JP6191090B2 - 燃料極用電極材料、固体電解質−電極積層体、固体電解質−電極積層体の製造方法及び燃料電池 - Google Patents
燃料極用電極材料、固体電解質−電極積層体、固体電解質−電極積層体の製造方法及び燃料電池 Download PDFInfo
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Description
本願発明は、プロトン伝導性の固体電解質層を備える燃料電池の燃料極を構成する燃料極用電極材料であって、ペロブスカイト型の固体電解質成分とニッケル(Ni)触媒成分とを含み、上記固体電解質成分として、イットリウム添加バリウムセレイト(BCY)と、イットリウム添加ジルコン酸バリウム(BZY)の固溶体を含み、上記固体電解質成分のジルコニウム成分とセリウム成分の配合割合が、モル比で、25:55〜7:1であるとともに、燃料極用電極材料に含まれるY 2 BaNiO 5 とBZCYの存在割合が、モル比で、0.01〜0.03であり、上記ニッケル(Ni)触媒成分が、全体の40〜80体積%含ませたものである。
Ba10(Zr8Y2)O29+2NiO→Ba8Zr8O24+BaY2NiO5+BaNiO2
以下、本願発明の実施形態の詳細を説明する。
実施形態に係る固体電解質は、炭酸バリウム、酸化ジルコニウム、酸化セリウム、酸化イットリウムの粉末を所定割合で混合し、ボールミルによって粉砕混練後、一軸圧縮成形することにより、円盤状の成形体を形成した。その後、1600℃で10時間焼成することにより固相反応にて円盤状の固体電解質を形成した。その後、上記円盤状の固体電解質を粉砕機で粉砕後、ボールミルにより粉砕混練することにより、固体電解質粉末を得た。上記酸化ジルコニウムと、上記酸化セリウムの配合量を変化させることにより、下記の固体電解質を得た。
BaCe0.8Y0.2 O2.9(以下、BCY)
BaZr0.1Ce0.7Y0.2O2.9(以下、BZCY17)
BaZr0.25Ce0.55Y0.2O2.9(以下、BZCY2555)
BaZr0.4Ce0.4Y0.2O2.9(以下、BZCY44)
BaZr0.7Ce0.1Y0.2O2.9(以下、BZCY71)
BaZr0.8Y0.2O2.9(以下、BZY)
上記各固体電解質粉末を、CO2ガス100%、600℃の雰囲気中で2時間処理後、各固体電解質の分解率を計測した。分割率は、熱処理後のXRD回折結果から、RIR法(参照強度比法)を用いて、物質毎に与えられた参照強度比とピーク強度の比から元の固体電解質とBaCo3の質量比を算出し、BaCo3の生成量と固体電解質の残存量の比から分解率を求めた。
上述した各固体電解質材料に、触媒成分としてNiを70体積%含むようにNiOを添加して、各固体電解質材料を配合し、ボールミルによって粉砕混練後、一軸圧縮成形することにより、燃料極を構成する円盤状の成形体を形成した。これを1000℃で仮焼結した後、一側にBCYペーストをスクリーン印刷によって塗布し、750℃でバインダを除去した後、1400℃で一体焼結することにより、固体電解質−燃料極積層体を得た。次に、空気極を構成するランタンコバルト−セリア系材料(LSFC)を固体電解質層の表面に塗布し、1000℃で焼結させることにより、固体電解質−電極層積層体11を製作した。なお、各試料を示す符号は、上述したCO2耐性の検証実験と同一としてある。
X線回折法(XRD)によって、各燃料極の生成物について成分分析を行った。
(測定条件)
使用X線: Cu−Ka線
ラインフォーカス:45kV40mA
θ−2θスキャン:2θ=10〜80°
ステップ幅:0.03°
積算時間:1sec
図7に示すように、上記BZCY44にNiを添加して形成された燃料極を備える固体電解質−電極積層体の燃料極2及び空気極3の表面にプラチナメッシュから形成された集電体4,5を設け、図8に示す燃料電池を製作した。比較例として、上記BZYにNiを添加して形成された燃料極を備える固体電解質−電極積層体を用いた。
2 燃料極
3 空気極
4 プラチナメッシュ
5 プラチナメッシュ
10 燃料電池
11 固体電解質−電極積層体
12 筒状容器
13 流路(燃料ガス)
14 流路(燃料ガス)
15 流路(空気)
16 流路(空気)
17 リード線
18 リード線
Claims (5)
- プロトン伝導性の固体電解質層を備える燃料電池の燃料極を構成する燃料極用電極材料であって、
ペロブスカイト型の固体電解質成分とニッケル(Ni)触媒成分とを含み、
上記固体電解質成分として、イットリウム添加バリウムセレイト(BCY)と、イットリウム添加ジルコン酸バリウム(BZY)の固溶体を含み、
上記固体電解質成分のジルコニウム成分とセリウム成分の配合割合が、モル比で、25:55〜7:1であるとともに、
燃料極用電極材料に含まれるY 2 BaNiO 5 とBZCYの存在割合が、モル比で、0.01〜0.03であり、
