TY - JOUR
T1 - A High-Capacity, Reversible Liquid Organic Hydrogen Carrier
T2 - H 2 -Release Properties and an Application to a Fuel Cell
AU - Jang, Munjeong
AU - Jo, Young Suk
AU - Lee, Won Jong
AU - Shin, Byeong Soo
AU - Sohn, Hyuntae
AU - Jeong, Hyangsoo
AU - Jang, Seong Cheol
AU - Kwak, Sang Kyu
AU - Kang, Jeong Won
AU - Yoon, Chang Won
N1 - Funding Information:
This work was supported by the Technology Development Program to Solve Climate Changes of the National Research Foundation (NRF) funded by the Ministry of Science, ICT, and Future Planning (2015M1A2A2074688), the New & Renewable Energy Core Technology Program of the Korea Institute of Energy Technology Evaluation and Planning (KETEP), granted financial resource from the Ministry of Trade, Industry & Energy, Republic of Korea (20153030041030), as well as the KIST institutional program funded by the Korea Institute of Science and Technology (2E28272).
PY - 2019/1/7
Y1 - 2019/1/7
N2 - Hydrogen storage in the form of a liquid chemical is an important issue that can bridge the gap between sustainable hydrogen production and utilization with a fuel cell, which is one of the essential sectors in the hydrogen economy. Herein, the application of a potential liquid organic hydrogen carrier, consisting of biphenyl and diphenylmethane, is demonstrated as a safe and economical hydrogen storage material. The presented material is capable of a reversible storage and release of molecular hydrogen with 6.9 wt % and 60 g-H 2 L -1 of gravimetric and volumetric hydrogen storage capacities, respectively, presenting superior properties as a hydrogen carrier. Equilibrium conversion and the required enthalpies of dehydrogenation are calculated using a density functional theory. Experimentally, dehydrogenation conversion of greater than 99% is achieved, producing molecular hydrogen with greater than 99.9% purity, with negligible side reactions; this is further confirmed by nuclear magnetic resonance spectroscopy. Less than 1% of the material is lost after cyclic tests of hydrogenation and dehydrogenation were conducted consecutively nine times. Finally, a dehydrogenation system is designed and operated in conjunction with a polymer electrolyte membrane fuel cell that can generate greater than 0.5 kW of electrical power in a continuous manner, proving its capability as a promising liquid organic hydrogen carrier.
AB - Hydrogen storage in the form of a liquid chemical is an important issue that can bridge the gap between sustainable hydrogen production and utilization with a fuel cell, which is one of the essential sectors in the hydrogen economy. Herein, the application of a potential liquid organic hydrogen carrier, consisting of biphenyl and diphenylmethane, is demonstrated as a safe and economical hydrogen storage material. The presented material is capable of a reversible storage and release of molecular hydrogen with 6.9 wt % and 60 g-H 2 L -1 of gravimetric and volumetric hydrogen storage capacities, respectively, presenting superior properties as a hydrogen carrier. Equilibrium conversion and the required enthalpies of dehydrogenation are calculated using a density functional theory. Experimentally, dehydrogenation conversion of greater than 99% is achieved, producing molecular hydrogen with greater than 99.9% purity, with negligible side reactions; this is further confirmed by nuclear magnetic resonance spectroscopy. Less than 1% of the material is lost after cyclic tests of hydrogenation and dehydrogenation were conducted consecutively nine times. Finally, a dehydrogenation system is designed and operated in conjunction with a polymer electrolyte membrane fuel cell that can generate greater than 0.5 kW of electrical power in a continuous manner, proving its capability as a promising liquid organic hydrogen carrier.
KW - Biphenyl
KW - Catalytic dehydrogenation
KW - Diphenylmethane
KW - Fuel cell
KW - Liquid organic hydrogen carrier
KW - Reversible hydrogen storage
UR - http://www.scopus.com/inward/record.url?scp=85059635815&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85059635815&partnerID=8YFLogxK
U2 - 10.1021/acssuschemeng.8b04835
DO - 10.1021/acssuschemeng.8b04835
M3 - Article
AN - SCOPUS:85059635815
VL - 7
SP - 1185
EP - 1194
JO - ACS Sustainable Chemistry and Engineering
JF - ACS Sustainable Chemistry and Engineering
SN - 2168-0485
IS - 1
ER -