World

German scientists have applied a new combination of cathodes and electrolytes to improve the stability of lithium-metal batteries. They fabricated a device with an energy density of 560 watt-hours per kilogram and a Coulombic efficiency of 99.94%.

The company’s revenue from EPC and operations and maintenance business stood at INR 1,195 crore, a 12% growth over the same period in the previous fiscal year. The gross margins remained suppressed owing to an increase in module and commodity prices.

Supersola has developed a 315 W, half-cut monocrystalline PV module. It costs €699 and can be coupled with other two panels to form a 1 kW residential PV system.

Japanese scientists have developed a new lithium-sulfur battery by using titanium oxide and titanium nitride to prevent the formation of polysulfides during the fabrication process. This allows the battery to retain 85% of its capacity after 500 cycles at 2 C.

Scientists in Italy have created a hybrid thermoelectric photovoltaic (HTEPV) system based on a thermoelectric generator and a wide-gap perovskite solar cell. The device is able to recover waste heat from the PV unit and produce additional power. According to its creators, this configuration needs large gap cells as these are less sensitive to temperature in terms of efficiency.

Researchers from the TNO in the Netherlands have proposed two novel east-west PV plant designs that are claimed to increase soil quality underneath the solar panels. Both approaches are said to provide a 77% ground coverage ratio, which compares to a 90% ratio in conventional east-west oriented projects.

The two agreed to advance safe deployment and use of second-life battery energy storage systems.

The battery operates at 230 degrees Fahrenheit, opening what researchers said could be “a whole cascading cost savings” including everything from less expensive materials to less insulation.

Mónica LiraCantú leads a research group investigating nanostructured materials for photovoltaic energy at the Catalan Institute of Nanoscience and Nanotechnology (ICN2). Recently, her group led a project that looked deep into the crystalline structure of a perovskite solar cell, revealing new information about the formation of defects in the material and how they could be engineered to improve both efficiency and stability. pv magazine caught up with the Barcelona-based scientist to discuss the state of the art in perovskite solar cells and remaining challenges on the road to commercialization.

German researchers developed a lattice arrangement of three different layers of ferroelectric crystals that created a powerful photovoltaic effect.