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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

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 conductivity 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 conductivity of LATPClx ***,a higher ionic conductivity of 2.12×10^(–4) S·cm^(-1) and a low activation energy of 0.30 eV are obtained in LATPCl_(0.3).Correspondingly,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=liNi0.8Co0.1Mn0.1O_(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 considered 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 conductivity cyclic performance

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Catalytic anode surface enabling in situ polymerization of gel polymer electrolyte for stable li metal batteries

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Nano Research 2024年第6期17卷 5216-5223页

作者： Guocheng li Kang liang Yuanjian li Xiangrui Duan lin Fu Zhao Cai Zhaofu Zhang Jiangnan Dai Yongming Sun Wuhan National Laboratory for Optoelectronics Huazhong University of Science and TechnologyWuhan 430074China The Institute of Technological Sciences Wuhan UniversityWuhan 430074China Faculty of Materials Science and Chemistry China University of Geoscience(Wuhan)Wuhan 430074China

Employing quasi-solid-state gel polymer electrolyte(GPE)instead of the liquid counterpart has been regarded as a promising strategy for improving the electrochemical performance of li metal ***,the poor and uneven interfacial contact between li metal anode and GPE could cause large interfacial resistance and electrochemical li stripping/plating inhomogeneity,deteriorating the electrochemical ***,we proposed that the functional component of composite anode could work as the catalyst to promote the in situ polymerization reaction,and we experimentally realized the integration of polymerized-dioxolane electrolyte and li/li_(22)Sn_(5)/liF composite electrode with low interfacial resistance and good stability by in situ catalyzation ***,the reaction kinetics and stability of metallic li anode were significantly *** a demonstration,symmetric cell using such a GPE-li/li_(22)Sn_(5)/liF integration achieved stable cycling beyond 250 cycles with small potential hysteresis of 25 mV at 1 mA·cm^(−2)and 1 mAh·cm^(−2),far outperforming the counterpart regular GPE on pure *** with liNi0.5Co0.3Mn0.2O2,the full cell with the GPE-li/li_(22)Sn_(5)/liF integration maintained 85.7%of the original capacity after 100 cycles at 0.5 C(1 C=200 mA·g^(−1)).Our research provides a promising strategy for reducing the resistance between GPE and li metal anode,and realizes li metal batteries with enhance electrochemical performance.

关键词： catalyzation polymerization interface resistance interfacial stability li metal batteries electrochemical performance

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Vinyltrimethylsilane as a novel electrolyte additive for improving interfacial stability of li-rich cathode working in high voltage

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Chinese Chemical Letters 2024年第2期35卷 534-538页

作者： Bing Jiang Hao li Bi Luo Lehao liu lihua Chu Qiaobao Zhang Meicheng li State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources School of New EnergyNorth China Electric Power UniversityBeijing 102206China State Key Laboratory of Physical Chemistry of Solid Surfaces College of MaterialsXiamen UniversityXiamen 361005China

Boosting the interfacial stability between electrolyte and li-rich cathode material at high operating voltage is vital important to enhance the cycling stability of li-rich cathode materials for high-performance li-ion *** this work,vinyltrimethylsilane as a new type of organic silicon electrolyte additive is studied to address the interfacial instability of li-rich cathode material at high operating *** cells using vinyltrimethylsilane additive shows the high capacity retention of 73.9%after 300 cycles at 1 C,whereas the cells without this kind of additive only have the capacity retention of 58.9%.The improvement of stability is mainly attributed to the additive helping to form a more stable surface film for li-rich cathode material,thus avoiding direct contact between the electrolyte and the cathode material,slowing down the dissolution of metal ions and the decomposition of the electrolyte under high operating *** findings in this work shed some light on the design of stable cycling performance of li-rich cathode toward advanced li-ion batteries.

关键词： Vinyltrimethylsilane Electrolyte additive li-rich cathode Interfacial stability Capacity retention

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某转向齿扇摇臂轴断齿失效分析

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热加工工艺 2012年第12期41卷 202-204页

作者：李品芳林少芬陈景锋戴乐阳集美大学轮机工程学院福建厦门361021

通过对化学成分、金相组织及渗碳层显微硬度的检测,结合断口形貌观察,分析了某转向齿扇摇臂轴齿轮断齿的原因。结果表明:扇形锥齿轮齿根槽角处的刀痕和折叠等加工缺陷,导致齿根部位产生应力集中,是断齿的主要原因;而齿轮渗碳层的高碳势... 详细信息

通过对化学成分、金相组织及渗碳层显微硬度的检测,结合断口形貌观察,分析了某转向齿扇摇臂轴齿轮断齿的原因。结果表明:扇形锥齿轮齿根槽角处的刀痕和折叠等加工缺陷,导致齿根部位产生应力集中,是断齿的主要原因;而齿轮渗碳层的高碳势稍有过热组织促进了轮齿的疲劳断裂。

