High-performance aqueous calcium-ion battery

High-performance aqueous calcium-ion battery

Researchers from Rensselaer Polytechnic Institute in the United States have developed a special class of materials for bulky calcium ions, providing pathways for their facile insertion into battery electrodes.   Image: RPI Against a backdrop of soaring prices and...
New photovoltaic tiles from Estonia

New photovoltaic tiles from Estonia

Estonian startup Solarstone has developed two solar tiles with an efficiency of up to 19.5% and an operating temperature coefficient of -0.41% per C. It recently secured €10 million in funds to expand sales across Europe. Image: Solarstone Estonian startup Solarstone...