Publications

Blend membranes of polybenzimidazole and an anion exchange ionomer (FAA3) for alkaline water electrolysis: Improved alkaline stability and conductivity

Konovalova, Anastasiia ; Kim, Hyemi ; Kim, Sangwon ; Lim, Ahyoun ; Park, Hyun Seo ; Kraglund, Mikkel Rykær ; Aili, David ; Jang, Jong Hyun ; Kim, Hyoung-Juhn ; Henkensmeier, Dirk
in: Journal of Membrane Science, vol: 564, pages: 653-662

Type: Journal article (Peer reviewed)

Status: Published | Year: 2018 | DOI: https://doi.org/10.1016/j.memsci.2018.07.074

Capabilities of fuel cell micro-CHPs in a smart grid perspective

Prag, Carsten Brorson ; Hallinder, Jonathan ; Ravn Nielsen, Eva

Type: Report

Status: Published | Year: 2018

Determination of Anion Transference Number and Phosphoric Acid Diffusion Coefficient in High Temperature Polymer Electrolyte Membranes

Becker, Hans ; Reimer, Uwe ; Aili, David ; Cleemann, Lars N. ; Jensen, Jens Oluf ; Lehnert, Werner ; Li, Qingfeng
in: Journal of the Electrochemical Society, vol: 165, issue: 10, pages: F863-F869

Type: Journal article (Peer reviewed)

Status: Published | Year: 2018 | DOI: https://doi.org/10.1149/2.1201810jes

Fuel Cell Electrolytes of Polybenzimidazole Membranes Cross-linked with Bis(chloromethyl) Arenes

Kirkebæk, A. ; Aili, D. ; Yue, B. ; Vassiliev, A. ; Cleemann, L. N. ; Jensen, J. O. ; Li, Q.
in: Fuel Cells, vol: 18, issue: 6, pages: 688-697

Type: Journal article (Peer reviewed)

Status: Published | Year: 2018 | DOI: https://doi.org/10.1002/fuce.201800090

High CO tolerance of new SiO2 doped phosphoric acid/polybenzimidazole polymer electrolyte membrane fuel cells at high temperatures of 200–250 °C

Cheng, Yi ; Zhang, Jin ; Lu, Shanfu ; Kuang, Haohua ; Bradley, John ; De Marco, Roland ; Aili, David ; Li, Qingfeng ; Cui, Cheng Qiang ; Jiang, San Ping
in: International Journal of Hydrogen Energy, vol: 43, issue: 49, pages: 22487-22499

Type: Journal article (Peer reviewed)

Status: Published | Year: 2018 | DOI: https://doi.org/10.1016/j.ijhydene.2018.10.036

Metal alloys for the new generation of compressors at hydrogen stations: Parametric study of corrosion behavior

Arjomand Kermani, Nasrin ; Petrushina, Irina ; Nikiforov, Aleksey Valerievich ; Rokni, Masoud
in: Renewable Energy, vol: 116, issue: Part A, pages: 805-814

Type: Journal article (Peer reviewed)

Status: Published | Year: 2018 | DOI: https://doi.org/10.1016/j.renene.2017.08.066

Non-economic barriers to large-scale market uptake of fuel cell based micro-CHP technology

Prag, Carsten Brorson ; Ravn Nielsen, Eva

Type: Report

Status: Published | Year: 2018

Rechargeable organic-air redox flow batteries

Leung, P. ; Aili, D. ; Xu, Q. ; Rodchanarowan, A. ; Shah, A. A.
in: Sustainable Energy & Fuels, vol: 2, issue: 10, pages: 2252-2259

Type: Journal article (Peer reviewed)

Status: Published | Year: 2018 | DOI: https://doi.org/10.1039/c8se00205c

Vapor pressure and specific electrical conductivity in the solid and molten H₂O-CsH₂PO₄-CsPO₃ system—a novel electrolyte for water electrolysis at ~ 225–400 °C

