OSAKA -- China is increasing its presence in the race to develop replacements for the lithium-ion battery, a Nikkei analysis shows. A country-by-country tally of patents related to post-lithium-ion batteries over the past 10 years shows China in the lead, accounting for more than half of all patents.
The evaluation of patents for sodium-ion batteries, perhaps the biggest horse in the race, also shows China dominating Japan and the U.S., with Chinese companies expected to begin mass production of these batteries this year.
