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Nano-Micro Letters 2022年第11期14卷 157-171页

作者： Hangjun Ying Pengfei Huang Zhao Zhang Shunlong Zhang Qizhen Han Zhihao Zhang Jianli Wang Wei-Qiang Han School of Materials Science and Engineering Zhejiang UniversityHangzhou 310027People’s Republic of China

Aqueous rechargeable zinc ion batteries are regarded as a competitive alternative to lithium-ion batteries because of their distinct advantages of high security,high energy density,low cost,and environmental friendliness.However,deep-seated problems including Zn dendrite and adverse side reactions severely impede the practical application.In this work,we proposed a freestanding Zn-electrolyte interfacial layer composed of multicapsular carbon fibers(MCFs)to regulate the plating/stripping behavior of Zn anodes.The versatile MCFs protective layer can uniformize the electric field and Zn^(2+)flux,meanwhile,reduce the deposition overpotentials,leading to high-quality and rapid Zn deposition kinetics.Furthermore,the bottom-up and uniform deposition of Zn on the Zn-MCFs interface endows long-term and high-capacity plating.Accordingly,the Zn@MCFs symmetric batteries can keep working up to 1500 h with 5 mAh cm^(−2).The feasibility of the MCFs interfacial layer is also convinced in Zn@MCFs||MnO_(2) batteries.Remarkably,the Zn@MCFs||α-MnO_(2)batteries deliver a high specific capacity of 236.1 mAh g^(−1)at 1 A g^(−1)with excellent stability,and maintain an exhilarating energy density of 154.3 Wh kg^(−1) at 33%depth of discharge in pouch batteries.

关键词： Aqueous zinc-ion battery Flexible interfacial layer dendrite inhibition Bottom-up deposition Moderate zincophilicity

Artificial solid electrolyte interface layer based on sodium titanate hollow microspheres assembled by nanotubes to stabilize zinc metal electrodes

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Journal of Energy Chemistry 2022年第8期31卷 539-546,I0015页

作者： Minfeng Chen Weijun Zhou Qinghua Tian Xiang Han Yanjun Tan Jizhang Chen Ching-Ping Wong Co-Innovation Center of Efficient Processing and Utilization of Forest Resources College of Materials Science and EngineeringNanjing Forestry UniversityNanjing 210037JiangsuChina Department of Chemistry School of SciencesZhejiang Sci-Tech UniversityHangzhou 310018ZhejiangChina Nanjing Sanle Group Co. Ltd.Nanjing 211800JiangsuChina School of Materials Science and Engineering Georgia Institute of TechnologyAtlantaGA 30332USA

Recently,aqueous zinc-ion batteries with intrinsic safety,low cost,and environmental benignity have attracted tremendous research interest.However,zinc dendrites,harmful side reactions,and zinc metal corrosion stand in the way.Herein,we use lepidocrocite-type sodium titanate hollow microspheres assembled by nanotubes to constitute an artificial solid electrolyte interface layer on the zinc metal electrode.Thanks to the hierarchical structure with abundant open voids,negative-charged layered framework,low hydrophilicity,electrically insulting nature,and large ionic conductivity,the sodium titanate coating layer can effectively homogenize the electric field,promote the Zn^(2+)ion transfer,guide the Zn^(2+)ion flux,reduce the desolvation barrier,improve the exchange current density,and accommodate the plated zinc metal.Consequently,this coating layer can effectively suppress zinc dendrites and other unfavorable effects.With this coating layer,the Zn//Zn symmetric cell is able to provide an impressive cumulative zinc plating capacity of 1375 m Ah cm^(-2) at a current density of 5 m A cm^(-2).This coating layer also contributes to significantly improved electrochemical performances of Zn//MnO_(2) battery and zincion hybrid capacitor.This work offers new insights into the modifications of zinc metal electrodes.

关键词： Artificial SEI layers Hierarchical sodium titanates Interfacial stability dendrite inhibition Aqueous Zn-ion batteries

Lithiophilic N-doped carbon bowls induced Li deposition in layered graphene film for advanced lithium metal batteries

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Nano Research 2022年第1期15卷 352-360页

作者： Xiaoyu Feng Hong-Hui Wu Biao Gao Michai Swietostawski Xin He Qiaobao Zhang Department of Materials Science and Engineering College of MaterialsXiamen UniversityXiamen 361005China The State Key Laboratory of Refractories and Metallurgy and Institute of Advanced Materials and Nanotechnology Wuhan University oj Science and TechnologyWuhan 430081y China School of Materials Science and Engineering University of Science and Technology BeijingBeijing 100083China Faculty of Chemistry Jagiellonian Universityul.Gronostajowa 230-387 KrakowPoland School of Chemical Engineering Sichuan UniversityChengdu 610065China

Lithium(Li)metal with high theoretical capacity and low electrochemical potential is the most ideal anode for next-generation high-energy batteries.However,the practical implementation of Li anode has been hindered by dendritic growth and volume expansion during cycling,which results in low Coulombic efficiency(CE),short lifespan,and safety hazards.Here,we report a highly stable and dendrite-free Li metal anode by utilizing N-doped hollow porous bowl-like hard carbon/reduced graphene nanosheets(CB@rGO)hybrids as three-dimensional(3D)conductive and lithiophilic scaffold host.The lithiophilic carbon bowl(CB)mainly works as excellent guides during the Li plating process,whereas the rGO layer with high conductivity and mechanical stability maintains the integrity of the composite by confining the volume change in long-range order during cycling.Moreover,the local current density can be reduced due to the 3D conductive framework.Therefore,CB@rGO presents a low lithium metal nucleation overpotential of 18 mV,high CE of 98%,and stable cycling without obvious voltage fluctuation for over 600 cycles at a current density of 1 mA cm^(-2).Our study not only provides a good CB@rGO host and pre-Lithiated CB@rGO composite anode electrode,but also brings a new strategy of designing 3D electrodes for those active materials suffering from severe volume expansion.

