NUS Enterprise

Ultra-Stable Hydrogen Evolution Catalyst 

Market Opportunity

Hydrogen generation for energy as an ideal, clean and highly efficient secondary energy resource.  Current state-of-the-art uses traditional Pt catalysts for hydrogen generation, which the evolution process is expensive, scarce and unstable. This calls for a new catalyst material that is stable, inexpensive and easily available.
 

Technology

We introduce a new hydrogen evolution catalyst based on transition metal dichalcogenides (TMDCs). This ultra-stable catalyst, specifically, molybdenum disulfide (MoS2), incorporating ~10 wt% platinum loading, is able to generate stable hydrogen evolution activity for 120,000s ~ 33.3 hours at a current density up to 50 mA/cm2. The performance of this TMDC-Pt catalyst was benchmarked against traditional 40 wt% Pt/C catalyst, which shows increasing losses (increasing over potential), as illustrated in Fig. 1.

Fig. 2: 25 cm2 membrane‐electrode assemblies using zero valent metal MoS2 catalysts: (a) coating onto carbon paper, (b) coating onto carbon cloth, (c) combined with Nafion® membrane and commercial 40% Pt/C gas diffusion electrode, all at a loading of 1 mg/cm2.
 

Stage of Development

TRL 3, Catalyst material for testing, benchmarking, scalability testing.
 

Applications

1. Fuel cell: Hydrogen fuel is a zero emission fuel which burns on reaction with oxygen. It is an interesting concept which aims to power automobiles by use of hydrogen instead of petroleum fuels.
2. Hydrogen is used in ammonia production, a crucial ingredient in fertilizer.
3. Another use of hydrogen is to remove sulfur from fuel in oil refining.
 

Advantages

Hydrogen generation from water splitting is an environmentally friendly alternative as compared to steam reforming from hydrocarbons. The technology offers a hydrogen generation catalyst from water splitting with an enhanced stability and 4X lower Pt loading. This translates to a longer lasting catalytic performance and lower costs as compared to the benchmark Pt/C catalyst.  
 

Status

Patent pending. Available for licensing. 
 

Get in Touch

Contact:
Tan Yan Ny
Phone: + 65 6601 2812
E-mail: tan.yan.ny@nus.edu.sg
ILO Ref No: 16036N

Inventor:
Professor Loh Kian Ping
Website: http://carbonlab.science.nus.edu.sg/