WWW.FUELCELLKNOWLEDGE.ORG *****CHECKELECCHEMDATA***** ALL DATA AT ONE BAR UNLESS OTHERWISE STATED GIBBS AND NERNST POTENTIAL FOR H2 OXIDATION (V) Tx pax pfx Gibbs 20% H2 & 100% O2 80% H2 & 100% O2 50% H2 & 20% O2 300.0 100000.0 100000.0 1.184766 1.166847 1.202685 1.174364 400.0 100000.0 100000.0 1.161136 1.137244 1.185029 1.147267 500.0 100000.0 100000.0 1.136207 1.106342 1.166073 1.118871 600.0 100000.0 100000.0 1.110278 1.074440 1.146117 1.089475 700.0 100000.0 100000.0 1.083562 1.041750 1.125373 1.059291 800.0 100000.0 100000.0 1.056224 1.008439 1.104009 1.028486 900.0 100000.0 100000.0 1.028398 0.974641 1.082156 0.997193 1000.0 100000.0 100000.0 1.000188 0.940457 1.059919 0.965516 1100.0 100000.0 100000.0 0.971664 0.905961 1.037368 0.933525 1200.0 100000.0 100000.0 0.942871 0.871194 1.014548 0.901264 1300.0 100000.0 100000.0 0.913844 0.836194 0.991494 0.868769 1400.0 100000.0 100000.0 0.884656 0.801033 0.968279 0.836114 GIBBS AND NERNST POTENTIAL FOR CO OXIDATION (V) Tx pax pfx Gibbs 20% CO & 100% O2 80% CO & 100% O2 50% CO & 20% O2 300.0 100000.0 100000.0 1.332871 1.314952 1.350791 1.322470 400.0 100000.0 100000.0 1.287680 1.263788 1.311573 1.273811 500.0 100000.0 100000.0 1.242244 1.212378 1.272109 1.224907 600.0 100000.0 100000.0 1.196828 1.160989 1.232666 1.176024 700.0 100000.0 100000.0 1.151402 1.109590 1.193214 1.127131 800.0 100000.0 100000.0 1.105972 1.058187 1.153756 1.078234 900.0 100000.0 100000.0 1.060650 1.006892 1.114407 1.029444 1000.0 100000.0 100000.0 1.015570 0.955839 1.075301 0.980898 1100.0 100000.0 100000.0 0.970753 0.905049 1.036457 0.932613 1200.0 100000.0 100000.0 0.926018 0.854341 0.997695 0.884410 1300.0 100000.0 100000.0 0.881052 0.803402 0.958702 0.835977 1400.0 100000.0 100000.0 0.835745 0.752122 0.919368 0.787203 GIBBS AND NERNST POTENTIAL FOR CH4 OXIDATION (V) Tx pax pfx Gibbs 25% CH4 & 100% O2 70% CH4 & 100% O2 25% CH4 & 20% O2 300.0 100000.0 100000.0 1.037458 1.041938 1.054148 1.031536 400.0 100000.0 100000.0 1.036971 1.042944 1.059224 1.029075 500.0 100000.0 100000.0 1.036805 1.044272 1.064622 1.026935 600.0 100000.0 100000.0 1.036837 1.045797 1.070218 1.024994 700.0 100000.0 100000.0 1.036948 1.047401 1.075892 1.023130 800.0 100000.0 100000.0 1.037062 1.049008 1.081568 1.021270 900.0 100000.0 100000.0 1.037144 1.050584 1.087214 1.019378 1000.0 100000.0 100000.0 1.037185 1.052117 1.092818 1.017445 1100.0 100000.0 100000.0 1.037170 1.053596 1.098367 1.015456 1200.0 100000.0 100000.0 1.037072 1.054991 1.103832 1.013384 1300.0 100000.0 100000.0 1.036859 1.056272 1.109183 1.011198 1400.0 100000.0 100000.0 1.036556 1.057462 1.114443 1.008920 PRESSURE DEP NERNST POTENTIAL FOR H2 OXIDATION (V) Tx Gibbs 1bar 3bar 5bar 300.0 1.184766 