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Surface‑Alloyed nanoporous Zinc as Reversible and Stable Anodes for High‑Performance Aqueous Zinc‑Ion Battery

Nano-Micro Letters 2022年第8期14卷 58-71页

作者： Huan Meng Qing Ran Tian-Yi Dai Hang Shi Shu-Pei Zeng Yong-Fu Zhu Zi Wen Wei Zhang Xing-You Lang Wei-Tao Zheng Qing Jiang Key Laboratory of Automobile Materials(Jilin University) Ministry of EducationSchool of Materials Science and Engineeringand Electron Microscopy CenterJilin UniversityChangchun 130022People’s Republic of China State Key Laboratory of Automotive Simulation and Control Jilin UniversityChangchun 130022People’s Republic of China

metallic zinc(Zn)is one of the most attractive multivalent-metal anode materials in post-lithium batteries because of its high abundance,low cost and high theoretical capacity.However,it usually suffers from large voltage polarization,low Coulombic efficiency and high propensity for dendritic failure during Zn stripping/plating,hindering the practical application in aqueous rechargeable zinc-metal batteries(AR-ZMBs).Here we demonstrate that anionic surfactant-assisted in situ surface alloying of Cu and Zn remarkably improves Zn reversibility of 3D nanoporous Zn electrodes for potential use as high-performance AR-ZMB anode materials.As a result of the zincophilic ZnxCuy alloy shell guiding uniform Zn deposition with a zero nucleation overpotential and facilitating Zn stripping via the ZnxCuy/Zn galvanic couples,the self-supported nanoporous ZnxCuy/Zn electrodes exhibit superior dendrite-free Zn stripping/plating behaviors in ambient aqueous electrolyte,with ultralow polarizations under current densities up to 50 mA cm^(‒2),exceptional stability for 1900 h and high Zn utilization.This enables AR-ZMB full cells constructed with nanoporous ZnxCuy/Zn anode and K_(z)MnO_(2)cathode to achieve specific energy of as high as~430 Wh kg^(‒1)with~99.8%Coulombic efficiency,and retain~86%after long-term cycles for>700 h.

关键词： nanoporous metal Zinc-based alloy anode Aqueous zinc-ion batteries Surface alloying

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Recent progress on three-dimensional nanoarchitecture anode materials for lithium/sodium storage

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Journal of Materials Science & Technology 2022年第24期119卷 167-181页

作者： Zhijia Zhang Yuefang Chen Shihao Sun Kai Sun Heyi Sun Hongwei Li Yuhe Yang Mengmeng Zhang Weijie Li Shulei Chou Huakun Liu Yong Jiang State Key Laboratory of Separation Membrane and Membrane Processes School of Materials Science and EngineeringTiangong UniversityTianjin 300387China Institute for Superconducting and Electronic Materials University of WollongongWollongongNSW 2522Australia Institute for Carbon Neutralization College of Chemistry and Materials EngineeringWenzhou UniversityWenzhou 325035China

High-performance batteries with high density and low cost are needed for the development of largescale energy storage fields such as electric vehicles and renewable energy systems.The anode with threedimensional(3D)nanoarchitecture is one of the most attractive candidates for high-performance lithiumion batteries(LIBs)and sodium-ion batteries(SIBs)due to its efficient electron/ion transport and high active material mass loading.Although some important breakthroughs have been made in 3D nanoarchitecture anode materials,more improvements are still needed for high cycling stability and high energy density.Herein,the latest research progress of 3D nanoarchitecture anode materials for LIBs and SIBs is reviewed,including nanoporous metal,nanoporous graphene,and their derived foams.Specifically,the storage properties of Li/Na ions,the kinetics of ion/electron transport,and specific chemical interactions are discussed based on the structure design.In addition,the research strategies and structural characteristics of 3D nanoarchitecture anode materials are summarized,providing a reference for the further development of LIBs and SIBs.Meanwhile,the future research directions of LIBs and SIBs have also prospected.

关键词： Lithium-ion batteries Sodium-ion batteries Anode material nanoporous metal nanoporous graphene metal foam Graphene foam Carbon foam

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Self-standing 3D nanoporous Ag_(2)Al with abundant surface oxygen species facilitating oxygen electroreduction for efficient hybrid Zn battery

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Journal of Energy Chemistry 2021年第7期30卷 345-354页

作者： Ming Peng Yang Zhao Jiao Lan Yijin Qiao Yongwen Tan College of Materials Science and Engineering Hunan UniversityChangsha 410082HunanChina

The hybrid battery integrating a typical Zn redox battery and a Zn-air battery is a promising green technology for energy storage,and the cathode integrating the redox reaction and electrocatalytic oxygen reduction is a key point for efficient electrochemical energy conversion.Herein,we report a scalable strategy to fabricate nanoporous Ag2 Al internetallic compound as a self-standing cathode for the hybrid Zn battery.The abundant surface oxygen species,the Ag-Al intermetallic interaction and the npAg_(2)Al@AgAlOx interface cooperatively contributed to the catalytic ORR activity.The electrode endows efficient catalytic oxygen reduction(a Tafel slope of 38.0 mV/dec and an onset potential of 0.998 V)and regulated redox activity as compared with Ag.The nanoporous channels allow efficient ion transport,interface charge exchange and gas molecular diffusion.Significantly,the assembled hybrid Zn-Ag_(2) Al/air battery delivers a high capacity of 3.23 mAh/cm^(2) as compared with recent reports.As far as we know,this is the first exploration for the electrochemical property of Ag2 Al,and it would inspire more exploration in developing multifunctional materials and robust hybrid batteries for practical applications.

关键词： nanoporous metal Ag_(2)Al Oxygen reduction Intermetallic interaction Hybrid battery

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