Publications de Wenhao Ren | EPFL Graph Search

Encapsulated Co–Ni alloy boosts high-temperature CO2 electroreduction

Xile Hu, Jeremy Luterbacher, Seongmin Jin, Wenhao Ren

Electrochemical CO 2 reduction into chemicals and fuels holds great promise for renewable energy storage and carbon recycling 1–3 . Although high-temperature CO 2 electroreduction in solid oxide electrolysis cells is industrially relevant, current catalyst ...

Springer Science and Business Media LLC2025

Field-enhanced CO electroreduction in membrane electrolyzers at a dehydrated interface

Xile Hu, Miyeon Chang, Nanjun Chen, Wenhao Ren

Zero-gap membrane electrode assembly (MEA) CO electrolyzer stands as a promising technology for circular carbon economy. However, current CO electrolyzers are energetically inefficient when operating at ampere-level current densities. Here, by analyzing th ...

2024

Tailored water and hydroxide transport at a quasi-two-phase interface of membrane electrode assembly electrolyzer for CO electroreduction

Xile Hu, Wenhao Ren

Electrochemical CO reduction can potentially serve as an intermediate step for the efficient conversion of CO2 to chemical fuels using renewable electricity. Although membrane electrode assembly (MEA) CO electrolyzers are industrially relevant, they curren ...

Cell Press2023

Modulating electric field distribution by alkali cations for CO2 electroreduction in strongly acidic medium

Xile Hu, Sophia Haussener, Weiyan Ni, Shuo Liu, Wenhao Ren

The reaction of carbon dioxide with hydroxide to form carbonate in near-neutral or alkaline medium severely limits the energy and carbon efficiency of CO2 electroreduction. Here we show that by suppression of the otherwise predominant hydrogen evolution us ...

2022

Proton Storage in Metallic H1.75MoO3 Nanobelts through the Grotthuss Mechanism

Wenhao Ren

The proton, as the cationic form of the lightest element-H, is regarded as most ideal charge carrier in "rocking chair " batteries. However, current research on proton batteries is still at its infancy, and they usually deliver low capacity and suffer from ...

AMER CHEMICAL SOC2022

Electronic Regulation of Nickel Single Atoms by Confined Nickel Nanoparticles for Energy-Efficient CO2 Electroreduction

Xile Hu, Andreas Schueler, Anna Krammer, Wenhao Ren

Modulating the electronic structure of atomically dispersed active sites is promising to boost catalytic activity but is challenging to achieve. Here we show a cooperative Ni single-atom-on-nanoparticle catalyst (NiSA/NP) prepared via direct solid-state py ...

Wiley-VCH Verlag GmbH2022

A Cation Concentration Gradient Approach to Tune the Selectivity and Activity of CO2 Electroreduction

Xile Hu, Wenhao Ren

The linear scaling relationship of the binding energies of different intermediates limits the catalyst performance in CO 2 electroreduction. Here we demonstrate a cation concentration gradient strategy to promote the activity and tune the selectivity of CO ...

Wiley-VCH Verlag GmbH2022