Technology and R&D

A U.S. research group has developed a metal-carbon-nanotube composite – MetZilla – which can be embedded in commercial, screen-printable silver pastes and is said to reduce the formation of hotspots in solar modules and to prolong panel lifespan. The composite metal contacts are also ‘self-healing’ as they are able to regain electrical continuity after cycles of complete electrical failure caused by extreme strain.

The California-based Hanergy subsidiary has broken its efficiency record for a large area, flexible CIGS module, achieving 18.64% on a device with a 1.08m² aperture. The record has been confirmed by Germany’s Fraunhofer Institute for Solar Energy Systems.

Scientists at Rice University in the United States have found by strategically adding indium to an all-inorganic, lead-based perovskite, they can reduce the number of defects in the material and improve its efficiency, as well as providing a significant boost to stability.

Spanish researchers have discovered a material said to offer radiative cooling and self-cleaning of devices which undergo critical heating during operation, such as PV panels. The thermal emitter enabled the scientists to lower the daytime temperature of silicon wafers by 14 degrees Celsius.

Amid high hopes for the European Commission presidency that is about to start, attendees at a recent event in Berlin tempered optimism by renewing calls for an industrial policy for the bloc.

A new application for ABB’s ‘Ability’ digital platform enables industrial customers to avoid peak charges without using of battery storage. The Swiss corporation has developed two apps for its energy management software with the help of an artificial intelligence specialist.

Scientists at the United States’ Argonne National Laboratory worked with a class of electrolyte materials they say could greatly improve the performance of lithium-sulfur batteries. The group has devised a selection rule which it says will help researchers select the most suitable electrolyte materials for different battery systems.

Scientists at Princeton have found solar and wind energy offer the added environmental benefit of reducing water usage, by comparison with hydroelectric dams. Their findings, say the researchers, could have a positive impact on groundwater sustainability in drought-prone regions such as California, where they conducted a case study.

Scientists at the University of Maryland have developed an organic polymer electrode which they claim demonstrates stable function for a sodium-ion battery over 50,000 cycles and also offers encouraging performance in magnesium-ion and aluminum-ion storage devices.

The Smart Energy Hub can operate in electrolysis mode to store renewable energy as hydrogen, or in fuel cell mode to produce electricity and heat from previously produced hydrogen or methane. Its developers are the French Alternative Energies and Atomic Energy Commission and start-up Sylfen.