GIC-formation in neutral aqueous electrolytes: An undesired side-reaction during electrochemical surface oxidation of highly oriented carbon fibres
Anodic oxidation of carbon fibres in aqueous electrolytes is a technically important process for the creation of “surface oxides” which are required to improve the adhesion of carbon fibres in synthetic resin composite materials. As a result of carbon surface oxidation - or simply O 2 evolution - th...
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| Veröffentlicht in: | Synthetic metals 1990-01, Vol.34 (1), p.719-724 |
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| creator | Besenhard, J.O Jakob, J Möller, P Sauter, R.F Jannakoudakis, A.D Kurtze, A |
| description | Anodic oxidation of carbon fibres in aqueous electrolytes is a technically important process for the creation of “surface oxides” which are required to improve the adhesion of carbon fibres in synthetic resin composite materials.
As a result of carbon surface oxidation - or simply O
2 evolution - the pH of electrolyte goes acidic in the diffusion layer at the carbon anode:
C
n
+
A
− +
H
2
O = “
C
nOH
” +
H
+
A
− +
e
−
2H
2O = O
2 + 4 H
+ + 4 e
− Therefore, even in neutral aqueous electrolytes direct current oxidation of high modulus (HM) and hence fairly graphitic carbon fibres may yield higher stage hydrated acid GICs of the type (C
n)+A
−(HA)
x(H
2O)
y as a side product of surface oxidation. The intercalation damage can be minimized by agitation of electrolyte and also by alternating current oxidation procedures.
Measurements of electronic conductivity parallel to the fibre axis and voltammetric studies of intercalation into preoxidized fibres are powerful and convenient tools to monitor even minor intercalation damage of HM fibres. |
| doi_str_mv | 10.1016/0379-6779(89)90465-7 |
| format | Article |
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As a result of carbon surface oxidation - or simply O
2 evolution - the pH of electrolyte goes acidic in the diffusion layer at the carbon anode:
C
n
+
A
− +
H
2
O = “
C
nOH
” +
H
+
A
− +
e
−
2H
2O = O
2 + 4 H
+ + 4 e
− Therefore, even in neutral aqueous electrolytes direct current oxidation of high modulus (HM) and hence fairly graphitic carbon fibres may yield higher stage hydrated acid GICs of the type (C
n)+A
−(HA)
x(H
2O)
y as a side product of surface oxidation. The intercalation damage can be minimized by agitation of electrolyte and also by alternating current oxidation procedures.
Measurements of electronic conductivity parallel to the fibre axis and voltammetric studies of intercalation into preoxidized fibres are powerful and convenient tools to monitor even minor intercalation damage of HM fibres.</description><identifier>ISSN: 0379-6779</identifier><identifier>EISSN: 1879-3290</identifier><identifier>DOI: 10.1016/0379-6779(89)90465-7</identifier><identifier>CODEN: SYMEDZ</identifier><language>eng</language><publisher>Lausanne: Elsevier B.V</publisher><subject>Chemistry ; Electrochemistry ; Exact sciences and technology ; General and physical chemistry</subject><ispartof>Synthetic metals, 1990-01, Vol.34 (1), p.719-724</ispartof><rights>1989</rights><rights>1991 INIST-CNRS</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://dx.doi.org/10.1016/0379-6779(89)90465-7$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>309,310,314,780,784,789,790,3550,23930,23931,25140,27924,27925,45995</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=19423132$$DView record in Pascal Francis$$Hfree_for_read</backlink></links><search><creatorcontrib>Besenhard, J.O</creatorcontrib><creatorcontrib>Jakob, J</creatorcontrib><creatorcontrib>Möller, P</creatorcontrib><creatorcontrib>Sauter, R.F</creatorcontrib><creatorcontrib>Jannakoudakis, A.D</creatorcontrib><creatorcontrib>Kurtze, A</creatorcontrib><title>GIC-formation in neutral aqueous electrolytes: An undesired side-reaction during electrochemical surface oxidation of highly oriented carbon fibres</title><title>Synthetic metals</title><description>Anodic oxidation of carbon fibres in aqueous electrolytes is a technically important process for the creation of “surface oxides” which are required to improve the adhesion of carbon fibres in synthetic resin composite materials.
As a result of carbon surface oxidation - or simply O
2 evolution - the pH of electrolyte goes acidic in the diffusion layer at the carbon anode:
C
n
+
A
− +
H
2
O = “
C
nOH
” +
H
+
A
− +
e
−
2H
2O = O
2 + 4 H
+ + 4 e
− Therefore, even in neutral aqueous electrolytes direct current oxidation of high modulus (HM) and hence fairly graphitic carbon fibres may yield higher stage hydrated acid GICs of the type (C
n)+A
−(HA)
x(H
2O)
y as a side product of surface oxidation. The intercalation damage can be minimized by agitation of electrolyte and also by alternating current oxidation procedures.
