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A self-adaptive inorganic in-situ separator by particle crosslinking for nonflammable lithium-ion batteries

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Journal of Energy Chemistry 2025年第1期100卷 469-480页

作者： Jiarui Yang Jiuzhou Liu Wenrui Cai Ziyu Zhao Shan Wang Lu He Shanshan Lv Zhiwei Zhu Zhongfeng Ji Guojiang Wen Hua Li Yuanming zhai Xuewei Fu Wei Yang Yu Wang College of Polymer Science and Engineering State Key Laboratory of Polymer Materials EngineeringSichuan UniversityChengdu 610065SichuanChina

All-safe liquid-state lithium-ion batteries(ASLS-LIBs) is of great interest as they can potentially combine the safety of all-solid-state batteries with the high performance and low manufacturing cost of traditional liquid-state LIBs. However, the practical success of ASLS-LIBs is bottlenecked by the lack of advanced separator technology that can simultaneously realize high performances in puncturing-tolerability,fire-resistance, and importantly, wetting-capability with non-flammable liquid-electrolytes. Here, we propose a concept of inorganic in-situ separator(IISS) by hybrid-sol physical crosslinking directly onto the electrode surface to address the above challenges. Particularly, the hybrid-sol is designed with silica nanoparticles as the building block and poly(vinylidene difluoride) nanoparticles as the crosslinking agent. The critical factors for controlling the IISS microstructures and properties have been systematically investigated. The advantages of the IISS have been confirmed by its fast wetting with various fireresistant liquid-electrolytes, customizable thickness and porous structures, robust interface with planar or three-dimensional(3D)-structured electrodes, and importantly, unexpected self-adaptability against puncturing. Enabled by the above merits, a fire-resistant ASLS-LIB is successfully assembled and demonstrated with stable electrochemical performance. This sol-crosslinked IISS may open an avenue for the studies on the next-generation separator technology, cell assembling, solid electrolyte processing as well as non-flammable secondary batteries.

关键词： Safe liquid-state lithium-ion batteries In-situ separator technology Hybrid-sol physical crosslinking Electrode coating Inorganic nonflammable separator

Failure mechanisms of AlGaN/GaN HEMTs irradiated by high-energy heavy ions with and without bias

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Nuclear Science and Techniques 2025年第1期36卷 49-58页

作者： Pei-Pei Hu Li-Jun Xu Sheng-Xia Zhang Peng-Fei zhai Ling Lv Xiao-Yu Yan Zong-Zhen Li Yan-Rong Cao Xue-Feng Zheng Jian Zeng Yuan He Jie Liu Institute of Modern Physics Chinese Academy of Sciences(CAS)Lanzhou 730000China Key Laboratory of Wide Band‑gap Semiconductor Materials Ministry of EducationXidian UniversityXi’an 710071China University of Chinese Academy of Sciences(UCAS) Beijing 100049China

Gallium nitride(GaN)-based devices have significant potential for space ***,the mechanisms of radiation damage to the device,particularly from strong ionizing radiation,remains *** study investigates the effects of radiation on p-gate AlGaN/GaN high-electron-mobility transistors(HEMTs).Under a high voltage,the HEMT leakage current increased sharply and was accompanied by a rapid increase in power density that caused"thermal burnout"of the *** addition,a burnout signature appeared on the surface of the burned devices,proving that a single-event burnout effect ***,degradation,including an increase in the on-resistance and a decrease in the breakdown voltage,was observed in devices irradiated with high-energy heavy ions and without *** latent tracks induced by heavy ions penetrated the heterojunction interface and extended into the GaN ***,a new type of N_(2)bubble defect was discovered inside the tracks using Fresnel *** accumulation of N_(2)bubbles in the heterojunction and buffer layers is more likely to cause leakage and *** study indicates that electrical stress accelerates the failure rate and that improving heat dissipation is an effective reinforcement method for GaN-based devices.

