... Jianyi Lin2, and Li Lu*3 1School of Materials Science and Engineering, Nanjing University of Science and Technology, 200 Xiao Ling Wei, Nanjing, 210094, China 2Institute of Chemical and ... and Engineering Science (ICES), 1 Pesek Road, Jurong Island, 627833, Singapore 3Department of Mechanical Engineering, National University of Singapore, 9 Engineering Drive 1, 117576, Singapore ... walls, forming nearly vertically aligned MnO2 nanoflake arrays. As shown in the inset in Figure 4e, the interplanar spacing of MnO2 nanoflake has been measured to be 0.67 nm, which is in good...