Nitrogen-doped graphene encapsulated FeCoMoS nanoparticles as advanced trifunctional catalyst for water splitting devices and zinc–air batteries

Shanmugam Ramakrishnan, Jayaraman Balamurugan, Mohanraj Vinothkannan, Ae Rhan Kim, Sivaprakash Sengodan, Dong Jin Yoo

Research output: Contribution to journalArticlepeer-review

168 Scopus citations

Abstract

Emerging demands for the highly active, durable, and cost-effective trifunctional catalysts for overall water splitting and metal–air batteries in the scientific community. Herein, a novel strategy is demonstrated for the rational design of hierarchical iron cobalt molybdenum sulfide nanoflower encapsulated in nitrogen doped graphene (FeCoMoS@NG) through a facile, cost-effective, and single-step in-situ hydrothermal process. Owing to its hierarchical nanostructures, larger specific surface area, and exclusive porous networks, the optimal FeCoMoS@NG shows excellent catalytic activities for OER ƞ10 = 238 mV, HER ƞ10 = 137 mV, and ORR (0.83 V vs RHE). Most significantly, FeCoMoS@NG||FeCoMoS@NG water splitting device achieves a cell voltage of 1.58 V at 10 mA cm−2. Furthermore, FeCoMoS@NG based zinc–air battery endows a high power density of 118 mW cm−2, and overall water splitting was successfully driven by FeCoMoS@NG based zinc–air battery. This work provides new pathway for designing highly active and durable multifunctional catalysts for energy conversion and storage applications.

Original languageBritish English
Article number119381
JournalApplied Catalysis B: Environmental
Volume279
DOIs
StatePublished - 15 Dec 2020

Keywords

  • Overall water splitting
  • Oxygen reduction reaction
  • Transition metal chalcogenides
  • Trifunctional catalyst
  • Zinc–air batteries

Fingerprint

Dive into the research topics of 'Nitrogen-doped graphene encapsulated FeCoMoS nanoparticles as advanced trifunctional catalyst for water splitting devices and zinc–air batteries'. Together they form a unique fingerprint.

Cite this