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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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Variation and abrupt change of climate in Ili River Basin, Xinjiang

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Journal of Geographical Sciences 2010年第5期20卷 652-666页

作者： sun huilan Key Laboratory of Oasis Ecology and Desert Environment Xinjiang Institute of Ecology and Geography CAS Urumqi 830011 China Xinjiang Institute of Ecology and Geography CAS Urumqi 830011 China Graduate University of Chinese Academy of Sciences Beijing 100039 China

In this paper, the monthly precipitation and temperature data collected at 7 stations in the Ili River Basin from 1961 to 2007 were analyzed by means of simple regression analysis, running mean, db6 wavelet function and Mann-Kendall test. This study revealed the characteristics of climate change and abrupt change points of precipitation and temperature during different time scales in the Ili River Basin within the past 50 years, The results showed that the precipitation increased from the mid-1980s until 2000 and has continued to increase at a smaller magnitude since 2000. Over the studied period, the precipitation increased significantly during the summer and winter months. The temperature increased greatly in the late 1980s, and has continued to show an increasing trend from the year 2000 to present, The temperature increases were most significant during the summer, autumn and winter months. In terms of different geographies, the temperature increase was significant during the winter in the plains and hilly regions; the increase was also significant during autumn in the inter- montane basins. The climate change trends in the Ili River Basin were consistent with the changing trends of the North Atlantic Oscillation and the plateau monsoon.

关键词： climate changes abrupt change IU River Basin

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Hierarchically designed MoWSe_(2)/WO_(3)/C anode for fast and efficient Na+storage

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Journal of Energy Chemistry 2023年第5期80卷 291-301,I0008页

作者： Jian Wang Yachuan Shao Fei Yuan huilan sun Di Zhang Zhaojin Li S.Ramesh H.J.Woo Bo Wang Centre for Ionics University of Malay1 Department of PhysicsFaculty of ScienceUniversity of MalayaKuala Lumpur 50603Malaysia Hebei Key Laboratory of Flexible Functional Materials School of Materials Science and EngineeringHebei University of Science and TechnologyShjiazhuang 0500000HebeiChina

Exploring anode materials with high energy and power density is one of the critical milestones in developing sodium-ion batteries/capacitors(SIBs/SICs).Here,the Mo and W-based bimetallic organic framework(Mo-W-MOF)with core-shell structure is first formed by a facile strategy,followed by a selenization and carbonization strategy to finally prepare multileveled Mo WSe_(2)/WO_(3)/C anode materials with core-shell petal like curled nanosheet *** the petal(MoSe_(2))-core(WO_(3))structure,the formation of WSe_(2)flakes by partial selenization on the surface of WO_(3)serves as a heterogeneous connection between MoSe_(2)and WO_(3).The enlarged layer distance(0.677 nm)between MoSe_(2)and WSe_(2)can facilitate the rapid transfer of Na+and *** density functional theory(DFT)calculations verify that the Mo WSe_(2)/WO_(3)/C heterostructure performs excellent metallic ***-situ X-ray diffraction(XRD),X-ray photoelectron spectroscopy(XPS),and transmission electron microscopy(TEM)confirm the activation process from the initial insertion reaction to the later conversion ***,when employed as the anode of SIBs,a remarkable capacity of 384.3 mA h g-1after 950 cycles at 10 A g^(-1)is ***,the SICs assembled with commercial activated carbon(AC)as the cathode exhibits a remarkable energy density of 81.86 W h kg^(-1)(at 190 W kg^(-1))and 72.83 W h kg^(-1)(at 3800 W kg^(-1)).The unique structural design and the reaction investigation of the electrode process can provide a reference for the development of transition metal chalcogenides anodes.

关键词： Multileveled MoWSe2/WO_(3)/C Structure change Heterostructure Metallic properties Enlarged lattice distance The activation process

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Synergistically enabling the interface stability of lithium metal batteries with soft ionic gel and garnet-type Li_(6.4)La_(3)Zr_(1.4)Ta_(0.6)O_(12)ceramic filler

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Journal of Materiomics 2023年第3期9卷 568-576页

作者： Qiujun Wang Weiqi Zhu Ya Su Di Zhang Zhaojin Li Huan Wang huilan sun Bo Wang Dan Zhou Li-Zhen Fan Hebei Key Laboratory of Flexible Functional Materials School of Materials Science and EngineeringHebei University of Science and TechnologyShijiazhuang050000China Beijing Advanced Innovation Center for Materials Genome Engineering Institute of Advanced Materials and TechnologyUniversity of Science and Technology BeijingBeijing100083China

