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Boosting Li-ion storage kinetics via constructing layered TiO2 anode

PARTICUOLOGY 2024年第10期93卷 22-29页

作者： Hou, Jiyue Wang, Fei zhang, Enfeng Wang, Ying Dong, Peng Wang, Yunxiao zhang, yiyong Li, Xue zhang, Yingjie Kunming Univ Sci & Technol Fac Met & Energy Engn Natl & Local Joint Engn Res Ctr Lithium ion Batter Kunming 650093 Peoples R China Panzhihua Univ Coll Elect Informat Engn Panzhihua 617000 Peoples R China Univ Wollongong Australian Inst Innovat Mat Inst Superconducting & Elect Mat Innovat Campus Squires Way Wollongong NSW 2500 Australia

Due to the typical intercalation-deintercalation mechanism, TiO 2 holds great promise as a sustainable anode for next-generation lithium -ion batteries (LIBs). However, commercial TiO 2 (C-TiO 2 ) is granular and shows slow ionic conductivity, which greatly hinders its development due to sluggish kinetics, leading to low reversible capacity and inferior rate capability. In this study, a two-dimensional layered TiO 2 (L-TiO 2 ) anode is prepared via a one-step calcination process, which can effectively shorten the lithium ions diffusion path and improve its lithium ions conductivity. We elucidated the enhanced electrochemical performance of L-TiO 2 as an anode in LIBs through pseudocapacitive acceleration of lithium ions intercalation and deintercalation using various characterization techniques, including different scan rate cyclic voltammetry tests, in situ electrochemical impedance spectroscopy, in situ Raman spectroscopy, and in situ X-ray diffraction. In comparison to C-TiO 2 material, L-TiO 2 material showcases remarkable electrochemical performance, achieving a capacity of 166 mAh/g after 100 cycles at 0.1 C. Additionally, the lithium -ion diffusion coef ficient calculated for the L-TiO 2 is two orders of magnitude greater, underscoring its potential as a negative electrode material for LIBs. (c) 2024 Chinese Society of Particuology and Institute of Process Engineering, Chinese Academy of Sciences. Published by Elsevier B.V. All rights are reserved, including those for text and data mining, AI training, and similar technologies.

关键词： Lithium-ion batteries Anode MXene LayeredTiO2 ELECTROCHEMICAL PROPERTIES ANATASE TIO2 LITHIUM NANOPARTICLE PERFORMANCE

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Reinforced Lewis covalent bond by twinborn nitride heterostructure for lithium-sulfur batteries

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Journal of Energy Chemistry 2024年第1期88卷 363-372,I0009页

作者： Yaochen Song Pengkai Tang Yanjie Wang Yi Wang Linnan Bi Qi Liang Liang He Qingyu Xie yiyong zhang Peng Dong Yingjie zhang Yao Yao Jiaxuan Liao Sizhe Wang Yangtze Delta Region Institute(QuZhou) University of Electronic Science and Technology of ChinaQinzhou 324000ZhejiangChina School of Materials and Energy University of Electronic Science and Technology of ChinaChengdu 611731SichuanChina National and Local Joint Engineering Laboratory for Lithium-ion Batteries and Materials Preparation Technology Key Laboratory of Advanced Battery Materials of Yunnan ProvinceFaculty of Metallurgical and Energy EngineeringKunming University of Science and TechnologyKunming 650093YunnanChina School of Materials Science and Engineering Shaanxi Key Laboratory of Green Preparation and Functionalization for Inorganic MaterialsShaanxi University of Science&TechnologyXi’an 710021ShaanxiChina School of Environmental Science and Engineering North China Electric Power UniversityBaoding 071003HebeiChina

The practical application of lithium-sulfur(Li-S)batteries,as promising next-generation batteries,is hindered by their shuttle effect and the slow redox ***,a tungsten and molybdenum nitride heterostructure functionalized with hollow metal-organic framework-derived carbon(W_(2)N/Mo_(2)N)was proposed as the sulfur *** hollow spherical structure provides storage space for sulfur,enhances electrical conductivity,and inhibits volume *** metal atoms in the nitrides bonded with lithium polysulfides(Li PSs)through Lewis covalent bonds,enhancing the high catalytic activity of the nitrides and effectively reducing the energy barrier of Li PSs redox ***,the high intrinsic conductivity of nitrides and the ability of the heterostructure interface to accelerate electron/ion transport improved the Li+*** leveraging the combined properties of strong adsorption and high catalytic activity,the sulfur host effectively inhibited the shuttle effect and accelerated the redox kinetics of Li ***-efficiency Li+transmission,strong adsorption,and the efficient catalytic conversion activities of Li PSs in the heterostructure were experimentally and theoretically *** results indicate that the W_(2)N/Mo_(2)N cathode provides stable,and long-term cycling(over 2000 cycles)at 3 C with a low attenuation rate of 0.0196%per *** design strategy of a twinborn nitride heterostructure thus provides a functionalized solution for advanced Li-S batteries.

