Global demand for lithium is climbing faster than new mines can open, raising fears that battery supply could bottleneck the clean‑energy transition. A new calcium‑ion battery reported in a ...

In order to make tofu, soy milk is introduced to brine of mineral salts which act as a coagulant to turn the milk into a solid.

Researchers at the Hong Kong University of Science and Technology have built a calcium-ion battery that retains roughly three-quarters of its capacity after 1,000 charge-discharge cycles, a result ...