Nikiforov, Aleksey Valerievich ; Berg, Rolf W. ; Bjerrum, Niels J.
in: Ionics, vol: 24, issue: 9, pages: 2761-2782

Type: Journal article (Peer reviewed)

Status: Published | Year: 2018 | DOI: https://doi.org/10.1007/s11581-017-2420-3

Acid-base chemistry and proton conductivity of CsHSO₄, CsH₂PO₄ and their mixtures with N-heterocycles

Aili, David ; Gao, Ying ; Han, Junyoung ; Li, Qingfeng
in: Solid State Ionics, vol: 306, pages: 13-19

Type: Journal article (Peer reviewed)

Status: Published | Year: 2017 | DOI: https://doi.org/10.1016/j.ssi.2017.03.012

A Durability Study of High-temperature PEMFC. Effects of Operating Parameters and Thermal Curing

Jensen, Jens Oluf ; Søndergaard, Tonny ; Aili, David ; Steenberg, Thomas ; Hjuler, Hans Aage ; Becker, Hans ; Zhong, Lijie ; Li, Qingfeng
Presented at: 5th International CARISMA Conference (2017)

Type: Conference abstract for conference

Status: Published | Year: 2017

Development of Hybrid Vehicle for ground service handling operations

Nikiforov, A. V. ; La Seta, A. ; Rokni, M. ; Bjerrum, N. J.
Presented at: 15th International Conference on Environmental Science and Technology

Type: Paper (Peer reviewed)

Status: Published | Year: 2017

Gel Electrolytes of Covalent Network Polybenzimidazole and Phosphoric Acid by Direct Casting

Kirkebæk, Andreas ; Aili, David ; Henkensmeier, Dirk ; Jensen, Jens Oluf ; Li, Qingfeng
in: Macromolecular Materials and Engineering, vol: 302, issue: 12

Type: Journal article (Peer reviewed)

Status: Published | Year: 2017 | DOI: https://doi.org/10.1002/mame.201700347

In Situ Formed Phosphoric Acid/Phosphosilicate Nanoclusters in the Exceptional Enhancement of Durability of Polybenzimidazole Membrane Fuel Cells at Elevated High Temperatures

Zhang, Jin ; Aili, David ; Bradley, John ; Kuang, Haohua ; Pan, Chao ; De Marco, Roland ; Li, Qingfeng ; Jiang, San Ping
in: Journal of the Electrochemical Society, vol: 164, issue: 14, pages: F1615-F1625

Type: Journal article (Peer reviewed)

Status: Published | Year: 2017 | DOI: https://doi.org/10.1149/2.1051714jes

Ion-Exchange-Induced Selective Etching for the Synthesis of Amino-Functionalized Hollow Mesoporous Silica for Elevated-High-Temperature Fuel Cells

Zhang, Jin ; Liu, Jian ; Lu, Shanfu ; Zhu, Haijin ; Aili, David ; Marco, Roland De ; Xiang, Yan ; Forsyth, Maria ; Li, Qingfeng ; Jiang, San Ping
in: A C S Applied Materials and Interfaces, vol: 9, issue: 37, pages: 31922–31930

Type: Journal article (Peer reviewed)

Status: Published | Year: 2017 | DOI: https://doi.org/10.1021/acsami.7b09591

Learning points from demonstration of 1000 fuel cell based micro-CHP units - Summary of analyses from the ene.field project

Ravn Nielsen, Eva ; Prag, Carsten Brorson

Type: Report

Status: Published | Year: 2017

Long-term durability of HT-PEM fuel cells based on thermally crosslinked polybenzimidazole

Søndergaard, Tonny ; Cleemann, Lars Nilausen ; Becker, Hans ; Aili, David ; Steenberg, Thomas ; Hjuler, Hans Aage ; Seerup, Larisa ; Li, Qingfeng ; Jensen, Jens Oluf
in: Journal of Power Sources, vol: 342, pages: 570-578

