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In Situ Directional Polymerization of Poly(1,3-dioxolane)Solid Electrolyte Induced by Cellulose Paper-Based Composite Separator for Lithium Metal Batteries

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Energy & Environmental Materials 2023年第3期6卷 134-143页

作者： Jian Ma Yueyue Wu Hao Jiang Xin Yao Fan Zhang Xianglong Hou xuyong feng Hongfa Xiang School of Materials Science and Engineering Anhui Provincial Key Laboratory of Advanced Functional Materials and DevicesHefei University of TechnologyHefei 230009China

In traditional in situ polymerization preparation for solid-state electrolytes,initiators are directly added to the liquid *** this article,a novel cellulose paper-based composite separator is fabricated,which employs alumina as the inorganic reinforcing material and is loaded with polymerization initiator aluminum *** upon this,a separator-induced in situ directional polymerization technique is demonstrated,and the extra addition of initiators into liquid precursors is no longer *** polymerization starts from the surface and interior of the separator and extends outward with the gradually dissolving of initiators into the *** with its traditional counterpart,the separator-induced poly(1,3-dioxolane)electrolyte shows improved interfacial contact as well as appropriately mitigated polymerization rate,which are conducive to practical *** measurement results show that the prepared poly(1,3-dioxolane)solid electrolyte possesses an oxidation potential up to 4.4 V and a high Li+transference number of *** 1000 cycles at 2 C rate(340 mA g^(−1)),the assembled Li||LiFePO_(4)solid battery possesses a 106.8 mAh g^(−1)discharge capacity retention and 83.5%capacity retention ratio,with high average Coulombic efficiency of 99.5%*** work may provide new ideas for the design and application of in situ polymerization technique for solid electrolytes and solid batteries.

关键词： cellulose paper-based composite separator in situ directional polymerization lithium metal battery poly-DOL electrolyte solid-state electrolyte

Solid-state electrolytes for solid-state lithium-sulfur batteries:Comparisons,advances and prospects

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Journal of Energy Chemistry 2022年第10期31卷 370-386,I0009页

作者： Xin Liang Lulu Wang Xiaolong Wu xuyong feng Qiujie Wu Yi Sun Hongfa Xiang Jiazhao Wang School of Energy Materials and Chemical Engineering Hefei UniversityHefei 230601AnhuiChina School of Materials Science and Engineering Engineering Research Center of High–Performance Copper Alloy Materials and ProcessingMinistry of EducationHefei University of TechnologyHefei 230009AnhuiChina Institute for Superconducting and Electronic Materials University of WollongongWollongongNSW 2519Australia

Compared with other secondary batteries,lithium-sulfur batteries(LSBs)have unparalleled advantages such as high energy density,low cost,*** liquid LSB systems,it is extremely easy to cause severe‘‘shuttle effecto and safety ***,the development of solid-state LSBs(SSLSBs)has been attracting much more *** the most essential part of the SSLSBs,the solid-state electrolyte(SSE)has received significant attention from *** this review,we concentrate on discussing the core of SSLSBs,which is the ***,we also highlight the differences in the properties of the different SSEs,which are polymer-based electrolytes and ceramic-based *** addition,the challenges and advances in different types of SSEs are also compared and described ***,the prospects for new SSE systems and the design of effective SSE structures to achieve highperformance SSLSBs are also ***,this review is expected to give readers a comprehensive and systematic understanding of SSEs for SSLSBs.

关键词： Solid-state lithium-sulfur batteries Solid-state electrolyte Polymer-based electrolyte Ceramic-based electrolyte

Enhanced Electrochemical Performance of Na_(0.67)Fe_(0.5)Mn_(0.5)O_(2)Cathode with SnO_(2)Modification

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Chemical Research in Chinese Universities 2021年第5期37卷 1130-1136页

