JP5391391B2 - NiO−セラミック複合粉体の製造方法 - Google Patents
NiO−セラミック複合粉体の製造方法 Download PDFInfo
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Description
NH4HCO3(400g)を含む水溶液にYSZ粉体(100g)を加えミリングにより粉砕、分散させてYSZスラリーを製造した。この分散液のミリングを続けながらNi(NO3)2(454g)を含む水溶液を、徐々に(約15ml/分)加えてYSZ粉体の表面にNi(OH)2を沈澱させた。この際、最終スラリーのpHは8になるようにした。これにより、コアがYSZで、シェルがNi(OH)2であるNi(OH)2−YSZ複合粉体を製造した。複合粉体は、水とエタノールで遠心分離、水とエタノールに分散させてフィルターで4回ろ過を繰り返し後、乾燥した。乾燥されたNi(OH)2−YSZ複合粉体を200℃の温度で2時間程度か焼して、コア−シェル構造のNiO−YSZ(NiO:YSZ=65:35(重量比))複合粉体を製造した。
実施例1と同様にして、YSZに代えてGDCを用いてコア−シェル構造のNiO−GDC(NiO:GDC=65:35(重量比))複合粉体を製造した。
実施例1で製造されたNiO−YSZ複合粉体を、50MPaの成形圧で一軸加圧成形方法により成形した後、この成形体を1300℃の空気中で2時間焼結し、NiO−YSZ複合焼結体を得た。この焼結体を水素還元雰囲気下で、600℃の温度で3時間熱処理し、気孔率25%のNi−YSZ複合燃料極を製造した。
実施例2のコア−シェル構造NiO−GDC複合粉体を使用して、実施例3と同様にしてNi−GDC複合体燃料極を製造した。図2は、その走査電子顕微鏡写真である。従来技術により製造された図3及び図4と比較してみると、気孔の大きさが相対的に一定で、粗大気孔の方向性が観察されない。
本発明による実施例3のNi−YSZ複合燃料極、実施例4の及びNi−GDC複合燃料極について機械的物性及び電気伝導度を測定した。表2のその結果を示す。
Claims (1)
- ガドリニウムがドープされたセリアからなるセラミック粉末を、炭酸アンモニウム、炭酸水素アンモニウム、水酸化アンモニウムから選ばれた少なくとも1つの塩基性塩水溶液中に分散させてセラミック分散液とする分散工程、
前記セラミック分散液中に、硝酸ニッケル、炭酸ニッケル、塩化ニッケル、硫酸ニッケルから選ばれた少なくとも1つのニッケル塩を、最終的にNiOとセラミックの重量比が(25:75)〜(70:30)となる量のニッケル塩を水溶液とするニッケル塩水溶液の調整工程、
前記セラミック分散液に前記ニッケル塩水溶液を加えてセラミック表面に不溶性ニッケル塩を析出させ不溶性ニッケル塩−セラミック複合体とする析出工程、
前記不溶性ニッケル塩−セラミック複合体を、分別する分別工程、
前記分別された不溶性ニッケル塩−セラミック複合体を、空気中、150〜250℃でか焼するか焼工程、
を順次行うことを特徴とするNiO−セラミック複合粉体の製造方法。
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KR10-2004-0054412 | 2004-07-13 | ||
KR1020040054412A KR100622711B1 (ko) | 2004-07-13 | 2004-07-13 | 상호침투형 복합구조를 가지는 고체산화물 연료전지의 연료극 및 이의 제조방법 |
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JP2012260238A Division JP5689107B2 (ja) | 2004-07-13 | 2012-11-28 | NiO−セラミック複合粉体及びNiO−セラミック複合燃料極の製造方法 |
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JP2006028009A JP2006028009A (ja) | 2006-02-02 |
JP5391391B2 true JP5391391B2 (ja) | 2014-01-15 |
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JP2005195589A Expired - Fee Related JP5391391B2 (ja) | 2004-07-13 | 2005-07-04 | NiO−セラミック複合粉体の製造方法 |
JP2012260238A Expired - Fee Related JP5689107B2 (ja) | 2004-07-13 | 2012-11-28 | NiO−セラミック複合粉体及びNiO−セラミック複合燃料極の製造方法 |
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US (1) | US7597978B2 (ja) |
JP (2) | JP5391391B2 (ja) |
KR (1) | KR100622711B1 (ja) |
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US9985295B2 (en) * | 2005-09-26 | 2018-05-29 | General Electric Company | Solid oxide fuel cell structures, and related compositions and processes |
US7670679B2 (en) * | 2006-05-30 | 2010-03-02 | General Electric Company | Core-shell ceramic particulate and method of making |
US20080248363A1 (en) * | 2007-04-06 | 2008-10-09 | Alfred University | Composite electrolyte material having high ionic conductivity and depleted electronic conductivity and method for producing same |
KR100995396B1 (ko) | 2008-02-20 | 2010-11-19 | 한국과학기술원 | 글리세롤 및 물을 직접 연료로 하는 연료전지 시스템 |
KR20100091842A (ko) * | 2009-02-11 | 2010-08-19 | 삼성전자주식회사 | 나노 다공성 나노 복합체, 그의 제조방법 및 이를 채용한 고체 산화물 연료 전지 |
JP2011190149A (ja) * | 2010-03-15 | 2011-09-29 | Sumitomo Osaka Cement Co Ltd | 複合セラミックス粉体およびその製造方法並びに固体酸化物形燃料電池 |
JP2011190148A (ja) * | 2010-03-15 | 2011-09-29 | Sumitomo Osaka Cement Co Ltd | 複合セラミックス粉体及びその製造方法並びに固体酸化物形燃料電池 |
JP5639915B2 (ja) * | 2011-02-04 | 2014-12-10 | Agcセイミケミカル株式会社 | 固体酸化物型燃料電池用燃料極材料複合粉末及びその製造方法 |
KR101219757B1 (ko) * | 2011-10-17 | 2013-01-09 | 한국과학기술연구원 | 고체 산화물 연료전지의 연료극 제조방법 |
KR20130123189A (ko) * | 2012-05-02 | 2013-11-12 | 삼성전자주식회사 | 고체산화물 연료전지용 음극 지지체 및 그 제조방법과 이를 포함한 고체산화물 연료전지 |
JPWO2013180081A1 (ja) * | 2012-05-28 | 2016-01-21 | 国立研究開発法人科学技術振興機構 | 電気化学反応器 |
CN103490047B (zh) * | 2013-09-18 | 2016-01-13 | 山东理工大学 | 一种三维孔容碳/纳米NiO复合材料的制备方法 |
CN103500828B (zh) * | 2013-09-18 | 2016-01-27 | 山东理工大学 | 一种碳/纳米NiO复合材料的制备方法 |
CN103755342B (zh) * | 2013-12-13 | 2016-04-20 | 红河学院 | 一种制备纳米氧化铝包覆8mol.%氧化钇稳定氧化锆复合陶瓷粉体的方法 |
CN105047949A (zh) * | 2015-06-09 | 2015-11-11 | 昆山艾可芬能源科技有限公司 | 一种燃料电池纳米电极材料的制备方法 |
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FR2807036B1 (fr) * | 2000-03-28 | 2002-05-10 | Rhodia Chimie Sa | Hydrogenation continue de composes nitres aromatiques utilisant un catalyseur a faible teneur en aluminium |
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JP2013079190A (ja) | 2013-05-02 |
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KR20060005570A (ko) | 2006-01-18 |
US7597978B2 (en) | 2009-10-06 |
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KR100622711B1 (ko) | 2006-09-14 |
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