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NaV6O15:A promising cathode material for insertion/extraction of Mg^2+with excellent cycling performance

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Nano Research 2020年第2期13卷 335-343页

作者： Dongzheng Wu Jing Zeng Haiming Hua Junnan Wu Yang Yang jinbao zhao Collaborative Imnovation Center of Chemistry for Energy Materials State Key Lab of Physical Chemistry of Solid SurfacesState Province Joint Engineering Laboratory of Power Source Technology for New Energy VehicleEngineering Research Center of Electrochemical TechnologyMinistry of EducationCollege of Chemistry and Chemical Engineering Xiamen UniversityXiamen 361005China School of Chemical Engineering and Light Industry Guangdong University of TechnologyGuangzhou 510006China

The rechargeable magnesium batteries(RMBs)are getting more and more attention because of their high-energy density,high-security and ***,the high charge density of Mg^2+makes the diffusion of Mg2+in the conventional cathodes very slow,resulting in a lack of appropriate electrode materials for *** this work,we enlarge the layer spacing of V2Os by introducing Na^2+in the crystal structure to promote the diffusion kinetics of Mg^2+.The NaVeO15(NVO)synthesized by a facile method is studied as a cathode material for RMBs with the anhydrous pure Mg^2+*** a result,the NVO not only exhibits high discharge capacity(119.2 mAh:g^-1 after 100 cycles at the current density of 20 mA:g^-1)and working voltage(above 1.6 V ***^2+/Mg),but also expresses good rate ***,the eX-situ characterizations results reveal that the Mg^2+storage mechanism in NVO is based on the intercalation and *** density functional theory(DFT)calculation results further indicate that Mg^2+tends to occupy the semi-occupied sites of Na^+in the ***,the galvanostatic intermittent titration technique(GITT)demonstrates that NVO electrode has the fast diffusion kinetics of Mg^2+during discharge process ranging from 7.55×10^-13 to2.41×10^-11 cm^2·s^-*** work proves that the NVO is a potential cathode material for RMBs.

关键词： NaV6O15 alkali metal pre-intercalation rechargeable magnesium battery cathode electrochemical mechanism

High-rate performance magnesium batteries achieved by direct growth of honeycomb-like V_(2)O_(5)electrodes with rich oxygen vacancies

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Nano Research 2023年第4期16卷 4880-4887页

作者： Dongzheng Wu Yichao Zhuang Fei Wang Yang Yang Jing Zeng jinbao zhao College of Chemistry and Chemical Engineering State-Province Joint Engineering Laboratory of Power Source Technology for New Energy VehicleState Key Laboratory of Physical Chemistry of Solid SurfacesEngineering Research Center of Electrochemical TechnologyMinistry of EducationCollaborative Innovation Center of Chemistry for Energy MaterialsXiamen UniversityXiamen 361005China School of Chemical Engineering and Light Industry Guangdong University of TechnologyGuangzhou 510006China

Rechargeable magnesium batteries(RMBs)have emerged as a promising next-generation electrochemical energy storage technology due to their superiority of low price and high ***,the practical applications of RMBs are severely limited by immature electrode ***,the high-rate cathode materials are highly ***,we propose a dualfunctional design of V_(2)O_(5)electrode with rational honeycomb-like structure and rich oxygen vacancies to enhance the kinetics *** result demonstrates that oxygen vacancies can not only boost the intrinsic electronic conductivity of V_(2)O_(5),but also enhance the Mg^(2+)diffusion kinetics inside the cathode,leading to the good high-rate ***,ex-situ X-ray diffraction(XRD),transmission electron microscopy(TEM),and X-ray photoelectron spectroscopy(XPS)characterizations reveal that Mg^(2+)is mainly intercalated from the(101)plane of V_(2)O_(5)−X based on the insertion-type electrochemical mechanism;meanwhile,the highly reversible structure evolution during Mg^(2+)insertion/extraction is also *** work proposes that the dual-functional design of electrode has a great influence in enhancing the electrochemical performance of cathode materials for RMBs.

关键词： V2O5 rechargeable magnesium batteries oxygen vacancies kinetics electronic conductivity

Self-templating thermolysis synthesis of Cu2-xS@ M （M = C, TiO2, MoS2） hollow spheres and their application in rechargeable lithium batteries

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Nano Research 2018年第2期11卷 831-844页

作者： Yunhui Wang He Li Yiyong Zhang Yueying Peng Peng Zhang jinbao zhao State Key Lab of Physical Chemistry of Solid Surfaces College of Chemistry and Chemical Engineering Xiamen University Xiamen China Collaborative Innovation Center of Chemistry for Energy Materials College of Chemistry and Chemical Engineering Xiamen University Xiamen China State-Province Joint Engineering Laboratory of Power Source Technology for New Energy Vehicle Xiamen University Xiamen China College of Energy Xiamen University Xiamen China

