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NiCoP Nanoarray: A Superior Pseudocapacitor Electrode with High Areal Capacitance.

Menglai Kong1,2, Zao Wang2, Weiyi Wang1,2

  • 1College of Materials Science and Engineering, Sichuan University, Chengdu, 610065, Sichuan, P. R. China.

Chemistry (Weinheim an Der Bergstrasse, Germany)
|March 16, 2017
PubMed
Summary
This summary is machine-generated.

A novel conductive NiCoP nanoarray on nickel foam electrode enhances supercapacitor performance. This material offers high capacitance and stability, demonstrating practical applications in lighting and hydrogen production.

Keywords:
NiCoP nanoarrayelectrochemistryhigh areal capacitancemultifunctionalsupercapacitors

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Area of Science:

  • Materials Science
  • Electrochemistry
  • Energy Storage

Background:

  • Supercapacitors require electrode materials with high conductivity and surface area.
  • Developing advanced electrode materials is crucial for high-performance energy storage devices.

Purpose of the Study:

  • To demonstrate the efficacy of a conductive NiCoP nanoarray on nickel foam (NiCoP/NF) as a superior pseudocapacitor electrode.
  • To evaluate the electrochemical performance and practical applications of the NiCoP/NF electrode.

Main Methods:

  • Fabrication of NiCoP nanoarray on nickel foam (NiCoP/NF).
  • Electrochemical characterization including cyclic voltammetry, galvanostatic charge-discharge, and electrochemical impedance spectroscopy.
  • Assembly and testing of an asymmetric supercapacitor (ASC) device.
  • Demonstration of practical applications, including powering LEDs and driving an alkaline water electrolyzer.

Main Results:

  • NiCoP/NF exhibited high areal capacitances of 9.2 and 5.97 F/cm² at 2 and 50 mA/cm², respectively.
  • The ASC device achieved an energy density of 1.16 mWh/cm² at a power density of 1.6 mW/cm².
  • The ASC device maintained 72% capacitance after 2000 cycles at 50 mA/cm² and demonstrated practical utility in powering electronics and for hydrogen production.

Conclusions:

  • The conductive NiCoP/NF nanoarray is a promising electrode material for high-performance supercapacitors.
  • The developed electrode material shows excellent rate capability, cycling stability, and practical applicability.
  • This work contributes to the advancement of energy storage technologies and electrochemical applications.