Diamond batteries promise to power space probes for 100 years

Japan-produced prototype also holds potential to electrify underground mines

20210221 Diamond battery img

As the hardest substance in the world, diamond is widely used as industrial tools and can even be transformed into semiconductors. © Nikkei montage

MASATO TAKEUCHI, Nikkei staff writer

TOKYO -- Diamond batteries capable of generating electricity for 100 years are being considered for use in space probes and in equipment for underground mining.

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