ReS2: A high-rate pseudocapacitive energy storage material

Kalyan Ghosh, Siowwoon Ng, Christian Iffelsberger, Martin Pumera

Research output: Contribution to journalArticlepeer-review

Abstract

Transition-metal dichalcogenides have attracted exceptional attention in the field of energy storage such as lithium-ion batteries and supercapacitors because of their unique electronic, optical, and mechanical properties. In this work, we synthesized rhenium disulfide (ReS2) on high-throughput, electronics industry-standard, screen-printed electrodes (SPEs) to use as an electrode material for supercapacitor application. The ReS2 nanoparticles were grown by a room-temperature, aqueoussolution- based electrochemical deposition method, which is capable of parallel modification of SPEs. The topographic detail and electrochemical activity of the sample surface were characterized by a spatial electroanalytical mapping technique known as scanning electrochemical microscopy. The charge storage kinetics are appraised with deep insight following diffusion-controlled and capacitive-like mechanisms. The ReS2-coated SPE displayed a promising specific capacitance of 156 mF cm-2 at a current density of 1.6 mA cm-2, which shows that ReS2 can be used as a potential pseudocapacitive material in supercapacitors.

Original languageEnglish
Pages (from-to)10261-10269
Number of pages9
JournalACS Applied Energy Materials
Volume3
Issue number10
DOIs
Publication statusPublished - 2020 Oct 26

Bibliographical note

Funding Information:
M.P. acknowledges the financial support by the Grant Agency of the Czech Republic (GACR EXPRO: 19-26896X), and K.G. thanks the CEITEC Nano Research Infrastructure supported by MEYS CR (LM2018110) for providing spectroscopic and microscopic characterization facilities.

All Science Journal Classification (ASJC) codes

  • Chemical Engineering (miscellaneous)
  • Energy Engineering and Power Technology
  • Electrochemistry
  • Materials Chemistry
  • Electrical and Electronic Engineering

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