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A Janus separator towards dendrite-free and stable zinc anodes for long-duration aqueous zinc ion batteries

Journal of Energy Chemistry 2023年第6期81卷 583-592,I0013页

作者： Yan Sun Qinping Jian Tianshuai Wang Bin Liu Yuhan Wan Jing Sun tianshou zhao Department of Mechanical and Aerospace Engineering The Hong Kong University of Science and TechnologyClear Water BayKowloonHong Kong 999077China Department of Mechanical and Energy Engineering Southern University of Science and TechnologyShenzhen 518055GuangdongChina School of Chemistry and Chemical Engineering Northwestern Polytechnical UniversityXi’an 710129ShaanxiChina

Critical issues of Zn anodes including undesirable dendrites formation and parasitic reactions severely limit the reversibility and cyclability of Zn *** address these issues,a functional Janus separator with the structure of a mechanically strong sulfonated poly(arylene ether sulfone)(SPAES)dense layer composited on a porous glass fiber(GF)substrate is *** SPAES dense layer that faces the Zn anode containing abundant sulfonic acid groups effectively promotes the desolvation process of hydrated Zn ions,guides uniform Zn ion transfer,and blocks anions and water,contributing to dendrite-free and highly reversible Zn plating/stripping cycles,while the porous GF substrate retains high electrolyte *** a result,the Zn symmetric cell with the Janus separator demonstrates an ultralong cycling lifespan of over 2000 h at the areal capacity of 1 m A h cm^(-2),which is 23-fold superior to that with a pristine glass fiber separator(<90 h).More impressively,the as-prepared Janus separator enables outstanding rate performance and excellent cycling stability of full Zn ion batteries with diverse cathode *** instance,when paired with the V_2O_(5)cathode,the full battery with a Janus separator attains an ultrahigh initial specific capacity of 416.3 m A h g^(-1)and capacity retention of 60%over 450 cycles at 1 A g^(-1),exceeding that with a glass fiber ***,this work provides a facile yet effective approach to mitigating the dendrites formation and ameliorating the parasitic reactions of Zn metal anodes for high-performance Zn ion batteries.

关键词： Janus separator Sulfonated poly(arylene ether sulfone) Dendrite-free Side reaction suppression Aqueous zinc-ion batteries

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Realizing high-voltage aqueous zinc-ion batteries with expanded electrolyte electrochemical stability window

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Chinese Chemical Letters 2023年第2期34卷 129-140页

作者： Buke Wu Yongbiao Mu Zheng Li Ming Li Lin Zeng tianshou zhao Shenzhen Key Laboratory of Advanced Energy Storage Southern University of Science and TechnologyShenzhen 518055China Department of Mechanical and Energy Engineering Southern University of Science and TechnologyShenzhen 518055China SUSTech Energy Institute for Carbon Neutrality Southern University of Science and TechnologyShenzhen 518055China State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070China

Aqueous zinc-ion batteries(AZIBs) have aroused significant research interest around the world in the past decade. The use of low-cost aqueous electrolytes and a metallic Zn anode with a suitable redox potential and high energy density make AZIBs a potential alternative to commercial Li-ion batteries in the development of next-generation batteries. However, owing to the narrow electrochemical stability window(ESW) of aqueous electrolytes, the choice of cathode materials is limited, because of which AZIBs exhibit a relatively low operating voltage and energy density. Hence, expanding the ESW of aqueous electrolytes is important for the development of practical AZIBs. This paper systematically reviews the electrolyte engineering strategies being explored to broaden the ESW of AZIBs. An in-depth analysis of high-voltage AZIBs is also presented. We suggest that the realization of high-voltage AZIBs depends on the synergistic development of suitable electrolytes and cathode materials. In addition, the cost associated with their fabrication as well as the use of standardized electrochemical tests should be considered during the design of high-voltage AZIBs.

