4.8 Article

New Approach to Fully Ordered fct-FePt Nanoparticles for Much Enhanced Electrocatalysis in Acid

Journal

NANO LETTERS
Volume 15, Issue 4, Pages 2468-2473

Publisher

AMER CHEMICAL SOC
DOI: 10.1021/acs.nanolett.5b00320

Keywords

face-centered tetragonal structure; nanoparticles; electrocatalysis; oxygen reduction; hydrogen evolution

Funding

  1. U.S. Army Research Laboratory
  2. U.S. Army Research Office under the Multi University Research Initiative (MURI) [W911NF-11-1-0353]
  3. U.S. Department of Energy (DOE), Office of Basic Energy Sciences [DE-AC02-98CH10886, DE-SC-00112704]

Ask authors/readers for more resources

Fully ordered face-centered tetragonal (fct) FePt nanoparticles (NPs) are synthesized by thermal annealing of the MgO-coated dumbbell-like FePt-Fe3O4 NPs followed by acid washing to remove MgO. These fct-FePt NPs show strong ferromagnetism with room temperature coercivity reaching 33 kOe. They serve as a robust electrocatalyst for the oxygen reduction reaction (ORR) in 0.1 M HClO4 and hydrogen evolution reaction (HER) in 0.5 M H2SO4 with much enhanced activity (the most active fct-structured alloy NP catalyst ever reported) and stability (no obvious Fe loss and NP degradation after 20 000 cycles between 0.6 and 1.0 V (vs RHE)). Our work demonstrates a reliable approach to FePt NPs with much improved fct-ordering and catalytic efficiency for ORR and HER.

Authors

I am an author on this paper
Click your name to claim this paper and add it to your profile.

Reviews

Primary Rating

4.8
Not enough ratings

Secondary Ratings

Novelty
-
Significance
-
Scientific rigor
-
Rate this paper

Recommended

No Data Available
No Data Available