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A polyethylene microsphere-coated separator with rapid thermal shutdown function for lithium-ion batteries

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Journal of Energy Chemistry 2020年第5期29卷 33-40页

作者： Chongrong Zhang Hui Li Shixuan Wang yuliang cao Hanxi Yang Xinping Ai Faping Zhong Hubei Key Lab of Electrochemical Power Sources College of Chemistry&Molecular ScienceWuhan UniversityWuhan 430072HubeiChina National Engineering Research Center of Advanced Energy Storage Materials Changsha 410205HunanChina

Thermal runaway is the main factor contributing to the unsafe behaviors of lithium-ion batteries(LIBs)in practical *** application of separators for the thermal shutdown has been proven as an effective approach to protecting LIBs from thermal *** this work,we developed a thermal shutdown separator by coating a thin layer of low-density polyethylene microspheres(PM)onto a commercial porous polypropylene(PP)membrane and investigated the thermal response behaviors of the as-prepared PM/PP separator in *** structural and thermal analysis results revealed that the coated PM layer had a porous structure,which facilitated the occurrence of normal charge-discharge reactions at ambient temperature,although it could melt completely and fuse together within very short time periods:3 s at 110℃and 1 s at 120℃,to block off the pores of the PP substrate,thereby cutting off the ion transportation between the electrodes and interrupting the battery ***,the PM/PP separator exhibits very similar electrochemical performance to that of a conventional separator at ambient ***,it performs a rapid thermal shutdown at an elevated temperature of^110℃,thus controlling the temperature rise and maintaining the cell in a safe *** to its synthetic simplicity and low cost,this separator shows promise for possible application in building safe LIBs.

关键词： Thermal shutdown Separator Safety Lithium-ion battery

Surface-engineering enhanced sodium storage performance of Na_3V_2(PO_4)_3 cathode via in-situ self-decorated conducting polymer route

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Science China Chemistry 2017年第12期60卷 1546-1553页

作者： Jiexin Zhang Tianci Yuan Haiying Wan Jiangfeng Qian Xinping Ai Hanxi Yang yuliang cao Hubei Key Laboratory of Electrochemical Power Sources College of Chemistry and Molecular Sciences Wuhan University Wuhan 430072 China Jincheng Abound Energy Ltd. Jincheng 048000 China

The key to the development of sodium ion battery is materials with a high rate capacity and cycle stability. Conducting coating is an efficient approach to improve electrochemical performance. As a case study, the Na_3V_2(PO_4)_3@PEDOT composite was prepared through an in-situ self-decorated conducting polymer route without further calcination. The Na_3V_2(PO_4)_3 electrode with a 7%poly(3,4-ethylenedioxythiophene)(PEDOT) coating can deliver an initial reversible capacity of 100 mA h g^(-1) at 1 cycle, and 82%capacity retention over 200 cycles. The results also show that the Na_3V_2(PO_4)_3 electrode without and with a thick PEDOT coating exhibits poor electrochemical performance, indicating that an appropriate coating layer is important for improving electronic conductivity and regulating Na-ion insertion. Therefore, this work offers possibility to promote the electrochemical performance of poor-conducting materials in sodium-ion batteries using an in-situ self-decorated conducting polymer.

关键词： PEDOT Na3V2(PO4)3 surface coating cathode sodium ion batteries

Enhanced cycling stability of antimony anode by downsizing particle and combining carbon nanotube for high-performance sodium-ion batteries

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Journal of Materials Science & Technology 2020年第20期52卷 81-88页

作者： Chuang Liu Fanxin Zeng Li Xu Shuangyu Liu Jincheng Liu Xinping Ai Hanxi Yang yuliang cao College of Chemistry and Molecular Sciences Hubei International Scientific and Technological Cooperation Base of Sustainable Resource and EnergyWuhan UniversityWuhan 430072China State Key Laboratory of Advanced Transmission Technology Global Energy Interconnection Research Institute Co.Ltd.Beijing 102211China EVE Energy Co.ltd. No.36Huifeng 7th RoadZhongkai Hi-Tech ZoneHuizhouChina

