A 3D Porous Inverse Opal Ni Structure on a Cu Current Collector for Stable Lithium-Metal Batteries

Soo Min Jeong, Mihye Wu, Tae Yeong Kim, Dong Hwan Kim, Se Hee Kim, Hong Kyoon Choi, Yun Chan Kang, Do Youb Kim

Research output: Contribution to journalArticlepeer-review

Abstract

Lithium (Li) metal is considered the best anode material for next-generation high-energy density Li-metal batteries. However, Li dendrite formation and growth hinder the practical applications of Li metal anodes. Herein, we report a three-dimensional (3D) porous inverse opal nickel structure on a copper foil current collector (Ni IO@Cu) that has a controllable pore size and thickness and is fabricated via colloidal self-assembly and electrodeposition. The uniform interconnected pores with a large surface area of the Ni IO@Cu structure can effectively dissipate high areal current densities, resulting in the stable formation of a solid electrolyte interface and dense, dendrite-free, flat lithium deposits. In comparison to the use of bare Cu, the use of the Ni IO@Cu current collector resulted in greatly improved stability and lowered the voltage hysteresis in various Li plating/stripping tests. Moreover, Li-ion battery and Li-sulfur battery full cells prepared using the Ni IO@Cu also displayed excellent cycling performance. This work further demonstrates the significance of the 3D porous structure for preparing dendrite-free Li metal anodes.

Original languageEnglish
Article numbere202100257
JournalBatteries and Supercaps
Volume5
Issue number3
DOIs
Publication statusPublished - 2022 Mar

Keywords

  • Li growth
  • Li stabilization
  • Li-metal batteries
  • current collector
  • inverse opal

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering
  • Electrochemistry

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