父母爱情

A |     

    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 
。

B |     日报讯（见习记者王晶晶）不用手动填表、无需长时间等待，站在AI智能体“小新”面前说一句“请帮我办理营业执照”，按提示上传关键材料，企业营业执照即可申领完成。这是在石家庄高新区政务服务大厅里发生的一幕。

C | 8月17日，石家庄薇玖信息技术有限公司经办人董红璇作为AI智能体“小新”的首批服务对象，实地体验了它的高效和便捷。按照语音提示上传材料之后，AI自动识别并抓取身份证件、住所证明等核心信息进行填报，几分钟就完成了企业设立登记申请。

D | “真没想到，机器人能自动填表格。”董红璇说。企业设立登记申请涉及名称申报、人员信息核验、经营范围勾选、住所证明提交等环节，申报材料多、重复填表是长期痛点。石家庄高新区行政审批局依托人工智能大模型技术，上线AI智能体“小新”，辅助企业快速办理营业执照。

E | 不同于传统问答式智能客服，“小新”最大的本领是“帮办”业务。它可以通过语音对话和智能引导，自动采集数据、生成申请材料。

F | 企业经办人只需按照语音提示，将人员身份证、住所使用证明等关键材料拍照上传，“小新”即可抓取姓名、身份证号、注册地址等核心信息，自动进行逻辑校验、自动填入申报系统，输出规范材料，等待生成执照。

G | 如此一来省去了过去动辄半小时以上的填写流程。石家庄市高新区行政审批局商事登记工作组负责人杨斌淇介绍，AI智能体减少了人工核验负担。比如身份信息采集，以往需人工反复录入十多次，现在“小新”一次采集、多次复用；企业经营范围填报，过去经办人需在数千条目中反复点选、上下翻找，现在“小新”能根据企业描述实现智能匹配。据介绍，石家庄高新区将推动AI服务向企业变更、备案、注销等全生命周期中的需求延伸，持续提升政务服务智能化、精细化水平。