Lithium metal batteries based on solid electrolytes are considered as promising candidates with high energy density and ***,the weak solid-solid contact between electrolyte and electrode can easily lead to interface instability and lithium ions discontinuous migration,which seriously reduces the electrochemical performance of the ***,we construct a soft gel interfacial layer to improve the stability of the solid-solid interface between electrolyte and electrode by means of polyester-based monomers and imidazole-based ionic *** on this,garnet-type Li_(6.4)La_(3)Zr_(1.4)Ta_(0.6)O_(12)(LLZTO)particles as inorganic ceramic filler were introduced in the layer to obtain composite electrolytes with high ionic conductivity(up to 1.1×10^(-3)S/cm at 25℃).As a result,the assembled lithium symmetric battery of Li|THCE-15%LLZTO|Li suggests excellent cycling stability with 700 h at 0.1 mA/cm^(2)at 50℃,and the lithium metal batteries of LFP|THCE-15%LLZTO|Li delivers high initial discharge capacity of 128.2 mA·h/g with capacity retain of 75.48%after 150 cycles at 2 *** work paves a new route to build safe and stable lithium metal batteries with synergistic introduction of composite electrolytes between electrolyte and electrode using soft gel interfacial layer and inorganic filler.

关键词： Lithium metal batteries Ionic liquid In-situ polymerization Soft interfacial layer Composite electrolyte

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Alkyl chain modulation of asymmetric hexacyclic fused acceptor synergistically with wide bandgap third component for high efficiency ternary organic solar cells

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International Journal of Minerals,Metallurgy and Materials 2024年第7期31卷 1713-1719页

作者： Shufang Li huilan Guan Can Zhu Chaoyuan sun Qingya Wei Jun Yuan Yingping Zou College of Chemistry and Chemical Engineering Central South UniversityChangsha 410083China Beijing National Laboratory for Molecular Sciences CAS Key Laboratory of Organic SolidsInstitute of ChemistryChinese Academy of SciencesBeijing 100190China Institute of Carbon Neutrality and New Energy School of Electronics and InformationHangzhou Dianzi UniversityHangzhou 310018China

Herein,two asymmetric hexacyclic fused small molecule acceptors(SMAs),namely BP4F-HU and BP4F-UU,were *** elongated outside chains in the BP4F-UU molecule played a crucial role in optimizing the morphology of blend film,thereby improving charge mobility and reducing energy loss within the corresponding ***,the PM6:BP4F-UU device exhibited a higher open-circuit voltage(V_(oc))of 0.878 V compared to the PM6:BP4F-HU device with a V_(oc)of 0.863 ***,a new wide bandgap SMA named BTP-TA was designed and synthesized as the third component to the PM6:BP4F-UU host binary devices,which showed an ideal complementary absorption spectrum in PM6:BP4F-UU *** addition,BTP-TA can achieve efficient intermolecular energy transfer to BP4F-UU by fluorescence resonance energy transfer(FRET)pathway,due to the good overlap between the photoluminescence(PL)spectrum of BTP-TA and the absorption region of ***,ternary devices with 15wt%BTP-TA exhibits broader photon utilization,optimal blend morphology,and reduced charge recombination compared to the corresponding binary ***,PM6:BP4F-UU:BTP-TA ternary device achieved an optimal power conversion efficiency(PCE)of 17.83%with simultaneously increased V_(oc)of 0.905 V,short-circuit current density(J_(sc))of 26.14 mA/cm^(2),and fill factor(FF)of 75.38%.

关键词： asymmetric hexacyclic acceptor outside chain wide bandgap acceptor ternary organic solar cells

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A two-step strategy for constructing stable gel polymer electrolyte interfaces for long-life cycle lithium metal batteries

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Journal of Materiomics 2022年第5期8卷 1048-1057页

作者： Qiujun Wang Pin Zhang Weiqi Zhu Di Zhang Zhaojin Li Huan Wang huilan sun Bo Wang Li-Zhen Fan Hebei Key Laboratory of Flexible Functional Materials School of Materials Science and EngineeringHebei University of Science and TechnologyShijiazhuang050018China Beijing Advanced Innovation Center for Materials Genome Engineering Institute of Advanced Materials and TechnologyUniversity of Science and Technology BeijingBeijing100083China

Due to the high reactivity between the lithium metal and traditional organic liquid electrolyte,the reaction of lithium metal electrode is usually uneven and there are also unexpected side ***,construction of a stable solid electrolyte interface(SEI)is highly essential to improve the performance of lithium metal ***,a sandwich-like gel polymer electrolyte(GPE)is accurately prepared by in-situ polymerization of Polyacrylonitrile(PAN)nanofiber membrane with trihydroxymethylpropyl trimethylacrylate(TMPTMA)and 1,6-hexanediol diacrylate(HDDA).The resulting GPE with a tightly cross-linked gel skeleton exhibits high ionic conductivity and electrochemical window of 5.6 V versus Li/Li^(+).In particular,the pretreatment of Li metal anode can improve the interfacial wettability,and the synergy of the chemically pretreated Li metal anode surface and the GPE can electrochemically in situ generate SEI with compositionally stable and fluorine-rich inorganic *** to these unique advantages,the interfacial compatibility between the GPE and lithium metal is greatly ***,the formed SEI can inhibit the formation of lithium dendrites,and decomposition of GPE would be *** assembled Li-FEC|GPE|LiFePO_(4) full cell shows a high initial discharge capacity of 157.1 mA h g^(-1),and maintains a capacity retention of 92.3%after 100 cycles at 0.2C.