关键词： GaN HEMTs Heavy ions Single-event burnout Latent tracks Degradation

Dimensional-noise-aware battery lifetime prediction via an EM-TLS framework

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Progress in Natural Science:Materials International 2025年第01期 146-155页

作者： Chenlong Yu Ting Lu Guohua Liu Xiaoang zhai Wuyan Deng Jiayu Wan Yang Liu Xin Li School of Computer Science and Technology Donghua University Future Battery Research Center Global Institute of Future Technology Shanghai Jiaotong University Data Science Research Center Duke Kunshan University

Machine learning has been massively utilized to construct data-driven solutions for predicting the lifetime of rechargeable batteries in recent years, which project the physical measurements obtained during the early charging/discharging cycles to the remaining useful lifetime. While most existing techniques train the prediction model through minimizing the prediction error only, the errors associated with the physical measurements can also induce negative impact to the prediction accuracy. Although total-least-squares(TLS) regression has been applied to address this issue, it relies on the unrealistic assumption that the distributions of measurement errors on all input variables are equivalent, and cannot appropriately capture the practical characteristics of battery degradation. In order to tackle this challenge, this work intends to model the variations along different input dimensions, thereby improving the accuracy and robustness of battery lifetime prediction. In specific, we propose an innovative EM-TLS framework that enhances the TLS-based prediction to accommodate dimension-variate errors, while simultaneously investigating the distributions of them using expectation-maximization(EM). Experiments have been conducted to validate the proposed method based on the data of commercial Lithium-Ion batteries, where it reduces the prediction error by up to 29.9 % compared with conventional TLS. This demonstrates the immense potential of the proposed method for advancing the R&D of rechargeable batteries.

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特朗普2.0冲击下东盟大国平衡战略的发展前景

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当代世界 2025年第2期 16-21页

作者：翟崑北京大学区域与国别研究院北京大学国际关系学院

东盟大国平衡战略是指东盟组织及其成员为寻求自身和地区的安全与发展,总体上对周围大国实施多面交好、不偏不倚的外交战略。在长期复杂演进的国际格局中,尤其是在百年未有之大变局背景下,东盟大国平衡战略日趋成熟,对维护东盟国家自身... 详细信息

东盟大国平衡战略是指东盟组织及其成员为寻求自身和地区的安全与发展,总体上对周围大国实施多面交好、不偏不倚的外交战略。在长期复杂演进的国际格局中,尤其是在百年未有之大变局背景下,东盟大国平衡战略日趋成熟,对维护东盟国家自身利益、东盟共同体建设以及东亚和亚太区域的合作与稳定发挥了重要作用。特朗普2.0时期,东盟大国平衡战略将面临全方位的强劲冲击,其在中美之间搞平衡的难度将加大。东盟大国平衡战略的发展前景,是在前期积累的丰富战略实践和历史经验基础上综合运用和创新各种策略,在中美大国关系演进中寻求共生与合作空间。可持续且具有韧性的东盟大国平衡战略,对亚太和全球秩序的良性发展具有重要意义。

关键词：东盟大国平衡战略特朗普2.0东盟中心地位

Spontaneous Orientation Polarization of Anisotropic Equivalent Dipoles Harnessed by Entropy Engineering for Ultra‑Thin Electromagnetic Wave Absorber

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Nano-Micro Letters 2025年第1期17卷 424-438页

作者： Honghan Wang Xinyu Xiao Shangru zhai Chuang Xue Guangping Zheng Deqing Zhang Renchao Che Junye Cheng Liaoning Key Lab of Lignocellulose Chemistry and BioMaterials Liaoning Collaborative Innovation Center for Lignocellulosic BiorefinerySchool of Light Industry and Chemical EngineeringDalian Polytechnic UniversityDalian 116034People’s Republic of China School of Life Science and Biotechnology Dalian University of TechnologyDalian 116024People’s Republic of China Department of Mechanical Engineering Hong Kong Polytechnic UniversityHung HomKowloonHong Kong 999077People’s Republic of China School of Materials Science and Engineering Qiqihar UniversityQiqihar 161006People’s Republic of China Laboratory of Advanced Materials Shanghai Key Lab of Molecular Catalysis and Innovative MaterialsAcademy for Engineering&TechnologyFudan UniversityShanghai 200438People’s Republic of China Department of Materials Science Shenzhen MSU-BIT UniversityShenzhen 517182People’s Republic of China

