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Review and prospects on the low-voltage Na_(2)Ti_(3)O_(7) anode materials for sodium-ion batteries

Journal of Energy Chemistry 2024年第1期88卷 446-460,I0011页

作者： Jun Dong yalong jiang Ruxing Wang Qiulong Wei Qinyou An Xiaoxing Zhang Hubei Key Laboratory for High-efficiency Utilization of Solar Energy and Operation Control of Energy Storage System Hubei University of TechnologyWuhan 430068HubeiChina State Key Laboratory of New Textile Materials and Advanced Processing Technologies Wuhan Textile UniversityWuhan 430200HubeiChina Xiamen Key Laboratory of High-Performance Metals and Materials College of MaterialsXiamen UniversityXiamen 361005FujianChina State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070HubeiChina

Due to its low cost and natural abundance of sodium,Na-ion batteries(NIBs)are promising candidates for large-scale energy storage systems.The development of ultralow voltage anode materials is of great significance in improving the energy density of NIBs.Low-voltage anode materials,however,are severely lacking in NIBs.Of all the reported insertion oxides anodes,the Na_(2)Ti_(3)O_(7) has the lowest operating voltage(an average potential of 0.3 V vs.Na^(+)/Na)and is less likely to deposit sodium,which has excellent potential for achieving NIBs with high energy densities and high safety.Although significant progress has been made,achieving Na_(2)Ti_(3)O_(7) electrodes with excellent performance remains a severe challenge.This paper systematically summarizes and discusses the physicochemical properties and synthesis methods of Na_(2)Ti_(3)O_(7).Then,the sodium storage mechanisms,key issues and challenges,and the optimization strategies for the electrochemical performance of Na_(2)Ti_(3)O_(7) are classified and further elaborated.Finally,remaining challenges and future research directions on the Na_(2)Ti_(3)O_(7) anode are highlighted.This review offers insights into the design of high-energy and high-safety NIBs.

关键词： Sodium-ion batteries Low-voltage anode materials Na_(2)Ti_(3)O_(7) Electrochemical performances Electrochemical mechanism

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Serrated lithium fluoride nanofibers-woven interlayer enables uniform lithium deposition for lithium-metal batteries

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National Science Review 2022年第11期9卷 194-207页

作者： Shuangshuang Tan yalong jiang Shuyan Ni Hao Wang Fangyu Xiong Lianmeng Cui Xuelei Pan Chen Tang Yaoguang Rong Qinyou An Liqiang Mai State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology College of Materials Science and Engineering Chongqing University Wuhan National Laboratory for Optoelectronics Huazhong University of Science and Technology Foshan Xianhu Laboratory of the Advanced Energy Science and Technology Guangdong Laboratory

The uncontrollable formation of Li dendrites has become the biggest obstacle to the practical application of Li-metal anodes in high-energy rechargeable Li batteries. Herein, a unique LiF interlayer woven by millimeter-level, single-crystal and serrated LiF nanofibers(NFs) was designed to enable dendrite-free and highly efficient Li-metal deposition. This high-conductivity Li F interlayer can increase the Li+transference number and induce the formation of ’Li F–NFs-rich’ solid–electrolyte interface(SEI). In the ’Li F–NFs-rich’SEI, the ultra-long Li F nanofibers provide a continuously interfacial Li+transport path. Moreover, the formed Li–LiF interface between Li-metal and SEI film renders low Li nucleation and high Li+migration energy barriers, leading to uniform Li plating and stripping processes. As a result, steady charge–discharge in a Li//Li symmetrical cell for 1600 h under 4 m Ah cm-2and 400 stable cycles under a high area capacity of 5.65 mAh cm-2in a high-loading Li//rGO–S cell at 17.9 mA cm-2could be achieved. The free-standing LiF –NFs interlayer exhibits superior advantages for commercial Li batteries and displays significant potential for expanding the applications in solid Li batteries.

