Scientists find way to boost batteries used in mobile phones, electric cars and other modern equipment thanks to ‘wonder material’. According to research, the capacity of lithium-ion batteries can be nearly doubled by adding graphene (an extraordinary form of carbon) – which offers the potential of longer-lasting power or slimmer designs for consumers. The experts, led by scientists from Samsung, found the capacity of their batteries was 1.8 times higher and 1.5 times higher at the first and 200th charge compared to commercially-available…