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An Ultralong, Highly Oriented Nickel-Nanowire-Array Electrode Scaffold for High-Performance Compressible
Chao Xu1, Ziheng Li1, Cheng Yang1
1Division of Energy and Environment, Graduate School at Shenzhen, Tsinghua University, Shenzhen, 518055, P. R. China.
Advanced Materials (Deerfield Beach, Fla.)
|April 11, 2016
Summary
Ultralong nickel nanowire arrays enable high-performance asymmetric supercapacitors. These devices offer superior energy and power densities, plus exceptional stability, even after significant compression.
Area of Science:
- Materials Science
- Electrochemistry
- Nanotechnology
Background:
- Advanced electrode materials are crucial for high-performance energy storage devices.
- Developing stable and efficient supercapacitors requires innovative scaffold designs.
Purpose of the Study:
- To utilize ultralong, highly oriented nickel (Ni) nanowire arrays as a scaffold for advanced supercapacitor electrodes.
- To investigate the performance of asymmetric supercapacitors built with this novel scaffold.
Main Methods:
- Fabrication of ultralong, highly oriented Ni nanowire arrays.
- Loading metal-oxide and conductive polymer electrode materials onto the Ni nanowire scaffold.
- Assembly and testing of asymmetric supercapacitors.
Main Results:
- The Ni nanowire scaffold supports high mass loading of electrode materials.
- The resulting asymmetric supercapacitors demonstrate excellent energy and power densities.
- The supercapacitors exhibit remarkable stability, maintaining performance after fourfold compression and ultrahigh cycle counts.
Conclusions:
- Ultralong Ni nanowire arrays provide a robust and effective scaffold for high-performance supercapacitor electrodes.
- This approach leads to advanced asymmetric supercapacitors with superior energy density, power density, and cycle stability.
