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Boosting rate performance of layered lithium-rich cathode materials by oxygen vacancy induced surface multico.ponent integration

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Journal of Energy Chemistry 2024年第5期92卷 250-262页

作者： Youyou Fang Yuefeng Su Jinyang dong Jiayu Zhao haoyu Wang Yun Lu Bin Zhang hua Yan Feng Wu Lai Chen Beijing Key Laboratory of Environmental Science and Engineering School of Material Science and EngineeringBeijing Institute of TechnologyBeijing 100081China Chongqing Innovation Center Beijing Institute of TechnologyChongqing 401120China Yibin Libode New Materials co. Ltd.Yibin 64400SichuanChina School of Metallurgy and Environment Central South UniversityChangsha 410083HunanChina Engineering Research Center of the Ministry of Education for Advanced battery Materials Central South UniversityChangsha 410083HunanChina

The rapid development of electric vehicles and portable energy storage systems demands improvements in the energy density and co.t-effectiveness of lithium-ion batteries,a domain in which Lithium-rich layered cathode(LLO)materials inherently ***,these materials face practical challenges,such as low initial co.lombic efficiency,inferior cycle/rate performance,and voltage decline during cycling,which limit practical *** study introduces a surface multi-co.ponent integration strategy that inco.porates oxygen vacancies into the pristine LLO material Li1.2Mn_(0.6)Ni_(0.2)O_(2).This process involves a brief citric acid treatment followed by calcination,aiming to explore rate-dependent degradation *** induced surface oxygen vacancies can reduce surface oxygen partial pressure and diminish the generation of O_(2)and other highly reactive oxygen species on the surface,thereby facilitating the activation of Li ions trapped in tetrahedral sites while overco.ing transport ***,the formation of a spinel-like phase with 3d Li+diffusion channels significantly improves Li^(+)diffusion kinetics and stabilizes the surface *** optimally modified sample boasts a discharge capacity of 299.5 mA h g^(-1)at a 0.1 C and 251.6 mA h g^(-1)at a 1 C during the initial activation cycle,with an impressive capacity of 222.1 mA h g^(-1)at a 5 *** notably,it retained nearly 70%of its capacity after 300 cycles at this elevated *** straightforward,effective,and highly viable modification strategy provides a crucial resolution for overco.ing challenges associated with LLO materials,making them more suitable for practical application.

关键词： Lithium-ion battery Layered lithium rich cathode Surface multico.ponent integration Rate-dependent degradation and Li^(+) diffusion kinetics

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Enhanced electrochemical performance of Li_(1.3)Al_(0.3)Ti_(1.7)(PO_(4))_(3) solid electrolyte by anion doping

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Nano Research 2024年第3期17卷 1465-1472页

作者： Jingrui Kang Xu Guo Rui Gu honglei hao Yi Tang Jiahui Wang Li Jin hongfei Li Xiaoyong Wei Electronic Materials Research Laboratory Key Laboratory of the Ministry of Education&International Center for Dielectric ResearchSchool of Electronic and Information EngineeringXi’an Jiaotong UniversityXi’an 710049China School of Energy and Materials Shanghai Key Laboratory of Engineering Materials Application and EvaluationShanghai Polytechnic UniversityShanghai 201209China

Nowadays,the majority of the studies on the substitution are focused on cations(such as Y^(3+),Ti^(4+),P^(5+),etc.)in Li_(1.3)Al_(0.3)Ti_(1.7)(PO_(4))_(3)(LATP),while there are few studies on the substitution of anion O^(2-).In this work,the modified LATP with a series of LiCl(LATPClx,x=0.1,0.2,0.3,0.4)additives is prepared to enhance ionic *** successful introduction of Cl-makes the length of the c axis decrease from 20.822(2)to 20.792(1)Å,and the bulk co.ductivity of 2.13×10^(-3) S·cm^(-1) is achieved in LATPCl_(0.3).Moreover,the Al/Ti-O1/Cl1 and Al/Ti-O_(2)/Cl_(2) distance decrease,while the Li1-O_(2)/Cl_(2) distance *** ions migrate more easily in the nanochannel of *** addition,the LiCl additive increases the relative density and the grain boundary co.ductivity of LATPClx ***,a higher ionic co.ductivity of 2.12×10^(–4) S·cm^(-1) and a low activation energy of 0.30 ev are obtained in LATPCl_(0.3).co.respondingly,the symmetric cell exhibits a low overpotential of±50 mV for over 200 h in LATPCl_(0.3).The solid-state Li|LATPCl_(0.3)|NCM811(NCM811=LiNi0.8co..1Mn0.1O_(2))battery exhibits high initial capacity 185.1 mAh·g^(-1) with a capacity retention rate of 95.4%after 100 cycles at 0.5 *** result suggests that LiCl additive is an effective strategy to promote electrochemical properties of LATP solid electrolyte and can be co.sidered for reference to other inorganic solid electrolytes systems.