关键词： lithium fluoride serrated nanofibers LiF interlayer uniform Li deposition lithium-metal batteries

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声共振混合器高黏度流体混合的功耗特性研究

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化工学报 2024年第2期75卷 531-542页

作者：詹小斌王会彬蒋亚龙史铁林华中科技大学机械科学与工程学院湖北武汉430074

声共振混合利用机械共振产生高加速度振动,从而促进流体流动,其功耗特性对于其设计及应用具有重要作用。为研究声共振混合器的功耗特性,基于CFD建立了声共振混合过程仿真模型,分析了高黏度流体声共振混合过程壁面对物料的作用力和做功功... 详细信息

声共振混合利用机械共振产生高加速度振动,从而促进流体流动,其功耗特性对于其设计及应用具有重要作用。为研究声共振混合器的功耗特性,基于CFD建立了声共振混合过程仿真模型,分析了高黏度流体声共振混合过程壁面对物料的作用力和做功功率,探究了黏度和振动参数改变对混合器功耗特性的影响,并建立了声共振混合器混合功率的预测函数。研究结果表明,在混合过程中,壁面对液相做功的瞬时功率呈现先减少后稳定波动的趋势,而有效功率呈现先增加后稳定波动的趋势,这种不同的变化趋势是由于两者的相位差发生变化所导致的。增加振幅、频率或等加速度下低频大振幅都能够增加瞬时功率和有效功率,并减少液相进入稳定流动阶段所需吸收的外界能量。

关键词：声共振混合器高黏度流体气液两相流混合功耗特性计算流体力学

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High-rate sodium-ion storage of vanadium nitride via surface-redox pseudocapacitance

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Interdisciplinary Materials 2023年第3期2卷 434-442页

作者： Qiulong Wei Tingyi Huang Xiaojuan Huang Binhao Wang yalong jiang Dafu Tang Dong-Liang Peng Bruce Dunn Liqiang Mai Department of Materials Science and Engineering Fujian Key Laboratory of Surface and Interface Engineering for High Performance MaterialsCollege of MaterialsXiamen UniversityXiamenChina State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhanChina Department of Materials Science and Engineering University of California Los AngelesLos AngelesCaliforniaUSA

Vanadium nitride(VN)electrode displays high-rate,pseudocapacitive responses in aqueous electrolytes,however,it remains largely unclear in nonaqueous,Na+-based electrolytes.The traditional view supposes a conversion-type mechanism for Na+storage in VN anodes but does not explain the phenomena of their size-dependent specific capacities and underlying causes of pseudocapacitive charge storage behaviors.Herein,we insightfully reveal the VN anode exhibits a surface-redox pseudocapacitive mechanism in nonaqueous,Na+-based electrolytes,as demonstrated by kinetics analysis,experimental observations,and first-principles calculations.Through ex situ X-ray photoelectron spectroscopy and semiquantitative analyses,the Na+storage is characterized by redox reactions occurring with the V5+/V4+to V3+at the surface of VN particles,which is different from the well-known conversion reaction mechanism.The pseudocapacitive performance is enhanced through nanoarchitecture design via oxidized vanadium states at the surface.The optimized VN-10 nm anode delivers a sodium-ion storage capability of 106 mAh g−1 at the high specific current of 20 A g−1,and excellent cycling performance of 5000 cycles with negligible capacity losses.This work demonstrates the emerging opportunities of utilizing pseudocapacitive charge storage for realizing high-rate sodium-ion storage applications.

关键词： high-rate capability pseudocapacitance sodium-ion storage vanadium nitride

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Low-strain TiP_(2)O_(7) withthree-dimensionalionchannelsas long-life and high-rate anode material for Mg-ion batteries

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Interdisciplinary Materials 2022年第1期1卷 140-147页

作者： Fangyu Xiong yalong jiang Li Cheng Ruohan Yu Shuangshuang Tan Chen Tang Chunli Zuo Qinyou An Yunlong Zhao Jean-Jacques Gaumet Liqiang Mai State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhanChina Foshan Xianhu Laboratory of the Advanced Energy Science and Technology Guangdong Laboratory FoshanChina Advanced Technology Institute University of SurreyGuildfordSurreyUK Laboratoire de Chimie et Physique:Approche Multi-echelles des Milieux Complexes Institut Jean BarriolUniversitede LorraineMetzFrance

Rechargeable magnesium batteries are identified as a promising next-generation energy storage system,but their development is hindered by the anode−electrolyte−cathode incompatibilities and passivation of magnesium metal anode.To avoid or alleviate these problems,the exploitation of alternative anode materials is a promising choice.Herein,we present titanium pyrophosphate(TiP_(2)O_(7))as anode materials for magnesium-ion batteries(MIBs)and investigate the effect of the crystal phase on its magnesium storage performance.Compared with the me-tastable layered TiP_(2)O_(7),the thermodynamically stable cubic TiP_(2)O_(7) displays a better rate capability of 72 mAh g^(−1) at 5000 mA g^(−1).Moreover,cubic TiP_(2)O_(7) exhibits excellent cycling stability with the capacity of 60 mAh g^(−1) after 5000 cycles at 1000 mA g^(−1),which are better than pre-viously reported Ti-based anode materials for MIBs.In situ X-ray diffraction technology confirms the single-phase magnesiumion inter-calation/deintercalation reaction mechanism of cubic TiP_(2)O_(7) with a low volume change of 3.2%.In addition,the density functional theory calcu-lation results demonstrate that three-dimensional magnesiumion diffu-sion can be allowed in cubic TiP_(2)O_(7) with a low migration energy barrier of 0.62 eV.Our work demonstrates the promise of TiP_(2)O_(7) as high-rate and long-life anode materials for MIBs and may pave the way for further development of MIBs.