作者： YE Peng LIU Yongchao MA Jian WANG Yueda feng xuyong XIANG Hongfa SUN Yi LIANG Xin YU Yan School of Materials Science and Engineering Engineering Research Center of High Performance Copper Alloy Materials and ProcessingMinistry of EducationAnhui Provincial Key Laboratory of Advanced Functional Materials and DevicesHefei University of TechnologyHefei230009P.R.China Hefei National Laboratory for Physical Sciences at the Microscale Department of Materials Science and EngineeringKey Laboratory of Materials for Energy ConversionChinese Academy of Sciences(CAS)University of Science and Technology of ChinaHefei230026P.R.China Dalian National Laboratory for Clean Energy(DNL) Chinese Academy of Sciences(CAS)Dalian116023P.R.China

P2-type layered oxide Na_(0.67)Fe_(0.5)Mn_(0.5)O_(2)is recognized as a very promising cathode material for sodium-ion batteries due to the merits of high capacity,high voltage,low cost,and easy ***,its unsatisfactory cycle and rate performances remain huge obstacles for practical ***,we report a strategy of SnO_(2)modification on P2-type Na_(0.67)Fe_(0.5)Mn_(0.5)O_(2)to improve the cycle and rate performance.

关键词： Cathode Electrochemical

Stable sodium anodes for sodium metal batteries(SMBs) enabled by in-situ formed quasi solid-state polymer electrolyte

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Journal of Energy Chemistry 2023年第2期77卷 290-299,I0008页

作者： Jian Ma xuyong feng Yueyue Wu Yueda Wang Pengcheng Liu Ke Shang Hao Jiang Xianglong Hou David Mitlin Hongfa Xiang School of Materials Science and Engineering Anhui Provincial Key Laboratory of Advanced Functional Materials and DevicesHefei University of TechnologyHefei 230009AnhuiChina Materials Science and Engineering Program&Texas Materials Institute(TMI) The University of Texas at AustinAustinTX 78712-1591USA School of Chemistry and Chemical Engineering Anhui Provincial Key Laboratory of Advanced Functional Materials and DevicesHefei University of TechnologyHefei 230009AnhuiChina

A high-performance quasi-solid polymer electrolyte for sodium metal batteries(SMBs)based on in-situ polymerized poly(1,3-dioxolane)(DOL)with 20%volume ratio of fluoroethylene carbonate(FEC),termed"PDFE-20",is proposed in this *** is demonstrated PDFE-20 possesses a room-temperature ionic conductivity of 3.31×10^(-3) S cm^(-1),an ionic diffusion activation energy of 0.10 eV,and an oxidation potential of 4.4 *** based on PDFE-20 and Na_(3)V_(2)(PO_(4))_(3)(NVP)cathodes were evaluated with an active material mass loading of 6.8 mg cm^(-2).The cell displayed an initial discharge specific capacity of 104 mA h g^(-1),and97.1%capacity retention after 100 cycles at 0.5 ***-situ polymerization conformally coats the anode/-cathode interfaces,avoiding geometrical gaps and high charge transfer resistance with ex-situ polymerization of the same *** acts as a plasticizer during polymerization to suppress crystallization and significantly improves ionic *** battery cycling FEC promotes mechanical congruence of electrolyte-electrode interfaces while forming a stable NaF-rich solid electrolyte interphase(SEI)at the *** functional theory(DFT)calculations were also performed to further understand the role FEC in the poly(DOL)-FEC *** work broadens the application of in-situ prepared poly(DOL)electrolytes to sodium storage and demonstrates the crucial role of FEC in improving the electrochemical performance.

关键词： Quasi-solid batteries(QSBs) Quasi-solid electrolytes(QSEs) NaF-rich passivating layer Interfacial stability Sodium metal batteries(SMBs)

Low-Volatile Binder Enables Thermal Shock-Resistant Thin-Film Cathodes for Thermal Batteries

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Energy & Environmental Materials 2024年第4期7卷 126-134页

作者： Yong Xie Yong Cao Xu Zhang Liangping Dong Xiaojiang Liu Yixiu Cui Chao Wang Yanhua Cui xuyong feng Hongfa Xiang Long Qie Laboratory of Electrochemical Power Sources Institute of Electronic EngineeringChina Academy of Engineering PhysicsMianyang 621000China School of Materials Science and Engineering Hefei University of TechnologyHefei 230009China State Key Laboratory of Material Processing and Die&Mold Technology School of Materials Science and EngineeringHuazhong University of Science and TechnologyWuhan 430074China

