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energy & Environmental Materials 2022年第2期5卷 565-571页

作者： Ying Liu Lingyang Liu Long Kang Fen Ran State Key Laboratory of Advanced Processing and Recycling of Non-ferrous Metals School of Material Science and EngineeringLanzhou University of TechnologyLanzhou 730050China Shandong Provincial Key Laboratory of Chemical energy storage and Novel Cell Technology School of Chemistry and Chemical EngineeringLiaocheng UniversityLiaocheng 252059China

As a promising anode material in supercapacitors,vanadium nitride has been widely concerned due to its ultra-high theoretical specific ***,its routine test capacitance value is still far from the theoretical value and its energy storage mechanism is *** order to solve these two key problems,here we prepare interplanar spacing expanded vanadium nitride materials with different impurity atoms intercalation from two anionic precursors of vanadium-based metal organic frameworks with different functional *** obtained vanadium nitride reaches a higher specific capacitance;and further,through ex situ X-Ray diffraction and in situ Raman,the charge storage of vanadium nitride is contributed by two processes:the first benefit is from the K^(+) de/intercalation in the interplanar spacing,and the other one is derived from the redox reaction with OH−by adsorption on ***,both of the first principle calculation and extended experiments support this *** believe that such detailed research on the energy storage mechanism can provide a clear idea for the application of metal nitrides in supercapacitors and other energy storage devices.

关键词： electrode materials energy storage mechanism supercapacitors vanadium nitride V-MOFs

Recent advances in energy storage mechanism of aqueous zinc-ion batteries

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Journal of energy Chemistry 2021年第3期30卷 712-726页

作者： Duo Chen Mengjie Lu Dong Cai Hang Yang Wei Han Sino-Russian International Joint Laboratory for Clean energy and energy Conversion Technology College of PhysicsJilin UniversityChangchun 130012JilinChina International Center of Future Science Jilin UniversityChangchun 130012JilinChina

Aqueous rechargeable zinc-ion batteries(ZIBs)have recently attracted increasing research interest due to their unparalleled safety,fantastic cost competitiveness and promising capacity advantages compared with the commercial lithium ion ***,the disputed energy storage mechanism has been a confusing issue restraining the development of *** a lot of efforts have been dedicated to the exploration in battery chemistry,a comprehensive review that focuses on summarizing the energy storage mechanisms of ZIBs is ***,the energy storage mechanisms of aqueous rechargeable ZIBs are systematically reviewed in detail and summarized as four types,which are traditional Zn^(2+)insertion chemistry,dual ions co-insertion,chemical conversion reaction and coordination reaction of Zn^(2+)with organic ***,the promising exploration directions and rational prospects are also proposed in this review.

关键词： Zinc-ion batteries energy storage mechanism Rechargeable aqueous battery Zn-MnO_(2)battery Electrolytic battery

Sulfur-containing polymer cathode materials: From energy storage mechanism to energy density

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InfoMat 2022年第8期4卷 1-24页

作者： Rong Zou Wenwu Liu Fen Ran State Key Laboratory of Advanced Processing and Recycling of Non-ferrous Metals School of Material Science and EngineeringLanzhou University of TechnologyLanzhouP.R.China

Besides lithium-ion batteries, it is imperative to develop new battery energystorage system with high energy density. In conjunction with the developmentof Li-S batteries, emerging sulfur-containing polymers with tunable sulfur-chain length and organic groups gradually attract much attention as cathodematerials. This can avoid the problems that are impeding the development ofthe typical Li-S batteries, such as volume expansion, active material dissolu-tion, shuttle effect, and so on. This review aims to generalize the type ofsulfur-containing polymers and the working principles in Li-S batteries. Thesulfur-containing polymers (R-Sn-R) with different sulfur-chain length (n > 6,n ≤ 2, and 3 ≤ n ≤ 6) are summarized. It also discusses several organic groupssuch as phenyl rings, N-heterocycles, and unique structure with cross-linkednetworks and multi-micropores skeleton. This review also explores other strat-egies of sulfur-containing polymers in the rest of Li-S batteries, providing asummary of the advantages of sulfur-containing polymers, recent develop-ment, in-depth discussion of the mechanism in Li-S batteries, and organicgroup-structure-performance relationship. This review would have guidelinesfor future development of sulfur-containing polymers in Li-S batteries.