Type: Journal article (Peer reviewed)

Status: Published | Year: 2017 | DOI: https://doi.org/10.1016/j.jpowsour.2016.12.075

Probing phosphoric acid redistribution and anion migration in polybenzimidazole membranes

Becker, Hans ; Cleemann, Lars Nilausen ; Aili, David ; Jensen, Jens Oluf ; Li, Qingfeng
in: Electrochemistry Communications, vol: 82, pages: 21-24

Type: Journal article (Peer reviewed)

Status: Published | Year: 2017 | DOI: https://doi.org/10.1016/j.elecom.2017.07.005

Towards a stable ion-solvating polymer electrolyte for advanced alkaline water electrolysis

Aili, David ; Wright, Andrew G. ; Kraglund, Mikkel Rykær ; Jankova Atanasova, Katja ; Holdcroft, Steven ; Jensen, Jens Oluf
in: Journal of Materials Chemistry A, vol: 5, issue: 10, pages: 5055-5066

Type: Journal article (Peer reviewed)

Status: Published | Year: 2017 | DOI: https://doi.org/10.1039/c6ta10680c

Acid–Base Chemistry and Proton Conductivity

Li, Qingfeng ; Aili, David ; Savinell, Robert F. ; Jensen, Jens Oluf
part of: High Temperature Polymer Electrolyte Membrane Fuel Cells, pages: 37-57, 2016, Springer, Switzerland

Type: Book chapter (Peer reviewed)

Status: Published | Year: 2016 | DOI: https://doi.org/10.1007/978-3-319-17082-4_3

Advanced materials for polymer electrolyte membrane fuel cells

Aili, David ; Jensen, Jens Oluf ; Li, Qingfeng
part of: Electrochemical Energy: Advanced Materials and Technologies, pages: 363-383, 2016, CRC Press, Boca Raton

Type: Book chapter (Peer reviewed)

Status: Published | Year: 2016

Amino-Functional Polybenzimidazole Blends with Enhanced Phosphoric Acid Mediated Proton Conductivity as Fuel Cell Electrolytes

Aili, David ; Javakhishvili, Irakli ; Han, Junyoung ; Jankova Atanasova, Katja ; Pan, Chao ; Hvilsted, Søren ; Jensen, Jens Oluf ; Bjerrum, Niels J. ; Li, Qingfeng
in: Macromolecular Chemistry and Physics, vol: 217, issue: 10, pages: 1161-1168

Type: Journal article (Peer reviewed)

Status: Published | Year: 2016 | DOI: https://doi.org/10.1002/macp.201600059

Comparative study of PBI Cross Linked Utilizing Agents of Varying Steric Configurations

Kirkebcek, Andreas ; Aili, David ; Li, Qingfeng ; Jensen, Jens Oluf
part of: ISPE-XV, Uppsala 15-19th August 2016, pages: 124-124, 2016
Presented at: 15th International Symposium on Polymer Electrolytes

Type: Conference abstract in proceedings (Peer reviewed)

Status: Published | Year: 2016

Comparative Study of the Effect of Various Cross Linkers upon Membrane Properties

Kirkebæk, Andreas ; Aili, David ; Li, Qingfeng ; Jensen, Jens Oluf
Presented at: Workshop on Ion Exchange Membranes for Energy Applications

Type: Poster (Peer reviewed)

Status: Published | Year: 2016

Corrosion behavior of construction materials for ionic liquid hydrogen compressor

Arjomand Kermani, Nasrin ; Petrushina, Irina ; Nikiforov, Aleksey Valerievich ; Jensen, Jens Oluf ; Rokni, Masoud
in: International Journal of Hydrogen Energy, vol: 41, issue: 38, pages: 16688-16695

Type: Journal article (Peer reviewed)

Status: Published | Year: 2016 | DOI: https://doi.org/10.1016/j.ijhydene.2016.06.221

