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Preparation of anatase TiO_2 with assistance of surfactant OP-10 and its electrochemical properties as an anode material for {3.thium ion batteries

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Rare Metals 2010年第5期29卷 505-510页

作者： yi jin,tan chunlin,li weishan,{3.,{4.,south china normal University,Guangzhou 510006,china school of chemistry and environment & {3. {4. of {4. technology on energy storage and power generation of guangdong higher {13. {14. South China Normal University Guangzhou China

With the assistance of nonionic surfactant （OP-10） and surface-selective surfactant （CH3.OOH）, anatase TiO2 was prepared as an anode material for {3.thium ion batteries. The morphology, the crystal structure, and the electrochemical properties of the prepared anatase TiO2 were characterized by scanning electron microscopy （SEM）, X-ray diffraction （XRD）, electrochemical impedance spectroscopy （EIS）, and galvanostatic charge and discharge test. The result shows that the prepared anatase TiO2 has high discharge capacity and good cyc{3.c stabi{3.ty. The maximum discharge capacity is 3.3.mAh.g^-1, and there is no significant capacity decay from the second cycle.

关键词： lithium ion batteries titanium dioxide sol-gel process electrochemical properties sttrfactants

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Temperature inversion enables superior stability for low-temperature Zn-ion batteries

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Journal of energy chemistry 2024年第4期91卷 245-253页

作者： Fu-Da Yu Zhe-Jian yi Rui-Yang li Wei-hao lin Jie Chen Xiao-Yue Chen yi-Ming Xie Ji-Huai Wu Zhang Lan Lan-Fang Que Bao-Sheng liu hao Luo Zhen-Bo Wang Engineering Research Center of environment-Friendly Functional Materials Ministry of EducationInstitute of Materials Physical ChemistryHuaqiao UniversityXiamen 361021FujianChina b2 school of Electronic Engineering Guangxi University of Science and TechnologyLiuzhou 545006GuangxiChina school of Materials Science and Engineering Xiamen University of TechnologyXiamen 361024FujianChina school of Materials Science and Engineering Zhengzhou UniversityZhengzhou 450001HenanChina MIIT key laboratory of Critical Materials technology for New {3. Conversion and {4. State Key Laboratory of Space Power-SourcesSchool of Chemistry and Chemical EngineeringHarbin Institute of TechnologyHarbin 150001HeilongjiangChina College of Materials Science and Engineering Shenzhen UniversityShenzhen 518071GuangdongChina

It is challenging for aqueous Zn-ion batteries(ZIBs)to achieve comparable low-temperature(low-T)performance due to the easy-frozen electrolyte and severe Zn ***,an aqueous electrolyte with a low freezing point and high ionic conductivity is *** with molecular dynamics simulation and multi-scale interface analysis(time of flight secondary ion mass spectrometry threedimensional mapping and in-situ electrochemical impedance spectroscopy method),the temperature independence of the V_(2)O_(5)cathode and Zn anode is observed to be ***,dominated by the solvent structure of the designed electrolyte at low temperatures,vanadium dissolution/shuttle is significantly inhibited,and the zinc dendrites caused by this electrochemical crosstalk are greatly relieved,thus showing an ab{4. temperature inversion *** the disclosure and improvement of the above phenomena,the designed Zn||V_(2)O_(5)full cell delivers superior low-T performance,maintaining almost 99%capacity retention after 9500 cycles(working more than 2500 h)at-20°*** work proposes a kind of electrolyte suitable for low-T ZIBs and reveals the inverse temperature dependence of the Zn anode,which might offer a novel perspective for the investigation of low-T aqueous battery systems.

关键词： Aqueous Zn-ion batteries Low-temperature performance Opposite temperature dependence Zndendrite growth Vanadium dissolution

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