Owing to their unique structural stability and impressive long-term cycling performance, coated hollow structures are highly attractive for energy storage systems, especially batteries. Many efforts have been devoted and various strategies have been proposed to prepare such materials. In the present work, we propose a self-templating thermolysis strateg different from traditional wet processing methods, to fabricate cuprous sulfide hollow spheres coated with different shells, by exploiting the thermal decomposition properties of the core （CuS） and the protection provided by the shell. To demonstrate the generality of this synthetic approach, three different coating materials （carbon, TiO2, MoS2） have been chosen to prepare Cu2_S@C, Cu2_S@TiO2 and Cu2_xS@MoS2 hollow spheres. All synthesized composite materials were then assembled as electrodes and tested in lithium batteries, showing excellent cycling stability. In particular, the electro- chemical properties of Cu2_xS@C were thoroughly investigated. The results of this work provide an alternative route to prepare coated metal sulfide hollow soheres for enerL^v storage aoDlications.

关键词： self-templatingthermolysis sulfide hollow spheres lithium batteries

Promote the conductivity of solid polymer electrolyte at room temperature by constructing a dual range ionic conduction path

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Journal of Energy Chemistry 2022年第1期31卷 395-403,I0011页

作者： Ruiyang Li Haiming Hua Yuejing Zeng Jin Yang Zhiqiang Chen Peng Zhang jinbao zhao College of Chemistry and Chemical Engineering State-Province Joint Engineering Laboratory of Power Source Technology for New Energy VehicleState Key Laboratory of Physical Chemistry of Solid SurfacesEngineering Research Center of Electrochemical TechnologyMinistry of EducationCollaborative Innovation Center of Chemistry for Energy MaterialsXiamen UniversityXiamen 361005FujianChina College of Energy Xiamen UniversityXiamen 361102FujianChina

Poly(ethylene oxide)(PEO)is a classic matrix model for solid polymer electrolyte which can not only dissociate lithium-ions(Li^(+)),but also can conduct Li^(+) through segmental motion in ***,the crystal aggregation state of PEO restricts the conduction of Li^(+) especially at room *** this work,an amorphous polymer electrolyte with ethylene oxide(EO)and propylene oxide(PO)block structure(B-PEG@DMC)synthesized by the transesterification is firstly obtained,showing an ionic conductivity value of 1.1×10^(5) S/cm at room temperature(25℃).According to the molecular dynamics(MD)simulation,the PO segments would lead to an inconsecutive and hampered conduction of Li^(+),which is not beneficial to the short range conduction of Li^(+).Thus the effect of transformation of aggregation state on the improveme nt of ionic conductivity is not eno ugh,it is n ecessary to further consider the differe nt coupled behaviours of EO and PO segments with Li^(+).In this way,we blend this amorphous polymer(B-PEG@DMC)with PEO to obtain a dual range ionic conductive solid polymer electrolyte(D-SPE)with further improved ionic conductivity promoted by constructing a dual range fast ionic conduction,which eventually shows a further improved ionic conductivity value of 2.3×10^(5) S/cm at room temperature.

关键词： Solid polymer electrolyte Amorphous polymer Ionic conductivity Room temperature Arrhenius equation

Ag-modified hydrogen titanate nanowire arrays for stable lithium metal anode in a carbonate-based electrolyte

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Journal of Energy Chemistry 2021年第3期30卷 282-290页

作者： Zhipeng Wen Dongzheng Wu Hang Li Yingxin Lin Hang Li Yang Yang jinbao zhao State Key Lab of Physical Chemistry of Solid Surfaces Collaborative fnnovation Centre of Chemistry for Energy MaterialsState-Province JointEngineering Laboratory of Power Source Technology for New Energy VehicleEngineering Research Center of Electrochemical TechnologyMinistiy of EducationCollege of Chemistiy and Chemical EnginesringXiamen UniversityXiamen 361005FujianChina College of Energy&School of Energy Research Xiamen University Xiamen 361102FujianChina School of Chemical Engineering cmd Light Industry Guangdong University of TechnologyGuangzhou 510006CuangdongChina

In the investigation of the next-generation battery anode,Li metal has attracted increasing attention owing to its ultrahigh specific capacity and low reduction ***,its low columbic efficiency,limited cycling life,and serious safety hazards have hindered the practical application of rechargeable Li metal *** several strategies have been proposed to enhance the electrochemical performance of Li metal anodes,most are centered around ether-based electrolytes,which are volatile and do not provide a sufficiently large voltage ***,we aimed to attain stable Li deposition/stripping in a commercial carbonate-based ***,we have successfully synthesized hydrogen titanate(HTO)nanowire arrays decorated with homogenous Ag nanoparticles(NPs)(Ag@HTO)via simple hydrothermal and silver mirror *** 3 D cross-linked array structure with Ag NPs provides preferable nucleation sites for uniform Li deposition,and most importantly,when assembled with the commercial LiNi_(0.5)Co0.2Mn_(0.3)O_(2) cathode material,the Ag@HTO could maintain a capacity retention ratio of 81.2% at 1 C after 200 cycles,however the pristine Ti foil failed to do so after only 60 *** research therefore reveals a new way of designing current collectors paired with commercial high voltage cathodes that can create high energy density Li metal batteries.

