Facile Electrodeposition of NiCo2O4 Nanosheets on Porous Carbonized Wood for Wood-Derived Asymmetric Supercapacitors

• DOI: 10.3390/polym14132521
• Publication Date: 2022-06-22T08:12:01Z
• Authors: Jingjiang Yang; Huiling Li; Shuijian He; Haijuan Du; Kunming Liu; Chunmei Zhang; Shaohua Jiang
• Keywords: supercapacitor; electrodeposition; electrochemical performance; NiCo₂O₄; carbonized wood; 01 natural sciences; 7. Clean energy; Article; 0104 chemical sciences

Multichannel-porous carbon derived from wood can serve as a conductive substrate for fast charge transfer and ion diffusion, supporting the high-theory capacitance of pseudocapacitive materials. Herein, NiCo2O4 nanosheets, which are hierarchically porous, anchored on surface carbonized via electrodeposition free-binder high-performance supercapacitor electrode materials, were proposed. Benefiting effectively alleviated nanosheets accumulation sufficient active area redox reaction, N-doped wood-derived porous carbon-NiCo2O4 nanosheet hybrid material (NCNS-NCW) exhibited specific electric capacity 1730 F g-1 at 1 A in mol L-1 KOH splendid electrochemical firmness with 80% retention after cycles. Furthermore, an all-wood-based asymmetric based NCNS-NCW//NCW was assembled high energy density 56.1 Wh kg-1 watt 349 W achieved. Due to great performance NCNS-NCW, we expect it be used promise storage equipment.