Electrochemical Studies of Corrosion in Liquid Electrolytes for Energy Conversion Applications at Elevated Temperatures

Nikiforov, Aleksey Valerievich ; Petrushina, Irina ; Bjerrum, Niels J.
part of: High Temperature Corrosion, pages: 89-100, 2016, InTechOpen

Type: Book chapter (Peer reviewed)

Status: Published | Year: 2016 | DOI: https://doi.org/10.5772/64003

Exceptional durability enhancement of PA/PBI based polymer electrolyte membrane fuel cells for high temperature operation at 200°C

Aili, David ; Zhang, Jin ; Jakobsen, Mark Tonny Dalsgaard ; Zhu, Haijin ; Yang, Tianyu ; Liu, Jian ; Forsyth, Maria ; Pan, Chao ; Jensen, Jens Oluf ; Cleemann, Lars Nilausen ; Jiang, San Ping ; Li, Qingfeng
in: Journal of Materials Chemistry A, vol: 4, issue: 11, pages: 4019-4024

Type: Journal article (Peer reviewed)

Status: Published | Year: 2016 | DOI: https://doi.org/10.1039/c6ta01562j

Fuel Cells and Electrolyzers. Recent Progress at DTU Energy and the Role in a Sustainable Society

Jensen, Jens Oluf ; Hu, Yang ; Aili, David ; Zhong, Lijie ; Cleemann, Lars Nilausen ; Li, Qingfeng
Presented at: International Symposium in Shiinoki Cultural Complex

Type: Conference abstract for conference (Peer reviewed)

Status: Published | Year: 2016

High temperature polymer electrolyte membrane fuel cells: Approaches, status, and perspectives

Li, Qingfeng ; Aili, David ; Hjuler, Hans Aage (Editor) ; Jensen, Jens Oluf

Type: Book (Peer reviewed)

Status: Published | Year: 2016 | DOI: https://doi.org/10.1007/978-3-319-17082-4

Intermediate Temperature Proton Conductors – Why and How

Li, Qingfeng ; Aili, David ; Jensen, Jens Oluf ; Cleemann, Lars Nilausen
Presented at: International Workshop on Ethanol Electro-Oxidation

Type: Conference abstract for conference (Peer reviewed)

Status: Published | Year: 2016

Introduction

Jensen, Jens Oluf ; Hjuler, Hans Aage ; Aili, David ; Li, Qingfeng
part of: High Temperature Polymer Electrolyte Membrane Fuel Cells, pages: 1-4, 2016, Springer, Switzerland

Type: Book chapter

Status: Published | Year: 2016 | DOI: https://doi.org/10.1007/978-3-319-17082-4_1

Kinetic Study of the Chemical Vapor Deposition of Tantalum in Long Narrow Channels

Mugabi, James Atwoki ; Eriksen, Søren ; Petrushina, Irina ; Christensen, Erik ; Bjerrum, Niels J.
in: Advanced Materials Interfaces, vol: 3, issue: 14

Type: Journal article (Peer reviewed)

Status: Published | Year: 2016 | DOI: https://doi.org/10.1002/admi.201500795

Manufacturing of a LaNiO₃ composite electrode for oxygen evolution in commercial alkaline water electrolysis

Egelund, Sune ; Caspersen, Michael ; Nikiforov, Aleksey Valerievich ; Møller, Per
in: International Journal of Hydrogen Energy, vol: 41, issue: 24, pages: 10152-10160

Type: Journal article (Peer reviewed)

Status: Published | Year: 2016 | DOI: https://doi.org/10.1016/j.ijhydene.2016.05.013

Polybenzimidazole Membranes by Post Acid Doping

Aili, David ; Jensen, Jens Oluf ; Li, Qingfeng
part of: High Temperature Polymer Electrolyte Membrane Fuel Cells, pages: 195-215, 2016, Springer, Switzerland

Type: Book chapter (Peer reviewed)

