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纳微快报:英文版 2023年第11期15卷 317-348页

作者： Yuxin Gong Bo wang Huaizheng Ren Deyu Li DianLong Wang Huakun Liu Shixue Dou MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage State Key Laboratory of Urban Water Resource and EnvironmentSchool of Chemistry and Chemical EngineeringHarbin Institute of TechnologyHarbin 150001HeilongjiangPeople’s Republic of China Key Laboratory of Advanced Energy Materials Chemistry(Ministry of Education) College of ChemistryNankai UniversityTianjin 300071People’s Republic of China Institute of Energy Material Science University of Shanghai for Science and TechnologyShanghai 200093People’s Republic of China

The last several years have witnessed the prosperous development of zinc-ion batteries(ZIBs),which are considered as a promising competitor of energy storage systems thanks to their low cost and high safety.However,the reversibility and availability of this system are blighted by problems such as uncontrollable dendritic growth,hydrogen evolution,and corrosion passivation on anode side.A functionally and structurally well-designed anode current collectors(CCs)is believed as a viable solution for those problems,with a lack of summarization according to its working mechanisms.Herein,this review focuses on the challenges of zinc anode and the mechanisms of modified anode CCs,which can be divided into zincophilic modification,structural design,and steering the preferred crystal facet orientation.The possible prospects and directions on zinc anode research and design are proposed at the end to hopefully promote the practical application of ZIBs.

关键词： Zinc anodes Current collectors Surface modification Structural design Crystal facet orientation

Bifunctional flame retardant solid-state electrolyte toward safe Li metal batteries

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能源化学:英文版 2023年第6期81卷 613-622,I0014页

作者： Qiang Lv Yajie Song Bo wang Shangjie wang Bochen Wu Yutong Jing Huaizheng Ren Shengbo Yang Lei wang Lihui Xiao DianLong Wang Huakun Liu Shixue Dou MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage State Key Laboratory of Urban Water Resource and EnvironmentSchool of Chemistry and Chemical EngineeringHarbin Institute of TechnologyHarbin 150001HeilongjiangChina School of Chemistry and Chemical Engineering Harbin Institute of TechnologyHarbin 150001HeilongjiangChina Institute for Superconducting&Electronic Materials Australian Institute of Innovative MaterialsUniversity of WollongongWollongongNSW 2500Australia Institute of Energy Material Science University of Shanghai for Science and TechnologyShanghai 200093China

Solid polymer electrolytes(SPEs)are one of the most promising alternatives to flammable liquid electrolytes for building safe Li metal batteries.Nevertheless,the poor ionic conductivity at room temperature(RT)and low resistance to Li dendrites seriously hinder the commercialization of SPEs.Herein,we design a bifunctional flame retardant SPE by combining hydroxyapatite(HAP)nanomaterials with Nmethyl pyrrolidone(NMP)in the PVDF-HFP matrix.The addition of HAP generates a hydrogen bond network with the PVDF-HFP matrix and cooperates with NMP to facilitate the dissociation of Li TFSI in the PVDF-HFP matrix.Consequently,the prepared SPE demonstrates superior ionic conductivity at RT,excellent fireproof properties,and strong resistance to Li dendrites.The assembled Li symmetric cell with prepared SPE exhibits a stable cycling performance of over 1200 h at 0.2 m A cm^(-2),and the solid-state LiFePO_4||Li cell shows excellent capacity retention of 85.3%over 600 cycles at 0.5 C.

关键词： Solid polymer electrolytes Safe Li metal batteries Li dendrites Hydroxyapatite N-methyl pyrrolidone PVDF-HFP Fireproof property

Effects of Al,F dual substitutions on the structure and electrochemical properties of lithium manganese oxide

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Journal of University of Science and Technology Beijing 2008年第2期15卷 182-186页

作者： Tingfeng Yi Xinguo Hu DianLong Wang Huibin Huo School of Chemistry and Chemical Engineering Anhui University of Technology Maanshan 243002 China Department of Applied Chemistry Harbin Institute of Technology Harbin 150001 China

