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Lithium(fluorosulfonyl)(n-nonafluorobutanesulfonyl)imide for stabilizing cathode-electrolyte interface in sulfonamide electrolytes

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Nano Research 2023年第7期16卷 9507-9518页

作者： Hao Wu ziyu song Wenfang Feng Zhibin Zhou Heng Zhang Key Laboratory of Material Chemistry for Energy Conversion and Storage(Ministry of Education) School of Chemistry and Chemical EngineeringHuazhong University of Science and TechnologyWuhan 430074China

Rechargeable lithium metal batteries(RLMBs)have been regarded as promising successors for contemporary lithium-ion batteries,in view of their high gravimetric and volumetric energy *** non-aqueous liquid electrolytes containing organic carbonate solvents possess high chemical reactivities with metallic lithium anode and high flammability,which induces considerable safety threats under extreme conditions(e.g.,overcharging and thermal runaway).Herein,we propose the utilization of fluorinated sulfonamide(i.e.,N,N-dimethyl fluorosulfonamide(DMFSA))as solvent,together with lithium(fluorosulfonyl)(n-nonafluorobutanesulfonyl)imide(LiFNFSI)as co-salt and/or electrolyte additive for accessing safer and highperforming *** physical(e.g.,thermal transition,viscosity,and ionic conductivity)and electrochemical(e.g.,anodic stability on different electrodes)characterizations have been performed,aiming to reveal the inherent characteristics of the sulfonamide-based electrolytes and the particular role of LiFNFSI on the stabilization of LiCoO_(2) *** has been demonstrated that the sulfonamide-based electrolytes exhibit superior flame-retardant abilities and decent ionic conductivities(>1 mS·cm^(-1)at room temperature).The incorporation of LiFNFSI as co-salt and/or electrolyte additive could significantly suppress the side reactions occurring at the cathode compartment,through the preferential decompositions of the *** work is anticipated to give an in-depth understanding on the working mechanism of LiFNFSI in the sulfonamide-based electrolytes,and also spurs the development of high-energy and safer RLMBs.

关键词： lithium metal batteries lithium(fluorosulfonyl)(n-nonafluorobutanesulfonyl)imide sulfonamide non-flammable electrolyte cathode stabilization

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N,N-Dimethyl fluorosulfonamide for suppressed aluminum corrosion in lithium bis(trifluoromethanesulfonyl)imide-based electrolytes

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Nano Research 2023年第6期16卷 8269-8280页

作者： Hao Wu ziyu song Xingxing Wang Wenfang Feng Zhibin Zhou Heng Zhang Key Laboratory of Material Chemistry for Energy Conversion and Storage(Ministry of Education) School of Chemistry and Chemical EngineeringHuazhong University of Science and TechnologyWuhan 430074China

Effective passivation of aluminum(Al)current collector at high potentials(>4.0 V ***/Li^(+))is of essence for the long-term operation of lithium-based ***,the non-aqueous liquid electrolytes comprising lithium bis(trifluoromethanesulfonyl)imide(LiTFSI)and organic carbonates are corrosive toward Al current collector at high potentials(>4.0 V ***/Li^(+)),despite their intriguing features(e.g.,good chemical stability and high ionic conductivity).Herein,we propose the utilization of N,N-dimethyl fluorosulfonamide(DMFSA)as electrolyte solvent for suppressing Al corrosion in the LiTFSI-based *** has been demonstrated that the electrolyte of 1.0 M LiTFSI-DMFSA shows decent ionic conductivities(1.76 mS·cm^(−1)at 25℃)with good fluidities(2.44 cP at 25℃).In particular,the replacement of organic carbonates(e.g.,ethylene carbonate and ethyl methyl carbonate)with DMFSA leads to significant suppressed Al *** and compositional characterizations utilizing scanning electron microscopy(SEM)and X-ray photoelectron spectroscopy(XPS)reveal that DMFSA favors the formation of insoluble species(i.e.,aluminum fluoride(AlF_(3)))on the surface of Al electrode,which effectively inhibits continuous exposure of fresh Al surface to electrolyte during *** work provides not only a deeper understanding on the Al corrosion in LiTFSI-based electrolyte but also an elegant path to stabilize the Al current collector at high potentials(>4.0 V ***/Li^(+)),which may give an impetus into the development of lithium-based batteries.

