신소재공학과

Seminar

Date 20171113 

■ Title : Recent Development and Understanding of High-Temperature PEM Fuel Cells at DTU Energy
■ Speaker : Prof. Jens Oluf Jensen (Technical University of Denmark)       

■ Invitation from : Prof. EunAe Cho (T. 3317)      
■ Date and time : 13th of November, (Mon) 16:00      
■ Venue : Applied Engineering Dpt. Bd W1 Room 2425       

 

■ Abstract : 

High-temperature PEM fuel cells (HT-PEMFC) have been studies and developed at Technical University of Denmark for two decades. Today the technology has reached a high level of maturity and commercialization is gaining momentum through industries like Danish Power systems, Serenergy, Siqens and Elcore. The immediate aim is now to reduce cost and extend durability.

 

Recent durability studies will be presented and the learning points discussed. The effect of temperature, current load and gas flow rates was studied systematically in a matrix study.[1] All three parameters have significant effects on voltage decay at constant current. It will moreover be shown that that even though HT-PEMFCs run perfectly without humidification, humidity control is crucial for accelerated stress tests of the catalysts by potential cycling, if the tests shall be meaningful.[2] Finally, work on oxygen reduction catalysts without the use of platinum group metals will be presented. Highly organized nanostructured catalysts can be synthesized from simple precursors in a one-pot autoclave process leading to oxygen reduction catalysts with high activity in acidic as well as alkaline environment.[3] The understanding, or lack of understanding, of the active site of what is believed to be iron-nitrogen-carbon based catalysts will be discussed.

A book on HT-PEMFC was published recently.[4]

        

References:

1. [1] M. T. D. Jakobsen, L. N. Cleemann, H. Becker, T. Steenberg, H. A. Hjuler, L. Seerup, Q. Li, J. O. Jensen. Parametric Accelerated Stress Test Study in Relation to Long-term Durability of PBI-based HT-PEM Fuel Cells. Submitted to J. Electrochem. Soc.

[2] M. T. D. Jakobsen, L. N. Cleemann, L. Zhong, H. Becker, T. Steenberg, H. A. Hjuler, L. Seerup, Q. Li and J. O. Jensen. Catalyst Degradation under Accelerated Stress Test for PBI based HT-PEM Fuel Cells – Effect of Humidification. Published online in Electrocatalysis. DOI: 10.1007/s12678-017-0427-1

[3] Y. Hu, J. O.  Jensen, W. Zhang, L. N. Cleemann, W. Xing, N. J. Bjerrum and Q. Li,. Hollow Spheres of Iron Carbide Nanoparticles Encased in Graphitic Layers as Oxygen Reduction Catalysts. Angew. Chem. Int. Ed. 53 (14) 3675 –3679(2014) DOI: 10.1002/anie.201400358

[4] Q. Li, D. Aili, H. A. Hjuler and J. O. Jensen (eds). High Temperature Polymer Electrolyte Membrane Fuel Cells- Approaches, Status and Perspectives. Springer-Verlag 2016.

No. Subject Author Date Views
Notice 2/8 (Thu) Prof. Pei-Chen Su (Nanyang Technological University) ADMINI 2018.02.05 17
Notice 2/13 (Tue) Prof. Sungkyu Kim (Northwestern Univ) ADMINI 2018.01.31 61
Notice 1/9 (Tue) Dr. Choon Won Byeon, ETRI ADMINI 2018.01.09 149
Notice 12/23 (Sat) Prof. Liangbing (Bing) Hu/Univ. of Maryland ADMINI 2017.12.22 186
Notice 2017 The Fall Semester Seminar ADMINI 2017.09.08 2681
246 11/28 (Tue) Dr. Woo-Jin Lee (Ministry of Science and ICT.) ADMINI 2017.11.24 945
245 11/24 (Fri) Takashi NOGUCH (University of the Ryukyus) ADMINI 2017.11.23 620
244 11/21 (Tue) Dr. Young Ki Lee (ETRI) file ADMINI 2017.11.20 849
243 11/22 (Wed) Prof. Sung Hoon Kang (Johns Hopkins University) file ADMINI 2017.11.20 1072
242 11/21 (Tue) Dr. Byoung Koun Min, (KIST) ADMINI 2017.11.17 1235
241 11/13 (Mon) Dr. Hans Aage Hiuler (Danish Power System) ADMINI 2017.11.10 613
» 11/13 (Mon) Prof. Jens Oluf Jensen (Technical University of Denmark) ADMINI 2017.11.10 614
239 11/14 (Tue) Prof. Jae-Byum Chang (Sungkyunkwan Univ) ADMINI 2017.11.10 644
238 11/7 (Tue) Prof. Su-Mi Hur (Chonnam National University) ADMINI 2017.11.05 466
237 10/31 (Tue) Director Jang Sae Young (Samsung Electronics) ADMINI 2017.10.26 501
236 11/6 (Mon) Prof. Redouane Borsali (Grenoble Alpes University) ADMINI 2017.10.26 591
235 11/6 ~ 7 Prof. Erik Luijten (Northwestern University) file ADMINI 2017.10.25 566
234 10/23 ~ 24 Prof. Paul C. McIntyre (Stanford University) file ADMINI 2017.10.25 494
233 10/24 (Tue) Prof. Sun-Jae Kim (Sejong, Univ) ADMINI 2017.10.20 922
232 10/19 (Thu) Prof. Sang Cheol, Jung (Suncheon University) ADMINI 2017.10.18 1284
231 10/10 (Tue) Dr. Joo Choi (POSCO) ADMINI 2017.09.29 2180