BEIJING, July 4 (Xinhua) — The following is a summary of published science and technology news of China.
SPACEWALK
The Shenzhou-18 taikonauts on board China’s orbiting space station completed their second spacewalk at 10:51 p.m. (Beijing Time) on Wednesday.
They installed space debris protection devices for the pipelines, cables and key equipment outside the Tiangong space station, and conducted an extravehicular inspection.
ICEBREAKERS
Two made-in-China polar icebreakers, Xuelong 2 and Jidi, opened for public viewing on Wednesday in Qingdao, a port city in east China’s Shandong Province.
Equipped with a wide range of marine survey equipment, Jidi is designed to perform comprehensive observation tasks, including analyzing sea ice, conducting 3D water body studies, carrying out geophysical surveys and atmosphere monitoring.
BATTERIES
Chinese researchers have recently developed a cost-effective sulfide solid electrolyte with low density and excellent anode compatibility.
Researchers from the University of Science and Technology of China have developed a Li7P3S7.5O3.5 solid electrolyte. The synthesis of this material does not need the expensive Li2S, so the cost of raw materials is only 14.42 U.S. dollars per kilogram, which lies below the 50 U.S. dollars per kilogram threshold.