关键词： aluminum current collector corrosion inhibition lithium bis(trifluoromethanesulfonyl)imide lithium-based batteries

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Wind Turbine Gearbox Fault Diagnosis Based on Multi-sensor Signals Fusion

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Protection and Control of Modern Power Systems 2024年第4期9卷 96-109页

作者： Yao Zhao ziyu song Dongdong Li Rongrong Qian Shunfu Lin the College of Electrical Engineering Shanghai University of Electric PowerShanghai 200090China IEEE the Design Research and Development Center AECC Commercial Aircraft Engine Co. Ltd.Shanghai 200241China

This paper proposes a novel fault diagnosis method by fusing the information from multi-sensor signals to improve the reliability of the conventional vibration-based wind turbine drivetrain gearbox fault diagnosis *** method fully extracts fault features for variable speed,insufficient samples,and strong noise scenarios that may occur in the actual operation of a wind turbine planetary ***,multiple sensor signals are added to the diagnostic model,and multiple stacked denoising auto-encoders are designed and improved to extract the fault ***,a cycle reservoir with regular jumps is introduced to fuse multidimensional fault information and output diagnostic results in response to the insufficient ability to process fused information by the conventional Softmax *** addition,the competitive swarm optimizer algorithm is introduced to address the challenge of obtaining the optimal combination of parameters in the ***,the validation results show that the proposed method can increase fault diagnostic accuracy and improve robustness.

关键词： Wind turbine gearbox fault diagnosis multiple scenarios deep learning stacked denoising au-to-encoder cycle reservoir with regular jumps feature fusion network

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Ion transport and structural design of lithium-ion conductive solid polymer electrolytes:a perspective

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Materials Futures 2022年第4期1卷 74-92页

作者： Bo Tong ziyu song Hao Wu Xingxing Wang Wenfang Feng Zhibin Zhou Heng Zhang Key Laboratory of Material Chemistry for Energy Conversion and Storage Huazhong University of Science and TechnologyWuhan430074 HubeiPeople’s Republic of China

Solid polymer electrolytes(SPEs)possess several merits including no leakage,ease in process,and suppressing lithium dendrites *** features are beneficial for improving the cycle life and safety performance of rechargeable lithium metal batteries(LMBs),as compared to conventional non-aqueous liquid ***,the superior elasticity of polymeric material enables the employment of SPEs in building ultra-thin and flexible batteries,which could further expand the application scenarios of high-energy rechargeable *** this perspective,recent progresses on ion transport mechanism of SPEs and structural designs of electrolyte components(*** lithium salts,polymer matrices)are *** addition,key achievements in the field of single lithium-ion conductive SPEs are also outlined,aiming to provide the status quo in those SPEs with high selectivity in cationic ***,possible strategies for improving the performance of SPEs and their rechargeable LMBs are also discussed.

关键词： solid-state lithium metal batteries solid polymer electrolytes single lithium-ion conductor conductive lithium salts polymer matrices

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Sulfur-containing compounds as electrolyte additives for lithium-ion batteries

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InfoMat 2021年第12期3卷 1364-1392页

作者： Bo Tong ziyu song Huihai Wan Wenfang Feng Michel Armand Jincheng Liu Heng Zhang Zhibin Zhou Key Laboratory of Material Chemistry for Energy Conversion and Storage(Ministry of Education) School of Chemistry and Chemical EngineeringHuazhong University of Science and TechnologyWuhanChina EVE Energy Co. Ltd.Zhongkai Hi-Tech ZoneHuizhouGuangdongChina Centre for Cooperative Research on Alternative Energies(CIC energigune) Basque Research and Technology Alliance(BRTA)Alava Technology ParkVitoriaGasteizSpain