关键词： Heterostructure Adsorption Redox kinetics

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铱及铱合金涂层的研究现状与展望

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稀有金属 2024年第4期48卷 575-594页

作者：方镇王鑫张毅勇王浩旭金国胡振峰哈尔滨工程大学材料科学与化学工程学院黑龙江哈尔滨150001 军事科学院国防科技创新研究院北京100071

铱(Ir)是一种超高温抗氧化材料,其不但熔点高、硬度大,而且在高温下具有极强的稳定性和极低的氧渗透率。所以,Ir涂层被广泛地应用于碳基材料与难熔金属的高温防护方向,在航天领域的应用前景十分广阔。首先介绍了Ir涂层的多种制备技术,... 详细信息

铱(Ir)是一种超高温抗氧化材料,其不但熔点高、硬度大,而且在高温下具有极强的稳定性和极低的氧渗透率。所以,Ir涂层被广泛地应用于碳基材料与难熔金属的高温防护方向,在航天领域的应用前景十分广阔。首先介绍了Ir涂层的多种制备技术,对其中的几种重点制备技术进行了详细介绍,论述了不同制备技术的优缺点,介绍了制备技术的组合以及改进方式。并且对不同制备技术和不同制备条件下所制得Ir涂层的晶体微观结构进行了介绍,并论述了微观结构对涂层性能方面的影响,包括涂层的力学性能以及抗氧化性能等,最后总结了微观结构对涂层性能的影响规律。由于纯Ir涂层存在不足之处,介绍了应用表面合金化制备出的Ir合金涂层,并重点介绍了Ir-Al,Ir-Hf,Ir-Hf-Al和Ir-Hf-Zr等合金体系的性能和规律,探讨了未来多元Ir合金涂层的应用发展趋势。最后,对Ir及Ir合金涂层的研究进行了展望。

关键词：铱铱合金涂层熔盐电沉积

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船舶动力舱电容型感烟探测器的设计

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兵工学报 2024年第9期45卷 3230-3239页

作者：王博强赵学增张义勇王卓刚宋子刚姜健朱影哈尔滨工业大学机电工程学院黑龙江哈尔滨150006 中国船舶集团有限公司第七〇三研究所黑龙江哈尔滨150078

为保证对船舶动力舱极早期火灾探测的及时性、准确性和可靠性,需要对烟雾浓度检测原理进行改进和烟雾浓度算法的创新。基于电容式检测元胞结构对烟雾浓度检测原理进行全新设计,并采用多尺度烟雾粒子浓度检测算法对检测信号进行处理,以... 详细信息

为保证对船舶动力舱极早期火灾探测的及时性、准确性和可靠性,需要对烟雾浓度检测原理进行改进和烟雾浓度算法的创新。基于电容式检测元胞结构对烟雾浓度检测原理进行全新设计,并采用多尺度烟雾粒子浓度检测算法对检测信号进行处理,以计算出烟雾粒子浓度。试验结果表明:新设计的探测器可实现对0~10%obs/m浓度烟雾粒子的有效检测,检测精度高于百万分比浓度(Parts Per Million,PPM)级;探测器的灵敏度可以达到PPM级;在存在一定浓度的油气和不同粒径灰尘的使用环境中,仍能实现高于PPM级精度的烟雾粒子浓度检测。

关键词：船舶动力舱极早期火灾检测烟雾浓度探测电容式检测多尺度信号处理

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Self-templating thermolysis synthesis of Cu2-xS@ M （M = C, TiO2, MoS2） hollow spheres and their application in rechargeable lithium batteries

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Nano Research 2018年第2期11卷 831-844页

