AIR AIRAIR AIR
GAS GASGAS GAS LNGLNGLNG
LNG AIRAIRAIRAIR
CW CW CW CW
CW CW CW CW CW
CW CWCW
STM STMSTM STM
FUEL CELL FUEL CELL FUEL CELL FUEL CELL
SHIFT SHIFT SHIFT SHIFT REACTOR REACTORREACTOR REACTOR REFORMER
REFORMER REFORMER REFORMER
Off Off Off Off Gas Gas Gas Gas
DC-CB DC-CB DC-CB
DC-CB INVERTERINVERTERINVERTERINVERTER AC 200VAC 200VAC 200VAC 200V STEAM STEAM STEAM STEAM SEPARATOR SEPARATORSEPARATOR SEPARATOR STM+WATER
STM+WATER STM+WATER STM+WATER
WATER WATER WATER WATER
BUFFER BUFFER BUFFER BUFFER TANKTANK TANKTANK
LOAD
2e -
2e -
2e -
2H+
2H+
H2 1/2 O2
1/2 O2
H2 H2O
ACID ELECTOLYTE POROUS
ANODE
POROUS CATHODE
OXIDANT FUEL
0 0 0 0 0.20.20.2 0.2 0.4 0.40.4 0.4 0.60.60.6 0.6 0.8 0.80.8 0.8 1.0 1.01.0 1.0 1.21.21.2 1.2 1.4 1.41.4 1.4
Cell Voltage (V)Cell Voltage (V)Cell Voltage (V)Cell Voltage (V)
"No loss" voltage
"No loss" voltage
"No loss" voltage
"No loss" voltage
current density (mA/cm2) current density (mA/cm2) current density (mA/cm2) current density (mA/cm2) 0
0 0
0 200200200200 400400400400 600600600600 800800800800 1000100010001000 open circuit voltage
open circuit voltage open circuit voltage open circuit voltage
Nernst의 이론전압 Other resistances,
Ro Activation resistance, Ra
i
load V
Reverse emf by exchange current
Eo
+ E - + -
Ea +
-
Er +
-
00 00 0.2 0.20.2 0.2 0.40.40.4 0.4 0.6 0.60.6 0.6 0.8 0.80.8 0.8 1.01.01.0 1.0 1.2 1.21.2 1.2 1.41.41.4 1.4
Cell Voltage (V)Cell Voltage (V)Cell Voltage (V)Cell Voltage (V)
"No loss" voltage
"No loss" voltage
"No loss" voltage
"No loss" voltage
current density (mA/cm2) current density (mA/cm2) current density (mA/cm2) current density (mA/cm2) 0
0 0
0 200200200200 400400400400 600600600600 800800800800 1000100010001000 io= 0.01 mA/cm2
io= 100 mA/cm2
io= 1.0 mA/cm2
Load, R Anode gas stream
ya1, ma1 , Ta1
Cathode gas stream yc1, mc1, Tc1
ya2, ma2 , Ta2
yc2, mc2 , Tc2 I
Tw1, mw, q1 Tw2, mw, q2
V
원료가스 촉매층 생성가스 가열매체
feed
dz* z*
L Tw
r
STACK
PC
TC LC
SC
To Reformer
Line Heater