Originating from“rocking-chair concept”,lithium-ion batteries(LIBs)have become one of the most important electrochemical energy storage technolo-gies,which have largely impacted our daily *** utilization of electrolyte additives in small quantities(≤5%by wt or vol)has been long viewed as an economical and efficient approach to regulate the properties of electrolyte and electrode–electrolyte interphases and consequently improve the cycling perfor-mance of *** all the kinds of electrolyte additives,sulfur-containing compounds have gained significant attention due to their unique features in building stable electrode–electrolyte interphases and protect battery cells from *** this work,advances and progresses of sulfur-containing addi-tives used in LIBs are overviewed,with special attention paid to the working mechanisms of these electrolyte ***,four representative sulfur-containing compounds(i.e.,1,3-propane sultone,prop-1-ene-1,3-sultone,1,3,2-dioxathiolane-2,2-dioxide,and ethylene sulfite)are comparatively dis-cussed concerning their impact on electrode–electrolyte interphases and cell *** work on the development of sulfur-containing compounds as functional electrolyte additives is also *** present review is antici-pated to be not only a base document to access the status quo in this research domain but also a guideline to select specialized additives and electrolytes for practical applications.

关键词： electrolyte additives lithium-ion batteries rechargeable batteries sulfur-containing compounds

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Robust fuzzy sliding mode control for the bio-economic singular stochastic Markov jump system

Robust fuzzy sliding mode control for the bio-economic singu...

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第三十九届中国控制会议

作者： ziyu song Li Li College of Mathematics and Physics Bohai University

Throughout the paper,the sliding mode control of bio-economic fuzzy singular Markov system is studied to make the biomass stability at low ***,a bio-economic singular system is established by taking the intrinsic growth rate of immature species as a Markov chain,and describing the system with a Takagi-Sugeno（T-S） fuzzy ***,an suitable sliding mode surface is proposed,and the stochastic admissibility of the fuzzy singular Markov jumping system based on the integral sliding mode surface can be ensured by a set of sufficient ***,the SMC law is proposed to make the sliding surface meet the accessibility *** last,the effectiveness of the proposed method is verified by two examples of eel seedling breeding.

关键词： Bio-economic singular system T-S fuzzy model sliding mode control Markov Jump system

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将创新内化为责任:变革型领导激发员工创新行为的新路径——一个有调节的中介模型

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经济与管理研究 2019年第10期40卷 132-144页

作者：宋孜宇首都经济贸易大学工商管理学院呼伦贝尔学院经济管理学院

本文基于社会认知理论和计划行为理论,探讨建设性变革责任感在变革型领导激发员工创新行为过程中所发挥的中介作用机制,并依据社会交换理论分析中国文化情境下领导-成员交换对中介过程的调节作用机制。通过来自全国多个相对发达地区科... 详细信息

本文基于社会认知理论和计划行为理论,探讨建设性变革责任感在变革型领导激发员工创新行为过程中所发挥的中介作用机制,并依据社会交换理论分析中国文化情境下领导-成员交换对中介过程的调节作用机制。通过来自全国多个相对发达地区科技型企业的451份样本进行实证分析,研究结果表明,变革型领导对员工创新行为和建设性变革责任感均有显著正向影响,建设性变革责任感在变革型领导和员工创新行为之间发挥了中介作用,领导-成员交换在中介作用的第二阶段发挥了正向调节作用,进而发现了变革型领导激发员工创新行为的新路径--将创新内化为责任。

关键词：变革型领导员工创新行为建设性变革责任感领导-成员交换

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基于钢丝绳张紧轮的矿井摩擦提升系统纵向振动主动控制

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煤炭学报 2023年第6期48卷 2590-2598页

作者：宋延廷宋字宇郝惠敏王鹤黄家海太原理工大学机械与运载工程学院山西太原030024

针对落地式摩擦提升机运行过程中产生的纵向振动问题,提出了基于液压张紧轮的纵向振动主动控制方案,该方案将液压张紧轮水平布置在上天轮下方,使得张紧轮输出力垂直于提升钢丝绳,通过控制液压缸输出力改变张紧轮位置以调整钢丝绳张力和... 详细信息

