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Additives strategies to improving cycling stability of li metal batteries by modifying electrode electrolyte interphases

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Progress in Natural Science:Materials International 2024年第2期34卷 338-344页

作者： Yuan li Pengfei Huang Chunyu Cui Xiaoyuan Ma li Chen Zekun li linhai li Yuhong Tian School of Biological and Chemical Engineering Guangxi University of Science and Technology School of College of Chemistry and Chemical Engineering Hunan University Isky Future Energy Institute

li metal batteries（LMBs） have attracted much attention due to the ultra-high theoretical capacity of the li metal anode（LMA）.However,the uncontrollable dendrites growth and low coulombic efficiency hinder their practical ***,we explore 3,5-difluoropyridine（2F-BD） as a novel electrolyte additive to enable highperformance *** 2F-BD additive participates in and modifies the solvation structure of li ions by reducing the coordinated number of PF6-at the electrode surface,leading to the formation of a liF and li3N-rich solid electrolyte interphase（SEI）.The liF component increases the robustness of SEI and suppresses the formation of li dendrites,while the li3N component facilitates the transportation and reaction kinetics of li *** a result,the li‖li symmetric cell presents a stable cycling performance of up to 500 h at a current density of 1 mA *** coupling with liFePO4cathode,the obtained full cell achieves high specific capacities of 106.06 mA h g-1and 84.98 mA h g-1at 2.55 mA cm-2and 5.10 mA cm-2,respectively,and maintains a high capacity retention of84.0% after 1000 cycles at 0.13 mA cm-2,with an average cycling CE of 99.58%.

关键词： Electrolyte additive li dendrites li metal batteries liF and li3N-Rich electrode-electrolyte interphase liFePO4 cathode

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基于视差范围估计和改进代价的半全局匹配

系统工程与电子技术 2022年第2期44卷 394-400页

作者：彭妍郭君斌于传强李静波火箭军工程大学导弹工程学院陕西西安710025 中国人民解放军96873部队陕西宝鸡721000

针对传统半全局算法对视差范围内未知场景通常人为地设定一个视差范围造成计算资源浪费,同时利用传统Census变换进行代价计算限制视差精度的不足,提出了基于视差范围估计和改进代价的半全局匹配算法。首先,采用多种特征算子同时提取图... 详细信息

针对传统半全局算法对视差范围内未知场景通常人为地设定一个视差范围造成计算资源浪费,同时利用传统Census变换进行代价计算限制视差精度的不足,提出了基于视差范围估计和改进代价的半全局匹配算法。首先,采用多种特征算子同时提取图像对的特征点,通过快速最近邻搜索进行特征点匹配,利用立体匹配的约束条件筛选匹配点,计算匹配点对的视差值,估计视差范围;然后,在此基础上,分别对图像的亮度、梯度和边缘信息进行Census变换,构建新的代价计算函数。实验结果表明,与传统算法相比,改进算法的平均误匹配率降低了6.37%,计算时间缩短了95%以上。

关键词：立体匹配半全局匹配视差范围估计代价计算 Census变换

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人口规模、人口老龄化与经济增长

人口学刊 2023年第2期45卷 55-66页

作者：李竞博姜全保首都经济贸易大学劳动经济学院北京100070 西安交通大学公共政策与管理学院陕西西安710049

中国人口规模已经进入负增长阶段,人口老龄化程度逐渐加深,对经济增长产生了深远影响。本文使用1991-2020年省级数据,利用面板门槛效应模型研究人口规模、人口老龄化与经济增长数量和经济增长质量之间的关系。研究发现:在考虑实际经济... 详细信息

中国人口规模已经进入负增长阶段,人口老龄化程度逐渐加深,对经济增长产生了深远影响。本文使用1991-2020年省级数据,利用面板门槛效应模型研究人口规模、人口老龄化与经济增长数量和经济增长质量之间的关系。研究发现:在考虑实际经济运行的条件下,以人口老龄化作为门槛变量,人口规模对经济增长效率的影响为负,且人口规模扩大或缩小对经济增长质量的影响强于对经济增长数量的影响,而人口规模对经济增长数量的影响为正;在人口规模变动的情况下,人口老龄化与经济增长数量和经济增长质量均呈“U”型的关系。在生育政策调整的情况下,还需要依靠技术创新、产业结构升级、人力资本投资、资本集聚、开放对外市场等途径实现经济高质量发展。扩大人口规模有助于经济增长数量的提高,但规模扩张却不利于实现效率优先的发展目标,即不利于经济高质量发展。同时,在人口规模巨大优势的情况下,人口老龄化并不是不利于社会经济发展的结果变量,在人口老龄化不断深化并不可逆转的背景下,如何利用仍然规模巨大的劳动年龄人口,提高劳动力资源与其他生产要素的配置效率是保证经济增长的基本路径之一。