关键词： anode material intercalation low-strain Mg-ion battery TiP_(2)O_(7)

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红枣发酵产品的研究进展

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食品科技 2024年第5期49卷 83-90页

作者：原洪姜敏路亚龙西安培华学院医学院陕西西安710199 陕西师范大学食品工程与营养科学学院陕西西安710119

红枣原产于中国,营养丰富、风味独特,具有较高的食用和药用价值。目前我国红枣加工产品仍以初加工产品为主,精深加工比例较低,制约了红枣加工产业的高质量可持续发展。随着生活水平的提高,消费者对于食品的追求越来越趋向于营养、健康... 详细信息

红枣原产于中国,营养丰富、风味独特,具有较高的食用和药用价值。目前我国红枣加工产品仍以初加工产品为主,精深加工比例较低,制约了红枣加工产业的高质量可持续发展。随着生活水平的提高,消费者对于食品的追求越来越趋向于营养、健康和天然。红枣由于其独特的风味和丰富的营养物质组成,已经被广泛应用于发酵食品的开发中。文章综述了近几年红枣发酵饮料、红枣醋、红枣酒和红枣酸乳等发酵制品生产工艺及产品特性的研究现状,期望能够为今后红枣系列深加工产品的研究与开发提供理论基础。

关键词：红枣发酵产品工艺品质

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High‑Energy and High‑Power Pseudocapacitor–Battery Hybrid Sodium‑Ion Capacitor with Na^(+) Intercalation Pseudocapacitance Anode

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Nano-Micro Letters 2021年第3期13卷 209-221页

作者： Qiulong Wei Qidong Li yalong jiang Yunlong Zhao Shuangshuang Tan Jun Dong Liqiang Mai Dong‑Liang Peng Department of Materials Science and Engineering Fujian Key Laboratory of Materials GenomeCollege of MaterialsXiamen UniversityXiamen 361005People’s Republic of China State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070People’s Republic of China Shenzhen Geim Graphene Center Tsinghua Shenzhen International Graduate SchoolTsinghua UniversityShenzhen 518055People’s Republic of China Advanced Technology Institute University of SurreyGuildford Surrey GU27XHUK

High-performance and low-cost sodium-ion capacitors(SICs)show tremendous potential applications in public transport and grid energy storage.However,conventional SICs are limited by the low specific capacity,poor rate capability,and low initial coulombic efficiency(ICE)of anode materials.Herein,we report layered iron vanadate(Fe5V15O39(OH)9·9H2O)ultrathin nanosheets with a thickness of~2.2 nm(FeVO UNSs)as a novel anode for rapid and reversible sodium-ion storage.According to in situ synchrotron X-ray diffractions and electrochemical analysis,the storage mechanism of FeVO UNSs anode is Na+intercalation pseudocapacitance under a safe potential window.The FeVO UNSs anode delivers high ICE(93.86%),high reversible capacity(292 mAh g^−1),excellent cycling stability,and remarkable rate capability.Furthermore,a pseudocapacitor–battery hybrid SIC(PBH-SIC)consisting of pseudocapacitor-type FeVO UNSs anode and battery-type Na3(VO)2(PO4)2F cathode is assembled with the elimination of presodiation treatments.The PBH-SIC involves faradaic reaction on both cathode and anode materials,delivering a high energy density of 126 Wh kg^−1 at 91 W kg^−1,a high power density of 7.6 kW kg^−1 with an energy density of 43 Wh kg−1,and 9000 stable cycles.The tunable vanadate materials with high-performance Na+intercalation pseudocapacitance provide a direction for developing next-generation highenergy capacitors.

