Publications by Andreas Züttel

Deep Eutectic Solvents Formed by Complex Hydrides: A New Class of Hydrogen‐Rich Liquid

Thi Ha My Pham, Loris Giovanni Lombardo, Andreas Züttel

Deep eutectic solvents (DESs) are novel mixtures that exhibit a significant depression in melting points compared to their individual components. This work finds that combining tetrabutylammonium borohydride (TBABH) with ammonia borane (AB) yields new, sta ...

Wiley2025

Surface chemistry of supported Ru nanoparticles investigated during CO2 hydrogenation by NAP-XPS

Mounir Driss Mensi, Andreas Züttel

In situ investigation of the surface composition of catalyst particles improves the understanding of the active species in heterogeneous catalysis. This study analyzed the surface chemistry of ruthenium nanoparticles supported on alumina during CO2 methana ...

2025

Selective light olefin synthesis with high ethylene abundance via CO2 hydrogenation over (Ga-In)2O3/SSZ-13 catalysts

Mounir Driss Mensi, Andreas Züttel, Laura Piveteau

Direct light olefin synthesis from CO2 hydrogenation is a new pathway to decarbonize the chemical industry. Inspired by the promising catalytic activity of Ga2O3-based catalysts in alkane dehydrogenation, this study reveals that optimizing Ga content in th ...

2025

Study on mechanisms of two-step hydrogen sorption in a MgH2–TiCrMnFeZr high-entropy alloy composite

Andreas Züttel

Benefiting from the effective catalytic effect of the TiCrMnFeZr HEA and the protective effect of MgH2, the MgH2-40 wt% TiCrMnFeZr composite exhibits superior hydrogen sorption in two steps. ...

Royal Society of Chemistry2025

Functionalized Phenyl Methanaminium Salts Provide Highly Stable Perovskite Solar Cells

Mohammad Khaja Nazeeruddin, Paul Joseph Dyson, Andreas Züttel, Liping Zhong

One of the leading approaches to enhancing the performance and stability of perovskite solar cells (PSCs) involves passivating the perovskite surface and grain boundaries with large ammonium salts. Here, we report the synthesis of furan-, thiophene-, and s ...

2025

Engineering Ru Nanoparticle Size and Metal-support Interactions for Enhanced Catalytic Hydrogen Combustion

Thi Ha My Pham, Loris Giovanni Lombardo, Andreas Züttel

Catalytic hydrogen combustion (CHC) plays a crucial role in enhancing the safety and efficiency of fuel cells and electrolysers, thereby promoting the H2 economy. To increase the catalytic activity of supported metal particles for CHC, the active surface a ...

Royal Society of Chemistry2025

Selective electroreduction of CO2 to C2+ products on cobalt decorated copper catalysts

Andreas Züttel, Kun Zhao, Jie Zhang

Cu-catalyzed electrochemical CO2 reduction reaction (CO2RR) to multi-carbon (C2+) products is often plagued by low selectivity because the adsorption energies of different reaction intermediates are in a linear scaling relationship. Development of Cu-based ...

2024

Graphene membranes with pyridinic nitrogen at pore edges for high-performance CO2 capture

Andreas Züttel, Kumar Varoon Agrawal, Shiqi Huang, Luis Francisco Villalobos Vazquez de la Parra, Heng-Yu Chi, Shaoxian Li, Kuang-Jung Hsu, Marina Micari, Xuekui Duan, Liping Zhong, Shuqing Song

Membranes based on a porous two-dimensional selective layer offer the potential to achieve exceptional performance to improve energy efficiency and reduce the cost for carbon capture. So far, separation from two-dimensional pores has exploited differences ...

Nature Portfolio2024

Development of Ti-Zr-Mn based AB 2 type metal hydrides alloys for an 865 bar two-stage hydrogen compressor

Andreas Züttel

This study reports the development of a new Ti-Zr-Mn-based AB 2 type hydrogen storage alloys for a two-stage metal hydride hydrogen compressor (MHHC). The hydrogen storage alloys are designed to compress hydrogen from 35 to 865 bar within a temperature dif ...

Pergamon-Elsevier Science Ltd2024

Catalytic hydrogen combustion over supported metal catalysts; comparison and kinetic study

Mounir Driss Mensi, Emad Oveisi, Andreas Züttel, Cedric David Koolen

Catalytic H2 combustion (CHC) is an efficient way to mitigate H2 slip from industrial processes, overcoming the explosion and NOx emission risks. Although Pt-based catalysts are state-of-the-art catalysts, little is known about the CHC catalytic activity o ...