关键词： High voltage Aqueous zinc ion batteries Electrolytes Cathodes Electrochemical stability window

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3D printing critical materials for rechargeable batteries: from materials, design and optimization strategies to applications

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International Journal of Extreme Manufacturing 2023年第4期5卷 215-245页

作者： Yongbiao Mu Youqi Chu Lyuming Pan Buke Wu Lingfeng Zou Jiafeng He Meisheng Han tianshou zhao Lin Zeng Shenzhen Key Laboratory of Advanced Energy Storage Southern University of Science and TechnologyShenzhen 518055People’s Republic of China SUSTech Energy Institute for Carbon Neutrality Southern University of Science and TechnologyShenzhen 518055People’s Republic of China Department of Mechanical and Energy Engineering Southern University of Science and TechnologyShenzhen 518055People’s Republic of China

Three-dimensional(3D)printing,an additive manufacturing technique,is widely employed for the fabrication of various electrochemical energy storage devices(EESDs),such as batteries and supercapacitors,ranging from nanoscale to *** technique offers excellent manufacturing flexibility,geometric designability,cost-effectiveness,and *** studies have focused on the utilization of 3D-printed critical materials for EESDs,which have demonstrated remarkable electrochemical performances,including high energy densities and rate capabilities,attributed to improved ion/electron transport abilities and fast ***,there is a lack of comprehensive reviews summarizing and discussing the recent advancements in the structural design and application of 3D-printed critical materials for EESDs,particularly rechargeable *** this review,we primarily concentrate on the current progress in 3D printing(3DP)critical materials for emerging *** commence by outlining the key characteristics of major 3DP methods employed for fabricating EESDs,encompassing design principles,materials selection,and optimization ***,we summarize the recent advancements in 3D-printed critical materials(anode,cathode,electrolyte,separator,and current collector)for secondary batteries,including conventional Li-ion(LIBs),Na-ion(SIBs),K-ion(KIBs)batteries,as well as Li/Na/K/Zn metal batteries,Zn-air batteries,and Ni–Fe *** these sections,we discuss the 3DP precursor,design principles of 3D structures,and working mechanisms of the ***,we address the major challenges and potential applications in the development of 3D-printed critical materials for rechargeable batteries.

关键词： additive manufacturing 3D printing rechargeable batteries electrochemical energy storage devices lithium-ion battery

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设计具有低氧化还原电位的联吡啶羧酸金属钴配合物用于循环稳定的高压水系有机液流电池

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Science Bulletin 2024年第11期69卷 1632-1636页

作者：刘斌魏巍汪煜宋满荣陈有科陈泓霖陈留平戴秋霞姚圣鑫徐俊辉贾国成赵天寿 Department of Mechanical and Aerospace Engineering The Hong Kong University of Science and TechnologyHong Kong 999077China Department of Chemistry The Hong Kong University of Science and TechnologyHong Kong 999077China Department of Mechanical and Energy Engineering Southern University of Science and TechnologyShenzhen 518055China Jiangsu Engineering Research Center for Comprehensive Utilization of Well and Rocks Salt Chinasalt Jintan Co.Ltd.Changzhou 213200China China Salt Cavern Comprehensive Utilization Co. Ltd.Changzhou 213200China Joint Research Center on Energy Storage Technology in Salt Caverns Shenzhen 518055China

Advanced energy storage technologies are widely needed to efficiently utilize renewable energies such as solar and wind energy and satisfy burgeoning clean energy needs while mitigating the environmental impact of fossil fuels[1–4].Aqueous organic redox flow batteries(AORFBs)have drawn substantial attention in this area because of their decoupled energy and power,excellent scalability,and use of highly structurally tunable organic redox active species[5].