The synthesis of carbon supporter/nanoscale high-entropy alloys(HEAs)electromagnetic response composites by carbothermal shock method has been identified as an advanced strategy for the collaborative competition engineering of conductive/dielectric *** migration modes within HEAs as manipulated by the electronegativity,valence electron configurations and molar proportions of constituent elements determine the steady state and efficiency of equivalent ***,enlightened by skin-like effect,a reformative carbothermal shock method using carbonized cellulose paper(CCP)as carbon supporter is used to preserve the oxygencontaining functional groups(O·)of carbonized cellulose fibers(CCF).Nucleation of HEAs and construction of emblematic shell-core CCF/HEAs heterointerfaces are inextricably linked to carbon metabolism induced by O·.Meanwhile,the electron migration mode of switchable electronrich sites promotes the orientation polarization of anisotropic equivalent *** virtue of the reinforcement strategy,CCP/HEAs composite prepared by 35%molar ratio of Mn element(CCP/HEAs-Mn_(2.15))achieves efficient electromagnetic wave(EMW)absorption of−51.35 dB at an ultra-thin thickness of 1.03 *** mechanisms of the resulting dielectric properties of HEAs-based EMW absorbing materials are elucidated by combining theoretical calculations with experimental characterizations,which provide theoretical bases and feasible strategies for the simulation and practical application of electromagnetic functional devices(e.g.,ultra-wideband bandpass filter).

关键词： High-entropy alloys Carbothermal shock Switchable electron migration modes Emblematic shell-core heterointerfaces Ultra-thin thickness

五氨基-1h-四唑基燃烧型催泪弹主装药的燃烧特性及热解动力学研究

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兵器装备工程学报 2025年第1期46卷 109-115页

作者：翟浩龙武警士官学校杭州311400

为研究五氨基-1h-四唑基燃烧型催泪弹主装药的燃烧热解特性和相关动力学参数,进而为优化该类催泪弹配方提供新的方案,对该类主装药的燃烧温度、速度等燃烧特性参数进行了测试;利用烟雾测试系统对其烟雾浓度以及粒径进行了表征;采用TG-DS... 详细信息

为研究五氨基-1h-四唑基燃烧型催泪弹主装药的燃烧热解特性和相关动力学参数,进而为优化该类催泪弹配方提供新的方案,对该类主装药的燃烧温度、速度等燃烧特性参数进行了测试;利用烟雾测试系统对其烟雾浓度以及粒径进行了表征;采用TG-DSC分析技术和分布活化能模型研究新配方在不同升温速率范围内的热解行为,并采用Starink法、Flynn-Wall-Ozawa法和Coats-Redfern法,对该类主装药的热解动力学参数进行了评价。研究表明,五氨基-1h-四唑基燃烧型催泪弹主装药基本符合该类型主装药的性能需求,其热解过程中各阶段发生的反应分别符合扩散模型和成核模型,热解的第一至四阶段分别对应的反应模型为D3、A2、D3和D2,该模型为进一步探究该类主装药的热解机理、深入研究改良配方奠定了一定的理论基础。

关键词：五氨基-1h-四唑催泪弹主装药燃烧特性热解动力学

THE SHIFTED-INVERSE POWER WEAK GALERKIN METHOD FOR EIGENVALUE PROBLEMS

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Journal of Computational Mathematics 2020年第4期38卷 606-623页

作者： Qilong zhai Xiaozhe Hu ran Zhang Department of Mathematics Peking UniversityBeijing 100871China Department of Mathematics Tufts UniversityMedford02155USA Department of Mathematics Jilin UniversityChangchun 130012China

This paper proposes and analyzes a new weak Galerkin method for the eigenvalue problem by using the shifted-inverse power technique.A high order lower bound can be obtained at a relatively low cost via the proposed *** error estimates for both eigenvalue and eigenfunction are provided and asymptotic lower bounds are shown as well under some *** examples are presented to validate the theoretical analysis.

