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Functional Optical Fiber Sensors Detecting Imperceptible Physical/Chemical Changes for Smart Batteries

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Nano-Micro Letters 2024年第8期16卷 268-308页

作者： Yiding Li Li Wang Youzhi Song Wenwei Wang Cheng Lin xiangming he Institute of Nuclear and New Energy Technology Tsinghua UniversityBeijing 100084People’s Republic of China National Engineering Research Center of Electric Vehicles Beijing Institute of Technology(BIT)Beijing 100081People’s Republic of China Shenzhen Automotive Research Institute of BIT(Shenzhen Research Institute of National Engineering Research Center of Electric Vehicles) Shenzhen 518118People’s Republic of China

The battery technology progress has been a contradictory process in which performance improvement and hidden risks *** the battery is still a“black box”,thus requiring a deep understanding of its internal *** battery should“sense its internal physical/chemical conditions”,which puts strict requirements on embedded sensing *** paper summarizes the application of advanced optical fiber sensors in lithium-ion batteries and energy storage technologies that may be mass deployed,focuses on the insights of advanced optical fiber sensors into the processes of one-dimensional nano-micro-level battery material structural phase transition,electrolyte degradation,electrode-electrolyte interface dynamics to three-dimensional macro-safety *** paper contributes to understanding how to use optical fiber sensors to achieve“real”and“embedded”*** the inherent advantages of the advanced optical fiber sensor,it helps clarify the battery internal state and reaction mechanism,aiding in the establishment of more detailed *** advancements can promote the development of smart batteries,with significant importance lying in essentially promoting the improvement of system ***,with the help of smart batteries in the future,the importance of consistency can be weakened or even *** application of advanced optical fiber sensors helps comprehensively improve the battery quality,reliability,and life.

关键词： Smart battery Advanced embedded optical fiber sensor Battery internal physical/chemical state Quality-reliability-life characteristic

PDOL-Based Solid Electrolyte Toward Practical Application:Opportunities and Challenges

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Nano-Micro Letters 2024年第7期16卷 109-141页

作者： Hua Yang Maoxiang Jing Li Wang Hong Xu Xiaohong Yan xiangming he Institute for Advanced Materials School of Materials Science and EngineeringJiangsu UniversityZhenjiang 212013People’s Republic of China Institute of Nuclear and New Energy Technology Tsinghua UniversityBeijing 100084People’s Republic of China

Polymer solid-state lithium batteries(SSLB)are regarded as a promising energy storage technology to meet growing demand due to their high energy density and *** conductivity,interface stability and battery assembly process are still the main challenges to hurdle the commercialization of *** the main component of SSLB,poly(1,3-dioxolane)(PDOL)-based solid polymer electrolytes polymerized in-situ are becoming a promising candidate solid elec-trolyte,for their high ion conductivity at room temperature,good battery elec-trochemical performances,and simple assembly *** review analyzes opportunities and challenges of PDOL electrolytes toward practical application for polymer *** focuses include exploring the polymerization mechanism of DOL,the performance of PDOL composite electrolytes,and the application of ***,we provide a perspective on future research directions that need to be emphasized for commercialization of PDOL-based electrolytes in *** exploration of these schemes facilitates a comprehensive and profound understanding of PDOL-based polymer electrolyte and provides new research ideas to boost them toward practical application in solid-state batteries.

关键词： Poly(1,3-dioxolane) Solid electrolyte Polymerization mechanism Composite electrolyte Practical application

Boosting reversible charging of Li-ion batteries at low temperatures by a synergy of propylene carbonate-based electrolyte and defective graphite

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Nano Research 2024年第3期17卷 1491-1499页

作者： Yingqiang Wu Jiao Zhang Jinli Liu Li Sheng Bo Zhang Limin Wang Siqi Shi Li Wang Hong Xu xiangming he Institute of Nuclear and New Energy Technology Tsinghua UniversityBeijing 100084China State Key Laboratory of Rare Earth Resource Utilization Changchun Institute of Applied ChemistryChinese Academy of Sciences(CAS)Changchun 130022China China National Quality Supervision and Inspection Center for Industrial Explosive Materials Nanjing University of Science and TechnologyNanjing 210094China School of Materials Science and Engineering Materials Genome InstituteShanghai UniversityShanghai 200444China

Propylene carbonate(PC)-based electrolytes have exhibited significant advantages in boosting the low-temperature discharging of graphite-based Li-ion ***,it is still unclear whether they can improve the charging property and suppress lithium *** this topic is challenging due to the problem of electrochemical *** overcome this issue,we introduced graphite with phase *** results show that the pouch-type full batteries using PC-based electrolyte exhibit steady performance over 500 cycles and can be reversibly charged over 30 times at-20℃ with an average Coulombic efficiency of 99.95%,while the corresponding value for the conventional ethylene carbonate(EC)-based electrolyte sample is only 31.20%.This indicates that the use of PC-based electrolyte significantly suppresses lithium plating during low-temperature *** further demonstrate that the improved performance is mainly attributed to the unique solvation structure,where PF-6more anions participate in solvation,leading to the formation of a stable F-rich solid state electrolyte interface on the graphite surface and a lower reduction tendency of Li+*** work inspires new ideas for the design of PC-based electrolytes for low-temperature charging and fast-charging batteries.