Spinel LiMn2O4 and F, Al-doped spinel LiAl0.05Mn1.95O3.58F0.02 have been synthesized by a soft chemistry method using adipic acid as the chelating agent. The synthesized spine/materials were characterized by differential thermal analysis （DTA） and thermogravimetery （TG）, X-ray diffraction （XRD）, scanning electron microscopy （SEM）, cyclic voltammetry （CV）, and chargedischarge testing. The results indicate that all the samples have high phase purity, and fluorine is important in controlling the morphology; the doped aluminum enhances the stability of spinel LiMn2O4. The charge-discharge tests indicate that LiAl0.05Mn1.95O4 has high capacity retention, which is 92.60% of the initial after 50 cycles. It is found that the novel compound LiAl0.05Mn1.95O3.98F0.02 with smaller particles can offer much higher capacity, whose initial discharge capacity is 126.5 mAh·g^-1. The cyclic voltammetric experiments disclose the enhanced reversibility of the F, Al^3＋-modified spinel as compared with the undoped spinel.

关键词： lithium ion battery cathode material soft chemistry method structure electrochemical properties

Optimal Control of a Universal Rotating Magnetic Vector for Petal-shaped Capsule Robot in Curve Environment

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Chinese Journal of Mechanical Engineering 2014年第5期27卷 880-889页

作者： ZHANG Yongshun BAI Jianwei CHI Minglu CHENG Cunxin wang dianlong Key Laboratory for Precision and Non-Traditional Machining of Ministry of Education Dalian University of Technology

Steering control of a capsule robot in curve environment by magnetic navigation is not yet solved completely.A petal-shaped capsule robot with less steering resistance based on multiple wedge effects is presented,and an optimization method with two processes for determining the orientation of a pre-applied universal magnetic spin vector is proposed.To realize quick and non-contact steering swimming,a fuzzy comprehensive evaluation method for optimizing the steering driving angle is presented based on two evaluation indexes including the average steering speed and the average steering trajectory deviation,achieving the initial optimal orientation of a universal magnetic spin vector.To further reduce robotic magnetic vibration,a main target method for optimizing its final orientation,which is used for fine adjustment,is employed under the constrains of the magnetic moments.Swimming experimental results in curve pipe verified the effectiveness of the optimization method,which can be effectively used to realize non-contact steering swimming of the petal-shaped robot and reduce its vibration.

关键词： petal-shaped capsule robot universal magnetic spin vector fuzzy comprehensive evaluation method main target method

Communication-Based Attacks Detection in Android Applications

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Tsinghua Science and Technology 2019年第5期24卷 596-614页

作者： Chuan Ma Tao wang Limin Shen Dongkui Liang Shuping Chen dianlong You School of In formation Science and Engineering Yanshan University the Key Laboratory for Computer Virtual Technology and System Integration of Hebei Province Qinhuangdao 066004 China School of Business Ad mi nisliatiom Hebei Normal University of Science and Technology. Qinhuangdao 066004 China Library of Yanshan University. Yanshan University Qinhuangdao 066004 China

The Android operating system provides a rich Inter-Component Communication(ICC) method that brings enormous convenience. However, the Android ICC also increases security risks. To address this problem, a formal method is proposed to model and detect inter-component communication behavior in Android applications. Firstly,we generate data flow graphs and data facts for each component through component-level data flow analysis.Secondly, our approach treats ICC just like method calls. After analyzing the fields and data dependencies of the intent, we identify the ICC caller and callee, track the data flow between them, and construct the ICC model. Thirdly,the behavior model of Android applications is constructed by a formal mapping method for component data flow graph based on Pi calculus. The runtime sensitive path trigger detection algorithm is then given. Communicationbased attacks are detected by analyzing intent abnormity. Finally, we analyze the modeling and detection efficiency,and compare it with relevant methods. Analysis of 57 real-world applications partly verifies the effectiveness of the proposed method.

关键词： Android inter-component communication intents component hijacking attack detection

First-principles investigation of structural and electronic properties of oxygen adsorbing phosphorene

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Progress in Natural Science:Materials International 2019年第3期29卷 316-321页

作者： Zhiqiang wang dianlong Zhao Shidong Yu Zikai Nie Yuwei Li Lijun Zhang Key Laboratory of Automobile Materials of MOE and School of Materials Science and Engineering Jilin University North China Institute of Aerospace Engineering