Measurements of electronic conductivity parallel to the fibre axis and voltammetric studies of intercalation into preoxidized fibres are powerful and convenient tools to monitor even minor intercalation damage of HM fibres.</description><subject>Chemistry</subject><subject>Electrochemistry</subject><subject>Exact sciences and technology</subject><subject>General and physical chemistry</subject><issn>0379-6779</issn><issn>1879-3290</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1990</creationdate><recordtype>article</recordtype><recordid>eNo9kU1LAzEQhoMoWKv_wEMugh5Wk-xHNh4EKX5BwYueQ3Z20ka2m5rsiv0d_mFTq54GZt555-EdQk45u-SMV1cslyqrpFTntbpQrKjKTO6RCa9TOxeK7ZPJv-SQHMX4xhjjSpQT8vXwNMusDyszON9T19MexyGYjpr3Ef0YKXYIQ_DdZsB4TW97OvYtRhewpdG1mAU08LPbjsH1iz89LHHlIPnEMVgDSP2na3dHvKVLt1h2G-qDw35ITmBCkybWNQHjMTmwpot48lun5PX-7mX2mM2fE-3tPEOR10MGIEpRYs3KogEAWUMhm4oDgxIFU1IKLqCuDaimsBZyWzVNgZIp4LJAwHxKzna-axMTqQ2mBxf1OriVCRvNVSFynouku9npMMF8OAw6QuIGbFMKMOjWO82Z3r5Cb3PW25x1rfTPK7TMvwEcQIFL</recordid><startdate>19900101</startdate><enddate>19900101</enddate><creator>Besenhard, J.O</creator><creator>Jakob, J</creator><creator>Möller, P</creator><creator>Sauter, R.F</creator><creator>Jannakoudakis, A.D</creator><creator>Kurtze, A</creator><general>Elsevier B.V</general><general>Elsevier Science</general><scope>IQODW</scope></search><sort><creationdate>19900101</creationdate><title>GIC-formation in neutral aqueous electrolytes: An undesired side-reaction during electrochemical surface oxidation of highly oriented carbon fibres</title><author>Besenhard, J.O ; Jakob, J ; Möller, P ; Sauter, R.F ; Jannakoudakis, A.D ; Kurtze, A</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-e238t-cc2525e8054bccc78c47b61c0c5e20977212c88ac9b4ffc3f6bb4e709c174ece3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1990</creationdate><topic>Chemistry</topic><topic>Electrochemistry</topic><topic>Exact sciences and technology</topic><topic>General and physical chemistry</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Besenhard, J.O</creatorcontrib><creatorcontrib>Jakob, J</creatorcontrib><creatorcontrib>Möller, P</creatorcontrib><creatorcontrib>Sauter, R.F</creatorcontrib><creatorcontrib>Jannakoudakis, A.D</creatorcontrib><creatorcontrib>Kurtze, A</creatorcontrib><collection>Pascal-Francis</collection><jtitle>Synthetic metals</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Besenhard, J.O</au><au>Jakob, J</au><au>Möller, P</au><au>Sauter, R.F</au><au>Jannakoudakis, A.D</au><au>Kurtze, A</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>GIC-formation in neutral aqueous electrolytes: An undesired side-reaction during electrochemical surface oxidation of highly oriented carbon fibres</atitle><jtitle>Synthetic metals</jtitle><date>1990-01-01</date><risdate>1990</risdate><volume>34</volume><issue>1</issue><spage>719</spage><epage>724</epage><pages>719-724</pages><issn>0379-6779</issn><eissn>1879-3290</eissn><coden>SYMEDZ</coden><abstract>Anodic oxidation of carbon fibres in aqueous electrolytes is a technically important process for the creation of “surface oxides” which are required to improve the adhesion of carbon fibres in synthetic resin composite materials.
As a result of carbon surface oxidation - or simply O
2 evolution - the pH of electrolyte goes acidic in the diffusion layer at the carbon anode:
C
n
+
A
− +
H
2
O = “
C
nOH
” +
H
+
A
− +
e
−
2H
2O = O
2 + 4 H
+ + 4 e
− Therefore, even in neutral aqueous electrolytes direct current oxidation of high modulus (HM) and hence fairly graphitic carbon fibres may yield higher stage hydrated acid GICs of the type (C
n)+A
−(HA)
x(H
2O)
y as a side product of surface oxidation. The intercalation damage can be minimized by agitation of electrolyte and also by alternating current oxidation procedures.
Measurements of electronic conductivity parallel to the fibre axis and voltammetric studies of intercalation into preoxidized fibres are powerful and convenient tools to monitor even minor intercalation damage of HM fibres.</abstract><cop>Lausanne</cop><cop>Amsterdam</cop><cop>New York, NY</cop><pub>Elsevier B.V</pub><doi>10.1016/0379-6779(89)90465-7</doi><tpages>6</tpages></addata></record> |
| fulltext | fulltext |
| identifier | ISSN: 0379-6779 |
| ispartof | Synthetic metals, 1990-01, Vol.34 (1), p.719-724 |
| issn | 0379-6779 1879-3290 |
| language | eng |
| recordid | cdi_pascalfrancis_primary_19423132 |
| source | Elsevier ScienceDirect Journals Complete |
| subjects | Chemistry Electrochemistry Exact sciences and technology General and physical chemistry |
| title | GIC-formation in neutral aqueous electrolytes: An undesired side-reaction during electrochemical surface oxidation of highly oriented carbon fibres |
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