关键词： lithium-ion batteries graphite propylene carbonate low-temperature charging

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双光子光刻中感光材料的回顾与挑战(特邀)

中国激光 2024年第12期51卷 254-277页

作者：董芸何向明徐宏清华大学核能与新能源技术研究院北京100084

双光子光刻是一种自上而下的微纳制造技术,具有超越衍射极限的空间分辨率,并且可通过激光直写构建三维立体结构,在微电子器件、微纳光学、生物医药、超材料等领域中都有着难以取代的应用价值。随着应用场景的扩展,双光子光刻胶的发展亟... 详细信息

双光子光刻是一种自上而下的微纳制造技术,具有超越衍射极限的空间分辨率,并且可通过激光直写构建三维立体结构,在微电子器件、微纳光学、生物医药、超材料等领域中都有着难以取代的应用价值。随着应用场景的扩展,双光子光刻胶的发展亟须从聚合物材料扩展到无机、金属等多元材料体系。然而,如何利用引发剂的双光子吸收效应实现新材料的高效光致溶解性变化,以及如何开发新型光刻材料体系以实现更高的空间分辨率、刻写速率,仍是双光子光刻材料领域所面临的挑战。将从双光子感光材料的角度,回顾自由基型、阳离子型等双光子引发剂的分子设计和光敏特性,以及聚合物光刻胶和无机-有机复合光刻胶构建三维结构的策略和材料特点。通过对双光子感光材料中的材料体系、反应机理和引发剂体系的综述,以期为未来双光子光刻材料的选择和设计提供参考。

关键词：双光子光刻微纳制造三维微结构光刻胶光敏剂无机-有机杂化材料

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碳纤维复合材料高温界面性能研究进展

高分子材料科学与工程 2024年第3期40卷 163-171页

作者：王静李闯耿闻何相明周杰沈阳航空航天大学材料科学与工程学院辽宁沈阳110136

碳纤维复合材料以其强度高、耐腐蚀、质量轻、抗疲劳等优良特性被广泛应用于航空航天及国防军工领域。然而,航空航天用复合材料结构部件在高温、湿热环境中会发生界面损伤和失效。上浆剂是碳纤维复合材料界面相的重要组成部分,研制可以... 详细信息

碳纤维复合材料以其强度高、耐腐蚀、质量轻、抗疲劳等优良特性被广泛应用于航空航天及国防军工领域。然而,航空航天用复合材料结构部件在高温、湿热环境中会发生界面损伤和失效。上浆剂是碳纤维复合材料界面相的重要组成部分,研制可以增强界面强度和耐高温的上浆剂对提高复合材料的热力学性能具有重要意义。文中从碳纤维表面上浆剂的角度出发,重点介绍了碳纤维复合材料界面特性、上浆剂的作用机理以及高温下复合材料界面的破坏机制。最后,针对环氧上浆剂耐热性差的缺点,阐述了碳纤维耐高温涂层改性和纳米粒子改性,重点介绍了聚酰亚胺、聚醚醚酮、生物活性多巴胺及氧化石墨烯、多面体低聚倍半硅氧烷(POSS)纳米粒子等类型改性上浆剂的研究进展。指出发展环境友好型上浆剂和POSS纳米粒子改性将是下一步工作的重点。

关键词：上浆剂碳纤维复合材料界面性能高温

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论新时代美好生活观的理论特质

郑州轻工业大学学报（社会科学版） 2024年第4期25卷 1-8页

作者：何香明广州航海学院马克思主义学院广东广州510700

新时代美好生活是21世纪马克思主义的独特命题,是习近平新时代中国特色社会主义思想的重要内容,也是中国共产党人运用马克思主义表达和解决中国问题的重要理论成果。作为马克思主义理论与中国社会主义现代化建设实践的结合,新时代美好... 详细信息

新时代美好生活是21世纪马克思主义的独特命题,是习近平新时代中国特色社会主义思想的重要内容,也是中国共产党人运用马克思主义表达和解决中国问题的重要理论成果。作为马克思主义理论与中国社会主义现代化建设实践的结合,新时代美好生活观呈现出马克思主义哲学形态的理论性与现实性统一、实践主体的党性与人民性统一、实现方式的资本性与劳动性统一、实践模式的世界性与民族性统一等理论特质,丰富和发展了马克思主义。