关键词： Gel polymer electrolyte Pre-lithiation Lithium-metal batteries In-situ polymerization

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慎重对待医学论文的版面压缩

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编辑学报 2015年第2期27卷 140-141页

作者：孙慧兰 <中山大学学报(医学科学版)>编辑部广州510080

一般来说优秀的医学论文论据都比较丰富,篇幅自然比较长,而期刊的版面是有一定限制的。医学期刊责任编辑,一定要慎重对待文稿的编辑加工,不可为节省版面而对文章进行不恰当的删减。借鉴国际医学期刊对医学论文各部分的一般要求,对医学... 详细信息

一般来说优秀的医学论文论据都比较丰富,篇幅自然比较长,而期刊的版面是有一定限制的。医学期刊责任编辑,一定要慎重对待文稿的编辑加工,不可为节省版面而对文章进行不恰当的删减。借鉴国际医学期刊对医学论文各部分的一般要求,对医学论文的编辑加工提出了缩版的原则和方法。

关键词：医学期刊编辑版面压缩国际医学期刊

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学术期刊应向审稿专家提供审稿辅助信息

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编辑学报 2009年第6期21卷 517-518页

作者：张冰孙慧兰 <中山大学学报>编辑部广州510275

为保障审稿专家顺利地、高质量地完成审稿任务,学术期刊应向审稿专家提供论文相关信息、期刊信息及责任编辑信息等辅助信息,提出了提供这些信息的途径和时机;论述了学术期刊向专家提供审稿辅助信息对其发展的积极影响。

关键词：论文信息期刊信息责任编辑信息审稿专家学术期刊

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Probe into the Therapy on Abnormal Colporrhagia after Drug Abortion

Probe into the Therapy on Abnormal Colporrhagia after Drug A...

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全国中青年中西医结合学术（英语）交流会议

作者： Cai Xuefen, Cai Xuexia, sun huilan The Affiliated Obstetrical and Gynecological Hospital of Zhejiang University Hangzhou, China

It is a good way to stop early pregnancy by using Mifepristone and Misoprostol. It could reduce the sufferings of the patients from operative abortion and avoid the risk of operative infection. But drug abortion often came to that the gestation remnant remained in the uterine cavity, which led to the abnormal colporrhagia, that is, the amount of bleeding was more than that of normal abortion and the bleeding time was much longer. To solve this problem, we tried to use the Xuejie Shenghua Decoction drew up by ourselves, and it was found that its curative effect was quite satisfactory.

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医学类一稿多投稿件退稿后发表情况分析

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中国科技期刊研究 2024年第3期35卷 339-345页

作者：余菁邬加佳孙慧兰徐杰高国全中山大学《中山大学学报(医学科学版)》编辑部广东省广州市510080 中山大学附属第三医院期刊中心《器官移植》编辑部广东省广州市510630 中山大学中山医学院广东省广州市510080

【目的】加强医学期刊编辑对一稿多投疑似学术不端稿件的辨别能力,为提升稿件初审准确性提供参考。【方法】以2021年1—12月《中山大学学报(医学科学版)》一稿多投退稿稿件为研究对象,追踪其发表情况,分析一稿多投投稿行为、发表期刊刊... 详细信息

【目的】加强医学期刊编辑对一稿多投疑似学术不端稿件的辨别能力,为提升稿件初审准确性提供参考。【方法】以2021年1—12月《中山大学学报(医学科学版)》一稿多投退稿稿件为研究对象,追踪其发表情况,分析一稿多投投稿行为、发表期刊刊期和入选数据库情况,以及构建一稿多投疑似学术不端稿件第一作者群体画像。【结果】2021年全年共发现91篇一稿多投疑似学术不端稿件在退稿后发表,其中55篇发表时作者姓名和单位发生变化。91篇发表论文中77篇(84.6%)发表在各类核心期刊上:27篇(29.7%)发表在《中文核心期刊要目总览》收录期刊上,17篇(18.7%)发表在中国科学引文数据库收录期刊上,68篇(74.7%)发表在中国科技核心期刊上。2021年全年214篇一稿多投疑似学术不端稿件第一作者群体画像具有如下特点:60%为女性,40%为男性;54%为中级职称,34%为副高级职称,也有部分在校学生;绝大多数教育背景为学士和硕士;集中在非省会非直辖市的三级医院;大多数为临床医生,较为集中地分布在内科、外科和影像科。【结论】建议医学期刊严格落实三审三校,通过建立学术不端检测技术流程、加大对作者的学术诚信教育力度、成立学术诚信联盟共享学术不端数据等防范学术不端。

关键词：医学期刊一稿多投学术不端发表

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