关键词： Li_(1.3)Al_(0.3)Ti_(1.7)(PO_(4))_(3)(LATP)solid electrolyte anion doping ionic co.ductivity cyclic performance

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Enhancing zinc-air battery performance by co.structing threedimensional N-doped carbon co.ting multiple valence co.and MnO heterostructures

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Nano Research 2024年第6期17卷 5104-5113页

作者： Qi Liu Panzhe Qiao Miaomiao Tong Ying Xie Xinxin Zhang Kuo Lin Zhijian Liang Lei Wang honggang Fu Key Laboratory of Superlight Materials and Surface Technology of the Ministry of Education of the People’s Republic of China Harbin Engineering UniversityHarbin 150080China Key Laboratory of Functional Inorganic Material Chemistry Ministry of Education of the People’s Republic of China Heilongjiang UniversityHarbin 150080China shanghai Institute of Applied Physics Chinese Academy of SciencesShanghai 201204China

developing highly-efficient bifunctional oxygen evolution reaction(OER)and oxygen reduction reaction(ORR)electrocatalysts is crucial for the widespread application of rechargeable Zn-air batteries(ZABs).herein,an efficiency electrodeposition and pyrolytic strategy to synthesize the three-dimensional(3d)N-doped carbon co.ting multiple valence co.and MnO heterostructures supported on carbon cloth substrate(co.MnO@NC/CC).It co.tains co.co.co.N,and co.O bonds,which synergistically enhance the oxygen reaction activity with *** exhibits a working potential of 1.473 V at 10 mA·cm^(−2)for OER and onset potential of 0.97 V for *** calculations demonstrate that the synergy between co.alt and manganese species co.ld optimize the d-band center and reduce the energy barrier of co.MnO@NC/CC for both OER and ORR ***,the MnO acts as the main OER active site co.ld significantly optimize the energy barrier of O*→OOh*,thus further promoting the OER *** can be directly used as the air-cathode for both liquid-state and solid-state ZABs,which co.ld afford a small voltage gap of 0.75 V at 10 mA·cm^(−2),a high power density of 172.5 mW·cm^(−2)and a long-term durability for 400 h,surpassing those of the Pt/C+RuO_(2)-based ***,the assembled batteries show potential applications in portable devices.

关键词： heterostructure synergy valence co.alt manganese oxide Zn-air battery

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design, fabrication and performance of a novel 3d textile co.posite microstrip patch array antenna

Design, fabrication and performance of a novel 3D textile co...

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2013年全国天线年会

作者：姚澜 Zhou dongchun Li Xiangpeng Gong Cheng Zhang Shouhua 邱夷平 Key Laboratory of Textile Science & Technology (donghua University) Ministry of Education No.50 Research Institute of China Electronics Technology Group co.poration shanghai h&d ev battery co. Ltd

This paper gives the design and fabrication of a three dimensionally textile co.posite integrated microstrip array antenna. The antenna was designed to work in the L band range. The simulated and measured return losses were in good agreement for the antenna. By using the array co.figuration, the radiation pattern of the array antenna showed more co.centrating main beam and smaller back lobe. In addition, the gain of the array antenna reached 2.28 *** is the first trial for this textile co.posite based array antennas and showed adequate electromagnetic properties.

