Technology

Lead, sulphuric-acid, nickel, cobalt and rare earth metals are highly toxic and have adverse impacts on the environment and the societies in which they are mined. As the EU is looking to become a world leader in battery production, a report considers new battery technologies – such as sodium-ion – which would have less negative impacts.

The organic methylammonium (MA) molecules in the cell were replaced with inorganic elements such as rubidium and cesium. The planar perovskite cells resulting from the research have an efficiency of more than 20%.

Heterojunction and TOPcon cell technologies being explored by Hefei-based cell and module maker. The Chinese giant is also preparing to fly in the face of predictions the big players will curtail plans to expand production after this year’s policy developments in their homeland.

The bid submission deadline for the national 10 GW PV project plus manufacturing tender is now November 12. According to officials, there are amendments to be made to the tender requirements.

The inverter maker will buy 75% of Kokam’s shares for $88 million, with an intent to acquire the remainder shortly after, on the open market. Strategic company acquisitions and close partnerships are characterizing this year’s inverter market, as companies seek to diversify and integrate storage systems and other technologies.

Berkeley researchers have discovered a shade of blue – dating back to ancient Egypt – which has impressive qualities they say could reduce building energy consumption and boost solar energy output. Meanwhile, the US National Renewable Energy Laboratory has developed a perovskite cell material that could be applied to a substrate using a paintbrush.

Inorganic electrolytes will do the trick the company says. For multi-MW grid-scale applications the company says its technology can boost battery life to 50,000 cycles and is non-flammable. It adds that the costs of the product are competitive with conventional battery systems. Innolith is taking over the baton from Alevo, including chief executive and engineers. Alevo, however, went bankrupt last year, making the same promises.

TOPCon technologies could further increase solar cell efficiencies, said Guangyao Jin, chief scientist, DuPont Photovoltaic Solutions, at this year’s Energy Taiwan, held in September. He added that metallization paste is crucial.

Researchers from Berlin’s Helmholtz Zentrum Research Institute have developed a silicon heterojunction cell, with an additional crystalline layer that utilizes an effect known as singlet fission to boost efficiency. The team has created a device demonstrating that the principle works, and says that with further experimentation, the concept could achieve cell efficiencies as high as 40%.

Looking at a scenario, in which the Spanish residential solar market is booming again, energy consultancy, ecoSynergies finds that the energy system could save billions, both in terms of CO2, and fuel and grid costs. Additionally, introducing the EU’s suggestion to fairly compensate prosumers for their surplus energy, would allow households to slash payback times for their solar systems by more than a half. In some cases, the amortization period could go down from 25 to seven years.