Antimony(Sb)nanoparticles(SbNP)encapsulated in multiwalled carbon nanotubes(MWCNTs)matrix has been fabricated by a facile two-step ball milling strategy,including a sand milling process to prepare Sb nanoparticles and following high-energy ball milling to synthesize SbNP-MWCNT *** an anode material for sodium-ion batteries(SIBs),the SbNP-MWCNT composite with high Sb content(80%)can deliver a reversible capacity of 471.1 mA hg^(-1)at 50 mA g^(-1)with an initial coulombic efficiency of 73.5%,excellent cycling stability(94.1%capacity retention at 800 mA g^(-1))and high rate capability(210.7 mA h g^(-1)at 3200 mA g^(-1)).The excellent electrochemical performance of the SbNP-MWCNT composite results from the synergistic effect of downsizing Sb particles and combining MWCNTs.

关键词： Antimony Nanoparticles Carbon nanotubes Anode Sodium ion battery Mechanical ball milling

High performance TiP_2O_7 nanoporous microsphere as anode material for aqueous lithium-ion batteries

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Science China Chemistry 2019年第1期62卷 118-125页

作者： Yunping Wen Yao Liu Duan Bin Zhuo Wang Congxiao Wang yuliang cao Xinping Ai Yongyao Xia Collaborative Innovation Center of Chemistry for Energy Materials Department of Chemistry Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials Institute of New Energy Fudan University Hubei Key Laboratory Electrochem Power Sources College of Chemistry and Molecular Science Wuhan University

This work developed a facile way to mass-produce a carbon-coated TiP_2O_7 nanoporous microsphere(TPO-NMS) as anode material for aqueous lithium-ion batteries via solid-phase synthesis combined with spray drying method. TiP_2O_7 shows great prospect as anode for aqueous rechargeable lithium-ion batteries(ALIBs) in view of its appropriate intercalation potential of-0.6 V(vs. SCE) before hydrogen evolution in aqueous electrolytes. The resulting sample presents the morphology of secondary microspheres(ca. 20 μm) aggregated by carbon-coated primary nanoparticles(100 nm), in which the primary nanoparticles with uniform carbon coating and sophisticated pore structure greatly improve its electrochemical performance. Consequently, TPONMS delivers a reversible capacity of 90 mA h/g at 0.1 A/g, and displays enhanced rate performance and good cycling stability with capacity retention of 90% after 500 cycles at 0.2 A/g. A full cell containing TPO-NMS anode and LiMn_2O_4 cathode delivers a specific energy density of 63 W h/kg calculated on the total mass of anode and cathode. It also shows good rate capacity with56% capacity maintained at 10 A/g rate(vs. 0.1 A/g), as well as long cycle life with the capacity retention of 82% after 1000 cycles at 0.5 A/g.

关键词： aqueous lithium-ion batteries H2 evolution reaction anode TiP2O7 spray drying

Durable and enhanced immunity against SARS-CoV-2 elicited by manganese nanoadjuvant formulated subunit vaccine

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Signal Transduction and Targeted Therapy 2024年第1期9卷 47-50页

作者： Mengyu Guo Mingjing cao Jiufeng Sun Ziwei Chen Xin Wang Lianpan Dai George F.Gao yuliang Zhao Yaling Wang Chunying Chen CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety&CAS Center for Excellence in Nanoscience National Center for Nanoscience and Technology of ChinaBeijingChina Guangdong Provincial Institute of Public Health Guangdong Provincial Center for Disease Control and PreventionGuangzhouChina CAS Key Laboratory of Pathogen Microbiology and Immunology Institute of MicrobiologyBeijingChina

