Affiliation: | a Department of Materials Science and Engineering, Faculty of Engineering, Kyushu University, Fukuoka 819-0395, Japan b WPI, International Institute for Carbon-Neutral Energy Research (I2CNER), Kyushu University, Fukuoka 819-0395, Japan c Research Laboratory for High Voltage Electron Microscopy, Kyushu University, Fukuoka 819-0395, Japan d Department of Materials Science and Engineering, Lehigh University, Bethlehem, PA 18015, USA |