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CCS Chemistry 2024年第3期6卷 749-760页

作者： Junkai Yang Jixing Yang yunhua xu Yuesheng Li School of Materials Science and Engineering Tianjin Key Laboratory of Composite and Functional MaterialsTianjin UniversityTianjin 300350

Conducting polymers(CPs)have long been studied as cathode materials for lithium-ion batteries,but the low doping level(maximum:30–50%or even lower)and poor cycling stability limit their ***,we have developed a method of nanoporeconfined in situ electropolymerization to prepare nanostructured polythiophene-type porous cathodes,achieving significantly improved doping availability and long cycle *** was verified that the nanosized polymer formed in situ and loose porous structure are conducive to the doping reaction and maintain high electrochemical *** constructed thieno[3,2-b]thiophene(TtTP)/active carbon cathode delivers an ultrahigh reversible capacity of 309.2 mAh g^(−1)(doping level up to 80.9%)along with an ultrahigh energy density of 1252.3 Wh Kg^(−1),and an ultrahigh rate capability(172.4 mAh g^(−1) at 30 A g^(−1)),which far exceed all the CPs and even all the p-type organic cathode materials ***,an excellent long cycle life of 2000 cycles at 5 A g^(−1) is also revealed,which is a new record for CPs-based cathode materials in nonaqueous lithium-ion *** method provides an effective strategy to improve the doping level and cycling stability of CP-based cathode materials.

关键词： organic cathode materials conducting polymers lithium-ion batteries porous carbon in situ electropolymerization

In-situ coupling construction of interface bridge to enhance electrochemical stability of all solid-state lithium metal batteries

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Journal of Energy Chemistry 2024年第2期89卷 18-26,I0003页

作者： Qianwei Zhang Rong Yang Chao Li Lei Mao Bohai Wang Meng Luo Yinglin Yan Yiming Zou Lisheng Zhong yunhua xu International Research Center for Composite and Intelligent Manufacturing Technology Institute of Chemical Power SourcesXi’an University of TechnologyXi’an 710048ShaanxiChina School of Materials Science and Engineering Xi’an University of TechnologyXi’an 710048ShaanxiChina School of Electrical Engineering Xi’an University of TechnologyXi’an 710048ShaanxiChina Yulin University Yulin 719000ShaanxiChina

Polymer-based composite electrolytes composed of three-dimensional Li_(6.4)La_(3)Zr_(2)Al_(0.2)O_(12)(3D-LLZAO)have attracted increasing attention due to their continuous ion conduction and satisfactory mechanical ***,the organic/inorganic interface is incompatible,resulting in slow lithium-ion transport at the ***,the compatibility of organic/inorganic interface is an urgent problem to be *** by the concept of“gecko eaves”,polymer-based composite solid electrolytes with dense interface structures were *** bridging of organic/inorganic interfaces was established by introducing silane coupling agent(3-chloropropyl)trimethoxysilane(CTMS)into the PEO-3D-LLZAO(PL)*** in-situ coupling reaction improves the interface affinity,strengthens the organic/inorganic interaction,reduces the interface resistance,and thus achieves an efficient interface ion transport *** prepared PEO-3D-LLZAO-CTMS(PLC)electrolyte exhibits enhanced ionic conductivity of 6.04×10^(-4)S cm^(-1)and high ion migration number(0.61)at 60℃and broadens the electrochemical window(5.1 V).At the same time,the PLC electrolyte has good thermal stability and high mechanical ***,the Li Fe PO_(4)|PLC|Li battery has excellent rate performance and cycling stability with a capacity decay rate of 2.2%after 100 cycles at 60℃and 0.1 *** advantages of PLC membranes indicate that this design approach is indeed practical,and the in-situ coupling method provides a new approach to address interface compatibility issues.