关键词： Sodium-ion capacitors Pseudocapacitance Hybrid capacitors Two-dimensional materials Iron vanadate

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青藏铁路接触网异型桩基抗冻拔模型试验研究

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西南交通大学学报 2024年第3期59卷 677-684页

作者：周亚龙王旭蒋代军刘德仁何菲晏昌牛富俊兰州交通大学土木工程学院甘肃兰州730070 兰州交通大学甘肃省道路桥梁与地下工程重点实验室甘肃兰州730070 西北生态资源环境研究院甘肃兰州730000

保证接触网支柱桩基础的冻拔稳定性是青藏铁路格拉段电气化改造工程建设中的关键问题之一,为研究不同截面形式桩(等截面圆形桩Z1、直锥柱形桩Z2及曲锥柱形桩Z3)的抗冻拔性能,以青藏线路基填料为试验土体,进行3个冻融循环的室内模型试验... 详细信息

保证接触网支柱桩基础的冻拔稳定性是青藏铁路格拉段电气化改造工程建设中的关键问题之一,为研究不同截面形式桩(等截面圆形桩Z1、直锥柱形桩Z2及曲锥柱形桩Z3)的抗冻拔性能,以青藏线路基填料为试验土体,进行3个冻融循环的室内模型试验,得到冻融作用下接触网支柱桩基础的地温、桩顶位移及桩身应力的分布规律.试验结果表明:路基体的冻结(融化)是二维冻结(融化),接触网支柱桩基础附近的冻结深度约为30 cm;路肩处土体的竖向冻胀位移为4.30 mm,Z1的竖向冻拔量为0.26 mm,Z2与Z3的竖向冻拔量分别为Z1的46%、58%,3根桩的桩顶均产生约0.1 mm的水平位移;冻结过程中桩基整体受拉,冻深附近桩身轴力最大;切向冻胀应力的最大值出现在地表附近,曲锥柱形桩切向冻胀总力最小,抗冻拔效果最好.

关键词：多年冻土接触网支柱桩基础异型桩模型试验冻融作用冻拔特性

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Asymptotic expansions of complete Kahler-Einstein metrics with finite volume on quasi-projective manifolds

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Science China Mathematics 2022年第9期65卷 1953-1974页

作者： Xumin jiang yalong Shi Department of Mathematics Fordham UniversityNew YorkNY 10023USA Department of Mathematics Nanjing UniversityNanjing 210093China

We give an elementary proof to the asymptotic expansion formula of Rochon and Zhang(2012)for the unique complete Kahler-Einstein metric of Cheng and Yau(1980),Kobayashi(1984),Tian and Yau(1987)and Bando(1990)on quasi-projective manifolds.The main tools are the solution formula for second-order ordinary differential equations(ODEs)with constant coefficients and spectral theory for the Laplacian operator on a closed manifold.

关键词： asymptotic expansions Kahler-Einstein metric quasi-projective manifolds complex Monge-Ampère equations second-order ODE Schauder estimates spectral theory

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基于含冰量的冻结砂土-混凝土接触面蠕变特性

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西南交通大学学报 2024年第2期59卷 361-368页

作者：何菲王旭蒋代军周亚龙李君善陈航杰陈明伟兰州交通大学土木工程学院甘肃兰州730070 兰州交通大学道桥工程灾害防治技术国家地方联合工程实验室甘肃兰州730070 国网青海省电力公司检修公司青海西宁810021

保证高含冰量冻土区桩基础的长期稳定性是多年冻土区桥梁桩基础安全服役中的关键问题,为研究含冰量对冻土-混凝土接触面蠕变特性的影响,采用自行研制的大型蠕变剪切仪,在−2℃条件下开展含冰量为6%、12%、16%、23%、36%、60%、80%的冻结... 详细信息

保证高含冰量冻土区桩基础的长期稳定性是多年冻土区桥梁桩基础安全服役中的关键问题,为研究含冰量对冻土-混凝土接触面蠕变特性的影响,采用自行研制的大型蠕变剪切仪,在−2℃条件下开展含冰量为6%、12%、16%、23%、36%、60%、80%的冻结砂土与混凝土接触面蠕变试验.试验结果表明:在恒定的剪应力作用下,除含冰量为6%试样出现加速蠕变外,其他试样仅出现衰减蠕变及稳定蠕变2个阶段;随含冰量的增大,试样黏性变形占比增大,含冰量为80%试样的黏性变形超过总变形量的80%;稳定蠕变速率受到干密度及含冰量的综合影响,含冰量为16%时稳定蠕变速率最小;Burgers黏弹性模型能较好地模拟高含冰量冻结砂土-混凝土接触面蠕变曲线;随着含冰量的增大,初始剪切模量和稳定蠕变阶段黏滞系数先增大后减小,初始蠕变阶段的渐进剪切模量呈幂函数减小,初始蠕变阶段黏滞系数呈幂函数增大.

关键词：高含冰量冻土冻结砂土接触面蠕变试验黏弹性模型

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