The company believes that its ElectroPhen is the only bulk, commercially available electrically conductive polymer that can be cured at room temperature and moulded easily. Electrically conducting pathways are produced in-situ during the production process, and the conductivity can be further enhanced by adding conductive fillers to produce polymer composites.
The material might well prove to be a key enabler to the uptake and success of fuel cells. In April this year, the company demonstrated that it comfortably exceeded the US Department of Energy conductivity target of 200 Siemens per centimetre, which it set for materials used to make bipolar plates for use in automotive fuel cell applications.
Bipolar plates and end plates typically make up to 70 per cent of the weight and 30 per cent of the cost of a typical Polymer Electrolyte Membrane fuel cell stack. Bac2 believes that making them from ElectroPhen will deliver substantial cost savings without compromising performance.
The £2m investment is testament to the success of the business after the company had already raised £500,000 seed investment in May 2006 and an earlier £250,000 grant from the UK Department of Trade and Industry (DTI).
The latest funding round was led by London Seed Capital and London Business Angels, and is the largest ever Business Angel investment in the 25 year history of the London network.
Bac2 plans to announce its first standard product shortly.