Nowadays, electrochemical energy storage and conversion (EESC) devices have been rapidly developed due to an increase in demand for portable electronic equipment and electric vehicles. Among various EESC devices, supercapacitor, which shows high power density and cycle stability, is a strong candidate for high power applications. Porous carbon material is one of the most widely used for supercapacitor electrodes because of its high electric conductivity, high surface area and controllable porosity.[1] However, since porous carbon based supercapacitors store energy through surface charge separation at the electrode/electrolyte interface, it shows relatively low capacitance and energy density. Therefore, metal oxides or hydroxides are added onto the porous carbon in order to increase capacitance and energy density with reversible faradaic redox reactions occurring at the electrode surface.[2, 3] Herein, we report various metal hydroxide nanoparticles (e.g. Ni, Co, Fe) deposited onto nitrogen-doped porous carbon as high performance supercapacitor electrodes (2572.1 F/g at 100mC for Ni). Nitrogen-doped porous carbon has high electric conductivity (3200 S∙m-1), high surface area (442.83 m2g-1), high ion diffusion rate and enhanced wettability (contact angle 19.65°). Also, uniformly distributed metal hydroxide nanoparticles on the surfaces of nitrogen-doped porous carbon can facilitate fast intercalation and deintercalation of charges.[3] Therefore, our electrodes for supercapacitor developed in this work have a potential for high performance which can possibly be applied to various wearable energy storage devices. References 1. S. Lee, G. Kim, J. Kim, D. Kim, D. Lee, H. Han and J. Kim, Accepted in Adv. Sustainable Syst. (2018). 2. Y. Liu, N. Fu, G. Zhang, M. Xu, W. Lu, L. Zhou and H. Huang, Adv. Funct. Mater. 27, 1605307 (2017). 3. H. Li, Y . Gao, C. Wang, G. Yang, Adv. Energy Mater. 5, 1401767 (2015).