China built and has brought to full power the world's first-ever thorium-containing molten salt reactor.
News on China's scientific and technological development.
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Maybe. Different sirtuins are expressed at different levels all over the body.
Latest data on Chinas machine tool market is out: in 2024 domestic brand 5axis CNC makers market share by revenue surpassed 50% for the first time in history. Just like the auto market, once domestic brands surpass 50% market share in the worlds largest and most competitive market, they will become competitive internationally very soon
Where there is still a gap is the localization of machines that make the machines, i.e, Large format, ultra precision gantry mills, ultra-precision surface, ID, OD grinders, etc... Think Mitsui Seiki, Yasda, Starrag, Waldrich Coburg, Studer, Danobat, Burkhardt+Webber, SIP, etc.
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This is a big news..
Dr. Guo-Jun Qi, an absolute legend in the field of AI. After working in the United States for over 10 years, he has now returned to China..
Award-winning AI researcher and entrepreneur Guo-Jun Qi has joined Westlake University in Hangzhou after spending over a decade working in the United States. Now a full-time faculty member at the School of Engineering, Qi leads the Machine Perception and Learning (MAPLE) Lab, where he oversees a team of 20 researchers focused on AI and deep learning for image, video, and virtual environment generation..
Dr. Guo-Jun Qi, an absolute legend in the field of AI. After working in the United States for over 10 years, he has now returned to China..
Award-winning AI researcher and entrepreneur Guo-Jun Qi has joined Westlake University in Hangzhou after spending over a decade working in the United States. Now a full-time faculty member at the School of Engineering, Qi leads the Machine Perception and Learning (MAPLE) Lab, where he oversees a team of 20 researchers focused on AI and deep learning for image, video, and virtual environment generation..
AI expert Guo-Jun Qi leaves US for China
After a decade in America, a leading computer scientist has returned to China to head a top artificial intelligence lab
China unveils world's largest protein sequence dataset containing 9.05 billion protein sequences
supercat
Major
Amyotrophic lateral sclerosis (ALS) has no cure currently. The average survival time for ALS patients is 3-5 years, with some exceptions such as Stephen Hawkins, the English physicist. A Chinese gene therapy just received FDA approval for clinical trials in the US.
Scientists from Southern University of Science and Technology created sodium-ion batteries that can retain 72% capacity after 100000 cycles.
The practical application of Na3V2(PO4)3, a polyanionic cathode for sodium-ion batteries, is constrained by its poor electronic conductivity, limited specific capacity, and slow kinetics. In this study, an integrated polyanion-layered oxide cathode embedded within a porous carbon framework is designed. This cathode features an intergrown biphasic heterostructure, consisting of a Na-rich polyanionic compound, Na3.5V1.5Fe0.5(PO4)3 (NVFP), and a layered oxide, V2O3 (NVFP–VO), which is optimized to enhance Na-ion storage performance. Fe doping reduces the bandgap of Na3V2(PO4)3 and activates its V4+/V5+ redox couple, enhancing both electronic conductivity and specific capacity. The porous carbon framework further improves the electronic conductivity of the integrated cathode and accommodates volume fluctuations during cycling. The heterostructure lowers ion transport barriers and accelerates reaction kinetics. Additionally, the low-strain V2O3 phase functions as a stabilizer, effectively buffering volume fluctuations and stress gradients in NVFP. The spontaneous activation of V2O3 further increases the capacity of the integrated cathode. Consequently, the cathode achieves a high reversible capacity of over 130 mA h g−1 at 0.1C and exhibits unprecedented cyclability, maintaining over 100 000 cycles with 72.6% capacity retention at 100C in half-cells. This represents the longest cycle life reported among polyanion-based cathodes. In addition, our prepared Ah-level pouch cells exhibit a high energy density of 153.4 W h kg−1and a long cycle life exceeding 500 cycles. This study demonstrates that synergistic effects in multiphase integrated cathodes promote the development of advanced cathode materials for high-energy-density, fast-charging, and long-life sodium-ion batteries.