Status: Published | Year: 2016 | DOI: https://doi.org/10.1007/978-3-319-17082-4_9

Polybenzimidazole membranes for zero gap alkaline electrolysis cells

Kraglund, Mikkel Rykær ; Aili, David ; Christensen, Erik ; Jensen, Jens Oluf
Presented at: The 21st World Hydrogen Energy Conference (WHEC)

Type: Poster (Peer reviewed)

Status: Published | Year: 2016

Protic Organic Ionic Plastic Crystals: Fast Solid-State Proton Conductors

Luo, Jiangshui ; Aili, David ; Pan, Chao ; Li, Qingfeng
part of: ISPE-XV, Uppsala 15-19th August 2016, pages: 179-179, 2016
Presented at: 15th International Symposium on Polymer Electrolytes

Type: Conference abstract in proceedings (Peer reviewed)

Status: Published | Year: 2016

Specific electrical conductivity in molten potassium dihydrogen phosphate KH₂PO₄ - An electrolyte for water electrolysis at ∼300°C

Nikiforov, Aleksey Valerievich ; Berg, Rolf W. ; Petrushina, Irina ; Bjerrum, Niels J.
in: Applied Energy, vol: 175, pages: 545-550

Type: Journal article (Peer reviewed)

Status: Published | Year: 2016 | DOI: https://doi.org/10.1016/j.apenergy.2016.04.111

Synthesis of Polybenzimidazoles

Yang, Jingshuai ; He, Ronghuan ; Aili, David
part of: High Temperature Polymer Electrolyte Membrane Fuel Cells, pages: 151-167, 2016, Springer, Switzerland

Type: Book chapter (Peer reviewed)

Status: Published | Year: 2016 | DOI: https://doi.org/10.1007/978-3-319-17082-4_7

Techniques for PBI Membrane Characterization

Henkensmeier, Dirk ; Aili, David
part of: High Temperature Polymer Electrolyte Membrane Fuel Cells, pages: 127-150, 2016, Springer, Switzerland

Type: Book chapter (Peer reviewed)

Status: Published | Year: 2016 | DOI: https://doi.org/10.1007/978-3-319-17082-4_6

Ternary alkaline polybenzimidazole electrolytes

Aili, David ; Kraglund, Mikkel Rykær ; Jensen, Jens Oluf
Presented at: 21st World Hydrogen Energy Conference 2016

Type: Conference abstract for conference (Peer reviewed)

Status: Published | Year: 2016

Understanding ternary poly(potassium benzimidazolide)-based polymer electrolytes

Aili, David ; Jankova Atanasova, Katja ; Han, Junyoung ; Bjerrum, Niels J. ; Jensen, Jens Oluf ; Li, Qingfeng
in: Polymer, vol: 84, pages: 304-310

Type: Journal article (Peer reviewed)

Status: Published | Year: 2016 | DOI: https://doi.org/10.1016/j.polymer.2016.01.011

Water vapor pressure over molten KH₂PO₄ and demonstration of water electrolysis at ∼300ºC

Berg, Rolf W. ; Nikiforov, Aleksey Valerievich ; Petrushina, Irina ; Bjerrum, Niels J.
in: Applied Energy, vol: 180, pages: 269-275

Type: Journal article (Peer reviewed)

Status: Published | Year: 2016 | DOI: https://doi.org/10.1016/j.apenergy.2016.07.123

Zero-Gap Alkaline Water Electrolysis Using Ion-Solvating Polymer Electrolyte Membranes at Reduced KOH Concentrations

Kraglund, Mikkel Rykær ; Aili, David ; Jankova Atanasova, Katja ; Christensen, Erik ; Li, Qingfeng ; Jensen, Jens Oluf
in: Journal of The Electrochemical Society, vol: 163, issue: 11, pages: F3125-F3131

Type: Journal article (Peer reviewed)