关键词：转向齿扇摇臂轴断齿加工缺陷渗碳层

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模糊综合评判在港口船舶溢油风险区划中的应用

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交通环保 1999年第2期20卷 12-14页

作者：李品芳黄加亮集美航海学院厦门361021

阐明港口船舶溢油风险区划的必要性，提出了应用模糊综合评判进行溢油风险区划的方法，给出算例并加以讨论。

关键词：溢油风险区划模糊综合评判港口船舶污染

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Congener-derived template to construct lithiophilic organic-inorganic layer/interphase for high volumetric capacity dendrite-free li metal batteries

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Chinese Chemical Letters 2024年第3期35卷 453-460页

作者： Kang Yang Long li Yuanbin Xiao Qiaoli Zhang Chenpeng Xi Borong li Yan Yu Chengkai Yang Key Laboratory of Advanced Materials Technologies International(HongKong Macao and Taiwan)Joint Laboratory on Advanced Materials TechnologiesCollege of Materials Science and EngineeringFuzhou UniversityFuzhou 350108China

The development of lithium-metal batteries(LMBs)is seriously restricted by the out-of-control dendrites growth and infinite volume ***,a pervasive organic-inorganic layer construction strategy is reported for the composite lithium metal anode with congener-derived organic-inorganic solid electrolyte interphase(SEI).In this strategy,the organic-inorganic Ag@polydopamine(Ag@PDA)layer is coated on the arbitrary substrates by a simple two-step *** thin and stable congener-derived SEI is insitu formed with fewer inorganic components and more organic components during charging/*** polydopamine with sufficient adhesion groups and lithiophilic Ag layer realize near-zero nucleation overpotential during lithium *** low interface resistance and stable lithium deposition are ***,the practical areal and volumetric capacities of the composite anode with three-dimensional copper(3DCu)as the substrate are 10 mAh/cm^(2)and 1538 mAh/cm^3(*** mass of anode).The symmetrical cell shows very low polarization voltage(10 mV)and more than 2500 h cycles life at 1 mA/cm^(2)(1 mAh/cm^(2)).The liNi_(0.8)Co_(0.1)Mn_(0.1)O_(2)(NCM811)-based full cells show improved capacity retention(82%)after 100 cycles at 0.5 *** modified lithiophilic anode with congener-derived interphase provides a promising strategy to realize the next-generation dendrite-free LMBs.

关键词： lithium metal anode Congener-derived lithiophilicity Volumetric capacity Organic-inorganic interphase

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Anion competition for li^(+)solvated coordination environments in poly(1,3 dioxolane)electrolyte to enable high-voltage lithium metal solid-state batteries

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Journal of Energy Chemistry 2024年第9期96卷 633-641页

作者： Qiujun Wang Yanqiang Ma Xiaomeng Jia Di Zhang Zhaojin li Huilan Sun Qujiang Sun Bo Wang li-Zhen Fan Hebei Key Laboratory of Flexible Functional Materials School of Materials Science and EngineeringHebei University of Science and TechnologyShijiazhuang 050000HebeiChina Beijing Advanced Innovation Center for Materials Genome Engineering Institute of Advanced Materials and TechnologyUniversity of Science and Technology BeijingBeijing 100083China

Gel-based polymer electrolytes are limited by the polarity of the residual solvent,which restricts the coupling-breaking behaviour during li^(+)conduction,resulting in the li^(+)transport kinetics being greatly ***,we designed anion competitive gel polymer electrolyte(ACPE)by introducing lithium difluoro(oxalato)borate(liDFOB)anion into the 1,3-dioxolane(DOL)in situ polymerisation *** enhances the ionic dipole interaction between li^(+)and the solvent molecules and synergizes with li^(+)across the solvation site of the polymer ethylene oxide(EO)unit,combination that greatly improves the li^(+)transport *** a result,ACPE exhibits 1.12 mS cm^(−1)ionic conductivity and 0.75 li^(+)transfer number at room ***,this intra-polymer solvation sheath allows preferential desolvation of DFOB−,which contributes to the formation of kinetically stable anion-derived interphase and effectively mitigates side *** results demonstrate that the assembled li||NCM622 solid-state battery exhibits lifespan of over 300 cycles with average Coulombic efficiency of 98.8%and capacity retention of 80.3%.This study introduces a novel approach for ion migration and interface design,paving the way for high-safety and high-energy-density batteries.