1.184766 1.191866 1.195168 400.0 1.161136 1.161136 1.170603 1.175005 500.0 1.136207 1.136207 1.148041 1.153544 600.0 1.110278 1.110278 1.124479 1.131082 700.0 1.083562 1.083562 1.100129 1.107833 800.0 1.056224 1.056224 1.075158 1.083962 900.0 1.028398 1.028398 1.049699 1.059604 1000.0 1.000188 1.000188 1.023856 1.034861 1100.0 0.971664 0.971664 0.997699 1.009804 1200.0 0.942871 0.942871 0.971272 0.984478 1300.0 0.913844 0.913844 0.944612 0.958918 1400.0 0.884656 0.884656 0.917791 0.933198 PRESSURE DEP NERNST POTENTIAL FOR CO OXIDATION (V) Tx Gibbs 1bar 3bar 5bar 300.0 1.332871 1.332871 1.339972 1.343273 400.0 1.287680 1.287680 1.297148 1.301550 500.0 1.242244 1.242244 1.254078 1.259580 600.0 1.196828 1.196828 1.211028 1.217631 700.0 1.151402 1.151402 1.167970 1.175673 800.0 1.105972 1.105972 1.124906 1.133710 900.0 1.060650 1.060650 1.081951 1.091855 1000.0 1.015570 1.015570 1.039238 1.050243 1100.0 0.970753 0.970753 0.996788 1.008893 1200.0 0.926018 0.926018 0.954419 0.967625 1300.0 0.881052 0.881052 0.911820 0.926126 1400.0 0.835745 0.835745 0.868880 0.884287 PRESSURE DEP NERNST POTENTIAL FOR CH4 OXIDATION (V) Tx Gibbs 1bar 3bar 5bar 300.0 1.037458 1.041938 1.041938 1.041938 400.0 1.036971 1.042944 1.042944 1.042944 500.0 1.036805 1.044272 1.044272 1.044272 600.0 1.036837 1.045797 1.045797 1.045797 700.0 1.036948 1.047401 1.047401 1.047401 800.0 1.037062 1.049008 1.049008 1.049008 900.0 1.037144 1.050584 1.050584 1.050584 1000.0 1.037185 1.052117 1.052117 1.052117 1100.0 1.037170 1.053596 1.053596 1.053596 1200.0 1.037072 1.054991 1.054991 1.054991 1300.0 1.036859 1.056272 1.056272 1.056272 1400.0 1.036556 1.057462 1.057462 1.057462 TEMPERATURE DEP OF MATERIALS RESISTIVITY (Ohmm m) Values from IEA, Bossel, 1992 Tx Anode Cathode Interconnect 273.0 0.000194037 0.000527109 0.001650381 373.0 0.000085696 0.000221643 0.000765574 473.0 0.000056628 0.000142369 0.000520434 573.0 0.000044880 0.000110770 0.000420142 673.0 0.000039120 0.000095310 0.000371001 773.0 0.000036021 0.000086921 0.000344913 873.0 0.000034307 0.000082174 0.000330942 973.0 0.000033395 0.000079520 0.000324049 1073.0 0.000032986 0.000078171 0.000321617 1173.0 0.000032912 0.000077685 0.000322168 1273.0 0.000033070 0.000077798 0.000324803 1373.0 0.000033397 0.000078342 0.000328950 TEMP DEP OF ELECROLYTE CONDUCTIVITY (Siemens/m) Values from IEA, Bossel, 1992 Tx Conductivity 273.0 0.00000000 373.0 0.00000001 473.0 0.00000675 573.0 0.00039100 673.0 0.00677634 773.0 0.05614233 873.0 0.28655564 973.0 1.04620048 1073.0 3.00048996 1173.0 7.19036853 1273.0 15.02027623 1373.0 28.18396563 (CHAN) BUTLER-VOLMER ACTIVATION LOSS WITH io (V) T(K)= 1073.00000000000 Tx=1073, cf ioad=2000,5300 Chan2001 iDens io=1000 