关键词： Weak Galerkin finite element method Eigenvalue problem Shifted-inverse power method Lower bound

The energy performance and passive survivability of high thermal insulation buildings in future climate scenarios

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Building Simulation 2022年第7期15卷 1209-1225页

作者： ran Wang Shilei Lu Xue zhai Wei Feng School of Environment Science and Engineering Tianjin University92 Weijin RoadTianjin300072China Tianjin Key Laboratory of Built Environment and Energy Application Tianjin UniversityTianjin300350China Lawrence Berkeley National Laboratory BerkeleyCA 94720USA

Given that the passive performance simulation of buildings based on typical meteorological year data and specific design schemes makes it challenging to respond to climate change and refine design requirements on time,this article established a passive performance prediction model for future buildings considering multi-dimensional variables including climate change,building design,and operational *** high thermal insulation buildings under future climates,the mild climate zone is more sensitive than the others,cooling energy demand is more sensitive than heating demand,apartments are more sensitive than office buildings,and passive survivability is more sensitive than energy performance;for buildings of the same type located in the same climate zone,thermal design solutions determine the increase rate of cooling *** potential benefits of climate warming on heating demand reduction are almost zero,but the cooling demand increases significantly,with apartments and office buildings increasing up to 22.1% and 5.0%,*** generally overheat in the future,and the increase rate of the mild zone far exceeds other zones with duration and severity being 3004.8% and 877.7%for apartments,and 884.3% and 288.9%for office buildings,respectively.

关键词： climate change overheating risk cooling demand heating demand scenarios thermal insulation

Blocking of the PD-1/PD-L1 interaction by a novel cyclic peptide inhibitor for cancer immunotherapy

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Science China(Life Sciences) 2021年第4期64卷 548-562页

作者： Wenjie zhai Xiuman Zhou Mingxia zhai Wanqiong Li Yunhui ran Yixuan Sun Jiangfeng Du Wenshan Zhao Lingxiao xing Yuanming Qi Yanfeng Gao School of Life Sciences Zhengzhou UniversingZhengzhou 450001China School of Pharmacenutical Sciences(Shenzhen) Sun Yar-sen UniversiyShenzhen 518107.China Deparment of Pathology Hebei Medical University Shijazhuang 050017China

The interaction of PD-1/PD-L1 allows tumor cells to escape from immune *** success of the antibody drugs has proven that blockade of PD-1/PD-L1 pathway is a promising strategy for cancer ***,we developed a cyclic peptide C8 by using Ph.D.-C7 C phage display technology.C8 showed high binding affinity with h PD-1 and could effectively interfere the interaction of PD-1/***,C8 could stimulate CD8^(+)T cell activation in human peripheral blood mononuclear cells(PBMCs).We also observed that C8 could suppress tumor growth in CT26 and B16-OVA,as well as anti-PD-1 antibody resistant B16 mouse ***8^(+)T cells infiltration significantly increased in tumor microenvironment,and IFN-γsecretion by CD8^(+)T cells in draining lymph nodes also ***,we exploited T cells depletion models and confirmed that C8 exerted anti-tumor effects via activating CD8^(+)T cells dependent *** interaction model of C8 with h PD-1 was simulated and confirmed by alanine *** conclusion,C8 shows anti-tumor capability by blockade of PD-1/PD-L1 interaction,and C8 may provide an alternative candidate for cancer immunotherapy.

关键词： PD-1/PD-L1 cancer immunotherapy immune checkpoint blockade cyclic peptide phage display CD8~+T cell