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제 목 : Energy Storage in Chemical Bonds for Realizing Carbon Neutrality
연 사 : 윤창원 교수(POSTECH)
일 시 : 2021년 10월 14일(목) 오후 4시 30분
<Webex참여>방번호: 170 974 2739
Energy Storage in Chemical Bonds for Realizing Carbon Neutrality
Chang Won Yoon
Department of Chemical Engineering, POSTECH
Hydrogen Research Center, Research Institute of Industrial Science & Technology (RIST)
To address the increasing energy and environmental issues, it is necessary to increase renewable
energy production and utilization. Due to the intermittent and unpredictable nature of renewable
energy production, however, the energy produced must be stored and available again when needed.
Hydrogen is recognized as a clean renewable energy carrier because of its high gravimetric energy
storage density of ca. 33.3 kWh·kg-1. But, the low volumetric energy density of gaseous hydrogen (2.97
Wh·L-1@273 K & 1 atm) limited its use for numerous energy applications particularly associated with
high capacity and long distance hydrogen transportation. In the regard, a safe and economically viable
hydrogen storage system that enables to transport mass quantities of hydrogen in a chemical form has
attracted significant attention. Promising candidate materials for this purpose include liquid organic
hydrogen carriers (LOHCs) and ammonia (NH3) which allow hydrogen to be stored and released
reversibly through chemical reactions. In the presentation, recent trends for chemical hydrogen
storage technology utilizing LOHC and NH3 will be introduced.