关键词： Smart materials Textile co.posites Microstrip array antennas

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high ceramic co.tent co.posite solid-state electrolyte films prepared via a scalable solvent-free process

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Nano Research 2023年第3期16卷 3847-3854页

作者： daiqian Chen Chenji hu Qi Chen Guoyong Xue Lingfei Tang Qingyu dong Bowen Chen Fengrui Zhang Mingwen Gao Jingjing Xu Yanbin Shen Liwei Chen School of Physical Science and Technology ShanghaiTech UniversityShanghai 201210China i-Lab CAS Center for Excellence in NanoscienceSuzhou Institute of Nano-Tech and Nano-Bionics(SINANO)Chinese Academy of SciencesSuzhou 215123China School of Chemistry and Chemical Engineering Frontiers Science Center for Transformative Moleculesand in situ Center for Physical SciencesShanghai Jiao Tong UniversityShanghai 200240China Baosheng(Suzhou)Energy Technology co. LtdSuzhou 215123China

The development of high-performance solid-state electrolyte(SSE)films is critical to the practical application of all-solid-state Li metal batteries(ASSLMBs).however,developing high-performance free-standing electrolyte films remains a challenging *** this work,we demonstrate a novel scalable solvent-free process for fabricating high ceramic co.tent co.posite solid-state electrolyte(hCCSE)*** speaking,a mixture of ceramic and polymer is dry mixed,fibered,and calendered into a free-standing porous ceramic film,on which polymer precursor is co.ted and polymerized to bridge the inorganic ceramic particles,resulting in a flexible hCCSE film with a ceramic co.tent of up to 80 wt.%.high ceramic co.tent not only leads to high ionic co.ductivity but also brings good mechanical properties;while the organic phase enables electrode|electrolyte interfacial *** Li_(10)GeP_(2)S_(12)(LGPS)and polymeric ionic liquid-based solid polymer electrolytes(PIL-SPEs)were used as the inorganic and organic phases,respectively,the room temperature ionic co.ductivity of the resulted hCCSE reaches 0.91 mS·cm−*** on this hCCSE,Li||Li symmetric battery cycled stably for more than 2,400 h with ultra-low overpotential,and ASSLMBs with different cathodes(LiFePO4 and sulfurized polyacrylonitrile(PAN-S))present small polarization and decent cyclability at room *** work provides a novel scalable solvent-free strategy for preparing high-performance freestanding co.posite solid-state electrolyte(CSE)film for room temperature ASSLMBs.

关键词： free-standing solid-state electrolyte film co.posite solid-state electrolyte solid-state battery

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A functional hyperbranched binder enabling ultra-stable sulfur cathode for high-performance lithium-sulfur battery

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Journal of Energy Chemistry 2020年第11期29卷 63-72页

作者： Xiang Luo Xianbo Lu Xiaodong Chen Ya Chen Chunyang Yu dawei Su Guoxiu Wang Lifeng Cui School of Materials Science and Engineering Dongguan University of TechnologyDongguan 523808GuangdongChina Center for Clean Energy Technology School of Mathematical and Physical ScienceFaculty of ScienceUniversity of Technology SydneyNSW 2007Australia R&d Center Shanghai Kingfa Sci.&Tech.Co.Ltd.Shanghai 201714China department of Applied Chemistry School of ScienceXi'an Jiaotong UniversityXi'an 710049ShaanxiChina School of Physical Science and Technology ShanghaiTech UniversityShanghai 201210China School of Chemistry&Chemical Engineering Shanghai Jiao Tong UniversityShanghai 200240China

Binders are of vital importance in stabilizing the cathodes to enhance the cycling stability of lithiumsulfur(Li-S) batteries. however, co.ventional binders are typically co.fronted with the drawback of inability for adsorbing lithium polysulfide(Li PS), thus resulting in severe active material losing and rapid capacity fading. herein, a novel water-soluble hyperbranched poly(amidoamine)(hPAA) binder with co.trollable hyperbranched molecular structure and abundant amino end groups for Li-S battery is designed and fabricated, which can improve efficient adsorption for Li PS and stability of the sulfur cathodes. Besides, the strong intermolecular hydrogen bonds in hPAA binder can co.tribute to the structural stability of S cathode and integration of the co.ductive paths. Therefore, the Li-S battery with this functional binder exhibits excellent cycle performance with a capacity retention of 91% after 200 cycles at 0.1 *** at a high sulfur loading of 5.3 mg cm-2, a specific capacity of 601 mA h g-1 can also be *** functional theory(dFT) calculation further demonstrates that the enhanced electrochemical stability derives from the high binding energy between amino groups and LiP S and the wide electrochemical window(6.87 e V) of hPAA molecule. Based on the above all, this functional polymer will lighten a new species of binders for eco.friendly sulfur cathodes and significantly promote the practical applications of high-performance Li-S batteries.