Dear editor,Vaccines are the most efficient and effective means to prevent infectious diseases,but improving the long-term protective efficacy is still a major challenge in contemporary vaccine development.1 The waning immunity varies depending on the diversification of the pathogen and the number of booster doses.1 Strategies to overcome this warrant is using adjuvants that amplify the immune response,and drive the production of memory B and T cells or long-lived plasma cells that recognize the pathogen for durable protection.2–4 Although existing adjuvants have achieved promising results,research on generating durable protective immunity is lacking in promoting vaccine development and staying ahead of global pandemics such as coronavirus disease 2019(COVID-19).The precisely designed nanoadjuvants can enhance lymph node targeting and increase antigenpresenting cell(APCs)uptake,achieving the co-delivery of adjuvants and antigens and activating innate and adaptive immune responses.5 Previously,we reported a manganese nanoadjuvant(MnARK)and receptor-binding domain(RBD)monomer antigen formulated nanovaccine.6 MnARK transported antigens to lymph nodes,activated the STING pathway,elicited strong neutralizing abilities and increased immune memory T cell percentage against the infection of severe acute respiratory syndrome coronavirus 2(SARS-CoV-2).6 Regarding the long-term protection potential of MnARK for subunit vaccine development,we further explored the durable immune regulation abilities of MnARK to a SARS-CoV-2 RBD dimer antigen,which has been used in an approved COVID-19 subunit vaccine ZF2001 with aluminum adjuvant(alum).7,8 TEM result revealed that RBD dimer could interact with BSA on MnARK surface and epitope can be well preserved(Supplementary Fig.1a).The size and zeta potential of MnARK-RBD dimer nanovaccine was~58 nm and-14 mV,respectively(Supplementary Fig.1b,c).

关键词： manganese immunity protective

Improved Initial Charging Capacity of Na-poor Na0.44MnO2 via Chemical Presodiation Strategy for Low-cost Sodium-ion Batteries

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Chemical Research in Chinese Universities 2021年第2期37卷 274-279页

作者： ZHOU Xi LAI Yangyang WU Xiangjiang CHEN Zhongxue ZHONG Faping Al Xinping YANG Hanxi cao yuliang Engineering Research Center of Organosilicon Compounds and Materials of Ministry of Education College of Chemistry and Molecular SciencesWuhan UniversityWuhan430072P.R.China Key Laboratory of Hydraulic Machinery Transients Ministry of EducationSchool of Power and Mechanical EngineeringWuhan UniversityWuhan430072P.R.China National Engineering Research Center of Advanced Energy Storage Materials Hunan410205P.R.China

Sodium-ion batteries(SIBs)are promising for grid-scale energy storage applications due to the natural abundance and low cost of *** various Na insertion cathode materials,Na0.44MnO2 has attracted the most attention because of its cost effectiveness and structural ***,the low initial charge capacity for Na-poor Na0.44MnO2 hinders its practical ***,we developed a facile chemical presodiated method using sodiated biphenly to transform Na-poor Na0.44MnO2 into Na-rich *** presodiation,the initial charge capacity of Na0.44MnO2 is greatly enhanced from 56.5 mA·h/g to 115.7 mA·h/g at 0.1 C(1 C=121 mA/g)and the excellent cycling stability(the capacity retention of 94.1%over 200 cycles at 2 C)is *** presodiation strategy would open a new avenue for promoting the practical applications of Na-poor cathode materials in sodium-ion batteries.

关键词： Sodium-ion battery Na0.44MnO2 Chemical presodiation Sodium biphenyl Initial charge capacity

LiOH: A "double-edged" effect toward electrochemical oxidation of Li_(2)O_(2)

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Journal of Energy Chemistry 2021年第6期30卷 401-405,I0010页