2024

Power plant units for CO2 neutral energy security in Switzerland

Andreas Züttel

A new concept based on Power Plant Units, able to deliver renewable energy on demand, for the transition from fossil fuels to renewable energy in Switzerland is presented. The technically realized efficiencies showed that complete electrification leads to ...

2024

All Platinum Group Metal-Free and Durable Catalysts for Direct Borohydride Fuel Cells

Thi Ha My Pham, Andreas Züttel, Youngdon Ko, Victor Carle Adrien Boureau, Liping Zhong

Platinum group metal-free catalysts (e.g., Fe-N-C and Co-N-C) are used as hydrogen peroxide reduction reaction (PRR) catalysts in direct borohydride fuel cells (DBFCs). Fe-N-C is more active in the PRR and demonstrates high performance at the beginning of ...

Amer Chemical Soc2024

Solvent- and catalyst-free reduction of CO2 with ammonia borane

Andreas Züttel, Youngdon Ko, Liping Zhong

Ammonia borane (AB) has been extensively studied as a solid-state hydrogen storage material. On the other hand, its reactivity with CO2 is still unclear, especially in the solid state. By carefully controlling the CO2 pressure and temperature, AB efficient ...

Royal Soc Chemistry2024

Continuous production prototype for scaling up of graphene oxide/carbon nanotube composite synthesis towards efficient hydrogen storage

Andreas Züttel

A continuous production prototype for scaling up the synthesis of a graphene oxide/multi-walled carbon nanotubes (GO/MWCNTs) composite as a hydrogen storage material has been proposed in this study. This prototype consists of an automatic feeding and mixin ...

2024

Conductive or semi-conductive clusters produced via spark ablation

Andreas Züttel, Cedric David Koolen

A conductive or semi-conductive cluster essentially comprises or consists of a first-type material, wherein the first-type material comprises a number of surface atoms that is at least half of a number of total atoms of the first-type material, and wherein ...

2024

A Single-Atom Interface Engineering Strategy to Promote Hydrogen Sorption Performances of Magnesium Hydride

Andreas Züttel

Magnesium hydride (MgH2) is regarded as a promising hydrogen storage material owing to its high gravimetric and volumetric capacity and low cost. However, its large-scale application is hampered by high stability leading to elevated temperature and slow ki ...

WILEY-V C H VERLAG GMBH2024

Accelerated design of nickel-cobalt based catalysts for CO2 hydrogenation with human-in-the-loop active machine learning

Andreas Züttel

Thermo-catalytic conversion of CO2 into more valuable compounds, such as methane, is an attractive strategy for energy storage in chemical bonds and creating a carbon-based circular economy. However, designing heterogeneous catalysts remains a challenging, ...

2024

Understanding the role of surface oxygen-containing functional groups on carbon-supported cobalt catalysts for the oxygen evolution reaction

Thi Ha My Pham, Andreas Züttel, Youngdon Ko, Kangning Zhao, Liping Zhong, Manhui Wei

Supported Co-based catalysts exhibit promising catalytic activities in the oxygen evolution reaction (OER) during alkaline water electrolysis. Surface functionalization of the support modulates the dispersion of the catalysts and their interaction with the ...

Royal Society of Chemistry2023

The Effect of Y Content on Structural and Sorption Properties of A(2)B(7)-Type Phase in the La-Y-Ni-Al-Mn System

Loris Giovanni Lombardo, Andreas Züttel

Metal hydrides are an interesting group of chemical compounds, able to store hydrogen in a reversible, compact and safe manner. Among them, A(2)B(7)-type intermetallic alloys based on La-Mg-Ni have attracted particular attention due to their high electroch ...

MDPI2023

A fluoropolymer bifunctional solid membrane interface for improving the discharge duration in aqueous Al-air batteries

Thi Ha My Pham, Andreas Züttel, Liping Zhong, Meixia Zhang, Manhui Wei

Herein, a fluoropolymer bifunctional solid membrane interface (SMI) for an aqueous Al-air battery is proposed, which inhibits anodic self-corrosion, while concurrently reducing the accumulation of undesirable by-products. A battery using the SMI exhibits a ...

Royal Society of Chemistry2023