新唐

我国高能量密度一次电池功率获突破_我的网站

A |       记者10日从中国科学院大连化学物理研究所获悉，该所能源催化转化全国重点实验室陈忠伟团队成功研制出25安时级软包金属锂一次电池。

B |     

    Ground-based infrared telescope installed at Saishiteng Mountain, Lenghu township, Northwest China's Qinghai Province Photo: Screenshot from gdstc.gd.gov.cn
Chinese scientists on Wednesday released the first complete set of observational images captured by China's new-generation ground-based infrared telescope, filling a gap in the country's near-infrared astronomical observation capabilities and reducing reliance on foreign infrared detector technology, China News Service reported on Wednesday. 
The 80-centimeter near-infrared telescope was installed at Saishiteng Mountain, Lenghu township, Northwest China's Qinghai Province in October 2024. Jointly developed by Sun Yat-sen University and several partner institutions, the telescope is China's first to achieve scientific imaging in the 1.2-micrometer J band and 2.2-micrometer K band using domestically developed scientific-grade InGaAs and HgCdTe detectors. 
The telescope enables unattended remote operations, and can lock onto any target in the sky within 15 seconds. Its infrared capability allows it to see through interstellar dust, enabling it to observe cold and distant celestial objects that are difficult for optical telescopes to capture. 
According to Ma Bin, a professor at the School of Physics and Astronomy, Sun Yat-sen University who led the research team that released the infrared telescope's observational images, all three of the telescope's core astronomical observation capabilities were fully validated during operation. 
It rapidly responded to and tracked multiple gamma-ray bursts and supernova events, recording the evolution of their infrared afterglows following the explosions. It continuously monitored brown dwarfs, precisely capturing periodic variations in their atmospheric brightness. Using image-stacking technology, it also observed active galaxies billions of light-years away. 
Since its deployment in Lenghu, the system has supported infrared observations for more than 10 Chinese research institutions, accumulating valuable experience for the construction of future large-scale infrared telescopes. 
Lenghu township, where the world-class astronomical observation base takes shape, is hailed as "the most Mars-like place on the Earth." The astronomical observation base was said to be an astronomical observation site comparable to the top ones in the world by a Nature article published on August 18, 2021, according to the Chinese Academy of Sciences. 
Once prospered in 1950s due to its rich petroleum resources, Lenghu is now becoming a premier astronomical observation site and Mars-themed tourist destination, according to Xinhua News Agency.
Global Times
。

C | 经中国电子技术标准化研究院安全实验室检测，该电池低倍率下能量密度超过750Wh/kg和1285Wh/L，属于一次电池中的高能量密度区间，放电倍率可提高百倍，这一成果标志着我国在高功率一次电池领域迈入国际前列，为高端装备装上自主“电力心脏”。  无人机突遇乱流需急刹悬停、机器人在崎岖地形要瞬间发力越障、航天器姿态调整要求数秒大电流冲击、野外地震仪在无人区长年待命却必须“唤醒即用”——这些场景对电池的共同要求，是“耐力”之外更要有“爆发力”。

D | 传统锂一次电池虽能贮存多年电力，却在关键时刻“使不上劲”。

E |   据介绍，25安时级软包金属锂一次电池技术将放电倍率提高100倍（即1C倍率下放电），该电池的能量密度可达到656Wh/kg和1130Wh/L。更关键的是，在这一能量段内，其倍率性能达到国际领先水平——可实现10C短时大电流放电，常温比功率达4487W/kg，且具备4C持续放电能力，零下40摄氏度极寒下1C能量密度保持447Wh/kg，年自放电低于1%，真正实现了高能量密度下的高功率输出。  能源催化转化全国重点实验室主任、研究员陈忠伟表示，团队从正极材料源头突破，设计高熵氧化物，比容量超430mAh/g（毫安时每克），并建成年产10吨级中试线，打通从材料到电芯全链条。该电池已通过第三方检测认证，正在无人机、机器人、航天模拟器及野外传感节点上加速验证，将为特种装备打造“即用即强”动力源。

F | （记者张蕴）。

Current article:http://4ura6d.ruwentaqintiaozhupapaigai.shop/list_a73g/5vlde.html

Published on:14:14:29