关键词： Hydrogen titanate nanowire arrays Ag nanoparticles Li metal anode Carbonate-based electrolyte

In-situ construction of a thermodynamically stabilized interface on the surface of single crystalline Ni-rich cathode materials via a onestep molten-salt route

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Nano Research 2023年第5期16卷 6771-6779页

作者： Huiya Yang Xiangbang Kong Jiyang Li Pengpeng Dai Jing Zeng Yang Yang jinbao zhao State Key Laboratory of Physical Chemistry of Solid Surfaces Collaborative Innovation Centre of Chemistry for Energy MaterialsState-Province Joint Engineering Laboratory of Power Source Technology for New Energy VehicleEngineering Research Center of Electrochemical TechnologyMinistry of EducationCollege of Chemistry and Chemical EngineeringXiamen UniversityXiamen 361005China

Nickel rich LiNi_(x)Co_(y)Mn_(1−x−y)O_(2)cathode materials have been studied extensively to increase the energy density of lithium-ion batteries(LIBs)due to their advantages of high capacity and low ***,the anisotropic crystal expansion and contraction inside the secondary particles would cause detrimental micro-cracks and severe parasitic reactions at the electrode/electrolyte interface during cycling,which severely decreases the stability of crystalline structure and cathodeelectrolyte interphase and ultimately affects the calendar life of ***,a thermodynamically stabilized interface is constructed on the surface of single-crystalline Ni-rich cathode materials(SC811@RS)via a facile molten-salt route to suppress the generation of microcracks and interfacial parasitic side reactions *** functional theory calculations show that the formation energy of interface layer(−1.958 eV)is more negative than that of bulk layered structure(−1.421 eV).Such a thermodynamically stable protective layer can not only prevent the direct contact between highly reactive LiNi_(x)Co_(y)Mn_(1−x−y)O_(2)and electrolyte,but also mitigate deformation of structure caused by stress thus strengthening the mechanical *** spectra further confirm the excellent structural reversibility and reaction homogeneity of SC811@RS at particle,electrode,time ***,SC811@RS cathode material delivers significantly improved cycling stability(high capacity retention of 92%after 200 cycles at 0.5 C)compared with polycrystalline LiNi_(0.8)Co_(0.1)Mn_(0.1)O_(2)(82%).

关键词： LiNi_(x)Co_(y)Mn_(1−x−y)O_(2) single crystalline polycrystalline cathode lithium-ion battery

A homogenous solid polymer electrolyte prepared by facile spray drying method is used for room-temperature solid lithium metal batteries

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Nano Research 2023年第4期16卷 5080-5086页

作者： Zehao Zhou Tong Sun Jin Cui Xiu Shen Chuan Shi Shuang Cao jinbao zhao College of Physics Qingdao UniversityQingdao 266071China Collaborative Innovation Center of Chemistry for Energy Materials State Key Lab of Physical Chemistry of Solid SurfacesState-Province Joint Engineering Laboratory of Power Source Technology for New Energy VehicleEngineering Research Center of Electrochemical TechnologyMinistry of EducationCollege of Chemistry and Chemical EngineeringXiamen UniversityXiamen 361005China College of Chemistry and Chemical Engineering Qingdao UniversityQingdao 266071China

The aggregation of inorganic particles with high mass ratio will form a heterogeneous electric field in the solid polymer electrolytes(SPEs),which is difficult to be compatible with lithium anode,leading to inadequate ionic ***,a facile spray drying method is adopted to increase the mass ratio of inorganic particles and solve the aggregation problems of fillers *** polyvinylidene fluoride(PVDF)with lithium bis(trifluoromethanesulfonyl)imide(LiTFSI)covers the surface of each Li_(6.4)La_(3)Zr_(1.4)Ta_(0.6)O_(12)(LLZTO)granules during the nebulization process,then forming flat solid electrolytes via layer-by-layer *** by the atomic force microscope,the obtained solid electrolytes achieve a homogenous dispersion of Young’s modulus and surface electric *** a result,the as-prepared SPEs present high tensile strength of 7.1 MPa,high ionic conductivity of 1.86×10^(−4)S·cm^(−1)at room temperature,and wide electrochemical window up to 5.0 V,demonstrating increased mechanical strength and uniform lithium-ion migration channels for *** to the as-prepared SPEs,the lithiumsymmetrical cells show a highly stable Li plating/stripping cycling for over 1,000 h at 0.1 mA·cm^(−2).The corresponding Li/LCoO_(2)batteries also present good rate capability and excellent cyclic performance with capacity retention of 80%after 100 cycles at room temperature.

