• HOME
  • NEWS
  • EXPLORE
    • CAREER
      • Companies
      • Jobs
    • EVENTS
    • iGEM
      • News
      • Team
    • PHOTOS
    • VIDEO
    • WIKI
  • BLOG
  • COMMUNITY
    • FACEBOOK
    • INSTAGRAM
    • TWITTER
Monday, August 25, 2025
BIOENGINEER.ORG
No Result
View All Result
  • Login
  • HOME
  • NEWS
  • EXPLORE
    • CAREER
      • Companies
      • Jobs
        • Lecturer
        • PhD Studentship
        • Postdoc
        • Research Assistant
    • EVENTS
    • iGEM
      • News
      • Team
    • PHOTOS
    • VIDEO
    • WIKI
  • BLOG
  • COMMUNITY
    • FACEBOOK
    • INSTAGRAM
    • TWITTER
  • HOME
  • NEWS
  • EXPLORE
    • CAREER
      • Companies
      • Jobs
        • Lecturer
        • PhD Studentship
        • Postdoc
        • Research Assistant
    • EVENTS
    • iGEM
      • News
      • Team
    • PHOTOS
    • VIDEO
    • WIKI
  • BLOG
  • COMMUNITY
    • FACEBOOK
    • INSTAGRAM
    • TWITTER
No Result
View All Result
Bioengineer.org
No Result
View All Result
Home NEWS Science News

The secret of catalysts that increase fuel cell efficiency

Bioengineer by Bioengineer
March 10, 2021
in Science News
Reading Time: 3 mins read
0
Share on FacebookShare on TwitterShare on LinkedinShare on RedditShare on Telegram

IMAGE

Credit: POSTECH

Fuel cells, which are attracting attention as an eco-friendly energy source, obtain electricity and heat simultaneously through the reverse reaction of water electrolysis. Therefore, the catalyst that enhances the reaction efficiency is directly connected to the performance of the fuel cell. To this, a POSTECH-UNIST joint research team has taken a step closer to developing high-performance catalysts by uncovering the ex-solution and phase transition phenomena at the atomic level for the first time.

A joint research team of Professor Jeong Woo Han and Ph.D. candidate Kyeounghak Kim of POSTECH’s Department of Chemical Engineering, and Professor Guntae Kim of UNIST have uncovered the mechanism by which PBMO – a catalyst used in fuel cells – is transformed from perovskite structure to layered structure with nanoparticles ex-solution1 to the surface, confirming its potential as an electrode and a chemical catalyst. These research findings were recently published as an outside back cover paper of the Energy & Environmental Science, an international journal in the field of energy.

Catalysts are substances that enhance chemical reactions. PBMO (Pr0.5Ba0.5MnO3-δ), one of the catalysts for fuel cells, is known as a material that stably operates even when directly used as a hydrocarbon, not hydrogen. In particular, it exhibits high ionic conductivity as it changes to a layered structure under a reduction environment that loses oxygen. At the same time, the ex-solution phenomenon occurs in which the elements inside the metal oxide segregate to the surface.

This phenomenon occurs voluntarily under a reduction environment without any particular process. As the elements inside the material rise to the surface, the stability and performance of the fuel cell improve immensely. However, it was difficult to design the materials because the process through which these high-performance catalysts were formed was unknown.

Focusing on these features, the research team confirmed that the process goes through a progression of phase transition, particle ex-solution, and catalyst formation. This was proved using the first-principles calculation based on quantum mechanics and the in-situ XRD2 experiment that allows the observation of real-time crystal structural changes in materials. The researchers also confirmed that the oxidation catalyst developed this way displays up to four times better performance than the conventional catalysts, verifying that this study is applicable to various chemical catalysts.

“We were able to accurately understand the materials in atomic units that were difficult to confirm in previous experiments, and successfully demonstrated it thus overcoming the limitations of existing research by accurately understanding materials in atomic units, which were difficult to confirm in existing experiments, and successfully demonstrating them,” explained Professor Jeong Woo Han who led the study. “Since these support materials and nanocatalysts can be used for exhaust gas reduction, sensors, fuel cells, chemical catalysts, etc., active research in numerous fields is anticipated in the future.”

###

This research was conducted with the support from the Samsung Research Funding & Incubation Center and the Korea Institute of Energy Technology Evaluation and Planning.

Media Contact
Jinyoung Huh
[email protected]

Original Source

http://postech.ac.kr/eng/the-secret-of-catalysts-that-increase-fuel-cell-efficiency/

Related Journal Article

http://dx.doi.org/10.1039/D0EE02875D

Tags: BiochemistryBiomechanics/BiophysicsChemistry/Physics/Materials SciencesElectrical Engineering/ElectronicsElectromagneticsEnergy/Fuel (non-petroleum)Molecular PhysicsNanotechnology/MicromachinesPolymer ChemistryResearch/Development
Share13Tweet8Share2ShareShareShare2

Related Posts

MALAT1 Knockdown Reduces High Glucose Neuronal Apoptosis

MALAT1 Knockdown Reduces High Glucose Neuronal Apoptosis

August 25, 2025
Evaluating My Dose Coachâ„¢ for Insulin Management in Diabetes

Evaluating My Dose Coach™ for Insulin Management in Diabetes

August 25, 2025

HIV-Linked Cervicovaginal Microbiome Changes in Peruvian Women

August 25, 2025

Urtica dioica Boosts Cisplatin-Induced Apoptosis in Ovarian Cancer

August 25, 2025
Please login to join discussion

POPULAR NEWS

  • blank

    Molecules in Focus: Capturing the Timeless Dance of Particles

    142 shares
    Share 57 Tweet 36
  • Breakthrough in Computer Hardware Advances Solves Complex Optimization Challenges

    139 shares
    Share 56 Tweet 35
  • New Drug Formulation Transforms Intravenous Treatments into Rapid Injections

    115 shares
    Share 46 Tweet 29
  • Neuropsychiatric Risks Linked to COVID-19 Revealed

    81 shares
    Share 32 Tweet 20

About

We bring you the latest biotechnology news from best research centers and universities around the world. Check our website.

Follow us

Recent News

MALAT1 Knockdown Reduces High Glucose Neuronal Apoptosis

Evaluating My Dose Coach™ for Insulin Management in Diabetes

HIV-Linked Cervicovaginal Microbiome Changes in Peruvian Women

  • Contact Us

Bioengineer.org © Copyright 2023 All Rights Reserved.

Welcome Back!

Login to your account below

Forgotten Password?

Retrieve your password

Please enter your username or email address to reset your password.

Log In
No Result
View All Result
  • Homepages
    • Home Page 1
    • Home Page 2
  • News
  • National
  • Business
  • Health
  • Lifestyle
  • Science

Bioengineer.org © Copyright 2023 All Rights Reserved.