关键词：人口规模人口老龄化经济增长数量经济增长质量

SEI/dead li-turning capacity loss for high-performance anode-free solid-state lithium batteries

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Journal of Energy Chemistry 2024年第9期96卷 145-152页

作者： Qianwen Yin Tianyu li Hongzhang Zhang Guiming Zhong Xiaofei Yang Xianfeng li Division of Energy Storage Dalian National Laboratory for Clean EnergyDalian Institute of Chemical PhysicsChinese Academy of SciencesDalian 116023LiaoningChina University of Chinese Academy of Sciences Beijing 100049China Key Laboratory of Long-Duration and Large-Scale Energy Storage Dalian Institute of Chemical PhysicsChinese Academy of SciencesDalian 116023LiaoningChina Laboratory of Advanced Spectro-Electrochemistry and lithium-Ion Batteries Dalian National Laboratory for Clean EnergyDalian Institute of Chemical PhysicsChinese Academy of SciencesDalian 116023LiaoningChina

Anode-free solid-state lithium metal batteries(AF-SSLBs)have the potential to deliver higher energy density and improved safety beyond lithium-metal ***,the unclear mechanism for the fast capacity decay in AF-SSLBs,either determined by dead li or solid electrolyte interface(SEI),limits the proposal of effective strategies to prolong cycling *** clarify the underlying mechanism,herein,the evolution of SEI and dead li is quantitatively analyzed by a solid-state nuclear magnetic resonance(ss-NMR)technology in a typical liPF6-based polymer *** results show that the initial capacity loss is attributed to the formation of SEI,while the dead li dominates the following capacity loss and the growth rate is 0.141 mA h cm^(−2)cycle−*** reduce the active li loss,the combination of inorganic-rich SEI and self-healing electrostatic shield effect is proposed to improve the reversibility of li deposition/dissolution behavior,which reduces the capacity loss rate for the initial SEI and following dead li generation by 2.3 and 20.1 folds,*** a result,the initial Coulombic efficiency(ICE)and stable CE increase by 15.1%and 15.3%in li-Cu cells,which guides the rational design of high-performance AF-SSLBs.

关键词： Solid-state lithium batteries Solid-state NMR Anode-free SEI Dead li

Egg white peptides increase the supplementation of amino acids in vivo in inflammation period and show a positive effect on the intestinal barrier in childhood

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Food Science and Human Wellness 2024年

作者： Qi Yang jingbo liu Siwen Lyu Ting li Xuanting liu Zhiyang Du Xiaomin Shang Ting Zhang Huifang Ge Chunyu Xi Jilin Provincial Key Laboratory of Nutrition and Functional Food Jilin University College of Food Science and Engineering Jilin University State Key Laboratory of Tea Plant Biology and Utilization School of Tea and Food Sciences and Technology Anhui Agricultural University

Bioactive peptides have various excellent biological activities and serve as functional foods to prevent chronic diseases in the human body. This article investigated the regulatory effect of egg white peptides (EPs) on the intestine barrier of young mice with colitis. The results showed that the intake of EPs could protect the intestines from inflammation damage. Besides， the expression of tight junction (TJ) proteins and mucin is upregulated. Markedly， the intake of EPs can increase the concentration of amino acids in the serum of young mice， which is crucial for nutritional supplementation during intestinal inflammation process. Proteomics analysis implied that EPs can regulate protein expression in the intestine， involving multiple inflammatory pathways including PI3K-AKT and MAPK signaling pathway. This demonstrated the health benefits of bioactive peptides and provides a theoretical basis for the development of animal derived proteins as functional foods.

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平原河湖地区乡村空间的半网络活力结构模式研究

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华中农业大学学报 2022年第3期41卷 20-26页

作者：李静波张博杨昌新华中农业大学园艺林学学院武汉430070 华中农业大学乡村规划设计研究院武汉430070 福建工程学院建筑与城乡规划学院福州350118

快速城镇化时期,人口收缩的乡村空间结构变得越发单一化、线型化,从而导致结构可承载的社会交往活力降低,难以满足乡村振兴背景下乡村空间社会、经济、文化可持续发展的需求。本研究借鉴空间活力结构的相关理论与方法,识别传统乡村空间... 详细信息

快速城镇化时期,人口收缩的乡村空间结构变得越发单一化、线型化,从而导致结构可承载的社会交往活力降低,难以满足乡村振兴背景下乡村空间社会、经济、文化可持续发展的需求。本研究借鉴空间活力结构的相关理论与方法,识别传统乡村空间的活力结构类型,发现传统乡村具有节点众多、层间交叠、中度关联的半网络特征,以此构建激发乡村活力的半网络结构模式,并利用该模式通过完善节点构造、巧设跨级交叠、实现中度关联等方式重塑三产融合示范村的结构活力。希冀半网络活力结构模式能推动平原河湖地区的乡村振兴建设。

