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中国科学家的锂离子修复技术能延寿六倍

2025-02-19 23:58 by 水刀子

上海复旦大学的研究人员在《自然》期刊上发表论文,报告开发出一种革命性的修复技术,可使锂离子电池的使用寿命延长六倍以上。研究人员表示这种低成本的、环保的技术有望迅速投入市场。复旦大学团队研究发现,电池的“寿命”其实和人体健康类似,其老化问题往往集中在某个核心部件,也就是活性锂离子。如果能精准补充损失的锂离子,就能大大延长电池的使用时间。基于这个想法,团队开发了一种像“药物”一样的锂载体分子,可以通过注射的方式补充电池中的锂离子。研究人员说,一个商用的磷酸铁锂电池,按照以往来说,在使用 2000 次之后,就会容量衰减、报废。有了这项技术,可以使它在使用 12000 次之后,还能够保持一个接近于初始电池的“健康”状态。

Nature:External Li supply reshapes Li deficiency and lifetime limit of batteries
央视:锂电池“打一针”就能“重生”!《自然》刊登我国科研团队新发现

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中国科学家的锂离子修复技术能延寿六倍

2025-02-19 23:58 by 水刀子

上海复旦大学的研究人员在《自然》期刊上发表论文,报告开发出一种革命性的修复技术,可使锂离子电池的使用寿命延长六倍以上。研究人员表示这种低成本的、环保的技术有望迅速投入市场。复旦大学团队研究发现,电池的“寿命”其实和人体健康类似,其老化问题往往集中在某个核心部件,也就是活性锂离子。如果能精准补充损失的锂离子,就能大大延长电池的使用时间。基于这个想法,团队开发了一种像“药物”一样的锂载体分子,可以通过注射的方式补充电池中的锂离子。研究人员说,一个商用的磷酸铁锂电池,按照以往来说,在使用 2000 次之后,就会容量衰减、报废。有了这项技术,可以使它在使用 12000 次之后,还能够保持一个接近于初始电池的“健康”状态。

Nature:External Li supply reshapes Li deficiency and lifetime limit of batteries
央视:锂电池“打一针”就能“重生”!《自然》刊登我国科研团队新发现

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Russians and Ukrainians are both prolific users of Telegram. They rely on the app for channels that act as newsfeeds, group chats (both public and private), and one-to-one communication. Since the Russian invasion of Ukraine, Telegram has remained an important lifeline for both Russians and Ukrainians, as a way of staying aware of the latest news and keeping in touch with loved ones. Since its launch in 2013, Telegram has grown from a simple messaging app to a broadcast network. Its user base isn’t as vast as WhatsApp’s, and its broadcast platform is a fraction the size of Twitter, but it’s nonetheless showing its use. While Telegram has been embroiled in controversy for much of its life, it has become a vital source of communication during the invasion of Ukraine. But, if all of this is new to you, let us explain, dear friends, what on Earth a Telegram is meant to be, and why you should, or should not, need to care. Telegram has gained a reputation as the “secure” communications app in the post-Soviet states, but whenever you make choices about your digital security, it’s important to start by asking yourself, “What exactly am I securing? And who am I securing it from?” These questions should inform your decisions about whether you are using the right tool or platform for your digital security needs. Telegram is certainly not the most secure messaging app on the market right now. Its security model requires users to place a great deal of trust in Telegram’s ability to protect user data. For some users, this may be good enough for now. For others, it may be wiser to move to a different platform for certain kinds of high-risk communications. One thing that Telegram now offers to all users is the ability to “disappear” messages or set remote deletion deadlines. That enables users to have much more control over how long people can access what you’re sending them. Given that Russian law enforcement officials are reportedly (via Insider) stopping people in the street and demanding to read their text messages, this could be vital to protect individuals from reprisals. Given the pro-privacy stance of the platform, it’s taken as a given that it’ll be used for a number of reasons, not all of them good. And Telegram has been attached to a fair few scandals related to terrorism, sexual exploitation and crime. Back in 2015, Vox described Telegram as “ISIS’ app of choice,” saying that the platform’s real use is the ability to use channels to distribute material to large groups at once. Telegram has acted to remove public channels affiliated with terrorism, but Pavel Durov reiterated that he had no business snooping on private conversations.
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