Two-dimensional （2D） phosphorene has been extensively studied for potential electronic and optoelectronic applications.It is easily oxidized by adsorbing oxygen in the air,exhibiting changed materials stability and properties.Yet the impact of oxygen concentrations on stability and electronic properties of oxygen adsorbing phosphorene has never been systematically investigated.In this article,the oxygen adsorbing phosphorene at different oxygen concentrations are studied via first-principles crystal structure searches.We considered stoichiometries of P;O,P;O;) P;O and P;O;with both single-side and dual-side adsorption for selected case P;O.The energetically stable structure of each stoichiometry is identified.It has been found that the band gaps show rather wide range change,strongly depending on the oxygen concentration.Interestingly,at the higher oxygen concentration the relatively low band gaps and small carrier effective masses emerge,comparable with the pristine black phosphorus.This may be associated with the appearance of bridged P-O-P bonds as oxygen concentration increasing.The electronic properties are discussed in relation to structural features and chemical bonding.

关键词： Phosphorene Oxygen adsorption Electronic structures First-principles calculations

Synergistic coupling among Mg2B2O5,polycarbonate and N,N-dimethylformamide enhances the electrochemical performance of PVDF-HFP-based solid electrolyte

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Journal of Energy Chemistry 2024年第7期94卷 158-168页

作者： Yutong Jing Qiang Lv Yujia Chen Bo wang Bochen Wu Cheng Li Shengbo Yang Zhipeng He DianLong Wang Huakun Liu Shixue Dou MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage State Key Laboratory of Urban Water Resource and EnvironmentSchool of Chemistry and Chemical EngineeringHarbin Institute of Technology Institute of Energy Material Science University of Shanghai for Science and Technology Institute for Superconducting&Electronic Materials Australian Institute of Innovative MaterialsUniversity of Wollongong

Polymer solid electrolytes (SPEs) based on the[solvate-Li+]complex structure have promising prospects in lithium metal batteries (LMBs) due to their unique ion transport mechanism.However,the solvation structure may compromise the mechanical performance and safety,hindering practical application of SPEs.In this work,a composite solid electrolyte (CSE) is designed through the organic–inorganic synergistic interaction among N,N-dimethylformamide (DMF),polycarbonate (PC),and Mg2B2O5in poly(vinylidene fluoride-co-hexafluoropropylene)(PVDF-HFP).Flame-retardant Mg2B2O5nanowires provide nonflammability to the prepared CSEs,and the addition of PC improves the dispersion of Mg2B2O5nanowires.Simultaneously,the organic–inorganic synergistic action of PC plasticizer and Mg2B2O5nanowires promotes the dissociation degree of LiTFSI and reduces the crystallinity of PVDF-HFP,enabling rapid Li ion transport.Additionally,Raman spectroscopy and DFT calculations confirm the coordination between Mg atoms in Mg2B2O5and N atoms in DMF,which exhibits Lewis base-like behavior attacking adjacent C–F and C–H bonds in PVDF-HFP while inducing dehydrofluorination of PVDF-HFP.Based on the synergistic coupling of Mg2B2O5,PC,and DMF in the PVDF-HFP matrix,the prepared CSE exhibits superior ion conductivity (9.78×10-4S cm-1).The assembled Li symmetric cells cycle stably for 3900 h at a current density of 0.1 m A cm-2without short circuit.The LFP||Li cells assembled with PDL-Mg2B2O5/PC CSEs show excellent rate capability and cycling performance,with a capacity retention of 83.3%after 1000cycles at 0.5 C.This work provides a novel approach for the practical application of organic–inorganic synergistic CSEs in LMBs.

关键词： Composite solid electrolytes Poly(vinylidene fluoride-co-hexafluoropropylene) Safe Li metal batteries Synergistic coupling effect

Recent advances in cathodes for all-solid-state lithium-sulfur batteries

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Chinese Chemical Letters 2023年第7期34卷 58-69页

作者： Shengbo Yang Bo wang Qiang Lv Nan Zhang Zekun Zhang Yutong Jing Jinbo Li Rui Chen Bochen Wu Pengfei Xu DianLong Wang MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage State Key Laboratory of Urban Water Resource and EnvironmentSchool of Chemistry and Chemical EngineeringHarbin Institute of TechnologyHarbin 150001China

