신소재공학과

행사일 20171113 

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

■ 초청자 : 신소재공학과 조은애 교수 (T. 3317)      
■ 일시 : 11 13일 (월오후 4      
■ 장소 : 응용공학동 (W1-1) 2층 2425      

 

■ 내용(초록) : 

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 7/25 (Wed) 김창섭 박사 (Department of MSE, MIT) ADMINI 2018.07.24 16
Notice 7/13 (Fri) Prof. Dong Ryeol Whang (Johannes Kepler University Linz,Austria) ADMINI 2018.07.09 13
Notice 6/5 (Tue) 이성환 교수 (Baylor University) ADMINI 2018.06.05 54
Notice 5/29 (Tue) 오상호 교수 (연세대학교 의과대학 피부과학교실) ADMINI 2018.05.29 51
Notice 5/15 (Tue) 김명길 교수 (중앙대 화학과) ADMINI 2018.05.15 93
252 11/28 (Tue) 이우진 서기관 (과학기술정보통신부) ADMINI 2017.11.24 575
251 11/24 (Fri) Takashi NOGUCH (University of the Ryukyus) ADMINI 2017.11.23 359
250 11/21 (Tue) 이영기 박사 (한국전자통신연구원) file ADMINI 2017.11.20 525
249 11/22 (Wed) 강성훈 교수 (Johns Hopkins Unviersity) file ADMINI 2017.11.20 574
248 11/21 (Tue) 민병권 센터장 (한국과학기술연구원) ADMINI 2017.11.17 715
247 11/13 (Mon) Dr. Hans Aage Hiuler (Danish Power System) ADMINI 2017.11.10 188
» 11/13 (Mon) Prof. Jens Oluf Jensen (Technical University of Denmark) ADMINI 2017.11.10 292
245 11/14 (Tue) 장재범 교수 (성균관대학교) ADMINI 2017.11.10 326
244 11/7 (Tue) 허수미 교수 (전남대학교 ADMINI 2017.11.05 215
243 10/31 (Tue) 장세영 상무 (삼성전자) ADMINI 2017.10.26 206
242 11/6 (Mon) Redouane Borsali 교수 (Grenoble Alpes University) ADMINI 2017.10.26 196
241 11/6 ~ 7 Erik Luijten 교수 (Northwestern University) file ADMINI 2017.10.25 229
240 10/23 ~ 24 Paul C. McIntyre 교수 (Stanford University) file ADMINI 2017.10.25 174
239 10/24 (Tue) 김선재 교수 (세종대학교) ADMINI 2017.10.20 547
238 10/19 (Thu) 정상철 교수 (순천대학교) ADMINI 2017.10.18 956
237 10/10 (Tue) 최 주 원장 (POSCO) ADMINI 2017.09.29 1265
236 9/26 (Tue) 이태우 교수 (서울대학교) ADMINI 2017.09.22 541
235 9/19 (Tue) 이상민 의원 (국회의원) ADMINI 2017.09.15 664
234 9/12 (Tue) Monika Fleischer(Eberhard Karls University Tübingen) ADMINI 2017.09.14 337
233 2017 신소재공학과 가을학기 정기세미나 file ADMINI 2017.09.08 1893