检索结果-南通市图书馆

Thermal Runaway of Lithium-Ion Batteries Employing Flame-Retardant Fluorinated Electrolytes

Energy & Environmental Materials 2023年第1期6卷 333-339页

作者： junxian hou Li Wang Xuning Feng Junpei Terada Languang Lu Shigeaki Yamazaki Anyu Su Yoshiko Kuwajima Yongjiang Chen Tomoya Hidaka Xiangming He Hewu Wang Minggao Ouyang State Key Laboratory of Automotive Safety and Energy Tsinghua UniversityBeijing 100084China Institute of Nuclear and New Energy Technology Tsinghua UniversityBeijing 100084China Daikin Industries Ltd.1-1Nishi-HitotsuyaSettsu Osaka 566-8585Japan Sichuan New Energy Vehicle Innovation Center Yibin 644002China

Fluorinated electrolytes possess good antioxidant capacity that provides high compatibility to high-voltage cathode and flame retardance;thus,they are considered as a promising solution for advanced lithium-ion batteries carrying both high-energy density and high safety.Moreover,the fluorinated electrolytes are widely used to form stable electrolyte interphase,due to their chemical reactivity with lithiated graphite or lithium.However,the influence of this reactivity on the thermal safety of batteries is seldom discussed.Herein,we demonstrate that the flame-retardant fluorinated electrolytes help to reduce the flammability,while the lithium-ion batteries with flame-retardant fluorinated electrolytes still undergo thermal runaway and disclose their different thermal runaway pathway from that of battery with conventional electrolyte.The reduction in fluorinated components(e.g.,LiPF 6 and fluoroethylene carbonate(FEC))by fully lithiated graphite accounts for a significant heat release during battery thermal runaway.The 13%of total heat is sufficient to trigger the chain reactions during battery thermal runaway.This study deepens the understanding of the thermal runaway mechanism of lithium-ion batteries employing flame-retardant fluorinated electrolytes,providing guidance on the concept of electrolyte design for safer lithium-ion batteries.

关键词： battery safety flame retardance fluorinated electrolytes lithium-ion battery thermal runaway

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

One-pot synthesis of Li_3VO_4@C nanofibers by electrospinning with enhanced electrochemical performance for lithium-ion batteries

引用

Science Bulletin 2017年第15期62卷 1081-1088页

作者： Ruihuan Qin Gaoqi Shao junxian hou Zhi Zheng Tianyou Zhai Huiqiao Li State Key Laboratory of Material Processing and Die & Mould Technology School of Materials Science and Engineering Huazhong University of Science and Technology (HUST) Department of Composite Materials and Engineering College of Materials Science and Engineering Hebei University of Engineering

Electrospinning is firstly used to one-pot synthesis of Li_3VO_4@C nanofibers in a large scale. Although with the presence of organic sources in synthesis process, the pure phase Li_3VO_4 with superior nanofibrous morphology is still successfully obtained through adjusting different heat treatment processes and different vanadium sources. The prepared Li_3VO_4@C nanofibers exhibit a unique structure in which nanosized Li_3VO_4 particles are uniformly embedded in amorphous carbon matrix. Compared with Li_3VO_4/C powder,Li_3VO_4@C nanofibers display enhanced reversible capacity of 451 mAh g^(-1)at 40 mAg^(-1)with an increased initial coulombic efficiency of 82.3%, and the capacity can remain at 394 m Ah g^(-1)after 100 cycles. This superior electrochemical performance can be attributed to its unique structure which ensures a high reactivity by nanosized Li_3VO_4, more stable electrode/electrolyte interface by carbon encapsulation, improved electronic conductivity and buffered volume changes by flexible carbon matrix. The electrospinning technology provides an effective method to obtain high performance Li_3VO_4 as a promising anode material for lithium-ion batteries.

关键词：碳纳米纤维电化学性能一锅法合成锂离子电池纺丝技术静电热处理工艺电子电导率

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Full electromagnetic transient simulation for large power systems

引用

Global Energy Interconnection 2019年第1期2卷 29-36页

作者： Yong Tang Lei Wan junxian hou China Electric Power Research Institute Global Energy Interconnection Development and Cooperation Organization

For building Global Energy Interconnection(GEI), it is necessary to implement new breakthroughs on largepower system simulation. Key routes for implementing full electromagnetic transient simulation of large-power systems are described in this paper, and a top framework is designed. A combination of the new large time step algorithm and the traditional small-time step algorithm is proposed where both parts A and B are calculated independently. The method for integrating the Norton equivalence of the power electronic system to the entire power grid is proposed. A two-level gird division structure is proposed, which executes a multi-rate parallel calculation among subsystems and element parallel calculation in each subsystem. The initialization method of combining load flow derivation and automatic trial-and-error launching is introduced. The feasibility of the method is demonstrated through a practical power grid example, which lays a foundation for further research.