Manufacturing thin-film components is crucial for achieving high-efficiency and high-power thermal batteries(TBs).However,developing binders with low-gas production at the operating temperature range of TBs(400-550°C)has proven to be a significant ***,we report the use of acrylic acid derivative terpolymer(LA136D)as a low-volatile binder for thin-film cathode fabrication and studied the chain scission and chemical bondbreaking mechanisms in *** is shown LA136D defers to randomchain scission and cross-linking chain scission mechanisms,which gifts it with a low proportion of volatile products(ψ,ψ=39.2 wt%)at even up to 550°C,well below those of the conventional PVDF(77.6 wt%)and SBR(99.2 wt%)***,LA136D contributes to constructing a thermal shock-resistant cathode due to the step-by-step bond-breaking *** is beneficial for the overall performance of *** discharging test,the thin-film cathodes exhibited a remarkable 440%reduction in polarization and 300%enhancement in the utilization efficiency of cathode materials,while with just a slight increase of 0.05 MPa in gas pressure compared with traditional“thick-film”*** work highlights the potential of LA136D as a low-volatile binder for thin-film cathodes and shows the feasibility of manufacturing high-efficiency and high-power TBs through polymer molecule engineering.

关键词： gas production high-power low-volatile binder thermal battery thin-film cathode

人工势场和虚拟结构结合的无人车编队及避障研究

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兵器装备工程学报 2022年第9期43卷 304-308页

作者：崔立堃冯绪永王承祥陕西理工大学机械工程学院陕西汉中723001

针对虚拟结构法车辆编队避障时编队结构缺乏灵活性的问题,提出了一种将人工势场法与虚拟结构法相结合的车辆协同编队及避障算法。利用人工势场建立车辆与虚拟结构中虚拟点的引力,控制编队中队形的保持和编队车辆避障后重新形成编队;建... 详细信息

针对虚拟结构法车辆编队避障时编队结构缺乏灵活性的问题,提出了一种将人工势场法与虚拟结构法相结合的车辆协同编队及避障算法。利用人工势场建立车辆与虚拟结构中虚拟点的引力,控制编队中队形的保持和编队车辆避障后重新形成编队;建立车辆与障碍物的斥力和车辆之间的相互作用力,控制编队中车辆与障碍物的避障以及编队中车辆之间的避撞;通过Matlab以3车辆编队和6辆车编队为例进行了数值仿真,结果表明:该文所提出的人工势场和虚拟结构结合的车辆协同编队及避障算法可以有效实现编队车辆的避障行为,编队各车辆可实现单独避障,并在避障后能快速恢复队形继续前进,编队路径变化较为平缓。

关键词：人工势场虚拟结构无人车辆编队避障

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废旧LiCoO_(2)改性钠离子电池Na_(0.67)Fe_(0.5)Mn_(0.5)O_(2)正极材料

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硅酸盐学报 2022年第1期50卷 16-25页

作者：侯香龙冯绪勇徐义俭吴辰华马健叶鹏项宏发合肥工业大学材料科学与工程学院合肥230009

以废旧锂电池中的LiCoO_(2)正极材料为原料,通过溶解回收其中的Li、Co元素并用于Na_(0.67)Fe_(0.5)Mn_(0.5)O_(2)的改性,成功制备出钠离子电池正极材料Na0.67-1.33xLixCox(Fe0.5Mn0.5)1-2xO_(2)(x=0、0.035、0.070、0.105、0.140)。X射线衍射(XRD)结果显示,Li^(+)/Co^(3+)可以掺杂到P2-Na_(0.67)Fe_(0.5)Mn_(0.5)O_(2)中形成固溶体,伴随着晶胞参数的变小。X射线光电子能谱(XPS)结果显示Li^(+)/Co^(3+)的掺杂会导致部分Mn^(3+)被氧化为Mn^(4+),降低了Jahn-Teller效应的影响。电化学测试表明,与原始样相比,改性后的Na_(0.67)Fe_(0.5)Mn_(0.5)O_(2)容量有一定下降,但循环稳定性和倍率性能都有所提高。当掺杂量为0.105时,Na_(0.53)Li_(0.105)Co_(0.105)(Fe_(0.5)Mn_(0.5))_(0.79)O_(2)电化学性能最好,1 C电流密度时,150圈循环后的容量保持率达到67%,5 C电流密度时的容量可以达到30 mA·h/g。

