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优酷否认被今天的头条新闻所收买：一无所有_我的网站

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    Different types of consumer lithium primary batteries on display Photo: VCGChinese researchers have developed a new high-energy lithium primary battery that can deliver both long-lasting energy and strong bursts of power while maintaining stable performance at temperatures as low as -40 C, Science and Technology Daily reported on Monday.
A research team led by Chen Zhongwei at the Dalian Institute of Chemical Physics under the Chinese Academy of Sciences developed a 25-ampere-hour pouch-type lithium-metal primary battery. Tests conducted by the safety laboratory of the China Electronics Standardization Institute showed that the battery achieved an energy density of more than 750 Watt-hour per kilogram at a low discharge rate, according to the report.
Meanwhile its discharge rate can be increased by up to 100 times, enabling short bursts of high-current discharge at 10C. The "C" stands for C-rate, which is the charge and discharge rates of a battery. According to sector website Battery University, the capacity of a battery is commonly rated at 1C, meaning that a fully charged battery rated at 1Ah should provide 1A for one hour. The same battery discharging at 0.5C should provide 500mA for two hours, and at 2C it delivers 2A for 30 minutes. 
The new battery puts China among the world's leading players in high-power primary battery technology.
Primary batteries offer high specific energy, long storage times and instant readiness, allowing them to be used immediately even after long storage. 
Primaries play an important role, especially when charging is impractical or impossible, such as in military combat, rescue missions and forest-fire services, the article said. 
Traditional lithium primary batteries can store large amounts of energy for long periods, but their ability to rapidly release that energy can be limited. The new battery is designed to combine high energy density with high power output, allowing it to both operate for extended periods and provide large amounts of power when needed.
The battery can deliver short bursts of high-current discharge at up to 10C and sustain discharge at 4C. At room temperature, its specific power reaches 4,487 Watts per kilogram, according to Science and Technology Daily.
The battery also maintains strong performance under extremely cold conditions. At -40 C, the battery retains an energy density of 447 Watt-hour per kilogram at a 1C discharge rate. Its annual self-discharge rate is below 1 percent, meaning that it loses relatively little stored energy during long periods of standby.
Such characteristics could make the battery suitable for equipment that needs both long-term energy storage and sudden high-power output, including drones, robots, spacecraft and sensors deployed in remote areas.
Chen said the team achieved a breakthrough in cathode materials by developing a high-entropy oxide material and has established a pilot production line with an annual capacity of 10 tons, linking material development with battery-cell production.
The battery has passed third-party testing and is now undergoing further validation for applications including drones, robots, spaceflight simulators and field sensor nodes, according to Chen.
Global Times 
。1月9日消息今日早些时候，有报道称，今天的头条已达到优酷的收购，正在与西瓜视频业务对接。

B | 据新浪科技新闻网报道，针对传言，优酷回应称：爆炸完全是胡说八道，严重影响优酷品牌声誉，优酷将追究相关自媒体传播虚假新闻的法律责任；字节弹跳副总裁李亮回应称“该消息不真实”；阿里·达文说，这个内容是虚假新闻，谣言应该承担法律责任。自从去年以来，关于购买优酷的传言就流传了。2018年12月21日，据《时代》和《金融新闻》报道，字节弹跳（今天的头条新闻和特雷莫洛母公司）正与阿里巴巴洽谈收购优酷和阿里巴巴音乐相关业务。据报道，这笔交易的金额高达50亿美元。优酷官方微博帖子叫“胡说”！今天的头条新闻也回应说“这个谣言不是真的”。优酷和阿里音乐阿里娱乐是阿里集团在娱乐领域培育的主要业务。成立于2016年10月31日。其中，阿里巴巴音乐于2015年3月16日正式成立，由阿里巴巴集团旗下的两个音乐服务机构，虾米音乐和阿里巴巴星球（每天都很美）合并而成。优酷于2016年4月6日完成私有化，正式成为阿里巴巴的全资子公司。

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Published on:09:28:46