关键词：液流电池氧化还原电位循环稳定

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Holey aligned electrodes through in-situ ZIF-8-assisted-etching for high-performance aqueous redox flow batteries

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Science Bulletin 2021年第9期66卷 904-913,M0004页

作者： Jing Sun Haoran Jiang Chen zhao Xinzhuang Fan Christopher Chao tianshou zhao Department of Mechanical and Aerospace Engineering The Hong Kong University of Science and TechnologyHong KongChina Department of Mechanical Engineering The University of Hong KongHong KongChina Building Energy Research Center Guangzhou HKUST Fok Ying Tung Research InstituteGuangzhou 511458China Institute for Advanced Study The Hong Kong University of Science and TechnologyHong KongChina

Fabricating electrodes with large specific surface area(SSA)and high permeability has been the longstanding target in redox flow batteries(RFBs).In this work,we propose a novel ZIF-8-assisted etching approach to form holey fibers in the electrospinning process of aligned electrode *** etching approach allows the formation of holey fibers with small pores of~50 nm,offering large active surface areas for redox reactions,while the aligned macrostructure with the holey fibers of 3–5 lm in diameter ensures a high permeability along the fiber *** application of the prepared electrodes to a vanadium redox flow battery(VRFB)enables an energy efficiency(EE)of 87.2%at the current density of 200 m A cm^(-2),which is 13.3%higher than that with conventional electrospun carbon *** at high current densities of 300 and 400 m A cm^(-2),the battery still maintains energy efficiencies of 83.3%and 79.3%.More excitingly,the prepared electrode yields a high limiting current density of4500 m A cm^(-2) and a peak power density of 1.6 W cm^(-2).It is anticipated that the present electrospinning method combining the ZIF-8-assisted etching approach with a way to form ordered fiber structures will allow even more high-performance electrodes for RFBs in the future.

关键词： Redox flow battery High-performance electrodes Holey fiber ZIF-8 Aligned structure Electrospinning

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Electrochemical and transport properties of V(Ⅱ)/V(Ⅲ)redox couple in a non-aqueous reline deep eutectic solvent

Electrochemical and transport properties of V(Ⅱ)/V(Ⅲ)redox...

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第一届全国储能科学与技术大会

作者： XU Qian YANG Chunzhen LI Huamin zhao tianshou Department of Mechanical and Aerospace Engineering The Hong Kong University of Science and Technology Clear Water Bay KowloonHong Kong SAR Institute for Energy Research Jiangsu University

The deep eutectic solvent(DES) can be used as a non-aqueous electrolyte that has unique advantages such as wide electrochemical window,low vapor pressure and easy *** electrochemical characteristics of a redox couple and the transport properties of corresponding ions in the DES determine the availability of this redox couple in non-aqueous flow *** this work,the electrochemical characteristics of V(II)/V(III) redox couple and the transport properties of vanadium ions in the Reline DES are *** cyclic voltammetry(CV) curves on a glassy carbon electrode show that at room temperature the redox reaction is quasi-reversible with the charge transfer coefficient of *** transport properties of vanadium ions,including the diffusivity,viscosity,conductivity in the Reline DES at different temperatures,are also *** results indicate that the transport properties are comparable to that in the conventional ionic *** high solubility of vanadium ions in the Reline DES can be attributed to the formation of hydrogen bond donor,which is confirmed by the FT-IR absorption spectra *** study reveals that the V(II)/V(III) redox couple is promising to be applied in a eco-friendly,low cost flow battery with Reline DES as electrolyte.

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V2O5-NiO composite nanowires:a novel and highly efficient carbon-free electrode for non-aqueous Li-air batteries operated in ambient air

V2O5-NiO composite nanowires:a novel and highly efficient ca...

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中国化学会第三届中国能源材料化学研讨会

作者： Ruihan Zhang Haoran Jiang Maochun Wu Lin Zeng tianshou zhao HKUST Energy Institute Department of Mechanical and Aerospace Engineering The Hong Kong University of Science and Technology

Due to the ultra-high theoretical specific capacity and energy density,the non-aqueous Li-air battery has attracted a lot of attention over the past ***,the decomposition of electrode during discharge and charge processes has seriously limited the further development of this ***,we fabricate a novel carbonand binder-free electrode,VO-NiO composite nanowires,via a hydrothermal method associated with a sintering *** this novel electrode,the battery displays an over-potential of as low as 0.56 V and is operated stably for 250 cycles(1000 h) with an energy efficiency of as high as 70% at the current of 250 mA g with a fixed capacity of 500 mAh g in pure *** the current density further increases from 250 to 500 and 750 mA g,the electrode enables the battery to operate stably for 220 and 200 cycles,indicating the excellent cycling stability and rate capability of the VO-NiO composite nanowire in pure ***,in ambient air,the battery with this electrode can still be steadily cycled for as high as 200 times(800 h) at the current density of 250 mA g with a coulombic efficiency of 100% and an energy efficiency of as high as ～68%.Therefore,the VO-NiO composite nanowire offers great promise to replace the carbon electrode and further realize the operation of the truly nonaqueous Li-air battery in ambient air.

