Low-Temperature, Universal Synthetic Route for Mesoporous Metal Oxides by Exploiting Synergistic Effect of Thermal Activation and Plasma

Keon Woo Kim, Hyunho Seok, Sihoon Son, Su Jeong Park, Chanwoo Yang, Dongho Lee, Hyo Chang Lee, Jihun Mun, Hee Jung Yeom, Min Young Yoon, Bomi Park, Se Hyun Kim, Changshin Jo, Hong Chul Moon, Taesung Kim, Jin Kon Kim

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

Abstract

Mesoporous metal oxides exhibit excellent physicochemical properties and are widely used in various fields, including energy storage/conversion, catalysis, and sensors. Although several soft-template approaches are reported, high-temperature calcination for both metal oxide formation and template removal is necessary, which limits direct synthesis on a plastic substrate for flexible devices. Here, a universal synthetic approach that combines thermal activation and oxygen plasma to synthesize diverse mesoporous metal oxides (V2O5, V6O13, TiO2, Nb2O5, WO3, and MoO3) at low temperatures (150–200 °C), which can be applicable to a flexible polymeric substrate is introduced. As a demonstration, a flexible micro-supercapacitor is fabricated by directly synthesizing mesoporous V2O5 on an indium-tin oxide-coated colorless polyimide film. The energy storage performance is well maintained under severe bending conditions.

Original languageEnglish
Article number2311809
JournalAdvanced Materials
Volume36
Issue number18
DOIs
StatePublished - 2 May 2024

Keywords

  • block copolymer
  • flexible energy storage devices
  • low-temperature processes
  • mesoporous materials
  • metal oxides
  • plasma

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