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Recent progress in electrolyte design for advanced lithium metal batteries

SmartMat 2023年第5期4卷 1-29页

作者： Mingnan Li Caoyu Wang Kenneth Davey Jingxi Li Guanjie Li Shilin Zhang Jianfeng Mao Zaiping Guo School of Chemical Engineering&Advanced Materials The University of AdelaideAdelaideAustralia

Lithium metal batteries(LMBs)have attracted considerable interest for use in electric vehicles and as next-generation energy storage devices because of their high energy ***,a significant practical drawback with LMBs is the instability of the Li metal/electrolyte interface,with concurrent parasitic reactions and dendrite growth,that leads to low Coulombic efficiency and poor cycle *** to the significant role of electrolytes in batteries,rationally designed electrolytes can improve the electrochemical performance of LMBs and possibly achieve fast charge and a wide range of working temperatures to meet various requirements of the market in the *** there are some review papers about electrolytes for LMBs,the focus has been on a single parameter or single performance separately and,therefore,not sufficient for the design of electrolytes for advanced LMBs for a wide range of working *** review presents a systematic summary of recent progress made in terms of electrolytes,covering the fundamental understanding of the mechanism,scientific challenges,and strategies to address drawbacks of electrolytes for high-performance *** advantages and disadvantages of various electrolyte strategies are also analyzed,yielding suggestions for optimum properties of electrolytes for advanced LMBs ***,the most promising research directions for electrolytes are discussed briefly.

关键词： anion-derived SEI fast charge liquid electrolyte design lithium metal batteries safe electrolytes wide working temperature

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The critical role of carbon in marrying silicon and graphite anodes for high-energy lithium-ion batteries

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Carbon Energy 2019年第1期1卷 57-76页

作者： Jingxing Wu Yinliang Cao Haimin Zhao Jianfeng Mao Zaiping Guo Institute for Superconducting and Electronic Materials Australian Institute for Innovative MaterialsUniversity of WollongongWollongongNew South WalesAustralia School of Mechanical MaterialsMechatronics and Biomedical EngineeringUniversity of WollongongWollongongNew South WalesAustralia Tianneng Battery Group Co Ltd ZhejiangChina

Increasing the energy density of conventional lithium-ion batteries(LIBs)is important for satisfying the demands of electric vehicles and advanced *** is considered as one of the most-promising anodes to replace the traditional graphite anode for the realization of high-energy LIBs due to its extremely high theoretical capacity,although its severe volume changes during lithiation/delithiation have led to a big challenge for practical *** contrast,the co-utilization of Si and graphite has been well recognized as one of the preferred strategies for commercialization in the near *** this review,we focus on different carbonaceous additives,such as carbon nanotubes,reduced graphene oxide,and pyrolyzed carbon derived from precursors such as pitch,sugars,heteroatom polymers,and so forth,which play an important role in constructing micrometersized hierarchical structures of silicon/graphite/carbon(Si/G/C)composites and tailoring the morphology and surface with good structural stability,good adhesion,high electrical conductivity,high tap density,and good interface chemistry to achieve high capacity and long cycling stability *** first discuss the importance and challenge of the co-utilization of Si and ***,we carefully review and compare the improved effects of various types of carbonaceous materials and their associated structures on the electrochemical performance of Si/G/C *** also review the diverse synthesis techniques and treatment methods,which are also significant factors for optimizing Si/G/C ***,we provide a pertinent evaluation of these forms of carbon according to their suitability for *** also make far-ranging suggestions with regard to the selection of proper carbonaceous materials and the design of Si/G/C composites for further development.

关键词： carbonaceous additives graphite high energy lithium-ion batteries silicon

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Metal chalcogenides for potassium storage

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InfoMat 2020年第3期2卷 437-465页

作者： Jingwen Zhou Ye Liu Shilin Zhang Tengfei Zhou Zaiping Guo Institute for Superconducting and Electronic Materials(ISEM) Australian Institute for Innovative Materials(AIIM)School of MechanicalMaterialsMechatronics and Biomedical EngineeringUniversity of WollongongWollongongAustralia Institute of Chemical Materials China Academy of Engineering PhysicsMianyangSichuanPeople's Republic of China

Potassium-based energy storage technologies,especially potassium ion batteries(PIBs),have received great interest over the past decade.A pivotal challenge facing high-performance PIBs is to identify advanced electrode materials that can store the large-radius K+ions,as well as to tailor the various thermodynamic *** chalcogenides are one of the most promising anode materials,having a high theoretical specific capacity,high in-plane electrical conductivity,and relatively small volume change on charge/***,the development of metal chalcogenides for PIBs is still in its infancy because of the limited choice of high-performance electrode ***,numerous efforts have been made to conquer this *** this article,we overview potassium storage mechanisms,the technical hurdles,and the optimization strategies for metal chalcogenides and highlight how the adjustment of the crystalline structure and choice of the electrolyte affect the electrochemical performance of metal-chalcogenide-based electrode *** potential potassium-based energy storage systems to which metal chalcogenides can be applied are also ***,future research directions focusing on metal chalcogenides for potassium storage are proposed.

关键词： energy storage metal chalcogenides modification strategies nanocomposites potassium ion batteries

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