近年来，钠离子电池凭借其原材料资源储备丰富、提取成本较低、自主可控等优势，正加速从实验室迈向产业化，有望与锂离子电池在储能领域形成互补，展现出了巨大的发展潜力和广阔的应用前景。
近日，中国科学院院士、南方科技大学机械与能源工程系讲席教授赵天寿，副研究员韩美胜，副教授曾林团队提出了一种集成聚阴离子和层状氧化物的复合正极用于钠离子电池，实现了十万圈循环寿命，容量保持率达72.6%，为长寿命、低成本钠离子电池设计策略带来新思路。相关成果发表在国际能源顶尖期刊《能源与环境科学》上。
突破长循环寿命极限
锂离子电池凭借其高能量密度、长循环寿命和成本持续降低的优势，被广泛应用于电动汽车、储能系统等新能源领域。然而，锂资源短缺的问题制约了其发展，进一步促使研究人员和产业界探索替代技术。
钠资源丰富，成本低，且与锂同族，化学性质相似，有望成为锂的有力补充。此外，研究发现钠离子电池在低温性能、安全性方面优势突出，其性能特征和市场前景已被市场充分认知，被认为是最有潜力的新型储能电池之一。然而，传统钠离子电池正极材料存在明显短板，聚阴离子型化合物稳定性高但容量低，层状氧化物容量高却易受空气和水汽侵蚀，且循环稳定性差。
在该研究中，该团队设计了一种嵌入多孔碳框架的聚阴离子-层状氧化物复合正极，该正极由富钠聚阴离子化合物和层状氧化物组成原位共生双相异质结构，经过优化后显著提升了钠离子存储性能。
研究团队创新性地将聚阴离子型化合物和层状氧化物结合，通过铁掺杂降低磷酸钒钠的带隙，激活钒元素的氧化还原反应，提升导电性和比容量；同时引入多孔碳骨架，增强电子传导并缓冲体积膨胀。此外，低应变的层状氧化物相作为“稳定剂”，有效缓解充放电过程中的结构应力。
论文第一作者、南科大机械与能源工程系硕士生邹支宇介绍，该复合正极在0.1C倍率下可逆容量达130mAh/g，100C高倍率的电流密度下，循环十万次后容量保持率为72.6%，远超当前聚阴离子型正极的寿命极限,比绝大多数的报道高出一个数量级。团队还成功制备出安时级软包电池，能量密度达153.4Wh/kg，循环寿命超500次，为后续工程化验证奠定基础。
钠电产业迎来广阔发展机遇
当前，全球范围内,钠电池市场规模正呈现快速增长态势。根据《2024中国钠离子电池报告》数据显示，当前，钠离子电池在全球范围内已实现了小规模生产以及特定场景的示范应用，2023年全球市场规模达3.2亿美元，预计到2030年将接近10亿美元。
近年来，我国高度重视钠离子电池的研发应用。2022年，钠离子电池被列入《“十四五”能源领域科技创新规划》；2023年，工信部等六部门联合发布《关于推动能源电子产业发展的指导意见》，明确加强新型储能电池产业化技术攻关。
“从电池全生命周期来看，长寿命正极材料有望进一步推动钠离子电池在储能领域的应用和发展。”论文第一通讯作者、南科大副研究员韩美胜介绍，研究团队通过将钠离子电池正极的两个主要体系-聚阴离子和层状氧化物正极桥接起来，表明集成正极中的协同效应可以推动高能量密度、快速充电和长循环寿命正极的开发，并拓宽了未来正极研究的组成空间。
这种长寿命、低成本的钠离子电池正极设计策略展现了其在未来大规模储能系统中的广泛应用前景。
”尽管钠资源储量是锂的千倍，但与锂电池相比其产业链尚未成熟，研发时间较短。目前钠离子电池大规模商业化的核心挑战在于成本高、能量密度低以及循环寿命短。”韩美胜表示，当前钠离子电池硬碳负极容量低、首效低、循环寿命相对较短以及电解液成本高等制约了钠电池的产业应用，推动钠离子电池的发展需要多线并进。目前研究团队正在积极探索适配这款长寿命正极的负极材料和电解液体系，以完善长寿命钠离子电池研发体系。未来，随着技术迭代与政策支持，钠离子电池有望成为大规模储能的主力军，助力我国实现“双碳”目标与能源安全战略。
The practical application of Na3V2(PO4)3, a polyanionic cathode for sodium-ion batteries, is constrained by its poor electronic conductivity, limited specific capacity, and slow kinetics. In this study, an integrated polyanion-layered oxide cathode embedded within a porous carbon framework is designed. This cathode features an intergrown biphasic heterostructure, consisting of a Na-rich polyanionic compound, Na3.5V1.5Fe0.5(PO4)3 (NVFP), and a layered oxide, V2O3 (NVFP–VO), which is optimized to enhance Na-ion storage performance. Fe doping reduces the bandgap of Na3V2(PO4)3 and activates its V4+/V5+ redox couple, enhancing both electronic conductivity and specific capacity. The porous carbon framework further improves the electronic conductivity of the integrated cathode and accommodates volume fluctuations during cycling. The heterostructure lowers ion transport barriers and accelerates reaction kinetics. Additionally, the low-strain V2O3 phase functions as a stabilizer, effectively buffering volume fluctuations and stress gradients in NVFP. The spontaneous activation of V2O3 further increases the capacity of the integrated cathode. Consequently, the cathode achieves a high reversible capacity of over 130 mA h g−1 at 0.1C and exhibits unprecedented cyclability, maintaining over 100 000 cycles with 72.6% capacity retention at 100C in half-cells. This represents the longest cycle life reported among polyanion-based cathodes. In addition, our prepared Ah-level pouch cells exhibit a high energy density of 153.4 W h kg−1and a long cycle life exceeding 500 cycles. This study demonstrates that synergistic effects in multiphase integrated cathodes promote the development of advanced cathode materials for high-energy-density, fast-charging, and long-life sodium-ion batteries.