上記ニッケル(Ni)触媒成分が、全体の40〜80体積%含まれている、燃料極用電極材料。 - 固体電解質層と燃料極とを一体焼結して形成された固体電解質−電極積層体であって、
上記燃料極が、請求項1に記載された燃料極用材料から形成されている、固体電解質−電極積層体。 - 上記固体電解質層が、上記燃料極用電極材料中の固体電解質成分と同一である、請求項2に記載の固体電解質−電極積層体。
- 請求項2又は請求項3に記載された固体電解質−電極積層体の製造方法であって、
上記燃料極用材料を成形して燃料極成形体を形成する燃料極成形工程と、
上記燃料極成形体の片側表面に、固体電解質材料を積層する固体電解質積層工程と、
上記固体電解質材料が積層された燃料極成形体を焼結させる焼結工程とを含む、固体電解質−電極積層体の製造方法。 - 請求項1に記載の燃料極用電極材料から形成された燃料極を備える、燃料電池。
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| JP2013175552A JP6191090B2 (ja) | 2013-08-27 | 2013-08-27 | 燃料極用電極材料、固体電解質−電極積層体、固体電解質−電極積層体の製造方法及び燃料電池 |
| CN201480046903.1A CN105531860A (zh) | 2013-08-27 | 2014-08-05 | 燃料电极用电极材料、固体电解质-电极层叠体、固体电解质-电极层叠体的制造方法以及燃料电池 |
| EP14840754.7A EP3041072B1 (en) | 2013-08-27 | 2014-08-05 | Electrode material for fuel electrode, solid electrolyte-electrode laminate, method for producing solid electrolyte-electrode laminate, and fuel cell |
| KR1020167004797A KR101855132B1 (ko) | 2013-08-27 | 2014-08-05 | 연료극용 전극 재료, 고체 전해질-전극 적층체, 고체 전해질-전극 적층체의 제조 방법 및 연료 전지 |
| PCT/JP2014/070582 WO2015029713A1 (ja) | 2013-08-27 | 2014-08-05 | 燃料極用電極材料、固体電解質-電極積層体、固体電解質-電極積層体の製造方法及び燃料電池 |
| US14/912,467 US9853295B2 (en) | 2013-08-27 | 2014-08-05 | Electrode material for fuel electrode, solid electrolyte-electrode laminate, method for producing solid electrolyte-electrode laminate, and fuel cell |
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| JP6398647B2 (ja) * | 2014-11-21 | 2018-10-03 | 住友電気工業株式会社 | 固体酸化物型燃料電池用アノードの製造方法および燃料電池用電解質層−電極接合体の製造方法 |
| EP3279987B1 (en) * | 2015-03-30 | 2019-11-27 | Sumitomo Electric Industries, Ltd. | Proton conductor, fuel-cell solid-electrolyte layer, cell structure, and fuel cell provided with same |
| WO2017014069A1 (ja) * | 2015-07-17 | 2017-01-26 | 住友電気工業株式会社 | 燃料電池用電解質層-アノード複合部材およびその製造方法 |
| JP6658754B2 (ja) * | 2015-07-17 | 2020-03-04 | 住友電気工業株式会社 | 固体酸化物形燃料電池、および電解質層−アノード接合体の製造方法 |
| JP6783042B2 (ja) * | 2015-08-17 | 2020-11-11 | 住友電気工業株式会社 | セル構造体の製造方法 |
| JP6778370B2 (ja) * | 2015-09-02 | 2020-11-04 | 三井化学株式会社 | 燃料極材料、固体酸化物形燃料電池用セル、水素製造用触媒及び水素製造方法 |
| JPWO2017104806A1 (ja) * | 2015-12-18 | 2018-10-11 | 住友電気工業株式会社 | プロトン伝導体、セル構造体およびこれらの製造方法、燃料電池ならびに水電解装置 |