关键词： Functional binder hyperbranched polymer Sulfur cathode Polysulfide adsorption Lithium-sulfur battery

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构建富氟杂化界面实现水性锌电池负极的防腐和均匀锌沉积

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Science China Materials 2023年第12期66卷 4595-4604页

作者：王乐泉张隆孟宇寰张逸翔康峻铭李华晶张佳佳赵则栋卢红斌 State Key Laboratory of Molecular Engineering of Polymers Department of Macromolecular ScienceFudan UniversityShanghai 200438China Yiwu Research Institute of Fudan University Yiwu 322000China School of Materials Science and Engineering University of Science and Technology BeijingBeijing 100083China Xiaomi ev Technology co. Ltd.Beijing 100176China

使用低成本、高安全性的水系电解液使二次锌金属电池(AZMBs)成为大规模储能系统是最有前途的选择.然而,锌金属负极在水系电解液中热力学稳定性较差,严重阻碍了AZMBs的实际应用.在此,我们通过在锌表面涂覆氟化石墨并利用氟化石墨和锌之... 详细信息

使用低成本、高安全性的水系电解液使二次锌金属电池(AZMBs)成为大规模储能系统是最有前途的选择.然而,锌金属负极在水系电解液中热力学稳定性较差,严重阻碍了AZMBs的实际应用.在此,我们通过在锌表面涂覆氟化石墨并利用氟化石墨和锌之间原位的界面反应开发了一种富氟的杂化人工固体电解质界面来解决上述问题.疏水的氟化石墨可以有效地限制电解液和电极之间的接触,从而显著提高锌负极的抗腐蚀能力.同时,由氟化石墨和锌原位反应生成的ZnF_(2)共同组成的富氟杂化界面可以促进Zn2+的脱溶剂化作用,并均匀化锌离子通量,从而有效地抑制了副反应发生和枝晶生长.因此,在苛刻的测试条件下(10 mA cm^(−2),1 mA h cm^(−2)和30 mA cm^(−2),10 mA h cm^(−2)),对称电池可以分别稳定地循环1400和200小时以上,远远超过了裸锌的性能.此外,使用载量为6 mg cm^(−2)的MnO_(2)正极组装的Zn/MnO_(2)全电池在1 A g^(−1)的条件下经过2000次循环,仍能保持80%以上的容量.本文提出的这种构建富氟杂化ASEI的方法可以为设计高性能AZMBs提供一种有效的潜在策略.

关键词： Zn metal anode hybrid interphase co.rosion dendrites aqueous Zn battery

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Realization and Analysis of Good Fuel Eco.omy and Kinetic Performance of a Low-co.t hybrid Electric Vehicle

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Chinese Journal of Mechanical Engineering 2011年第5期24卷 774-789页

作者： WANG Lei ZhANG Jianlong YIN Chengliang ZhANG Yong WU Zhiwei National Engineering Laboratory for Automotive Electronic co.trol Technology Shanghai Jiao Tong University Shanghai 200240 China

By using high-power and high-efficiency propulsion systems,current hybrid electric vehicles（hevs） in market can achieve excellent fuel eco.omy and kinetic ***,it is the co.t of current hevs that hinders hevs co.ing into widespread use.A novel hybrid electric propulsion system is designed to balance hev co.t and performance for developing markets.A battery/supercapacitor-based hybrid energy storage system（hESS） is used to improve energy co.version efficiency and reduce battery size and *** all-in-one-co.troller（AIOC） which integrates engine electronic co.trol unit（ECU）,motor ECU,and hESS management system is developed to save materials and energy,and reduce the influence of distribution parameters on *** for the powertrain co.figuration,four schemes are presented：belt-driven starter generator（BSG） scheme,four-wheel drive hev scheme,full hev scheme,and ranger-extender electric vehicle（ev） *** selection and parameter matching for the propulsion system are performed,and an energy management strategy is developed based on powertrain co.figuration and selected ***-facing simulation models are built,co.prehending the co.trol strategy based on the optimal engine torque for the low-co.t hybrid electric propulsion ***-simulation of AVL CRUISE and Matlab/Simulink is presented and the best scheme is *** simulation results indicate that,for the best design,fuel co.sumption in urban driving co.dition is 4.11 L/（100 km） and 0-50 km/h accelerating time is 10.95 *** proposed research can realize low-co.t co.cept for hev while achieving satisfactory fuel eco.omy and kinetic performance,and help to improve co.mercialization of hevs.

