Abstract
Silicon is used as original material for solar cells and semiconductors. The material naturally exists in
the surface of the earth, such as a desert or coast. We proposed an energy cycle using solar-pumped
pulse lasers and base metals. Metals are used as an effective energy storage materials. Chemical energy
is stored in metals when metal oxides are reduced. In this study, we succeeded in generating electricity
for a long time by (metal) air cell using sintered metallurgical-grade Si nanopaste. Si oxide particles
were reduced to Si nanoparticles by using high-repetitive laser pulses. The laser pulses should be
converted from solar light using solar-pumped laser. Si pastes with the reduced Si nanoparticles were
sintered by hot plate or laser. Nanostructure of sintered Si nanopaste (nano-polisycllicstalyne body) was
analyzed by SEM, EDX, and XRD. Property for generating electricity using the air cells when
connecting LED illuminator or motor were investigated.