关键词： Organic/inorganic interphase Coupling effect Composite electrolyte Interface compatibility

Boosting cycling stability by regulating surface oxygen vacancies of LNMO by rapid calcination

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Nano Research 2024年第4期17卷 2671-2677页

作者： Haoran Jiang Cuihua Zeng Wei Zhu Jiawei Luo Zhedong Liu Jingchao Zhang Rui Liu yunhua xu Yanan Chen Wenbin Hu School of Materials Science and Engineering Tianjin UniversityTianjin 300072China School of Materials Science and Engineering Shandong University of Science and TechnologyQingdao 266590China

Spinel LiNi_(0.5-x)Mn_(1.5+x)O_(4)(LNMO)has attracted intensive interest for lithium-ion battery due to its high voltage and high energy ***,severe capacity fade attributed to unstable surface structure has hampered its *** vacancies(OVs)tend to occur in the surface of the material and lead to surface structure reconstruction,which deteriorates the battery performance during electrochemical ***,we utilize high-temperature-shock(HTS)method to synthesize LNMO materials with fewer surface *** calcination drives lower surface OVs concentration,reducing the content of Mn^(3+)and surface reconstruction layers,which is beneficial to obtain a stable crystal *** LNMO material synthesized by HTS method delivers an initial capacity of 127 mAh·g^(-1) at 0.1 C and capacity retention of 81.6%after 300 cycles at 1 C,and exhibits excellent performance at low temperature.

关键词： ultrafast synthesis oxygen vacancy LiNi_(0.5-x)Mn_(1.5+x)O_(4)(LNMO)cathode high-temperature-shock lithium-ion batteries

A Review on Engineering Transition Metal Compound Catalysts to Accelerate the Redox Kinetics of Sulfur Cathodes for Lithium–Sulfur Batteries

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Nano-Micro Letters 2024年第5期16卷 300-332页

作者： Liping Chen Guiqiang Cao Yong Li Guannan Zu Ruixian Duan Yang Bai Kaiyu xue Yonghong Fu yunhua xu Juan Wang Xifei Li Shaanxi Key Laboratory of Nanomaterials and Nanotechnology Xi’an University of Architecture and TechnologyXi’an 710055People’s Republic of China Institute of Advanced Electrochemical Energy and School of Materials Science and Engineering Xi’an University of TechnologyXi’an 710048People’s Republic of China Yulin University Yulin 719000People’s Republic of China School of Materials Science and Engineering Fuzhou UniversityFuzhou 350108People’s Republic of China

Engineering transition metal compounds(TMCs)catalysts with excellent adsorption-catalytic ability has been one of the most effec-tive strategies to accelerate the redox kinetics of sulfur ***,this review focuses on engineering TMCs catalysts by cation doping/anion doping/dual doping,bimetallic/bi-anionic TMCs,and TMCs-based heterostructure *** is obvious that introducing cations/anions to TMCs or constructing heterostructure can boost adsorption-catalytic capacity by regulating the electronic structure including energy band,d/p-band center,electron filling,and valence ***,the elec-tronic structure of doped/dual-ionic TMCs are adjusted by inducing ions with different electronegativity,electron filling,and ion radius,resulting in electron redistribution,bonds reconstruction,induced vacancies due to the electronic interaction and changed crystal structure such as lat-tice spacing and lattice *** from the aforementioned two strategies,heterostructures are constructed by two types of TMCs with different Fermi energy levels,which causes built-in electric field and electrons transfer through the interface,and induces electron redistribution and arranged local atoms to regulate the electronic ***,the lacking studies of the three strategies to comprehensively regulate electronic structure for improving catalytic performance are pointed *** is believed that this review can guide the design of advanced TMCs catalysts for boosting redox of lithium sulfur batteries.

关键词： Lithium–sulfur battery Redox kinetic Transition metal compounds catalyst Multiple metals/anions

Traffic anomaly detection algorithm for CAN bus using similarity analysis Chao Wang,xueqiao xu∗,Ke Xiao,yunhua He,Guangcan Yang School of Information Science and Technology,Traffic anomaly detection algorithm for CAN bus using similarity analysis

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High-Confidence Computing 2024年第3期4卷 64-74页

作者： Chao Wang xueqiao xu Ke Xiao yunhua He Guangcan Yang School of Information Science and Technology North China University of TechnologyBeijing 100144North China University of TechnologyBeijing 100144

Recently,vehicles have experienced a rise in networking and informatization,leading to increased security *** the most widely used automotive bus network,the Controller Area Network(CAN)bus is vulnerable to attacks,as security was not considered in its original *** paper proposes SIDuBzip2,a traffic anomaly detection method for the CAN bus based on the bzip2 compression *** proposed method utilizes the pseudo-periodic characteristics of CAN bus traffic,constructing time series of CAN IDs and calculating the similarity between adjacent time series to identify abnormal *** method consists of three parts:the conversion of CAN ID values to characters,the calculation of similarity based on bzip2 compression,and the optimal solution of model *** experimental results demonstrate that the proposed SIDuBzip2 method effectively detects various attacks,including Denial of Service,replay,basic injection,mixed injection,and suppression *** addition,existing CAN bus traffic anomaly detection methods are compared with the proposed method in terms of performance and delay,demonstrating the feasibility of the proposed method.