近年来，钠离子电池凭借其原材料资源储备丰富、提取成本较低、自主可控等优势，正加速从实验室迈向产业化，有望与锂离子电池在储能领域形成互补，展现出了巨大的发展潜力和广阔的应用前景。
近日，中国科学院院士、南方科技大学机械与能源工程系讲席教授赵天寿，副研究员韩美胜，副教授曾林团队提出了一种集成聚阴离子和层状氧化物的复合正极用于钠离子电池，实现了十万圈循环寿命，容量保持率达72.6%，为长寿命、低成本钠离子电池设计策略带来新思路。相关成果发表在国际能源顶尖期刊《能源与环境科学》上。
突破长循环寿命极限
锂离子电池凭借其高能量密度、长循环寿命和成本持续降低的优势，被广泛应用于电动汽车、储能系统等新能源领域。然而，锂资源短缺的问题制约了其发展，进一步促使研究人员和产业界探索替代技术。
钠资源丰富，成本低，且与锂同族，化学性质相似，有望成为锂的有力补充。此外，研究发现钠离子电池在低温性能、安全性方面优势突出，其性能特征和市场前景已被市场充分认知，被认为是最有潜力的新型储能电池之一。然而，传统钠离子电池正极材料存在明显短板，聚阴离子型化合物稳定性高但容量低，层状氧化物容量高却易受空气和水汽侵蚀，且循环稳定性差。
在该研究中，该团队设计了一种嵌入多孔碳框架的聚阴离子-层状氧化物复合正极，该正极由富钠聚阴离子化合物和层状氧化物组成原位共生双相异质结构，经过优化后显著提升了钠离子存储性能。
研究团队创新性地将聚阴离子型化合物和层状氧化物结合，通过铁掺杂降低磷酸钒钠的带隙，激活钒元素的氧化还原反应，提升导电性和比容量；同时引入多孔碳骨架，增强电子传导并缓冲体积膨胀。此外，低应变的层状氧化物相作为“稳定剂”，有效缓解充放电过程中的结构应力。
论文第一作者、南科大机械与能源工程系硕士生邹支宇介绍，该复合正极在0.1C倍率下可逆容量达130mAh/g，100C高倍率的电流密度下，循环十万次后容量保持率为72.6%，远超当前聚阴离子型正极的寿命极限,比绝大多数的报道高出一个数量级。团队还成功制备出安时级软包电池，能量密度达153.4Wh/kg，循环寿命超500次，为后续工程化验证奠定基础。
钠电产业迎来广阔发展机遇
当前，全球范围内,钠电池市场规模正呈现快速增长态势。根据《2024中国钠离子电池报告》数据显示，当前，钠离子电池在全球范围内已实现了小规模生产以及特定场景的示范应用，2023年全球市场规模达3.2亿美元，预计到2030年将接近10亿美元。
近年来，我国高度重视钠离子电池的研发应用。2022年，钠离子电池被列入《“十四五”能源领域科技创新规划》；2023年，工信部等六部门联合发布《关于推动能源电子产业发展的指导意见》，明确加强新型储能电池产业化技术攻关。
“从电池全生命周期来看，长寿命正极材料有望进一步推动钠离子电池在储能领域的应用和发展。”论文第一通讯作者、南科大副研究员韩美胜介绍，研究团队通过将钠离子电池正极的两个主要体系-聚阴离子和层状氧化物正极桥接起来，表明集成正极中的协同效应可以推动高能量密度、快速充电和长循环寿命正极的开发，并拓宽了未来正极研究的组成空间。
这种长寿命、低成本的钠离子电池正极设计策略展现了其在未来大规模储能系统中的广泛应用前景。
”尽管钠资源储量是锂的千倍，但与锂电池相比其产业链尚未成熟，研发时间较短。目前钠离子电池大规模商业化的核心挑战在于成本高、能量密度低以及循环寿命短。”韩美胜表示，当前钠离子电池硬碳负极容量低、首效低、循环寿命相对较短以及电解液成本高等制约了钠电池的产业应用，推动钠离子电池的发展需要多线并进。目前研究团队正在积极探索适配这款长寿命正极的负极材料和电解液体系，以完善长寿命钠离子电池研发体系。未来，随着技术迭代与政策支持，钠离子电池有望成为大规模储能的主力军，助力我国实现“双碳”目标与能源安全战略。