><creatorcontrib>Lee, Michael J</creatorcontrib><creatorcontrib>Ryu, Kun</creatorcontrib><creatorcontrib>Lee, Hoyoung</creatorcontrib><creatorcontrib>Kim, Jin Young</creatorcontrib><creatorcontrib>Ju, Hyunchul</creatorcontrib><creatorcontrib>Cho, Hyun-Seok</creatorcontrib><creatorcontrib>Kim, Byung-Hyun</creatorcontrib><creatorcontrib>Hatzell, Marta C</creatorcontrib><creatorcontrib>Kang, Joonhee</creatorcontrib><creatorcontrib>Lee, Seung Woo</creatorcontrib><jtitle>Energy & environmental science</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Lee, Kyungbin</au><au>Lim, Jeonghoon</au><au>Lee, Michael J</au><au>Ryu, Kun</au><au>Lee, Hoyoung</au><au>Kim, Jin Young</au><au>Ju, Hyunchul</au><au>Cho, Hyun-Seok</au><au>Kim, Byung-Hyun</au><au>Hatzell, Marta C</au><au>Kang, Joonhee</au><au>Lee, Seung Woo</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Structure-controlled graphene electrocatalysts for high-performance HO production</atitle><jtitle>Energy & environmental science</jtitle><date>2022-07-13</date><risdate>2022</risdate><volume>15</volume><issue>7</issue><spage>2858</spage><epage>2866</epage><pages>2858-2866</pages><issn>1754-5692</issn><eissn>1754-5706</eissn><abstract>Metal-free carbon materials have emerged as cost-effective and high-performance catalysts for the production of hydrogen peroxide (H
2
O
2
) through the two-electron oxygen reduction reaction (ORR). Here, we show that 3D crumpled graphene with controlled oxygen and defect configurations significantly improves the electrocatalytic production of H
2
O
2
. The crumpled graphene electrocatalyst with optimal defect structures and oxygen functional groups exhibits outstanding H
2
O
2
selectivity of 92100% in a wide potential window of 0.050.7 V
vs.
reversible hydrogen electrode (RHE) and a high mass activity of 158 A g
1
at 0.65 V
vs.
RHE in alkaline media. In addition, the crumpled graphene catalyst showed an excellent H
2
O
2
production rate of 473.9 mmol gcat
1
h
1
and stability over 46 h at 0.4 V
vs.
RHE. Moreover, density functional theory calculations revealed the role of the functional groups and defect sites in the two-electron ORR pathway through the scaling relation between OOH and O adsorption strengths. These results establish a structure-mechanism-performance relationship of functionalized carbon catalysts for the effective production of H
2
O
2
.
A structure-mechanism-performance relationship of metal-free carbon catalysts for outstanding H
2
O
2
production activity and selectivity in alkaline media.</abstract><doi>10.1039/d2ee00548d</doi><tpages>9</tpages></addata></record> |
| fulltext | fulltext |
| identifier | ISSN: 1754-5692 |
| ispartof | Energy & environmental science, 2022-07, Vol.15 (7), p.2858-2866 |
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| source | Royal Society Of Chemistry Journals 2008- |
| title | Structure-controlled graphene electrocatalysts for high-performance HO production |
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