关键词： cathode materials energy density energy storage mechanism Li-S batteries sulfur-containing polymer

A novel improvement strategy and a comprehensive mechanism insight for α-MnO_(2) energy storage in rechargeable aqueous zinc-ion batteries

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Carbon energy 2024年第9期6卷 93-108页

作者： Fan Xiankai Xiang Kaixiong Zhou Wei Deng Weina Zhu Hai Chen Liang Chen Han School of Materials and Environmental Engineering Changsha UniversityChangshaChina College of energy Materials and Chemistry Inner Mongonia UniversityHohhotInner MongoliaChina Liling Ceramic Institute Hunan University of TechnologyZhuzhouHunanChina

Aqueous zinc-ion batteries have been regarded as the most potential candidate to substitute lithium-ion ***,many serious challenges such as suppressing zinc dendrite growth and undesirable reactions,and achieving fully accepted mechanism also have not been ***,the commensal composite microspheres withα-MnO_(2) nano-wires and carbon nanotubes were achieved and could effectively suppress ZnSO_(4)·3Zn(OH)_(2)·nH_(2)O rampant *** electrode assembled with the microspheres delivered a high initial capacity at a current density of 0.05 A g^(-1) and maintained a significantly prominent capacity retention of 88%over 2500 ***,a novel energy-storage mechanism,in which multivalent manganese oxides play a synergistic effect,was comprehen-sively investigated by the quantitative and qualitative analysis for ZnSO_(4)·3Zn(OH)_(2)·nH_(2)*** capacity contribution of multivalent manganese oxides and the crystal structure dissection in the transformed processes were completely ***,our research could provide a novel strategy for designing improved electrode structure and a comprehensive understanding of the energy storage mechanism of α-MnO_(2) cathodes.

关键词： α-MnO_(2) aqueous zinc-ion batteries carbon nanotubes composite microspheres energy storage mechanism

Sodium vanadium oxides:From nanostructured design to high-performance energy storage materials

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Journal of Materials Science & Technology 2022年第26期121卷 80-92页

作者： Yifan Dong Shuolei Deng Ziting Ma Ge Yin Changgang Li Xunlong Yuan Huiyun Tan Jing Pan Liqiang Mai Fan Xia Engineering Research Center of Nano-Geomaterials of Ministry of Education Faculty of Material Science and ChemistryChina University of GeosciencesWuhan 430074China State Key Laboratory of Advanced Technology for Materials Synthesis and Processing International School of Materials Science and EngineeringWuhan University of TechnologyWuhan 430070China

Developing high-capacity and low-cost cathode materials for metal-ion rechargeable batteries is the mainstream trend and is also the key to providing breakthroughs in making high-energy rechargeable *** has a variety of valence states and can form a variety of vanadate *** a typical positive electrode material,vanadate has abundant ion adsorption sites,a unique“pillar”framework,and a typical layered ***,it has the advantages of high specific capacity and excellent rate performance,possessing the prospect of being a large-capacity energy storage *** this review,we focus on applications of sodium vanadium oxides(NVO)in electrical energy storage(EES)devices and summarize sodium vanadate materials from three aspects,including crystal structure,electrochemical performance,and energy storage *** recent progress of NVO-based highperformance energy storage materials along with nanostructured design strategies was provided and discussed as *** review is intended to serve as general guidance for researchers to develop desirable sodium vanadate materials.

关键词： Sodium vanadate Nanostructured materials Rechargeable metal-ion batteries energy storage mechanism

Revealing the role of calcium ion intercalation of hydrated vanadium oxides for aqueous zinc-ion batteries

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Journal of energy Chemistry 2024年第8期95卷 9-19,I0001页

作者： Tao Zhou Xuan Du Guo Gao Key Laboratory for Thin Film and Micro Fabrication of the Ministry of Education School of Sensing Science and EngineeringSchool of Electronic Information and Electrical EngineeringShanghai Jiao Tong UniversityShanghai 200240China

Exploring suitable high-capacity V_(2)O_(5)-based cathode materials is essential for the rapid advancement of aqueous zinc ion batteries(ZIBs).However,the typical problem of slow Zn^(2+)diffusion kinetics has severely limited the feasibility of such *** this work,unique hydrated vanadates(CaVO,BaVO)were obtained by intercalation of Ca^(2+)or Ba^(2+)into hydrated vanadium *** the CaVO//Zn and BaVO//Zn batteries systems,the former delivered up to a 489.8 mAh g^(-1)discharge specific capacity at 0.1 A g^(-1).Moreover,the remarkable energy density of 370.07 Wh kg^(-1)and favorable cycling stability yard outperform BaVO,pure V_(2)O_(5),and many reported cathodes of similar ionic intercalation *** addition,pseudocapacitance analysis,galvanostatic intermittent titration(GITT)tests,and Trasatti analysis revealed the high capacitance contribution and Zn^(2+)diffusion coefficient of CaVO,while an in-depth investigation based on EIS elucidated the reasons for the better electrochemical performance of ***,ex-situ XRD,XPS,and TEM tests further demonstrated the Zn^(2+)insertion/extraction and Zn-storage mechanism that occurred during the cycle in the CaVO//Zn battery *** work provides new insights into the intercalation of similar divalent cations in vanadium oxides and offers new solutions for designing cathodes for high-capacity aqueous ZIBs.