作者： Qinghua Cui Lipo Ma Peng Zhang yuliang cao Jiawei Wang Laboratory of Advanced Spectro-electrochemistry and Lithium-ion Batteries Dalian National Laboratory for Clean EnergyDalian Institute of Chemical PhysicsChinese Academy of SciencesDalian 116023LiaoningChina State Key Laboratory of Electroanalytical Chemistry Changchun Institute of Applied ChemistryChinese Academy of SciencesChangchun 130022JilinChina Department of Materials Science&Engineering Academy for Advanced Interdisciplinary StudiesShenzhen Key Laboratory of Solid State BatteriesGuangdong Provincial Key Laboratory of Energy Materials for Electric PowerSouthern University of Science and TechnologyShenzhen 518055GuangdongChina College of Chemistry and Molecular Sciences Engineering Research Center of Organosilicon Compounds&Materials of Ministry of EducationWuhan UniversityWuhan 430072HubeiChina Institute of Materials Engineering Beijing Institute of Collaborative InnovationBeijing 100094China

The aprotic lithium-oxygen battery(Li-O_(2) battery) has attracted much attraction for the future advanced battery technologies due to its ultra-high theoretical energy density that can well meet the ever-growing ener... 详细信息

关键词： Lithium-oxygen batteries LiOH-doped Li_(2)O_(2) Li_(2)O_(2)oxidation Differential electrochemical mass spectrometer Isotope-labelling

C/Cu多孔微球固载Co3O4纳米片作为锂离子电池的高性能负极材料

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Science China Materials 2023年第12期66卷 4575-4586页

作者：孙逊张珺张华然曹余良周金平 Hubei Engineering Center of Natural Polymer-based Medical Materials Engineering Research Center of Organosilicon Compounds&Materials of Ministry of EducationDepartment of ChemistryWuhan UniversityWuhan 430072China College of Material Engineering Xuzhou Vocational College of Industrial TechnologyXuzhou 221000China

过渡金属氧化物(TMOs)用作电极材料时,会在循环过程中产生严重的体积变化,并且其自身的导电率也较低,因此它的电化学性能较差.设计和开发独特的TMOs纳米结构并将其与导电碳基底相结合是改善其电化学性能的有效策略.本工作中,我们设计了... 详细信息

过渡金属氧化物(TMOs)用作电极材料时,会在循环过程中产生严重的体积变化,并且其自身的导电率也较低,因此它的电化学性能较差.设计和开发独特的TMOs纳米结构并将其与导电碳基底相结合是改善其电化学性能的有效策略.本工作中,我们设计了一种C/Cu多孔微球,并通过原位合成在碳壁上垂直生长Co_(3)O_(4)纳米片.作为导电基底,C/Cu多孔微球提供了多尺度孔隙网络和大的电极/电解质接触界面,显著改善了电子和离子扩散动力学.原位合成的Co_(3)O_(4)纳米片牢牢地固定在碳壁上,从而提高了复合微球在长期循环中的结构稳定性.得益于独特的结构特征,用作锂离子电池负极材料的C/Cu@Co_(3)O_(4)复合多孔微球表现出优异的倍率性能、高充电比容量和出色的循环稳定性.

关键词： C/Cu microspheres multiscale pore structure chitinderived carbon mesoporous Co_(3)O_(4)nanosheets anode materials

Amorphous NaVOPO_(4)as a High-Rate and Ultrastable Cathode Material for Sodium-Ion Batteries

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CCS Chemistry 2021年第10期3卷 2428-2436页

作者： Yongjin Fang Jiexin Zhang Faping Zhong Xiangming Feng Weihua Chen Xinping Ai Hanxi Yang yuliang cao College of Chemistry and Molecular Sciences Hubei Key Laboratory of Electrochemical Power SourcesWuhan UniversityWuhan 430072 2National Engineering Research Center of Advanced Energy Storage Materials Changsha 410205 3College of Chemistry and Molecular Engineering Zhengzhou UniversityZhengzhou 450001

The low cost and profusion of sodium resources make sodium-ion batteries(SIBs)a potential alternative to lithium-ion batteries for grid-scale energy storage ***,the use of conventional cathode materials for Na-ion intercalation/deintercalation cannot satisfy the requirements of high-powered and long lifespan performance due to multiphase transition and lattice confinement.

关键词： amorphous NaVOPO_(4) cathod e materials polyanion single-phase-like mechanism sodium-ion batteries