关键词： Global Energy Intercorinection Power system Electromagnetic transient Equivalence Machine-network in terface Parallel calculati on Power electro nics Initialization Technology framework CLC

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Polyaniline Modified Stainless Steel Fiber Felt for High-Performance Microbial Fuel Cell Anodes

Polyaniline Modified Stainless Steel Fiber Felt for High-Per...

引用

作者： junxian hou Zhongliang Liu Yanxia Li the College of Environmental and Energy Engineering Beijing University of Technology

The three-dimensional(3D) macroporous anodes are constructed by coating polyaniline(PANI) on stainless steel fiber felts(SSFFs) that have an open,solid and macroporous structure.In the present study,nano-polyaniline is synthesized in two different methods by using chemical and electrochemical oxidative polymerization.These modified electrodes provide large surface area for reaction,interfacial transport and biocompatible interface available for bacterial colonization and substrate transport.The polarization curves together with electrochemical impedance spectroscopy(EIS) measurements demonstrate that polyaniline modified anodes could greatly improve MFCs’ power output and decrease MFCs’ internal resistance.Our experimental results also prove that embedding polyaniline into 3D macroporous metallic scaffold is a promising method for MFC anode fabrication.

关键词： Microbial fuel cell anode polyaniline stainless steel fiber felt polymerization

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

Ethylene Oligomerization and Polymerization: Alternative Iron Catalysts beyond 2,6-Bisiminopyridyl Iron Complexes

引用

复旦学报（自然科学版） 2005年第5期44卷 838-839页

作者： Suyun Jie Shu Zhang Wenjuan Zhang Yingxia Song junxian hou Wen-Hua Sun Key Laboratory of Engineering Plastics Institute of Chemistry Chinese Academy of Sciences Beijing 100080 China

Polyolefin industry arrives the option to transfer from multiple-site systems of the classical Ziegler-Natta catalysts to more sophisticated single-site catalysts. The late-transition metal compounds were traditionally assumed with poor polymerization properties due to the highly competitive chain-termination step, and produced the short-chain oligomers up to 40 carbon atoms (SHOP catalysts). Recently the polyolefins employing latetransition metal complexes as catalysts became a hot research subject with the pioneering works by Brookhart and Gibson. It is promising for nickel catalysts to use solely ethylene as monomer for highly branched polyethylenes, and the designed nickel catalysts were not useful in industry. It is critical time to investigate the relationship of coordination modes of nickel complexes and its catalytic activities and the properties of resultant polyethylenes.

关键词：聚乙烯低聚反应催化剂铁化合物聚合物

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Composition Modeling and Equivalence of an Integrated Power Generation System of Wind, Photovoltaic and Energy Storage Unit

引用

中国电机工程学报 2011年第34期31卷 I0001-I0001,11页

作者： WANG Haohuai TANG Yong hou junxian ZOU Jiangfeng LIANGShuang SU Feng China Electrical Power Research Institute Haidian District Beijing 100192 China Yingda Taihe Property Insurance CO. LTD. Dongcheng District Beijing 100005 China

利用间接组合建模的方法,在建立典型的双馈风机、光伏发电单元和储能单元的装置级机电暂态模型基础上,采用等值方法建立三者电站级的机电暂态模型,最终通过组合建模得到了风光储联合发电系统的机电暂态模型。在大型电力系统分析软件包的... 详细信息

利用间接组合建模的方法,在建立典型的双馈风机、光伏发电单元和储能单元的装置级机电暂态模型基础上,采用等值方法建立三者电站级的机电暂态模型,最终通过组合建模得到了风光储联合发电系统的机电暂态模型。在大型电力系统分析软件包的PSD-BPA暂态稳定程序中实现了风光储联合发电系统的仿真功能,通过典型算例和张北＂国家风光储输示范工程＂的仿真分析验证了模型的正确性,为风光储联合发电系统的并网研究提供了分析手段。

关键词：英文摘要内容介绍编辑工作期刊

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

ETHYLENE POLYMERIZATION AND OLIGOMERIZATION BY LATE TRANSITION METAL COMPLEXES

ETHYLENE POLYMERIZATION AND OLIGOMERIZATION BY LATE TRANSITI...

