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.

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Notice 4/24 (Tue) Kyeong Ho Chang (CEO, Innox Advanced Materials) ADMINI 2018.04.23 3
Notice 4/10 (Tue) Prof. Ki Jun, Yu (Yonsei Univ., School of Electrical and Electronic Engineering) ADMINI 2018.04.09 96
Notice 4/3 (Tue) Master Byung-Gi Choi (Samsung Advanced Institute of Technology) ADMINI 2018.04.02 104
Notice 3/27 (Tue) Prof. Seungbum Hong (KAIST MSE) ADMINI 2018.03.26 150
Notice 3/20 (Tue) Prof. Jung In-Ho (Seoul National University, MSE) ADMINI 2018.03.20 154
Notice 3/13 (Tue) Prof. Jong-Beom Baek (School of Energy and Chemical Engineering, UNIST) ADMINI 2018.03.13 163
Notice 3/6 (Tue) Prof. Seok-Young Ryu (KAIST CS) ADMINI 2018.03.05 138
Notice 2/27 (Tue) Dr. Jin-Woo Han (NASA) ADMINI 2018.02.27 195
Notice 2/20 (Tue) Dr. Jae Beom Jang (Sungkyunkwan Univ) ADMINI 2018.02.19 155
Notice 2/8 (Thu) Prof. Pei-Chen Su (Nanyang Technological University) ADMINI 2018.02.05 163
Notice 2/13 (Tue) Prof. Sungkyu Kim (Northwestern Univ) ADMINI 2018.01.31 222
Notice 1/9 (Tue) Dr. Choon Won Byeon, ETRI ADMINI 2018.01.09 276
Notice 12/23 (Sat) Prof. Liangbing (Bing) Hu/Univ. of Maryland ADMINI 2017.12.22 300
Notice 2017 The Fall Semester Seminar ADMINI 2017.09.08 2803
246 11/28 (Tue) Dr. Woo-Jin Lee (Ministry of Science and ICT.) ADMINI 2017.11.24 1012
245 11/24 (Fri) Takashi NOGUCH (University of the Ryukyus) ADMINI 2017.11.23 677
244 11/21 (Tue) Dr. Young Ki Lee (ETRI) file ADMINI 2017.11.20 913
243 11/22 (Wed) Prof. Sung Hoon Kang (Johns Hopkins University) file ADMINI 2017.11.20 1138
242 11/21 (Tue) Dr. Byoung Koun Min, (KIST) ADMINI 2017.11.17 1295
241 11/13 (Mon) Dr. Hans Aage Hiuler (Danish Power System) ADMINI 2017.11.10 670
» 11/13 (Mon) Prof. Jens Oluf Jensen (Technical University of Denmark) ADMINI 2017.11.10 669