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Strategies for improving the lithium-storage performance of 2D nanomaterials

National Science Review 2018年第3期5卷 389-416页

作者： Jun Mei Yuanwen Zhang Ting Liao Ziqi Sun Shi Xue Dou School of Chemistry Physics and Mechanical Engineering Queensland University of Technology Institute of Superconducting and Electronic Materials University of Wollongong

2D nanomaterials, including graphene, transition metal oxide(TMO) nanosheets, transition metal dichalcogenide(TMD) nanosheets, etc., have offered an appealing and unprecedented opportunity for the development of high-performance electrode materials for lithium-ion batteries(LIBs). Although significant progress has been made on 2D nanomaterials for LIB applications in the recent years, some major challenges still exist for the direct use of these sheet-like nanomaterials, such as their serious self-agglomerating tendency during electrode fabrication and low conductivity as well as the large volume changes over repeated charging–discharging cycles for most TMOs/TMDs, which have resulted in large irreversible capacity, low initial Coulombic efficiency and fast capacity fading. To address these issues,considerable progress has been made in the exploitation of 2D nanosheets for enhanced lithium storage. In this review, we intend to summarize the recent progress on the strategies for enhancing the lithium-storage performance of 2D nanomaterials, including hybridization with conductive materials, surface/edge functionalization and structural optimization. These strategies for manipulating the structures and properties of 2D nanomaterials are expected to meet the grand challenges for advanced nanomaterials in clean energy applications and thus provide access to exciting materials for achieving high-performance next-generation energy-storage devices.

关键词： 2D nanomaterials lithium-ion batteries graphene energy-storage devices

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Ordered Macroporous MoS_(2)-Carbon Composite with Fast and Robust Sodium storage Properties to Solve the Issue of Kinetics Mismatch of Sodium-Ion Capacitors

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energy & Environmental Materials 2023年第2期6卷 202-211页

作者： Weiqing Yu Chunyan Zhu Rutao Wang Jianchao Chen Qingyuan Liu Shuxian Zhang Shoubao Zhang Jinfeng Sun Longwei Yin Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials Ministry of EducationSchool of Materials Science and EngineeringShandong UniversityJi’nan 250061China Suzhou Institute of Shandong University Suzhou 215123China CAS Key Laboratory of Carbon MaterialsInstitute of Coal ChemistryChinese Academy of SciencesTaiyuan 030001China School of Physics and Physical Engineering Qufu Normal UniversityQufu 273165China School of Material Science&Engineering University of JinanJinan 250024China

Metal-ion capacitors(including Li^(+),Na^(+),and K^(+))effectively combine a battery negative electrode capable of reversibly intercalating metal cations,together with an electrical double-layer positive ***,such novel cell design has a birth defect,namely kinetics mismatch between sluggish negative electrode and fast positive electrode,thus limiting the energy-power ***,we design a MoS_(2)-carbon composite anode with the ordered macroporous architecture and interlayer-expanded feature,exhibiting the fast and reversible Na^(+)redox *** kinetically favored anode is coupled with a homemade activated carbon cathode that allows for the excellent electrochemical performance of sodiumion capacitor with respect to large specific capacity,high-rate capability,and robust *** quantification of the potential swings of anode and cathode via a three-electrode Swagelok cell,we for the first time observe the abnormal variation law of potential swings and thus directly providing the evidence that the kinetics gap has been filled up by this kinetically favored *** results represent a crucial step toward understanding the key issues of kinetics mismatch for hybrid cell,thus propelling the development of design of kinetically favored anode materials for high-performance metalion capacitors.

关键词： anode energy-storage devices kinetics Molybdenum disulfide sodium-ion capacitor

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Room-temperature reduction of NO2 in a Li-NO2 battery: a proof of concept

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Science Bulletin 2020年第1期65卷 55-61,M0004页

作者： Jiachen Liang Chen Zhang Donghai Liu Tianhao Wu Ying Tao Guo-Wei Ling Hai-Jun Yu Jun Lu Quan-Hong Yang Nanoyang Group State Key Laboratory of Chemical EngineeringSchool of Chemical Engineering and TechnologyCollaborative Innovation Center of Chemical Science and Engineering(Tianjin)Tianjin UniversityTianjin 300350China School of Marine Science and Technology Tianjin UniversityTianjin 300350China College of Materials Science and Engineering Key Laboratory of Advanced Functional MaterialsMinistry of EducationBeijing University of TechnologyBeijing 100124China Chemical Sciences and Engineering Division Argonne National LaboratoryArgonneIL 60439USA Joint School of National University of Singapore and Tianjin University International Campus of Tianjin UniversityFuzhou 350207China

Although considerable effort has been devoted to purifying nitrogen oxides(NOx),it is still challenging to effectively reduce NOxat room temperature and ambient pressure without *** this study,as a proof-of-concept,we have for the first time demonstrated the room-temperature reduction of nitrogen dioxide(NO2)using a rechargeable lithium-nitrogen dioxide(Li-NO2)*** battery shows a capacity of 884 m Ah g-1 at 50 m A g-1(an actual energy density of 666 Wh kg-1)and a promising electrochemical Faraday efficiency(FE)of 67%.The unique properties of Li-NO2 rechargeable batteries not only provide a way to reduce and recycle NO2 but also highlight the potential of oxidative air pollutants as energy sources for next-generation electrochemical energy storage(EES)systems.

关键词： Li-NO2 battery Nitrogen dioxide energy-storage devices Air pollutants Carbon

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