Publications de Nanjun Chen | EPFL Graph Search

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

Fluorinated polyaromatics with linear, branched or crosslinked structure for anion exchange membranes and ionomers

Xile Hu, Xingyu Wu, Nanjun Chen

The present specification relates to a fluorinated polyaromatic polymer comprising • at least one fluorinated unit FU of formula (I) and • at least one cationic unit CU of formula B or C. ...

2024

An oxide-promoted, self-supported Ni4Mo catalyst for high current density anion exchange membrane water electrolysis

Xile Hu, Ariana Serban, Nanjun Chen

Anionic exchange membrane (AEM) water electrolyzers are emerging as a cost-effective technology for green hydrogen production. However, state-of-the-art AEM electrolyzers rely on platinum group metal (PGM) catalysts for the hydrogen evolution reaction (HER ...

ROYAL SOC CHEMISTRY2024

Fluorinated Poly(aryl piperidinium) Membranes for Anion Exchange Membrane Fuel Cells

Harm-Anton Klok, Xile Hu, Xingyu Wu, Nanjun Chen

Anion-exchange-membrane fuel cells (AEMFCs) are a cost-effective alternative to proton-exchange-membrane fuel cells (PEMFCs). The development of high-performance and durable AEMFCs requires highly conductive and robust anion-exchange membranes (AEMs). Howe ...

Wiley-V C H Verlag Gmbh2023

Anion Exchange Ionomers Enable Sustained Pure-Water Electrolysis Using Platinum-Group-Metal-Free Electrocatalysts

Xile Hu, Ariana Serban, Fang Song, Nanjun Chen, Yiwei Zheng

Anion exchange membrane water electrolyzer (AEMWE) is a rising technology that offers potential advantages in cost and scalability over proton exchange membrane water electrolyzer (PEMWE) technology. However, AEMWEs that stably operate in pure water still ...

2023

Robust Piperidinium-Enriched Polystyrene Ionomers for Anion Exchange Membrane Fuel Cells and Water Electrolyzers

Xile Hu, Fang Song, Nanjun Chen

Durable and efficient anion exchange polyelectrolytes (AEPs) are crucial for the long-term operation of cost-effective anion exchange membrane fuel cells (AEMFCs) and water electrolyzers (AEMWEs). Here, we present a new class of ?-amine-piperidinium-functi ...

AMER CHEMICAL SOC2023