Status: Published | Year: 2016 | DOI: https://doi.org/10.1149/2.0161611jes

1,2,4-Triazolium perfluorobutanesulfonate as an archetypal pure protic organic ionic plastic crystal electrolyte for all-solid-state fuel cells

Luo, Jiangshui ; Jensen, Annemette Hindhede ; Brooks, Neil R. ; Sniekers, Jeroen ; Knipper, Martin ; Aili, David ; Li, Qingfeng ; Vanroy, Bram ; Wübbenhorst, Michael ; Yan, Feng ; Van Meervelt, Luc ; Shao, Zhigang ; Fang, Jianhua ; Luo, Zheng-Hong ; De Vos, Dirk E. ; Binnemans, Koen ; Fransaer, Jan
in: Energy & Environmental Science, vol: 8, issue: 4, pages: 1276-1291

Type: Journal article (Peer reviewed)

Status: Published | Year: 2015 | DOI: https://doi.org/10.1039/c4ee02280g

Acid-base Chemistry and Proton Conductivity of High Temperature Polymer Electrolytes

Li, Qingfeng ; Aili, David ; Cleemann, Lars Nilausen ; Jensen, Jens Oluf
Presented at: International Conference on Innovative Electrochemical Energy Materials and Technologies 2015

Type: Conference abstract for conference (Peer reviewed)

Status: Published | Year: 2015

CsH₂PO₄/NdPO₄ Composites as Proton Conducting Electrolytes for Intermediate Temperature Fuel Cells

Anfimova, Tatiana ; Jensen, Annemette Hindhede ; Christensen, Erik ; Jensen, Jens Oluf ; Bjerrum, Niels J. ; Li, Qingfeng
in: Journal of The Electrochemical Society, vol: 162, issue: 4, pages: F436-F441

Type: Journal article (Peer reviewed)

Status: Published | Year: 2015 | DOI: https://doi.org/10.1149/2.0671504jes

Methyl phosphate formation as a major degradation mode of direct methanol fuel cells with phosphoric acid based electrolytes

Aili, David ; Vassiliev, Anton ; Jensen, Jens Oluf ; Schmidt, Thomas J. ; Li, Qingfeng
in: Journal of Power Sources, vol: 279, pages: 517-521

Type: Journal article (Peer reviewed)

Status: Published | Year: 2015 | DOI: https://doi.org/10.1016/j.jpowsour.2015.01.010

Porous poly(perfluorosulfonic acid) membranes for alkaline water electrolysis

Aili, David ; Hansen, Martin Kalmar ; Andreasen, Jens Wenzel ; Zhang, Jingdong ; Jensen, Jens Oluf ; Bjerrum, Niels J. ; Li, Qingfeng
in: Journal of Membrane Science, vol: 493, pages: 589–598

Type: Journal article (Peer reviewed)

Status: Published | Year: 2015 | DOI: https://doi.org/10.1016/j.memsci.2015.06.057

Specific Electrical Conductivity in Molten Potassium Dihydrogen Phosphate KH2PO4 Electrolyte at ~300 °C

Nikiforov, Aleksey Valerievich ; Berg, Rolf Willestofte ; Bjerrum, Niels Janniksen
in: Electrochemical Society. Meeting Abstracts (Online), vol: MA2015-02, issue: 1, pages: 204-204
Presented at: The 228th ECS Meeting

Type: Conference abstract in journal (Peer reviewed)

Status: Published | Year: 2015

Sulfonated copolyimide membranes derived from a novel diamine monomer with pendant benzimidazole groups for fuel cells

Li, Wei ; Guo, Xiaoxia ; Aili, David ; Fernandez, Santiago Martin ; Li, Qingfeng ; Fang, Jianhua
in: Journal of Membrane Science, vol: 481, pages: 44-53

Type: Journal article (Peer reviewed)

Status: Published | Year: 2015 | DOI: https://doi.org/10.1016/j.memsci.2015.01.048

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