关键词： Automotive safety CAN bus Anomaly detection

转移性结直肠癌抗EGFR治疗耐药机制研究进展

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中国普通外科杂志 2024年第6期33卷 996-1011页

作者：徐昆明许云华陈锡光付广黄秋林肖帅南华大学附属第一医院胃肠外科湖南衡阳421001 南华大学附属第一医院肿瘤疾病研究所湖南衡阳421001

转移性结直肠癌(mCRC)是结直肠癌进展的晚期阶段,治疗选择多样,但患者预后通常不佳。表皮生长因子受体(EGFR)信号通路在mCRC的发展中扮演核心角色,涉及多个关键分子。EGFR异常活化与肿瘤生长、转移及治疗耐药紧密相关。因此,EGFR靶向治... 详细信息

转移性结直肠癌(mCRC)是结直肠癌进展的晚期阶段,治疗选择多样,但患者预后通常不佳。表皮生长因子受体(EGFR)信号通路在mCRC的发展中扮演核心角色,涉及多个关键分子。EGFR异常活化与肿瘤生长、转移及治疗耐药紧密相关。因此,EGFR靶向治疗对mCRC至关重要,但治疗耐药常常导致治疗失败,且分子机制复杂。在此,笔者综述mCRC抗EGFR治疗耐药的相关分子机制及干预研究进展,为深入理解抗EGFR耐药机制,优化治疗策略提供参考。

关键词：结直肠肿瘤肿瘤转移 ErbB受体分子靶向治疗抗药性,肿瘤综述

氯取代近红外双缆共轭高分子材料与低能量损失单组分有机太阳能电池

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物理化学学报 2024年第8期40卷 28-35页

作者：李若男梁世洁许韵华张翠芬唐正刘柏侨李韦伟北京交通大学物理科学与工程学院北京100044 北京化工大学有机无机复合材料国家重点实验室北京100029 之江实验室智能芯片与器件研究中心杭州311121 东华大学先进低维材料中心上海201620

近红外型双缆共轭高分子材料的光电转换效率(PCE)已经超过了10%,然而较大的能量损失限制了其性能的进一步提升。本工作中,我们合成了两个氯取代的近红外双缆共轭聚合物材料,分别命名为as-DCPIC-Cl和as-DCPIC-2Cl。氯原子的引入使得单组... 详细信息

近红外型双缆共轭高分子材料的光电转换效率(PCE)已经超过了10%,然而较大的能量损失限制了其性能的进一步提升。本工作中,我们合成了两个氯取代的近红外双缆共轭聚合物材料,分别命名为as-DCPIC-Cl和as-DCPIC-2Cl。氯原子的引入使得单组分有机太阳能电池的能量损失低至0.57 eV。其中,基于as-DCPIC-Cl的器件实现了10.14%的PCE,为基于非稠环电子受体的双缆共轭聚合物的最高性能。研究表明,氯原子在实现高性能单组分有机太阳能电池方面具有重要的作用。

关键词：双缆共轭高分子单组分有机太阳能电池近红外能量损失

Synthesis and electrochemical properties of Li_2MnSiO_4/C nanoparticles via polyol process

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Rare Metals 2010年第5期29卷 511-514页

作者： LIU Wengang xu yunhua YANG Rong School of Material Science and Engineering Xi 'an University of Architecture and Technology Xi 'an 710055 China School of Science Xi 'an University of Technology Xi 'an 710048 China

Carbon-coated lithium manganese silicate （Li2MnSiO4/C） nanoparticles were synthesized by polyol process. X-ray diffraction （XRD） patterns of the obtained materials exhibit a good fit with that of the Li2MnSiO4 phase. Field emission scanning electron microscopy （FESEM） images of the obtained samples show that the particle size is only tens of nanometers. The high resolution transmission electron microscopy （HRTEM） analysis shows that the Li2MnSiO4 nanoparticles are surrounded by a very thin film of amorphous carbon. The composite prepared through polyol process shows good performance as cathode materials in lithium cells at room temperature. The charge capacity of the Li2MnSiO4/C samples is 219 mAh/g （about 1.3 Li^＋ per unit formula extracted）, and the discharge capacity is 132 mAh/g （about 0.8 Li^＋ per unit formula inserted） in the first cycle in the voltage range of 1.5-4.8 V. A good capacity cycling maintenance of 81.8% after 10 cycles was obtained.