Lithium-sulfur(Li-S)batteries have been regarded as the candidate for the next-generation energy storage system due to the high theoretical specific capacity(1675 m Ah/g), energy density(2600 Wh/kg)and the abundance of elemental sulfur, but the application of Li-S batteries is impeded by a series of problems. Recently, all-solid-state Li-S batteries(ASSLSBs) have drawn great attention because many drawbacks such as safety issues caused by metallic lithium anodes and organic liquid electrolytes can be overcome through the use of solid-state electrolytes(SEs). However, not only the problems brought by sulfur cathodes still exist, but more trouble arouses from the interfaces between SEs and cathodes, hampering the practical application of ASSLSBs. Therefore, in order to deal with the problems, enormous endeavors have been done on ASSLSB cathodes during the past few decades, including engineering of cathode active materials, cathode host materials, cathode binder materials and cathode structures. In this review, the electrochemical mechanism and existing problems of ASSLSBs are briefly introduced. Subsequently, the strategies for developing cathode materials and designing cathode structures are presented. Then there follows a brief discussion of SE problems and expectations, and finally, the challenges and perspectives of ASSLSBs are summarized.

关键词： All-solid-state Li-S battery Cathode active material Cathode host material Cathode structure Solid-state electrolyte

Study of Co-Ce coating and surface on pasted nickel electrodes substrate

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Rare Metals 2006年第z1期25卷 47-50页

作者： wang DianLong Wang Chunyu DAI Changsong SUN Dezhi Post Doctor Workstation of Environmental Protection Technology Corporation Harbin Institute of Technology Harbin 150001 China Department of Applied Chemistry Harbin Institute of Technology Harbin 150001 China Department of Applied Chemistry Harbin Institute of Technology Harbin 150001 China Department of Applied Chemistry Harbin Institute of Technology Harbin 150001 China Post Doctor Workstation of Environmental Protection Technology Corporation Harbin Institute of Technology Harbin 150001 China

The process of electroplating Co-Ce alloys on the nickel foam framework surface can improve electro-conductivity for active materials and nickel substrate interface. The results of inductive coupled plasma emission spectrometer (ICP), cyclic voltammetry (CV), scanning electron microscopy (SEM), X-ray diffraction (XRD) and electron probe microanalysis (EPMA) indicate that the Co-Ce coating chemical content of rare earth Ce 0.19wt.%-0.28wt.% can not only alter the microstructure of electroplating coating, but also accelerate the oxidation reaction of Co and improve its transfer rate of electric current conductivity to the active material particles. The grads-like distributing electro-conductive network of CoOOH is formed on the nickel substrate surface, which improves reversibility of pasted nickel electrode. The charging receptivity is improved by Co-Ce coating on the pasted nickel electrode substrate, and its specific discharging capacity is improved by 50%.

关键词： Co-Ce coating surface grades-like distributing electro-conductive networks

High donor-number and low content electrolyte additive for stabilizing zinc metal anode

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Journal of Energy Chemistry 2024年第8期95卷 626-635页

作者： Yuxin Gong Ruifan Lin Bo wang Huaizheng Ren Lei wang Han Zhang Jianxin wang Deyu Li Yueping Xiong DianLong Wang Huakun Liu Shixue Dou MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage State Key Laboratory of Urban Water Resource and Environment School of Chemistry and Chemical Engineering Harbin Institute of Technology Key Laboratory of Advanced Energy Materials Chemistry(Ministry of Education) College of Chemistry Nankai University Institute of Energy Material Science University of Shanghai for Science and Technology

The aqueous zinc ion batteries(AZIBs) are thought as promising competitors for electrochemical energy storage,though their wide application is curbed by the uncontrollable dendrite growth and gas evolution side reactions.Herein,to stabilize both zinc anodes and water molecules,we developed a modified electrolyte by adding a trace amount of N,N-diethylformanmide(DEF) into the ZnSO4electrolyte for the first time in zinc ion batteries.The effectiveness of DEF is predicted by the comparison of donor number and its preferential adsorption behavior on the zinc anode is further demonstrated by several spectroscopy characterizations,electrochemical methods,and molecular dynamics simulation.The modified electrolyte with 5% v.t.DEF content can ensure a stable cycling life longer than 3400 h of Zn‖Zn symmetric cells and an ultra-reversible Zn stripping/plating process with a high coulombic efficiency of 99.7%.The Zn‖VO2full cell maintains a capacity retention of 83.5% and a 104 mA h g-1mass capacity after 1000cycles.This work provides insights into the role of interfacial adsorption behavior and the donor number of additive molecules in designing low-content and effective aqueous electrolytes.

关键词： Aqueous zinc ion batteries Donor number Electrolyte additives Zinc anode Zinc dendrites