Simple Synthesis of Flower-like Manganese Dioxide nanostructures on Cellulose Nanocrystal for High-Performance Supercapacitor and wearable electrodes
writer：Lu-Min Chen?, Hou-Yong Yu , Duan-Chao Wang, Ting Yang, Ju-Ming Yao, Kam Chiu Tam
keywords：Cellulose nanocrystal, Manganese dioxide, Supercapacitor, Electrochemical properties
source：期刊
Issue time：2019年
This work firstly reports cellulose nanocrystal/manganese dioxide (CNC-MnO2) electrode composites with flower-like MnO2 nanostructures via facile one-step in-situ controlled synthesis. The denser flower-shaped nanostructures of CNC-MnO2 composites improved the electrolyte/electrode contact interface, providing nanochannels for ions diffusion that enhanced both electrolyte infiltration and active material utilization. A large specific capacitance of 306.3 F g-1 with high energy density was achieved due to good cycling stability and ultralow resistance. Moreover, the CNC-MnO2 composites were successfully assembled into flexibility solid-state-supercapacitor with good electrochemical performance and bending stability. This study provides a simple approach to combine CNC-MnO2 composite electrode with commercial textile and conductive polymers (e.g. polypyrrole) to produce wearable electronic/energy devices.