Flexible honeycomb-like NiMn layered double hydroxide/carbon cloth architecture for electrochemical energy storage

• The honeycomb-like NiMn layered double hydroxide/carbon cloth architecture is fabricated.
• The honeycomb-like NiMn layered double hydroxide exhibits excellent electrochemical property.
• The flexible electrode demonstrates excellent electrochemical stability.

Honeycomb-like NiMn layered double hydroxide nanostructures have been successfully grafted on carbon cloth via a simple hydrothermal synthesis, which show good electrochemical performance with 2.687 C cm−2 (2239 F g−1) at a current density of 5 mA cm−2. It is notable that this honeycomb-like nanostructure could supply sufficient electrochemically active sites for effective redox reactions. Moreover, an asymmetric supercapacitor with good flexibility is fabricated based on this NiMn-LDH electrode. Over 110% of the initial capacitance is retained after repeating 10,000 charge-discharge cycles at a current density of 3 mA cm−2. The honeycomb-like NiMn-LDH flexible electrode with good performance proposes a new pathway for flexible energy storage devices.

Honeycomb-like NiMn-LDH is prepared by a facile hydrothermal route. The excellent electrochemical property exhibits that the as-prepared sample is a promising material for energy storage.Figure optionsDownload as PowerPoint slide