针对落地式摩擦提升机运行过程中产生的纵向振动问题,提出了基于液压张紧轮的纵向振动主动控制方案,该方案将液压张紧轮水平布置在上天轮下方,使得张紧轮输出力垂直于提升钢丝绳,通过控制液压缸输出力改变张紧轮位置以调整钢丝绳张力和系统虚功,从而抵消系统冲击能量,继而减弱系统纵向冲击与振动,使系统快速趋于稳定,并通过增设固定张紧轮调整输出力带来的钢丝绳水平偏移。基于广义Hamilton原理建立了含液压张紧轮的摩擦式矿井提升系统分布式参数模型,依据李雅普诺夫第二稳定性原理设计了一类状态控制器,并通过试验验证了无控制状态下系统分布式参数模型的准确性。以下放工况为例在MATLAB中进行了控制仿真,结果表明基于液压张紧轮的纵向主动控制方案是可行的,且具有良好的减振效果,尤其对于停车制动后的纵向振动抑制效果非常突出;状态控制可将停车阶段产生的最大振动加速度从原始系统的2.59 m/s^(2)降低至1.6 m/s^(2),减幅达到38.22%,收敛至稳定仅耗时0.9 s;作为对比设计的PD控制仅仅将停车阶段的最大纵向振动加速度减小至2.3 m/s^(2),衰减幅度为11.20%,收敛至稳定耗时2.2 s。相较于传统浮动天轮主动控制方案,液压张紧轮减少了执行器高输出负载比。

关键词：摩擦提升机广义Hamilton原理李雅普诺夫函数纵向振动抑制

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运动训练分期问题的回顾与研究展望

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天津体育学院学报 2013年第5期28卷 436-439页

作者：张莉清宋子玉北京体育大学竞技体育学院北京100084 北京体育大学教育学院北京100084

在总结训练分期研究现状和分辨理论质疑的基础上,提出对运动训练分期问题的5大研究展望。以项群为研究视角对经典的分期理论是很好的补充和发展;训练分期框架下参赛优化的研究视角对于理顺训竞关系,优化不合理的竞赛制度具有关键的作用... 详细信息

在总结训练分期研究现状和分辨理论质疑的基础上,提出对运动训练分期问题的5大研究展望。以项群为研究视角对经典的分期理论是很好的补充和发展;训练分期框架下参赛优化的研究视角对于理顺训竞关系,优化不合理的竞赛制度具有关键的作用;竞技能力系统观的分期理论研究将整体观与局部观结合,有助于增强训练理论的实操性;全程性多年训练过程的分期研究关注分期的阶段性和连续性,要求研究者进行长期的纵向观察;运动员学、训分期相互影响的研究,强调青少年运动员训练安排的合理性和人性化,对于提升训练效率、保障运动员文化学习质量具有重要意义。

关键词：训练分期研究回顾研究展望竞技状态

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篮球技术下肢动作肌电和关节角度特征

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中国运动医学杂志 2014年第7期33卷 658-663页

作者：张莉清宋子玉北京体育大学北京100084 长沙医学院

目的:为揭示篮球专项技术的生物力学特点和损伤风险因素、预防膝关节损伤提供依据。方法:以12名篮球专业学生作为实验对象,运用表面肌电遥测和三维摄像技术对行进间突然变向、行进间快速后转身、横切跨步急停起跳和侧切起跳4个技术动作... 详细信息

目的:为揭示篮球专项技术的生物力学特点和损伤风险因素、预防膝关节损伤提供依据。方法:以12名篮球专业学生作为实验对象,运用表面肌电遥测和三维摄像技术对行进间突然变向、行进间快速后转身、横切跨步急停起跳和侧切起跳4个技术动作进行同步测试,截取支撑环节作为研究的动作片段。结果:支撑环节包含缓冲制动、支撑碾转和蹬伸离地三个动作阶段或其中两个;臀大肌放电明显且贡献度最大,股前肌群与小腿后肌群的贡献度次之,并因具体动作和性别而异,股后肌群活动相对较弱;支撑环节中,支撑腿膝关节角度均值由大到小排列是侧切上篮、行进间突然变向、行进间快速后转身和横切跨步急停起跳;而角度变化幅度由大到小排列是横切跨步急停、行进间快速后转身、行进间突然变向和侧切起跳。横切跨步急停起跳与行进间快速后转身动作的膝关节最小屈角在90°以下。结果提示:膝关节在半屈曲位发生扭转并快速蹬伸、股后肌群力量弱以及在过小的屈角上快速蹬伸是膝关节损伤的危险因素。建议增强臀大肌、股二头肌力量以及下肢协同肌群、拮抗肌群的配合收缩能力,重视基本功练习和正确技术定型。

关键词：篮球技术动作支撑环节表面肌电膝关节角度

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