| US20170288248A1 (en) * | 2016-04-04 | 2017-10-05 | Panasonic Corporation | Membrane electrode assembly and solid oxide fuel cell |
| US10826075B2 (en) | 2016-04-19 | 2020-11-03 | Panasonic Intellectual Property Management Co., Ltd. | Membrane electrode assembly of electrochemical device, membrane electrode assembly of fuel cell, fuel cell, membrane electrode assembly of electrochemical hydrogen pump, electrochemical hydrogen pump, membrane electrode assembly of hydrogen sensor, and hydrogen sensor |
| KR101892909B1 (ko) * | 2017-05-11 | 2018-08-29 | 한국과학기술연구원 | 프로톤 전도성 산화물 연료전지의 제조방법 |
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| US6767662B2 (en) * | 2000-10-10 | 2004-07-27 | The Regents Of The University Of California | Electrochemical device and process of making |
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| WO2009063598A1 (ja) * | 2007-11-12 | 2009-05-22 | Kyusyu University, National University Corporation | 燃料電池用電極材料及びその製造方法、並びに該燃料電池電極材料を含有してなる燃料電池用電極及び燃料電池 |
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| KR20130022828A (ko) | 2011-08-26 | 2013-03-07 | 연세대학교 산학협력단 | 고체산화물 연료전지 전해질용 수소이온 전도체 및 이를 포함하는 고체산화물 연료전지 |
| JP5939500B2 (ja) * | 2011-10-03 | 2016-06-22 | 住友電気工業株式会社 | ガス分解素子、ガス分解装置及びガス分解素子の製造方法 |
| JP5611249B2 (ja) * | 2012-01-10 | 2014-10-22 | 株式会社ノリタケカンパニーリミテド | 固体酸化物形燃料電池および該燃料電池のカソード形成用材料 |
| JP5936898B2 (ja) | 2012-03-28 | 2016-06-22 | 住友電気工業株式会社 | 固体電解質積層体、固体電解質積層体の製造方法及び燃料電池 |
| JP5936897B2 (ja) | 2012-03-28 | 2016-06-22 | 住友電気工業株式会社 | 固体電解質、固体電解質の製造方法、固体電解質積層体及び固体電解質積層体の製造方法及び燃料電池 |
| CN103224394A (zh) * | 2013-04-19 | 2013-07-31 | 天津大学 | 碳酸锂改性铈锆酸钡质子导体材料及其制备方法 |
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| KR20160037969A (ko) | 2016-04-06 |
| KR101855132B1 (ko) | 2018-05-04 |
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| EP3041072A4 (en) | 2016-10-05 |
| WO2015029713A1 (ja) | 2015-03-05 |
| US20160204446A1 (en) | 2016-07-14 |
| JP2015046251A (ja) | 2015-03-12 |
| EP3041072B1 (en) | 2019-01-02 |
| US9853295B2 (en) | 2017-12-26 |
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