Korea Institute of Science and Technology (KIST), Korea Institute of Science and Technology (KIST), affiliation not provided to SSRN, affiliation not provided to SSRN, Korea Institute of Science and Technology (KIST), Korea Institute of Science and Technology (KIST), Korea Institute of Science and Technology (KIST), Korea Institute of Science and Technology (KIST) - Clean Energy Research Center, Korea University, affiliation not provided to SSRN, Korea Institute of Science and Technology (KIST), affiliation not provided to SSRN and Kyung Hee University - KHU-KIST Department of Conversing Science and Technology