JP6568011B2 - 燃料電池用のセパレータ材の表面処理方法 - Google Patents
燃料電池用のセパレータ材の表面処理方法 Download PDFInfo
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- JP6568011B2 JP6568011B2 JP2016089969A JP2016089969A JP6568011B2 JP 6568011 B2 JP6568011 B2 JP 6568011B2 JP 2016089969 A JP2016089969 A JP 2016089969A JP 2016089969 A JP2016089969 A JP 2016089969A JP 6568011 B2 JP6568011 B2 JP 6568011B2
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- 239000000463 material Substances 0.000 title claims description 78
- 238000000034 method Methods 0.000 title claims description 27
- 238000004381 surface treatment Methods 0.000 title claims description 25
- 239000000446 fuel Substances 0.000 title claims description 23
- 239000006229 carbon black Substances 0.000 claims description 20
- 238000000576 coating method Methods 0.000 claims description 19
- 238000010438 heat treatment Methods 0.000 claims description 18
- 239000011248 coating agent Substances 0.000 claims description 17
- 238000010248 power generation Methods 0.000 claims description 12
- 229910052751 metal Inorganic materials 0.000 claims description 7
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- 239000002245 particle Substances 0.000 claims description 5
- 239000010410 layer Substances 0.000 description 99
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 26
- 229910052799 carbon Inorganic materials 0.000 description 26
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 22
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 21
- 239000000843 powder Substances 0.000 description 7
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 4
- 238000012986 modification Methods 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 239000010936 titanium Substances 0.000 description 4
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 3
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 229910052719 titanium Inorganic materials 0.000 description 3
- 229910003087 TiOx Inorganic materials 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 239000002826 coolant Substances 0.000 description 2
- JHIVVAPYMSGYDF-UHFFFAOYSA-N cyclohexanone Chemical compound O=C1CCCCC1 JHIVVAPYMSGYDF-UHFFFAOYSA-N 0.000 description 2
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- HLLICFJUWSZHRJ-UHFFFAOYSA-N tioxidazole Chemical compound CCCOC1=CC=C2N=C(NC(=O)OC)SC2=C1 HLLICFJUWSZHRJ-UHFFFAOYSA-N 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 229910001069 Ti alloy Inorganic materials 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 125000004432 carbon atom Chemical group C* 0.000 description 1
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
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Description
この形態によれば、セパレータ材の表面に、高い導電性及び導電耐久性を有する混合層を形成することができる。また、未塗布領域の酸化物層の厚さを光学測定することにより、混合層の厚さを簡易的に算出することができるので、混合層の上にカーボンが残存し、混合層の光学測定が困難な状態であっても混合層の厚さを容易に求めることができる。
この形態によれば、燃料電池の発電領域で導電性及び導電耐久性を高めることができる。
マニホールド用の開口形成領域または開口予定領域は、燃料電池の発電領域から外れた領域であるので、この領域を未塗布領域として、光学測定可能な酸化物層を形成すれば、効率的である。
図1は、一実施形態としての燃料電池用のセパレータ材の表面処理方法の手順を示す説明図である。なお、図1の工程4を除く各工程の上段の図は平面図、下段の図は断面図である。工程4の図は断面図である。
(1)上記実施形態では、各マニホールド用の開口予定領域12,14,16を覆うように未塗布領域10cuが設定されている場合を例に説明したが、これに限定されるものではなく、塗布領域10cpと未塗布領域10cuは任意に設定できる。例えば、未塗布領域10cuを、セパレータ材10の発電対応領域SGを除く何れかの領域に、熱処理により形成される酸化チタン層の厚さを測定可能な大きさで設定してもよい。
10S…セパレータ材
10cp…塗布領域
10cu…未塗布領域
12,14,16…開口予定領域
20…カーボン層
20s…余剰カーボン層
30…混合層
40…酸化チタン層
MP…レジスタマーク
SG…発電対応領域
Claims (3)
- 燃料電池用のセパレータ材の表面処理方法であって、
(a)金属製のセパレータ材の表面を未塗布領域と塗布領域とに区分し、前記塗布領域にカーボンブラックを塗布する塗布工程と、
(b)前記塗布工程の後に、前記セパレータ材を熱処理することによって、前記塗布領域に、カーボンブラック粒子と、前記セパレータ材の含有金属の酸化物で形成された酸化物と、を含む混合層を形成するとともに、前記未塗布領域に前記セパレータ材の含有金属の酸化物で形成された酸化物層を形成する熱処理工程と、
(c)前記熱処理工程の後に、前記酸化物層の厚さを光学測定し、予め取得した前記酸化物層の厚さと前記混合層の厚さとの相関関係から、前記混合層の厚さを算出する層厚算出工程と、
を備える、セパレータ材の表面処理方法。 - 請求項1に記載のセパレータ材の表面処理方法であって、
前記塗布領域は、燃料電池の発電領域に対応する領域を覆うように設定されている、セパレータ材の表面処理方法。 - 請求項1または請求項2に記載のセパレータ材の表面処理方法であって、
前記未塗布領域は、前記セパレータ材の少なくとも一方の表面のマニホールド用の開口形成領域または開口予定領域に設定されている、セパレータ材の表面処理方法。
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JP2017199581A JP2017199581A (ja) | 2017-11-02 |
JP6568011B2 true JP6568011B2 (ja) | 2019-08-28 |
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JP6943781B2 (ja) * | 2018-01-31 | 2021-10-06 | トヨタ自動車株式会社 | 燃料電池用セパレータ材 |
JP7201535B2 (ja) * | 2019-05-27 | 2023-01-10 | トヨタ自動車株式会社 | 燃料電池用セパレータ材 |
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JP4147925B2 (ja) * | 2002-12-04 | 2008-09-10 | トヨタ自動車株式会社 | 燃料電池用セパレータ |
JP3891069B2 (ja) * | 2002-08-09 | 2007-03-07 | トヨタ自動車株式会社 | 燃料電池のセパレータ |
CA2769855C (en) * | 2009-08-03 | 2015-01-06 | Nippon Steel Corporation | Titanium material for solid polymer fuel cell separator use and method of production of same |
JP5342462B2 (ja) * | 2009-09-02 | 2013-11-13 | 株式会社神戸製鋼所 | 燃料電池セパレータの製造方法 |
JP5753830B2 (ja) * | 2012-10-04 | 2015-07-22 | 株式会社神戸製鋼所 | 燃料電池セパレータおよびその製造方法 |
JP6225716B2 (ja) * | 2014-01-23 | 2017-11-08 | 新日鐵住金株式会社 | 固体高分子形燃料電池のセパレータ用チタン材およびその製造方法 |
JP2016122642A (ja) * | 2014-05-28 | 2016-07-07 | 株式会社神戸製鋼所 | 燃料電池用セパレータ材及びその製造方法 |
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