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A Flexible Supercapacitor with High True Performance.

Zhonghua Ren1, Yuanji Li1, Jie Yu1

  • 1Shenzhen Engineering Lab for Supercapacitor Materials, Shenzhen Key Laboratory for Advanced Materials, School of Material Science and Engineering, Harbin Institute of Technology, Shenzhen, University Town, Shenzhen 518055, China.

Iscience
|November 5, 2018
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Summary
This summary is machine-generated.

Researchers developed a flexible nickel current collector for supercapacitors, significantly boosting energy density and performance for the growing energy storage market.

Keywords:
Energy MaterialsMaterials SciencePorous Material

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Area of Science:

  • Materials Science
  • Electrochemistry
  • Energy Storage

Background:

  • The energy storage market demands higher true performance (energy density at high active mass loading) from supercapacitors.
  • Current supercapacitor performance is limited by conventional current collectors.
  • There is a need for advanced current collector materials to enhance supercapacitor true performance and flexibility.

Purpose of the Study:

  • To develop a novel, flexible through-pore structured nickel current collector for supercapacitors.
  • To evaluate the impact of the new current collector on supercapacitor performance, particularly energy density and flexibility.
  • To improve the 'true performance' of supercapacitors for advanced energy storage applications.

Main Methods:

  • Electrodeposition of nickel onto laser-drilled stainless steel sheets pre-filled with epoxy resin to create a through-pore structure.
  • Fabrication of electrodes using the novel nickel current collector.
  • Assembly and testing of supercapacitors with high active mass loading to assess performance and flexibility.

Main Results:

  • The developed nickel current collector exhibits excellent flexibility.
  • Supercapacitors utilizing the new current collector demonstrate superior performance compared to those with conventional collectors.
  • Achieved high energy densities of 50.4 W hr L⁻¹ and 30.1 W hr kg⁻¹ at high active mass loading, with enhanced flexibility.

Conclusions:

  • The through-pore structured nickel current collector effectively enhances supercapacitor true performance and flexibility.
  • This innovative approach offers a viable strategy for advancing supercapacitor technology.
  • The developed current collector addresses limitations of existing materials, paving the way for next-generation energy storage devices.