关键词： Aqueous zinc ion batteries Cathode materials Ion pre-intercalation Vanadium oxides energy storage mechanism

Redox Charge Transfer Kinetics and Reversibility of VO_(2) in Aqueous and Non-Aqueous Electrolytes of Na-Ion storage

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energy & Environmental Materials 2022年第4期5卷 1222-1228页

作者： Sul Ki Park Kang Ho Shin Puritut Nakhanivej Harpalsinh H.Rana Ho Seok Park School of Chemical Engineering College of EngineeringSungkyunkwan University2066Seobu-roJangan-guSuwon-si Gyeonggi-do 440-746Republic of Korea Department of Engineering University of CambridgeCambridge CB30FSUK Department of Health Sciences and Technology Samsung Advanced Institute for Health Sciences and Technology(SAIHST)Sungkyunkwan University2066SeoburoJangan-guSuwon 440-746South Korea SKKU Advanced Institute of Nano Technology(SAINT) Sungkyunkwan University2066SeoburoJangan-guSuwon 440-746South Korea

The deep understanding about the electrochemical behavior of the nanostructured electrode in electrolytes provides crucial insights for the rational design of electrode for sodium(Na)-ion storage system(NIS).Here,we report redox charge transfer kinetics and reversibility of VO_(2)(B) nanorod electrodes in both aqueous and organic electrolytes for *** assynthesized VO_(2)(B) nanorods show the reversible redox reaction with the higher specific and rate capacitances at high current density in aqueous electrolytes than in organic ***-dependent impedance measurements demonstrate the more facile interfacial charge transfer of Na ions into VO_(2)(B) nanorods in aqueous *** reversible evolution in oxidation state and chemical composition of VO_(2)(B) nanorods is observed in aqueous electrolytes,as confirmed by ex situ XRD and ex situ X-ray photoelectron spectroscopy *** by the facile and reversible pseudocapacitive feature,the electrochemical performances of VO_(2)(B) nanorods are further improved by constructing the hierarchical structure of the reduced graphene oxide-VO_(2) composite for aqueous Na+ion storage.

关键词： aqueous electrolyte energy storage mechanism hierarchical structure nanorod sodium ion storage

Achieving ultrahigh electrochemical performance by surface design and nanoconfined water manipulation

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National Science Review 2022年第6期9卷 143-152页

作者： Haisheng Li Kui Xu Pohua Chen Youyou Yuan Yi Qiu Ligang Wang Liu Zhu Xiaoge Wang Guohong Cai Liming Zheng Chun Dai Deng Zhou Nian Zhang Jixin Zhu Jinglin Xie Fuhui Liao Hailin Peng Yong Peng Jing Ju Zifeng Lin Junliang Sun College of Chemistry and Molecular Engineering Beijing National Laboratory for Molecular Sciences Peking University Key Laboratory of Flexible Electronics and Institute of Advanced Materials Jiangsu National Synergetic Innovation Center for Advanced MaterialsNanjing Tech University Core Labs King Abdullah University of Science and Technology Electron Microscopy Centre of Lanzhou University Lanzhou University School of Chemical and Environmental Engineering China University of Mining and Technology State Key Laboratory of Functional Materials for Informatics Shanghai Institute of Microsystem and Information TechnologyChinese Academy of Sciences Analytical Instrumentation Center Peking University School of Physical Science and Technology Electron Microscopy Centre of Lanzhou University and Key Laboratory of Magnetism and Magnetic Materials of the Ministry of Education Lanzhou University College of Materials Science and Engineering Sichuan University

The effects of nanoconfined water and the charge storage mechanism are crucial to achieving the ultrahigh electrochemical performance of two-dimensional transition metal carbides(MXenes). We propose a facile method to manipulate nanoconfined water through surface chemistry modification. By introducing oxygen and nitrogen surface groups, more active sites were created for Ti3C2MXene, and the interlayer spacing was significantly increased by accommodating three-layer nanoconfined water. Exceptionally high capacitance of 550 F g-1(2000 F cm-3) was obtained with outstanding high-rate performance. The atomic scale elucidation of the layer-dependent properties of nanoconfined water and pseudocapacitive charge storage was deeply probed through a combination of ‘computational and experimental microscopy’. We believe that an understanding of, and a manipulation strategy for, nanoconfined water will shed light on ways to improve the electrochemical performance of MXene and other two-dimensional materials.