关键词： solid polymer electrolytes spray drying homogenous dispersion solid lithium batteries polyvinylidene fluoride/Li_(6.4)La_(3)Zr_(1.4)Ta_(0.6)O_(12)(PVDF/LLZTO) surface electric field

The Critical Role of Fillers in Composite Polymer Electrolytes for Lithium Battery

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Nano-Micro Letters 2023年第5期15卷 339-375页

作者： Xueying Yang Jiaxiang Liu Nanbiao Pei Zhiqiang Chen Ruiyang Li Lijun Fu Peng Zhang jinbao zhao College of Energy Xiamen UniversityXiamen 361102People’s Republic of China State Key Laboratory of Physical Chemistry of Solid Surfaces Collaborative Innovation Centre of Chemistry for Energy MaterialsState-Province Joint Engineering Laboratory of Power Source Technology for New Energy VehicleEngineering Research Center of Electrochemical TechnologyMinistry of EducationCollege of Chemistry and Chemical EngineeringXiamen UniversityXiamen 361005People’s Republic of China College of Energy Nanjing Technical UniversityNanjing 211816People’s Republic of China

With excellent energy densities and highly safe performance,solidstate lithium batteries(SSLBs)have been hailed as promising energy storage ***-state electrolyte is the core component of SSLBs and plays an essential role in the safety and electrochemical performance of the *** polymer electrolytes(CPEs)are considered as one of the most promising candidates among all solid-state electrolytes due to their excellent comprehensive *** this review,we briefly introduce the components of CPEs,such as the polymer matrix and the species of fillers,as well as the integration of fillers in the *** particular,we focus on the two major obstacles that affect the development of CPEs:the low ionic conductivity of the electrolyte and high interfacial *** provide insight into the factors influencing ionic conductivity,in terms of macroscopic and microscopic aspects,including the aggregated structure of the polymer,ion migration rate and carrier *** addition,we also discuss the electrode-electrolyte interface and summarize methods for improving this *** is expected that this review will provide feasible solutions for modifying CPEs through further understanding of the ion conduction mechanism in CPEs and for improving the compatibility of the electrode-electrolyte interface.

关键词： Composite polymer electrolytes Fillers Ionic conductivity Electrode-electrolyte interface

A stable artificial protective layer for high capacity dendrite-free lithium metal anode

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Nano Research 2019年第10期12卷 2535-2542页

作者： Zhipeng Wen Yueying Peng Jianlong Cong Haiming Hua Yingxin Lin Jian Xiong Jing Zeng jinbao zhao State Key Lab of Physical Chemistry of Solid Surfaces Collaborative Innovation Centre of Chemistry for Energy MaterialsState-Province Joint Engineering Laboratory of Power Source Technology for New Energy VehicleEngineering Research Center of Electrochemical TechnologyMinistry of EducationCollege of Chemistry and Chemical EngineeringXiamen UniversityXiamen 361005China College of Energy&School cf Energy Research Xiamen UniversityXiamen 361102China

The metallic lithium(Li)is considered as the most promising anode material for high-e nergy ***,the uncon trollable growth of Li den drite and un stable electrolyte/electrode in terface still hin der the developme nt of Li-based *** this work,a no vel strategy has been proposed to stabilize Li anode by in-situ polymerizing polypyrrole(PPy)layer on Ni foam(PPy@Ni foam)as an artificial protective *** PPy protective layer can effectively decrease the contact between Li metal and electrolyte during *** addition,the morphology characterization shows that the PPy layer can help the even Li deposition undemeath the layer,leading to a dendrite-free Li *** a result,when deposited 2 mAh-cm-2 Li metal,the PPy@Ni foam can keep stable Coulombic efficiency(99%)during nearly 250 cycles,much better than the pure Ni foam(100 cycles).Even in the case of the Li capacity of 10 mAh-cm-2,the stable cycling performance for 60 cycles can still be ***,when assembled with LiFePO4 material as the cathode for a full cell,the PPy@Ni foam can keep high capacity retention of 85.5%at 500 *** our work,we provide a simple and effective method to enhanee the electrochemical performances of Li metal-based batteries,and reveal a new avenue to design three-dimensional(3D)metallic curre nt collector for protecting the Li metal ano de.

关键词： high capacity polypyrrole layer Li metal artificial protective layer dendrite-free anode