io=2000 io=5300 io=8000 1.0 0.0001 0.0000 0.0000 0.0000 501.0 0.0459 0.0231 0.0087 0.0058 1001.0 0.0891 0.0458 0.0174 0.0116 1501.0 0.1283 0.0679 0.0261 0.0173 2001.0 0.1631 0.0890 0.0347 0.0231 2501.0 0.1938 0.1092 0.0432 0.0288 3001.0 0.2210 0.1282 0.0517 0.0345 3501.0 0.2452 0.1462 0.0600 0.0401 4001.0 0.2670 0.1630 0.0682 0.0458 4501.0 0.2867 0.1789 0.0763 0.0514 5001.0 0.3047 0.1938 0.0843 0.0569 5501.0 0.3211 0.2078 0.0921 0.0624 6001.0 0.3363 0.2210 0.0998 0.0678 6501.0 0.3504 0.2334 0.1073 0.0732 BUTLER-VOLMER ACTIVATION LOSS vs T io=const(V) Exchange Current Density = 5000.00000000000 iDens T=800 T=1000 T=1200 T=1400 1.0 0.0000 0.0000 0.0000 0.0000 501.0 0.0069 0.0086 0.0104 0.0121 1001.0 0.0138 0.0172 0.0207 0.0241 1501.0 0.0206 0.0258 0.0309 0.0361 2001.0 0.0274 0.0343 0.0411 0.0480 2501.0 0.0341 0.0427 0.0512 0.0597 3001.0 0.0408 0.0510 0.0612 0.0714 3501.0 0.0473 0.0592 0.0710 0.0828 4001.0 0.0538 0.0672 0.0807 0.0941 4501.0 0.0601 0.0752 0.0902 0.1052 5001.0 0.0664 0.0830 0.0995 0.1161 5501.0 0.0725 0.0906 0.1087 0.1268 6001.0 0.0784 0.0980 0.1177 0.1373 6501.0 0.0843 0.1054 0.1264 0.1475 APPROXIMATIONS TO BUTLER-VOLMER. LOSS (V) Temperature= 1073.00000000000 iDens/io Butler-Volmer Tafel Linear 1.0 0.0890 0.0000 0.0925 1.5 0.1282 0.0750 0.1387 2.0 0.1630 0.1282 0.1849 2.5 0.1937 0.1694 0.2312 3.0 0.2209 0.2032 0.2774 3.5 0.2452 0.2317 0.3236 4.0 0.2670 0.2564 0.3699 4.5 0.2867 0.2781 0.4161 5.0 0.3046 0.2976 0.4623 5.5 0.3211 0.3153 0.5086 6.0 0.3363 0.3313 0.5548 6.5 0.3504 0.3461 0.6010 APPROXIMATIONS TO BUTLER-VOLMER. ERROR (%) Temperature= 1073.00000000000 Polarisation (V) Tafel Linear 0.089 100.00 3.90 0.128 41.50 8.20 0.163 21.36 13.46 0.194 12.53 19.32 0.221 8.05 25.55 0.245 5.52 31.99 0.267 3.97 38.54 0.287 2.97 45.15 0.305 2.29 51.77 0.321 1.82 58.38 0.336 1.47 64.98 0.350 1.21 71.53 CHAN CONCENTRATION POLARISATION LOSS (V) iDens Anode Cathode 1.0 0.0000 0.0000 0.0000 0.0000 1001.0 0.0000 0.0002 0.0000 0.0000 2001.0 0.0000 0.0004 0.0000 0.0000 3001.0 0.0000 0.0006 0.0000 0.0000 4001.0 0.0000 0.0008 0.0000 0.0000 5001.0 0.0000 0.0010 0.0000 0.0000 6001.0 0.0000 0.0012 0.0000 0.0000 7001.0 0.0000 0.0014 0.0000 0.0000 8001.0 0.0000 0.0016 0.0000 0.0000 9001.0 0.0000 0.0018 0.0000 0.0000 10001.0 0.0000 0.0020 0.0000 0.0000 11001.0 0.0000 0.0023 0.0000 0.0000 12001.0 0.0000 0.0025 0.0000 0.0000 13001.0 0.0000 0.0027 0.0000 0.0000 14001.0 0.0000 0.0029 0.0000 0.0000 15001.0 0.0000 0.0031 0.0000 0.0000 16001.0 0.0000 0.0034 0.0000 0.0000 17001.0 0.0000 0.0036 0.0000 0.0000 18001.0 0.0000 0.0038 0.0000 0.0000 19001.0 0.0000 0.0041 0.0000 0.0000 20001.0 0.0000 0.0043 0.0000 0.0000 21001.0 0.0000 0.0045 0.0000 0.0000 22001.0 0.0000 0.0048 0.0000 0.0000 