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微细管内电渗流动的瞬态热效应

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化工学报 2006年第2期57卷 269-273页

作者：杜小泽赵天寿杨立军华北电力大学动力工程系暨电站设备状态监测与控制教育部重点实验室北京102206 香港科技大学机械工程系

建立微细圆管内电渗流动的非稳态数学模型,模型通过温度将电渗流的Poisson-Boltzmann方程、动量守恒和能量守恒方程耦合起来.详细讨论了在电渗流的初始阶段,焦耳效应对温度场和速度场演化的影响.同时讨论了不同冷却条件和外部电势场强... 详细信息

建立微细圆管内电渗流动的非稳态数学模型,模型通过温度将电渗流的Poisson-Boltzmann方程、动量守恒和能量守恒方程耦合起来.详细讨论了在电渗流的初始阶段,焦耳效应对温度场和速度场演化的影响.同时讨论了不同冷却条件和外部电势场强度条件下,电渗流速度场及温度场变化的特点以及自热的发生过程.研究发现,由于速度场的发展主要受温度主控的电解液黏度影响,因此速度场和温度场是同步发展起来的.通过所得到的结果可以为微细管内的电渗流确定合适的冷却条件,以便同时达到有效抑制样品温度和获得较高流动速度的目的.

关键词：热效应瞬态行为电渗

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隔热涡流室柴油机燃烧过程的研究

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内燃机学报 1988年第2期6卷 129-136页

作者：武善谋傅茂林赵天寿天津大学

本文采用等离子喷涂技术将陶瓷材料——部分稳定氧化锆(PSZ)喷涂在内燃机涡流室壁面上进行隔热,这是一种行之有效的隔热方法。试验结果表明,针对隔热后的涡流室,调整燃烧系统参数,使之适应隔热后高温状态下的燃烧,能够改善涡流室式柴油... 详细信息

本文采用等离子喷涂技术将陶瓷材料——部分稳定氧化锆(PSZ)喷涂在内燃机涡流室壁面上进行隔热,这是一种行之有效的隔热方法。试验结果表明,针对隔热后的涡流室,调整燃烧系统参数,使之适应隔热后高温状态下的燃烧,能够改善涡流室式柴油机的燃烧过程和性能。

关键词：涡流室柴油机供油提前角燃油比油耗部分负荷发动机原机低速柴油机燃气轮机性能参数燃烧过程隔热涂层壁面

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流体电池的化学工程科学问题

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中国科学基金 2023年第2期37卷 170-177页

作者：赵天寿蒋浩然李文甲南方科技大学机械与能源工程系深圳518055 天津大学机械工程学院天津300350

流体电池以可流动物质作为能量载体,具有能量与功率解耦、设计灵活、可扩展性好、不受地形地质限制等优点,是推动长时间能量存储、支撑可再生能源大规模并网、构建新型电力系统、实现双碳目标的关键技术。本文基于国家自然科学基金委员... 详细信息

流体电池以可流动物质作为能量载体,具有能量与功率解耦、设计灵活、可扩展性好、不受地形地质限制等优点,是推动长时间能量存储、支撑可再生能源大规模并网、构建新型电力系统、实现双碳目标的关键技术。本文基于国家自然科学基金委员会举办的第311期双清论坛,阐述了储能技术的战略意义,总结了流体电池的分类与现状,探讨了流体电池中热流科学和化学工程的学科交叉问题,提出了同时提升流体电池传输性能和电化学性能的有效途径,并为促进流体电池的发展提供了政策建议。

关键词：流体电池储能传热传质电化学结构设计学科交叉

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