Ni3+ doped monolayer layered double hydroxide nanosheets as efficient electrodes for supercapacitors

作者：Zhao, Yufei; Wang, Qing; Bian, Tong; Yu, Huijun; Fan, Hua; Zhou, Chao; Wu, Li-Zhu; Tung, Chen-Ho; O'Hare, Dermot; Zhang, Tierui^*

来源：Nanoscale, 2015, 7(16): 7168-7173.

DOI：10.1039/c5nr01320h

• ENERGY DENSITY
• COBALT HYDROXIDE
• ANION-EXCHANGE
• SINGLE-LAYER
• NI(OH)(2)
• GRAPHENE
• STATE
• ARCHITECTURE
• NANOHYBRIDS
• COMPOSITE

Ni3+ doped NiTi layered double hydroxide (NiTi-LDH) monolayer nanosheets with a particle size of similar to 20 nm and a thickness of similar to 0.9 nm have been successfully prepared through a facile bottom-up approach. These NiTi-LDH monolayer nanosheets exhibit excellent supercapacitor performance, including a high specific pseudocapacitance (2310 F g(-1) at 1.5 A g(-1)) and long durability compared with bulk LDH, owing to highly exposed conductive Ni3+ species (NiOOH) which lead to the increased mobility rate of surface charge and electrolyte-transfer. Therefore, this work is expected to take a significant step towards exploring novel 2D monolayer electrode materials with unique physical and chemical properties for applications in energy storage and conversion.

• 出版日期2015
• 单位中国科学院理化技术研究所; 中国科学院大学