固体酸化物形燃料電池 （SOFC） 材料の開発と評価

1 CellCathodeAnode E e ion E0iioniei i tion= ion ion+ e i E E E0 E0i = 0 tion= E / E0 H2H2OO2O2-e 99% Bi2O3 CSZ (oC) 02040608010010-210-110010110210310410111 2131415Ni vol% [S cm-1] [ppm]12. D. W. Dees, et al, J. Electrochem. Soc., 134, 2141 (1987).13. S. Majumdar, et al, J. Am. Ceram. Soc.,69, 628 (1986).Ni-YSZ 1. 2. 3. 4. 5. 1000 900 C La Sr Ca LaCrO3I. Yasuda, et al, Proc. SOFC VII, PV 2001-16, , (2001).

2 800 C LaCrO3 1/3 Cr LaCoO3 vs. LaCrO3 1 W/cm2 W/cm2 1998 2000 ( )100 kW , 576 2 , 2 47% 25%220 kW SOFC+GT National FC Center, University of CaliforniaSounthern California Edison 250 kW SOFCGT 2 (HPD cell) $10,000 kW 2010 $1,000 kW 3 MW 100W kW Global Thermoelectric ( ) 1997 2000 6 750 C, V W/cm2 SUS Sulzer Hexis ( ) 1 2 kW Delphi Automotive Systems & BMW ( ) (APU)

3 Glabal Themoelectric (900W?) 5 kW, 50 kg, 50 L, > 5000 h, > 40% Bloom Energy ( , , , 200 kW (AC) > 50% (AC, LHV) (2013/11) 60%(LHV) 23 28 /kWhES-5700 Energy Server ( 5,000) ( 200) ( 100) ) ( 2,000 h) ( 40,000 h) ( 40,000 h) 600 500 C 800 700 C 1000 850 C 15 kW7,500 22 cell 10 kW ( kW)7,000 3 kW 3,000 (MOLB) -IV IX05010015020025019951997 19992001 2003 2005 SOFC-IV SECA.

4 Solid State Energy Conversion Alliance(1999 ) 3-10 kW $400/kW (2010 ) (APU) DOE 3 5000 10 2001 8 DOE 10 4 10 & Web (10W/ ) (2007 ) 5 kW, 750oC45%HHV 44%(LHV) .2005 1 kW 45%(LHV) 30% Sc-SZ , 800oC1 kW (2006 ) 5-10 kW LSGM , 800oC1 kW , (LHV)3 kW (2006 ) 10 kW 2005 SOFC 700W 2012 2009