关键词： li-metal batteries Poly(1,3-dioxolane) In situ polymerization Solid-state polymer electrolytes Anion competition

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Polyimide covalent organic frameworks as efficient solid-state li^(+) electrolytes

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Science China Chemistry 2024年第5期67卷 1647-1652页

作者： Xu liu Shi Wang Siqi liu Chengfang liu Xiangchun li Jian Wu Dazhi li Shihao Xu Chongyang liu Wen-Yong Lai State Key Laboratory of Organic Electronics and Information Displays(SKLOEID) Institute of Advanced Materials(IAM)School of Chemistry and Life SciencesNanjing University of Posts&TelecommunicationsNanjing 210023China

Covalent organic frameworks(COFs) are attractive porous crystalline materials with extremely high stability, easy functionalization, and open channels, which are expected to be unique ion conductors/transporters in lithium ion batteries(liBs). Despite recent advances, low ion conductivity and low transference number, resulting in low charging/discharging rate, low energy density, and short battery life, are the main issues that limit their direct application as solid electrolytes in liBs. Here, we designed and synthesized a novel polyimide COF, namely, TAPA-PDI-COF, with abundant C=O groups, which has been successfully employed as high-performance solid electrolytes by doping TAPA-PDI-COF and succinonitrile(SN). Both the well-defined nanochannels of COFs and SN confined in the well-aligned channels restricted the free migration of anions, while C=O on COFs and CN groups of SN enhanced li^(+) transport, thus achieving a high ion conductivity of 0.102 m S cm^(-1)at 80 °C and a high lithium-ion transference number of 0.855 at room temperature. According to density functional theory(DFT)calculations, li-ion migration mainly adopted in-plane transport rather than the axial pathway, which may be due to the shorter hopping distances in the planar pathway. The results suggest an effective strategy for the design and development of all-solidstate ionic conductors for achieving high-performance liBs.

关键词： lithium ion batteries(liBs) covalent organic frameworks(COFs) solid-state ion conductors solid-state electrolytes ion conductivity

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O3协同SCR处理船舶柴油机废气排放的试验

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中国航海 2019年第3期42卷 19-22,33页

作者：张琢尹钊李品芳曾步辉尹自斌集美大学轮机工程学院

为提高船用柴油机低负荷下选择性催化还原(Selective Catalytic Reduction,SCR)反应器的NOx 转化率,采用O 3协同SCR进行排气处理试验研究。试验研究结果表明:柴油机在40%负荷率以下的低负荷工况,SCR反应器不工作的情况下,排气管中注入O3... 详细信息

为提高船用柴油机低负荷下选择性催化还原(Selective Catalytic Reduction,SCR)反应器的NOx 转化率,采用O 3协同SCR进行排气处理试验研究。试验研究结果表明:柴油机在40%负荷率以下的低负荷工况,SCR反应器不工作的情况下,排气管中注入O3,NO2/NO 浓度比得以提高;柴油机在20%负荷率工况下,NO2/NO浓度比达到30%。同时,O3可有效地降低柴油机烟度( K 值)和HC的排放,其排放浓度与注入O3前相比,最高降幅分别达到51%和19.1%。柴油机在30%负荷率以下的低负荷工况,SCR反应器按氨氮比1 ∶1的标定尿素喷射量喷入尿素时,SCR反应器前的排气管注入O3与注入O3前相比,SCR反应器中NOx 转化率得以提高,最高增幅达到32.1%。主要原因在于排气管中注入O3,NO2/NO 浓度比升高,促进SCR反应器中NOx 催化还原的快速反应。排气管注入O3后,在SCR反应器工作的情况下,SCR反应器后的烟度( K 值)降低,HC排放也稍有降低。试验表明:O3协同SCR有利于柴油机在低负荷下提高SCR反应器的NOx 转化率。

关键词：船舶柴油机废气排放臭氧选择性催化还原

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羽毛球男、女子单打不同线路杀球质量对比分析——以2018年落户中国国际赛事中的20场比赛为例

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安徽体育科技 2022年第1期43卷 45-49,72页

作者：于莉黄江林李品芳贵州师范大学体育学院贵州贵阳550001 广州体育学院体育教育学院广东广州510500

对比分析羽毛球男、女子单打不同线路杀球质量的差异为我国羽毛球运动员提供参考。采用文献研究法、录像观察法、数理统计法和TOPSIS分析法。结果显示:(1)男单杀球直接得分的能力要整体强于女单,尤以直线和小斜线杀球为体现;而女单大斜... 详细信息

对比分析羽毛球男、女子单打不同线路杀球质量的差异为我国羽毛球运动员提供参考。采用文献研究法、录像观察法、数理统计法和TOPSIS分析法。结果显示:(1)男单杀球直接得分的能力要整体强于女单,尤以直线和小斜线杀球为体现;而女单大斜线杀球得分的能力更强。(2)男单杀球得分率高于女单,女单杀球的继续攻率、均势率、被反击率要高于男单。(3)杀球质量TOPSIS综合评价中,中区小斜线为男单最高,正手小斜线为女单最高,两者最低均为正手区直线。

关键词：羽毛球男子单打女子单打杀球质量 TOPSIS分析法

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