文献类型：期刊文献

英文题名：One-Step Preparation of Co3o4/C/Ni(Oh)2@Nf Electrode for High Performance Supercapacitor

作者：Zhao, Chongjun[1]; Li, Mingkun[1]; Guo, Huiming[1]; Tong, Xiangzhi[1]; Gao, Wenjie[1]; Zhao, Chunhua[1]

机构：[1] Key Laboratory for Ultrafine Materials of Ministry of Education, Shanghai Key Laboratory of Advanced Polymeric Materials, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai, 200237, China

年份：2023

外文期刊名：SSRN

收录：EI(收录号：20230391264)

语种：英文

外文关键词：Amino acids - Antennas - Capacitance - Electrodes - Energy storage - Storage (materials) - Unmanned aerial vehicles (UAV)

摘要：Energy storage devices (Supercapacitor and battery) facilitate it possible to substitute endless and clean new energy sources including solar, wind and tidy energy (disadvantage: discontinuous and unstable) for limited fossil resources, and wireless electric-driven for wire electric-driven. Energy storage devices also play key roles in developing general electric-driven tools including automobiles and advanced equipment, e.g., unmanned aerial vehicles (UAV) and robots. The above utilization is strongly dependent on the performance of the energy storage device, especially the electrode. Herein, a new strategy is suggested to synthesize, construct and load the activated material of Co3O4/Ni(OH)2 on the conductive Ni foam in one hydrothermal step, i.e., the electrode is directly prepared. By introducing glutamic acid, which acts as a weak oxidant for NF, a complex agent for Co2+ ions, as well as a carbon source, a composite electrode of Co3O4/C/Ni(OH)2@NF is easily built. As-prepared Co3O4/C/Ni(OH)2@NF has excellent supercapacitor performance: Its electrode has a specific capacitance of 2963.68 mF/cm2 (2 mA/cm2), and capacitance retention of 105% after 5000 cycles, while its asymmetric supercapacitor (ASC) provides an energy density of 301.22 μWh/cm2 at the power density of 1.88 mW/cm2. ? 2023, The Authors. All rights reserved.