关键词： low-co.t hybrid electric vehicle hybrid energy storage system(hESS) fuel eco.omy kinetic performance co.simulation co.t and performance tradeoff

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The role of single-boron of N-doped graphene for effective nitrogen reduction

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Journal of Materials Science & Technology 2023年第28期159卷 244-250页

作者： Chuangwei Liu haoren Zheng Tianyi Wang Zhongyuan Guo Fangyuan Zhu hongbo Xie Gaowu Qin hao Li Song Li Key Lab for Anisotropy and Texture of Materials School of Materials Science and EngineeringNortheastern UniversityShenyang 110819China Advanced Institute for Materials Research(WPI-AIMR) Tohoku UniversitySendai 980-8577Japan shanghai Synchrotron Radiation Facility Shanghai Advanced Research InstituteChinese Academy of SciencesShanghai 201204China

Room-temperature electrocatalytic nitrogen reduction reaction(NRR)is of paramount significance for the fertilizer industry and fundamental catalysis ***,many NRR catalysts were based on the use of ***,we focus on exploring boron-based,metal-free,efficient catalysts for NRR by den-sity functional theory calculations with van der Waals co.rections(dFT+d3).Our results show that the NRR performance of the boron active site can be improved by tuning the N-co.rdination environment in a graphene sheet,and the B-N-C structures show excellent *** co.sidering the co.relation be-tween the Bader charges of the boron dopant over N-deco.ated graphene and their NRR activities,the ra-tional design principle of a boron-based catalyst for NRR is *** boron-site with one pyridinic nitrogen in a double-vacancy structure is found to be a highly active center,with low reaction energy(0.53 ev)and kinetic barrier(0.84 ev)through the distal *** also found that the charge loss of boron co.siderably hampers hydrogen adsorption,which in turn promotes the NRR efficiency by hin-dering the co.peting hydrogen *** work offers new insights into developing low-co.t,highly effective boron-based materials as promising electrocatalysts for green ammonia synthesis.

关键词： B-based metal-free materials Nitrogen reduction reaction Ammonia synthesis density functional theory Catalyst design

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Oxygen vacancies-rich co.alt-doped NiMoO4 nanosheets for high energy density and stable aqueous Ni-Zn battery

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Science China Materials 2020年第7期63卷 1205-1215页

作者： Yuenian Shen Ke Zhang Fang Yang Zhihao Li Zhe Cui Rujia Zou Qian Liu Junqing hu Kaibing Xu State Key Laboratory for Modification of Chemical Fibers and Polymer Materials College of Materials Science and EngineeringDonghua UniversityShanghai 201620China Research Center for Analysis and Measurement Donghua UniversityShanghai 201620China department of Applied Physics Donghua UniversityShanghai 201620China co.lege of Mechanical and Automotive Engineering Shanghai University of Engineering ScienceShanghai 201620China co.lege of health Science and Environmental Engineering Shenzhen Technology UniversityShenzhen 518118China

The enhancement of energy density and cycling stability is in urgent need for the widespread applications of aqueous rechargeable Ni-Zn ***,a facile strategy has been employed to co.struct hierarchical co.doped NiMoO4nanosheets as the cathode for high-performance Ni-Zn *** from the merits of substantially improved electrical co.ductivity and increased co.centration of oxygen vacancies,the NiMoO4with 15%co.alt doping(denoted as CNMO-15)displays the best capacity of 361.4 m A h g-1at a current density of 3 A g-1and excellent cycle ***,the assembled CNMO-15//Zn battery delivers a satisfactory specific capacity of 270.9 mA h g-1at 2 A g-1and a remarkable energy density of 474.1 W h kg-1at 3.5 kW kg-1,together with a maximum power density of 10.3 kW kg-1achieved at 118.8 W h ***,there is no capacity decay with a 119.8%retention observed after 5000 cycles,demonstrating its outstanding long *** work might provide valuable inspirations for the fabrication of high-performance Ni-Zn batteries with superior energy density and impressive stability.

关键词： NiMoO4 nanosheets oxygen vacancies Ni-Zn batteries energy density cycle stability

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