23001.0 0.0000 0.0050 0.0000 0.0000 24001.0 0.0000 0.0053 0.0000 0.0000 25001.0 0.0000 0.0055 0.0000 0.0000 CHAN BY PHENOMENON POLARISATION LOSS(V) Tx,tkad,tkcd,tket,tksp,pyad,pycd,pysp,tyad,tycd,tysp,XH2,XO2 1073.00000000000 7.500000065192580E-004 4.999999873689376E-005 3.999999898951501E-005 1.000000013351432E-010 0.300000011920929 0.300000011920929 0.600000023841858 6.00000000000000 6.00000000000000 3.00000000000000 0.970000028610229 0.790000021457672 iDens Net Gibbs Nern Ohmic ConcAnod ConcCath ActivAd ActivCd Flow 1.0 1.1039 0.9794 -0.1246 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 1001.0 1.0253 0.9794 -0.1246 0.0040 0.0114 0.0001 0.0174 0.0458 0.0000 2001.0 0.9514 0.9794 -0.1246 0.0080 0.0206 0.0002 0.0347 0.0890 0.0000 3001.0 0.8833 0.9794 -0.1246 0.0120 0.0285 0.0003 0.0517 0.1282 0.0000 4001.0 0.8211 0.9794 -0.1246 0.0160 0.0353 0.0004 0.0682 0.1630 0.0000 5001.0 0.7642 0.9794 -0.1246 0.0200 0.0413 0.0005 0.0843 0.1938 0.0000 6001.0 0.7119 0.9794 -0.1246 0.0240 0.0467 0.0006 0.0998 0.2210 0.0000 7001.0 0.6638 0.9794 -0.1246 0.0280 0.0516 0.0007 0.1147 0.2452 0.0000 8001.0 0.6191 0.9794 -0.1246 0.0320 0.0562 0.0008 0.1289 0.2670 0.0000 9001.0 0.5775 0.9794 -0.1246 0.0360 0.0604 0.0009 0.1425 0.2867 0.0000 10001.0 0.5386 0.9794 -0.1246 0.0400 0.0643 0.0011 0.1555 0.3046 0.0000 11001.0 0.5019 0.9794 -0.1246 0.0440 0.0679 0.0012 0.1679 0.3211 0.0000 12001.0 0.4673 0.9794 -0.1246 0.0480 0.0714 0.0013 0.1797 0.3363 0.0000 13001.0 0.4346 0.9794 -0.1246 0.0520 0.0747 0.0014 0.1910 0.3504 0.0000 14001.0 0.4034 0.9794 -0.1246 0.0560 0.0778 0.0015 0.2018 0.3635 0.0000 15001.0 0.3738 0.9794 -0.1246 0.0600 0.0808 0.0016 0.2121 0.3758 0.0000 16001.0 0.3454 0.9794 -0.1246 0.0640 0.0836 0.0017 0.2219 0.3874 0.0000 17001.0 0.3182 0.9794 -0.1246 0.0680 0.0863 0.0018 0.2314 0.3983 0.0000 18001.0 0.2921 0.9794 -0.1246 0.0720 0.0890 0.0019 0.2404 0.4086 0.0000 19001.0 0.2670 0.9794 -0.1246 0.0760 0.0915 0.0021 0.2491 0.4184 0.0000 20001.0 0.2429 0.9794 -0.1246 0.0800 0.0939 0.0022 0.2574 0.4276 0.0000 21001.0 0.2195 0.9794 -0.1246 0.0840 0.0963 0.0023 0.2654 0.4365 0.0000 22001.0 0.1969 0.9794 -0.1246 0.0880 0.0986 0.0024 0.2731 0.4450 0.0000 23001.0 0.1750 0.9794 -0.1246 0.0920 0.1009 0.0025 0.2806 0.4530 0.0000 24001.0 0.1538 0.9794 -0.1246 0.0960 0.1030 0.0026 0.2877 0.4608 0.0000 25001.0 0.1332 0.9794 -0.1246 0.1000 0.1051 0.0028 0.2947 0.4683 0.0000 26001.0 0.1131 0.9794 -0.1246 0.1040 0.1072 0.0029 0.3014 0.4754 0.0000 27001.0 0.0936 0.9794 -0.1246 0.1080 0.1092 0.0030 0.3078 0.4823 0.0000 28001.0 0.0746 0.9794 -0.1246 0.1120 0.1112 0.0031 0.3141 0.4890 0.0000 29001.0 0.0560 0.9794 -0.1246 0.1160 0.1131 0.0032 0.3202 0.4954 0.0000 COPYRIGHT BEN TODD 2003