关键词：新时代美好生活观 21世纪马克思主义理论特质

Polyimides as Promising Materials for Lithium-Ion Batteries:A Review

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Nano-Micro Letters 2023年第9期15卷 74-102页

作者： Mengyun Zhang Li Wang Hong Xu Youzhi Song xiangming he Institute of Nuclear and New Energy Technology Tsinghua UniversityBeijing 100084People’s Republic of China

Lithium-ion batteries(LIBs)have helped revolutionize the modern world and are now advancing the alternative energy *** technical challenges are associated with LIBs,such as increasing their energy density,improving their safety,and prolonging their *** by these issues,researchers are striving to find effective solutions and new materials for next-generation *** play a more and more important role in satisfying the ever-increasing requirements for ***(PIs),a special functional polymer,possess unparalleled advantages,such as excellent mechanical strength,extremely high thermal stability,and excellent chemical inertness;they are a promising material for ***,we discuss the current applications of PIs in LIBs,including coatings,separators,binders,solid-state polymer electrolytes,and active storage materials,to improve high-voltage performance,safety,cyclability,flexibility,and *** technical challenges are described,and strategies for solving current issues are ***,potential directions for implementing PIs in LIBs are outlined.

关键词： Polyimides Separators Binders Solid-state electrolytes Lithium-ion

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单晶高镍三元正极材料的合成及改性

化学进展 2024年第6期36卷 827-839页

作者：吴涵锋邓久帅刘晋利吴英强王莉何向明中国矿业大学(北京)化学与环境工程学院北京100083 清华大学核能与新能源技术研究院北京100084 南京理工大学材料学院南京210094 海南大学材料学院海口570228

随着便携式电子产品、电动汽车领域的快速发展,高能量密度锂离子电池的需求度正在日益增加。镍含量在0.6(含)以上的高镍三元材料体系(如LiNi_(0.6)Co_(0.2)Mn_(0.2)O_(2),LiNi_(0.8)Co_(0.1)Mn_(0.1)O_(2)和LiNi_(0.9)Co_(0.05)Mn_(0.05)O_(2))在截止电压为4.3 V(vs Li+/Li)的条件下,可逆比容量超过200 m Ah·g^(-1),是高比容量正极的重要发展方向。然而,多晶三元材料的机械强度和压实密度较低,且颗粒中的一次晶粒间存在各向异性,导致在充放电过程中会在多晶颗粒内产生晶间裂纹,电解液会沿晶间裂纹向颗粒内部渗透,从而加剧电极-电解液副反应、恶化电池的循环性能和安全性能。采用无晶界的单晶结构设计可以减少晶间裂纹的形成、抑制界面副反应和提高循环稳定性。本文将对单晶高镍三元材料的优势与存在问题进行综述,并对其合成方法和改性策略进行分析,最后,对单晶高镍三元材料的应用前景与面临的挑战进行评述与展望。

关键词：锂离子电池高镍三元正极材料单晶多晶

Tailoring Practically Accessible Polymer/Inorganic Composite Electrolytes for All-Solid-State Lithium Metal Batteries:A Review

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Nano-Micro Letters 2023年第3期15卷 266-297页

作者： Hongmei Liang Li Wang Aiping Wang Youzhi Song Yanzhou Wu Yang Yang xiangming he Institute of Nuclear and New Energy Technology Tsinghua UniversityBeijing 100084People’s Republic of China

Solid-state electrolytes(SSEs)are widely considered the essential components for upcoming rechargeable lithium-ion batteries owing to the potential for great safety and energy *** them,polymer solid-state electrolytes(PSEs)are competitive candidates for replacing commercial liquid electrolytes due to their flexibility,shape versatility and easy *** the rapid development of PSEs,their practical application still faces obstacles including poor ionic conductivity,narrow electrochemical stable window and inferior mechanical ***/inorganic composite electrolytes(PIEs)formed by adding ceramic fillers in PSEs merge the benefits of PSEs and inorganic solid-state electrolytes(ISEs),exhibiting appreciable comprehensive properties due to the abundant interfaces with unique *** PIEs are highly compatible with high-voltage cathode and lithium metal anode,which offer desirable access to obtaining lithium metal batteries with high energy *** review elucidates the current issues and recent advances in *** performance of PIEs was remarkably influenced by the characteristics of the fillers including type,content,morphology,arrangement and surface *** focus on the molecular interaction between different components in the composite environment for designing high-performance ***,the obstacles and opportunities for creating high-performance PIEs are *** review aims to provide some theoretical guidance and direction for the development of PIEs.

关键词： Polymer Inorganic composite electrolytes All-solid-state lithium metal batteries Fillers Ionic conductivity High voltage