引用

International Symposium on Engineering Plastics EP’2001 Beijing

作者： Wen-Hua Sun Ning Zhu Leyong Wang Yong Chen Zilong Li Zhi Ma Lijun Li Changxing Shao Lingqin Han Yong Cui Haijian Yang Tianzhu Zhang Liyi Chen junxian hou Youliang Hu Xiuhua Li State Key Laboratory for Engineering Plastics Institute of Chemistry Chinese Academy of Sciences

＜正＞The past half-century has witnessed the most rapid scientific and technological development of polyolefins.[l]Driven by desiring to improve the properties of polyolefins materials,designing and modifying useful catalysts have been targeting,and organometallic or coordinate catalysts became one of the hottest research areas.Following the metallocene polymerization,[2]the polymerization using by late-transition metal

关键词：

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

提高互联电网暂态稳定性的大规模电池储能系统并网控制策略及应用

引用

电网技术 2013年第2期37卷 327-333页

作者：王皓怀汤涌侯俊贤訾鹏中国电力科学研究院北京市海淀区100192

在大规模电池储能系统现有平抑/平滑控制策略的基础上,提出了基于附加频率响应的并网控制策略,不仅能够兼容现有控制策略抑制新能源出力波动,还能较好地提高电力系统暂态稳定性。该控制策略包括3部分:现有平抑/平滑控制部分、附加频率... 详细信息

在大规模电池储能系统现有平抑/平滑控制策略的基础上,提出了基于附加频率响应的并网控制策略,不仅能够兼容现有控制策略抑制新能源出力波动,还能较好地提高电力系统暂态稳定性。该控制策略包括3部分:现有平抑/平滑控制部分、附加频率控制部分和总体限幅部分。平抑/平滑控制部分兼容现有控制策略从而有效降低间歇式新能源的功率波动;附加频率控制部分以系统频率为输入信号实现对频率的一次调整,从而提高系统的暂态稳定性;总体限幅部分根据电池的实际运行状态动态地调整各控制部分上下限,达到均衡和最大化地利用储能系统。在西北电网的酒泉风电基地进行了基于附加频率控制策略的初步应用研究,仿真结果显示该控制策略可以有效地提高电网的稳定性。基于使新能源+储能电站和常规机组具有相同或相似的暂态稳定支撑能力的原则,酒泉风电基地的储能/风电配比可设置在5%附近。

关键词：电池储能系统附加频率控制策略暂态稳定

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

光伏经多端柔性直流输电并网的控制研究

引用

电力系统保护与控制 2019年第4期47卷 65-72页

作者：王磊武小龙侯俊贤王铁柱教育部光伏系统工程研究中心(合肥工业大学) 安徽合肥230009 中国电力科学研究院北京100192

为解决大规模光伏电站远距离输电问题,采用光伏电站接入基于直流电压-有功功率-交流电压控制的多端柔性直流输电系统的并网方案。利用Matlab/Simulink仿真软件构建了一个包含两座光伏电站和一个无源网络的五端柔性直流输电系统模型,并... 详细信息

为解决大规模光伏电站远距离输电问题,采用光伏电站接入基于直流电压-有功功率-交流电压控制的多端柔性直流输电系统的并网方案。利用Matlab/Simulink仿真软件构建了一个包含两座光伏电站和一个无源网络的五端柔性直流输电系统模型,并对该系统的运行特性进行了详细的仿真分析。仿真结果表明,当光伏电站的输出功率发生波动时,五端柔直系统传输的有功功率可实现自动平衡;当电网发生三相短路故障时,光伏电站依然能够稳定运行,具有较好的故障穿越能力。

关键词：光伏并网多端柔性直流输电故障穿越控制策略仿真分析

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

电活性生物膜生长过程中电荷与传质阻抗的变化规律

引用

科学通报 2016年第33期61卷 3616-3622页

作者：侯俊先刘中良李艳霞周宇北京工业大学环境与能源工程学院教育部传热强化与过程节能重点实验室北京100124

电活性生物膜因为能直接向胞外产生电子,将生物能直接转化成电能,所以近年来已经成为国际领域内的研究热点.在电活性生物膜内部,一方面存在着复杂的生物电化学过程,另一方面微生物及生物膜生长又涉及复杂的质量传递过程.本文针对电活性... 详细信息

电活性生物膜因为能直接向胞外产生电子,将生物能直接转化成电能,所以近年来已经成为国际领域内的研究热点.在电活性生物膜内部,一方面存在着复杂的生物电化学过程,另一方面微生物及生物膜生长又涉及复杂的质量传递过程.本文针对电活性生物膜不同生长阶段的质量传递损失和电荷传递损失展开研究,以期找到在不同时期内其产能的限制因素,这将对于电活性生物膜性能的改善具有至关重要的作用.本研究结果表明,80 h时,电荷传递阻抗占总内阻的99.8%.因此在电活性生物膜运行初期,电荷传递阻抗成为限制其产能的主要因素.随着运行时间的增长,电荷传递阻抗的比例不断下降,430和460 h时分别为86.9%和72.9%.运行到500 h后,电荷传递阻抗的比例下降到33.1%.然而此时,传质阻抗的占比上升到38.6%.因此当电荷性生物膜逐渐成熟时,电荷阻抗和传质阻抗共同成为其产能的限制因素.因此在电活性生物膜不同生长阶段,采用不同的方法来降低其对应的内阻对提高产电性能至关重要.

关键词：电活性生物膜微生物燃料电池电化学传质阻抗电荷阻抗

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：