关键词：活力结构半网络平原河湖乡村空间结构乡村振兴

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Synergy effect of regulated li-plating and functional solid electrolyte interphase on graphite anodes

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Nano Research 2024年第9期17卷 8077-8085页

作者： Panpan Wang Baojia Xia Jianling li State Key Laboratory of Advanced Metallurgy University of Science and Technology BeijingBeijing 100083China Shanghai Institute of Microsystem and Information Technology Chinese Academy of SciencesShanghai 201800China

The growth of li dendrites poses potential safety hazard to lithium-ion batteries(liBs),and eliminating li dendrites thoroughly stills face tough difficulties ***,regulating li-plating is a critical optimization-direction to address the ***,a“graphite-li hybrid”anode with high reversibility is realized under the constant-capacity lithiation(CCL).Within CCL,the uniform distribution of li-plating on the graphite surface is successfully *** evolution in different states of solid electrolyte interphase(SEI)is investigated in detail to study the interaction between the potentials and impedance during the process of liintercalation and *** the potential below 0 V and the state of charge(SOC)of 110%relative to the theoretical capacity,the F-rich SEI with high stability is constructed to hinder the emergency of li dendrites and maintain the intact structure of graphite anode under long *** cell presents more than 100%Coulombic efficiency(CE)with the 900 cycles,demonstrating the reversible li-plating and the utilization of *** the CCL half-cell provides a good cycling performance and specific capacity of 900 cycles at 0.5 C,it is attributed to the synergy effect of stable inorganic-rich SEI and regulated active li-plating.

关键词： "graphite-li hybrid"anode li-plating reversibility solid electrolyte interphase(SEI)

Erratum to:Carrier-driven magnetic and topological phase transitions in twodimensionalⅢ-Ⅴsemiconductors

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Nano Research 2023年第2期16卷 3604-3604页

作者： Yan li Xinru Ma Hongwei Bao Jian Zhou Fei Ma jingbo li State Key Laboratory for Mechanical Behavior of Materials Xi’an Jiaotong UniversityXi’an 710049China Center for Alloy Innovation and Design Xi’an Jiaotong UniversityXi’an 710049China Institute of Semiconductors South China Normal UniversityGuangzhou 510631China

The E-mail address of one corresponding author was unfortunately mistakenly *** error did not affect any of the conclusions from the published *** of Address correspondence to Jian Zhou,zhoujian@***;Fei Ma,mafei@***;J... 详细信息

关键词： transitions phase magnetic

Highly-chlorinated inert and robust interphase without mineralization of oxide enhancing high-rate li metal batteries

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Chinese Chemical Letters 2024年第6期35卷 239-243页

作者： Long li Kang Yang Chenpeng Xi Mengchao li Borong li Gui Xu Yuanbin Xiao Xiancai Cui Zhiliang liu lingyun li Yan Yu Chengkai Yang Key Laboratory of Advanced Materials Technologies International(HongKong Macao and Taiwan)Joint Laboratory on Advanced Materials TechnologiesSchool of Materials Science and EngineeringFuzhou UniversityFuzhou 350108China College of Material Sciences and Chemical Engineering Harbin Engineering UniversityHarbin 150001China

Side reactions and dendrite growth triggered by the unstable interface and inhomogeneous deposition have become the biggest obstacle to the commercialization for lithium metal *** this study,a highly-chlorinated organic-inorganic hybrid interfacial protective layer is developed by rationally tuning the interfacial passivation and robustness to achieve the convenient and efficient li metal *** polyvinyl chloride(PVC)can effectively resist water and oxygen,which is confirmed by density functional *** organic-dominant solid electrolyte interphases(SEI)with lithium chloride are investigated by the X-ray photoelectron spectroscopy(XPS)with little mineralization of oxide,such as li_(2)O and li_(2)CO_(3).With such artificial SEI,a uniform and dense lithium deposition morphology are formed and an ultra-long stable cycle of over 500 h are achieved even at an ultra-high current density of 10 m A/cm^(2).Moreover,the simple and convenient protected anode also exhibits excellent battery stability when paired with the liNi_(0.8)Co_(0.1)Mn_(0.1)O_(2)(NCM811)and liFePO_(4)(LFP)cathode,showing great potential for the commercial application of lithium metal batteries.

关键词： Highly-chlorinated Water/oxygen resistance Stable interphase Dendrite-free lithium metal batteries High-rate

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