关键词： lithium ion batteries cathode materials electrochemical properties polyol process silicates

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数据赋能关键核心技术突破的内在机理研究

合肥工业大学学报（社会科学版） 2024年第1期38卷 43-56页

作者：许云华陈璐李博安徽财经大学工商管理学院安徽蚌埠233030

随着数字经济在各领域的不断渗透,数据赋能在高新技术产业的发展中起着至关重要的作用。本文基于组织创新壁垒瓦解的视角,通过对我国某玻璃新材料设计龙头企业从技术跟随到技术领跑的研发技术的数据赋能过程展开案例研究,并构建了数据... 详细信息

随着数字经济在各领域的不断渗透,数据赋能在高新技术产业的发展中起着至关重要的作用。本文基于组织创新壁垒瓦解的视角,通过对我国某玻璃新材料设计龙头企业从技术跟随到技术领跑的研发技术的数据赋能过程展开案例研究,并构建了数据赋能关键核心技术突破的整合性理论模型。研究结果发现,数据赋能关键核心技术突破遵循着“数据系统搭建-组织创新实现-数据能力激活-关键核心技术突破”的内在机理路径,同时需要根据技术发展的不同阶段,整合相应的数据资源和数据能力来发挥数据的赋能作用。研究基于组织创新壁垒瓦解视角数据赋能的内在机理进行研究,丰富了关键核心技术突破在大数据情境中的新解读,对指导企业利用数据攻克关键核心技术具有重要的启示功能。

关键词：数据赋能组织创新关键核心技术突破案例研究

用于集成型光电检测系统的高性能平面微型超级电容器阵列

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Science China Materials 2024年第7期67卷 2169-2181页

作者：陈子璇闫长媛党纤曦王洋洋许运华邓先宇 Shenzhen Key Laboratory of Advanced Materials School of Materials Science and EngineeringHarbin Institute of TechnologyShenzhen 518055China School of Materials Science and Engineering Tianjin UniversityTianjin 300072China

薄膜微电容(TF-MSC)因其适合作为能量存储设备,集成在个人健康监测或实时环境检测等便携式电子产品中,而引起了越来越多的关注.然而,能量存储单元和检测单元的不同制造方式使得此类集成器件的制备变得复杂,同时也给材料的选择带来限制.... 详细信息

薄膜微电容(TF-MSC)因其适合作为能量存储设备,集成在个人健康监测或实时环境检测等便携式电子产品中,而引起了越来越多的关注.然而,能量存储单元和检测单元的不同制造方式使得此类集成器件的制备变得复杂,同时也给材料的选择带来限制.为了打破这一限制,本文基于可同时应用于储能和可见光检测的Sb_(2)S_(3)多功能薄膜,制备了由叉指型TF-MSC阵列驱动的集成型光电检测装置.TF-MSC以原位沉积的Sb_(2)S_(3)@聚苯胺(PANI)薄膜作为负极,活性炭作为正极,在0.25 mA cm^(−2)下的电容值为18.44 mF cm^(−2),且在1 mA cm^(−2)下经7000次充放电循环后仍可保持97%的比电容.由于Sb_(2)S_(3)@PANI薄膜的可扩展和可编辑性,由多个TF-MSC面内集成的TF-MSC阵列,表现出成倍增加的储能能力和广泛的应用潜力.与TF-MSC阵列集成在同一基底上的垂直或横向Sb_(2)S_(3)光电探测器,在较宽的光强度范围下可获得快速响应.因此,这种多功能集成器件在便携式监控设备中具有广泛的应用前景.

关键词： thin-film supercapacitors micro-supercapacitor ar-rays integrated devices self-powered photo-detecting systems