作者： Yunhui Wang He Li yiyong zhang Yueying Peng Peng zhang Jinbao Zhao State Key Lab of Physical Chemistry of Solid Surfaces College of Chemistry and Chemical Engineering Xiamen University Xiamen China Collaborative Innovation Center of Chemistry for Energy Materials College of Chemistry and Chemical Engineering Xiamen University Xiamen China State-Province Joint Engineering Laboratory of Power Source Technology for New Energy Vehicle Xiamen University Xiamen China College of Energy Xiamen University Xiamen China

Owing to their unique structural stability and impressive long-term cycling performance, coated hollow structures are highly attractive for energy storage systems, especially batteries. Many efforts have been devoted and various strategies have been proposed to prepare such materials. In the present work, we propose a self-templating thermolysis strateg different from traditional wet processing methods, to fabricate cuprous sulfide hollow spheres coated with different shells, by exploiting the thermal decomposition properties of the core （CuS） and the protection provided by the shell. To demonstrate the generality of this synthetic approach, three different coating materials （carbon, TiO2, MoS2） have been chosen to prepare Cu2_S@C, Cu2_S@TiO2 and Cu2_xS@MoS2 hollow spheres. All synthesized composite materials were then assembled as electrodes and tested in lithium batteries, showing excellent cycling stability. In particular, the electro- chemical properties of Cu2_xS@C were thoroughly investigated. The results of this work provide an alternative route to prepare coated metal sulfide hollow soheres for enerL^v storage aoDlications.

关键词： self-templatingthermolysis sulfide hollow spheres lithium batteries

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Biomass-derived self-supporting sulfur host with NiS/C composite for high-loading Li-S battery cathode

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Science China(Technological Sciences) 2023年第1期66卷 181-192页

作者： LIU LuZhi XIA GuangHui WANG Ding HUANG JieMeng DUAN JianGuo zhang yiyong DONG Peng zhang YingJie National and Local Joint Engineering Laboratory for Lithium-ion Batteries and Materials Preparation Technology Key Laboratory of Advanced Battery Materials of Yunnan ProvinceFaculty of Metallurgical and Energy EngineeringKunming University of Science and TechnologyKunming 650093China College of Materials Science and Engineering Sichuan UniversityChengdu 610065China

High sulfur loading is a practical way to realize the advantages of high energy density lithium-sulfur(Li-S)***,we report a biomass-derived flexible self-supporting carbon(SSC)coupled with Ni S/C used as a sulfur host for high-efficiency sulfur storage.A high areal sulfur loading of 5.3 mg cm-2can be achieved in the as-prepared composite host,and physical/chemical dual blocking effects for polysulfides are implemented in the SSC-Ni S/C *** 3D SSC with an interwoven structure offers a large surface area and wide internal space for sulfur ***,the powerful capability of physical immobilization/chemical anchoring of the polysulfides endowed by SSC and Ni S mitigates the shuttle *** compared electrodes with different current collectors,and the SSC-Ni S/C-1200 electrode material showed outstanding electrochemical performance,exhibiting a first specific capacity of 1268.36 m A h g-1at a high sulfur loading of 5.3 mg ***,the SSC-Ni S/C-1200 electrode exhibited a good remaining capacity of 555.15 m A h g-1at a current density of0.5 A g-1with a high sulfur loading of 3.3 mg cm-2after 300 *** addition,the active material loaded in the traditional way easily falls off when the conventional current collector is folded with increasing sulfur loading,but the flexible self-supporting carbon current collector can solve this *** study prepared a flexible free-standing 3D interconnected carbon current *** the introduction of amorphous carbon-coated Ni S,the self-supporting cathode SSC-Ni S/C-1200 achieved high sulfur loading that results in excellent electrochemical performance,providing a reference for future research on high sulfur loading in lithium-sulfur batteries.