关键词： two-dimensional material, MXene nanoconfined water energy storage mechanism supercapacitors

Polyoxovanadate ionic crystals with open tunnels stabilized by macrocations for lithium-ion storage

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Nano Research 2023年第7期16卷 9267-9272页

作者： Jie Wang Lin Wang Congyan Liu Yan Wang Fei Ye Wen Yan Bo Liu School of Chemistry and Materials Science University of Science and Technology of ChinaHefei 230026China

Polyoxometalates(POMs)with multiple redox active sites have been reported as charge sponge for lithium-ion batteries(LIBs).Herein,we for the first time introduce a polyoxovanadate(POV)ionic crystals with macrocations,[Ni(Phen)_(3)][ClV_(14)O_(34)]Cl(NiV_(14),Phen=1,10-phenanthroline),as an anode material for *** existence of macrocation[Ni(Phen)_(3)]^(2+)stabilizes the open tunnels inside NiV_(14).The NiV_(14)electrode exhibits superior rate capabilities(1083 mAh·g^(-1)at 100 mA·g^(-1)and 384 mAh·g^(-1)at 2000 mA·g^(-1))due to the rapid capacitive dominated contribution and high Li^(+)ions diffusion coefficients(3.3×10^(-12) cm^(-2)·s^(-1)),and it delivers a remarkable cycling stability with a Coulombic efficiency of 99.7%after 1000 cycles at 2000 mA·g^(-1).Such performance can be attributed to the stable structure of NiV14 and the highly reversible valence changes of vanadium during the charge/discharge processes,which are revealed by a combination of in situ X-ray diffraction(XRD),X-ray photoelectron spectroscopy(XPS),and X-ray absorption fine structure(XAFS)*** work not only demonstrates that NiV_(14) with open tunnels stabilized by macrocation is a promising anode material for high performance LIBs,but also provides important references for the rational design of POMs electrode materials in advanced energy storage systems.

关键词： polyoxometalates(POMs) ionic crystals lithium-ion battery(LIB) macrocation energy storage mechanism

A mixed-valence polyoxometalate-based 3D inorganic framework cathode material for high-efficiency rechargeable AZIBs

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Rare Metals 2024年第8期43卷 3677-3691页

作者： Qing Han Hao-Ran Xiao Tao Zhou Bing-Chuan Li Liu Yang Ling-Ling Xie Xue-Jing Qiu Xian-Yong Wu Li-Min Zhu Xiao-Yu Cao School of Chemistry and Chemical Engineering Henan University of TechnologyZhengzhou 450001China Key Laboratory of High Specific energy Materials for Electrochemical Power Sources of Zhengzhou City Zhengzhou 450001China College of Materials Engineering Henan University of EngineeringZhengzhou450007China School of Environmental Engineering Henan University of TechnologyZhengzhou 450001China Department of Chemistry University of Puerto Rico-Rio Piedras CampusSan JuanPR 00925USA

The global trend towards new energy storage systems has stimulated the development of electrochemical energy storage *** these technologies,rechargeable aqueous zinc-ion batteries(AZIBs)have attracted considerable interest as a potential alternative to lithium-ion batteries(LIBs)due to their affordable cost,environmental compatibility and high safety *** this study,a high-quality electrode for AZIBs has been successfully developed using a dehydrated mixed-valence polyoxometalate-based three-dimensional(3D)inorganic framework material known as[H_6Mn_(3)V^Ⅳ_(15)V-^Ⅴ_(4O)_(46)(H_2O)_(12)](3D-MnVO).This innovative 3D-MnVO material is built from the alternate connections of{V_(19)O_(46)}"sphere-shaped"clusters andμ_(2)-{Mn(H_(2)O)_(4)}bridges,where each{V_(19)O_(46)}cluster is surrounded by three pairs of vertically distributed{Mn(H_(2)O)_(4)}units,thus resulting in the 3D interpenetrating grid-like network from the infinite[-{V_(19)O_(46)}-μ_(2)-Mn(H_(2)O)_(4)-{V_(19)O_(46)}]_∞chains in three mutually perpendicular *** 3D framework structure of 3D-MnVO possesses abundant oxygen vacancies,spacious and multi-level interconnected channels for ion transport,which facilitates the efficient intercalation/deintercalation of hydrated Zn^(2+)into the pores of the primary structure via the intercalation capacitance *** a result,the 3D-MnVO electrode exhibits excellent diffusion rates and minimal interfacial *** a current density of 0.1 A·g^(-1),the 3D-MnVO cathode delivers a commendable discharge capacity of170.5 mAh·g^(-1)with 81.6%capacity retention after100 charge/discharge ***,even at a high current density of 1.0 A·g^(-1),the 3D-MnVO electrode delivers a remarkable reversible capacity of198.9 mAh·g^(-1).Our research results provide valuable insights into the development of advanced polyoxometalate-based 3D inorganic framework electrode materials for high-performance rechargeable AZIBs.

关键词： Cathode Polyoxometalate 3D inorganic framework Zinc-ion batteries energy storage mechanism