关键词：废旧锂离子电池钴酸锂回收与再利用钠离子电池铁锰酸钠

基于线性递减权值PSO算法优化LQR控制的主动悬架性能研究

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现代制造工程 2023年第1期 43-49页

作者：耿玺钧崔立堃冯绪永刘知阳韩晋陕西理工大学机械工程学院汉中723000

针对车辆主动悬架线性二次型调节器(Linear Quadratic Regulator,LQR)控制中权重系数的取值具有主观性,且适应度较低的问题,提出使用粒子群优化(PSO)算法优化LQR控制器,使LQR控制器的权重矩阵得到最优结果。为验证此方法的有效性,以汽... 详细信息

针对车辆主动悬架线性二次型调节器(Linear Quadratic Regulator,LQR)控制中权重系数的取值具有主观性,且适应度较低的问题,提出使用粒子群优化(PSO)算法优化LQR控制器,使LQR控制器的权重矩阵得到最优结果。为验证此方法的有效性,以汽车主动悬架作为被控对象,设计了PSO算法优化LQR控制器,利用PSO算法的全局搜索能力,以主动悬架的性能指标作为目标函数对权重矩阵进行优化设计,以提高LQR控制器的设计效率和性能。通过仿真对比了LQR控制的主动悬架、固定权值PSO算法优化后的LQR控制的主动悬架和基于线性递减权值PSO算法优化LQR控制主动悬架的各项性能参数,并且针对固定权值PSO算法收敛速度慢的特点,进行优化,确定使用线性递减权值PSO算法可以提高收敛速度。最终实验结果表明基于固定权值PSO算法优化后的LQR相较于单纯LQR控制的主动悬架,其车身垂向加速度、悬架动行程及轮胎动位移这3个性能指标得到降低;基于线性递减权值PSO算法优化后的LQR控制的主动悬架的各项性能指标在固定权值PSO算法优化的基础上,可再次优化车身垂向加速度、悬架动行程及轮胎动位移这3个性能指标,可较大地改善其舒适性。

关键词：线性递减权值粒子群线性二次型调节器控制器主动悬架舒适性

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氢燃料电池汽车动力系统设计及性能仿真

汽车实用技术 2023年第5期48卷 8-15页

作者：王承祥崔立堃冯绪永付坤陕西理工大学机械工程学院陕西汉中723001

针对燃油车与氢燃料电池汽车的燃油经济性和动力性,源于某型号汽油车的整车结构参数和动力性能指标,设计了一套适用于氢燃料电池汽车的动力系统,给出动力系统控制策略方案,完成总体布置和整体结构的设计,在对相关部件进行选型计算的基础... 详细信息

针对燃油车与氢燃料电池汽车的燃油经济性和动力性,源于某型号汽油车的整车结构参数和动力性能指标,设计了一套适用于氢燃料电池汽车的动力系统,给出动力系统控制策略方案,完成总体布置和整体结构的设计,在对相关部件进行选型计算的基础上,确定氢燃料电池汽车动力系统设计参数。在MATLAB/Advisor平台上搭建氢燃料电池模型、驱动电机模型、动力蓄电池模型及整车模型,采用中国城市工况对所设计的氢燃料电池汽车动力系统性能进行仿真测试,并与原汽油车进行对比分析。结果表明,设计的氢燃料电池汽车的动力性能完全符合实际工况要求;燃油经济性、加速性能和爬坡性能都得到较大提升,燃油经济性提高了17.5%,加速时间提高了11.7%,最大爬坡度提高了1.3%。

关键词：氢燃料电池汽车动力系统设计性能仿真

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