关键词： dendrite inhibition Li metal host lithium metal battery bowl-like carbon/reduced graphene nanosheets hybrids

Superstable potassium metal batteries with a controllable internal electric field

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Fundamental Research 2023年第5期3卷 813-821页

作者： Hongbo Ding Yanhong Feng Jiang Zhou Xinzhi Yu Ling Fan Bingan Lu School of Physics and Electronics State Key Laboratory of Advanced Design and Manufacturing for Vehicle BodyHunan UniversityChangsha 410082China School of Materials Science and Engineering and Key Laboratory of Nonferrous Metal Materials Science and Engineering Ministry of EducationCentral South UniversityChangsha 410083China

Stable potassium metal batteries(PMBs)are promising candidates for electrical energy storage due to their ability to reversibly store electrical energy at a low cost.However,dendritic growth and large volume changes hinder their practical application.Here,referring to the morphology and structure of a virus,a bionic virus-like-carbon microsphere(BVC)was designed as the anode host for a PMB.A BVC with a three-dimensional structure can not only control the electric field,which can suppress dendrite formation,but can also provide a larger space to accommodate the volume change during the cycle progress.The designed potassium(K)metal anode exhibits excellent cycle life and stability(during 1800 h of repeated plating/stripping of K at a current density of 0.1 mA cm−2,K-BVC can realize a very stable K metal anode with low voltage hysteresis).Stable cyclability and improved rate capability can be realized in a full cell using Prussian blue over 400 cycles.This research provides a new idea for the development of stable K metal anodes and may pave the way for the practical application of next-generation metal batteries.

关键词： Bionic structures K metal anodes Internal electric field dendrite inhibition 3D scaffolds

Na-K liquid alloy:A review on wettability enhancement and ionic carrier selection mechanism

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Chinese Chemical Letters 2021年第3期32卷 983-989页

作者： Xinran Li Jiahao Liu Cheng Chen Jian Yang Ziqiang Xu Mengqiang Wu Yuesheng Wang Zaghib Karim School of Materials and Energy University of Electronic Science and Technology of ChinaChengdu 611731China Center of Excellence in Transportation Electrification and Energy Storage Hydro-QuébecVarennesQC J3X1S1Canada

The intrinsic liquid interface of Na-K alloy allays concerns about dendrite growth on metal anodes that are thermodynamically within the room temperature(20-22℃).Nevertheless,it hinders the formation of a stable electrode structure due to the inferior wettability induced by considerable liquid tension.In addition,the dominant ionic carrier in the Na-K alloy is subject to multiple factors,which is not conducive to customized battery design.This review,based on recently reported frontier achievements on Na-K liquid anodes,summarizes practical strategies for promoting the wettability by hightemperature induction,capillary effect,vacuum infiltration,and solid interface protection.Furthermo re,four selection mechanisms of the dominant ionic carrier are presented:(1)ion property dominated,(2)cathode dominated,(3)separator dominated,and(4)solid electrolyte interface dominated.Notably,initial electrolytes in energy storage systems have been unable to play a decisive role in ionic selection.Utilizing a superior wettability strategy and simultaneously identifying the dominant ionic carrier can facilitate the tailored application of dendrite-free Na-K liquid anodes.

关键词： Liquid electrode Na-K alloy dendrite inhibition Wettability improvement Carrier selectivity

Advances and perspectives on separators of aqueous zinc ion batteries

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能源评论(英文) 2022年第1期1卷 34-42页

作者： Jizhang Chen Minfeng Chen Hong Ma Weijun Zhou Xinwu Xu College of Materials Science and Engineering Nanjing Forestry UniversityNanjing210037China Co-Innovation Center of Efficient Processing and Utilization of Forest Resources Nanjing Forestry UniversityNanjing210037China

With the advantages of intrinsic safety,good affordability,environmental friendliness,moderate energy density,and large power density,aqueous zinc ion batteries(AZIBs)have gained considerable research interest.However,zinc dendrites,hydrogen evolution,inert byproducts,and zinc metal corrosion severely hinder practical applications of AZIBs.In order to address these issues,many research works have been carried out to modify the interface between zinc metal anode and aqueous electrolyte.In fact,the interface engineering takes effect at the surface and near the surface of separator.However,a specialized review on the separators of AZIBs is still lacking.Herein,basic requirements of separators and recent advances on the modification strategies including employment of functional groups,establishment of surface coatings,construction of hybrid architectures,regulations of porosity,and utilization of bipolar membrane are reviewed.Besides,the perspectives for further investigations on the separators of AZIBs are outlined.This review could offer useful guidance for the future explorations of separators for AZIBs.

关键词： Aqueous Zn-ion batteries Separators Interfacial stability dendrite inhibition Zn deposition