关键词： lithium-sulfur batteries current collector biomass-derived carbon high sulfur loading cycling stability

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Application of MXenes in lithium-sulfur batteries

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Science China(Technological Sciences) 2022年第10期65卷 2259-2273页

作者： HOU JiYue WANG Ying YANG WenHao WANG Fei YANG Dong zhang yiyong LIANG Feng LI Xue zhang YingJie ZHAO JinBao National and Local Joint Engineering Laboratory for Lithium-ion Batteries and Materials Preparation Technology Faculty of Metallurgical and Energy EngineeringKunming University of Science and TechnologyKunming 650093China College of Electrical Information Engineering PanZhihua UniversityPanzhihua 617000China State Key Laboratory of Physical Chemistry of Solid Surfaces State-Province Joint Engineering Laboratory of Power Source Technology for New Energy VehicleCollaborative Innovation Center of Chemistry for Energy MaterialsCollege of Chemistry and Chemical EngineeringXiamen UniversityXiamen 361005China

Although lithium-sulfur batteries are considered one of the most potential next-generation energy storage systems owing to their high-energy density, the dissolution and shuttle of intermediate lithium polysulfides primarily limit their commercial applications. Currently, the search for new materials for high-performance lithium-sulfur batteries has become a global research ***, two dimensional inorganic compound comprising several layers of transition metal carbide, nitride, or car-bonitride,are actively investigated owing to their large specific surface area, good conductivity, and excellent cycle and rate *** article firstly reviews the breakthrough of MXenes in lithium-sulfur batteries, introduces the preparation methods and structural characteristics, and summarizes the specific applications and modification mechanisms in lithium-sulfur ***, the characteristics and advantages of MXenes as a composite electrode material for lithium-sulfur batteries are highlighted. Finally, the potential in future commercial applications is summarized.

关键词： lithium-sulfur battery MXenes two-dimensional nanomaterials sulfur fixation performance sulfur fixation mechanism

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“因专施教”大学物理教学改革探究

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物理通报 2024年第9期 14-16,20页

作者：王强郝利丽张义勇刘超刘强东北石油大学物理与电子工程学院黑龙江大庆163318

在分析大学物理教学现状的基础上,提出“因专施教”精准式大学物理教学改革模式.以调研为依据制定符合各个专业特征的教学内容,突出级联问题驱动和案例教学相结合的教学法,实施过程考核、期末考核和专业关联考核相结合的综合考核模式,... 详细信息

在分析大学物理教学现状的基础上,提出“因专施教”精准式大学物理教学改革模式.以调研为依据制定符合各个专业特征的教学内容,突出级联问题驱动和案例教学相结合的教学法,实施过程考核、期末考核和专业关联考核相结合的综合考核模式,真正体现新工科建设过程中大学物理教学的基础作用和服务新工科的辅助功能.

关键词：新工科大学物理因专施教级联问题驱动案例教学

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The application of nanostructured transition metal sulfides as anodes for lithium ion batteries

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Journal of Energy Chemistry 2018年第6期27卷 1536-1554页

作者： Jinbao Zhao yiyong zhang Yunhui Wang He Li Yueying Peng State Key Laboratory of Physical Chemistry of Solid Surfaces State-Province Joint Engineering Laboratory of Power Source Technology for New Energy Vehicle Collaborative Innovation Center of Chemistry for Energy Materials College of Chemistry and Chemical Engineering Xiamen University Xiamen361005 Fujian China

With wide application of electric vehicles and large-scale in energy storage systems, the requirement ofsecondary batteries with higher power density and better safety gets urgent. Owing to the merits of hightheoretical capacity, relatively low cost and suitable discharge voltage, much attention has been paid tothe transition metal sulfides. Recently, a large amount of research papers have reported about the appli-cation of transition metal sulfides in lithium ion batteries. However, the practical application of transitionmetal sulfides is still impeded by their fast capacity fading and poor rate performance. More well-focusedresearches should be operated towards the commercialization of transition metal sulfides in lithium ionbatteries. In this review, recent development of using transition metal sulfides such as copper sulfides,molybdenum sulfides, cobalt sulfides, and iron sulfides as electrode materials for lithium ion batteriesis presented. In addition, the electrochemical reaction mechanisms and synthetic strategy of transitionmetal sulfides are briefly summarized. The critical issues, challenges, and perspectives providing a fur-ther understanding of the associated electrochemical processes are also discussed.

关键词： Transition metal sulfides Lithium ion batter Anode

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Gardening and Agricultural Application in Chengde Summer Mountain Resort

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Asian Agricultural Research 2013年第5期5卷 98-99,104页

作者： Yanping LI yiyong zhang Haicheng YU Hebei Tourism Vocational College

Taking Chengde Summer Mountain Resort for example, agricultural development and application in gardening practices in the flourishing ages of Kangxi and Qianlong, and cultural connotations of valuing the fundamental r... 详细信息

关键词： Summer Mountain Resort Gardening Agricultural appl

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