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self-healing Ga-based liquid metal/alloy anodes for rechargeable batteries

Nano Research 2024年第3期17卷 1366-1383页

作者： Meijia Song Zhonghua Zhang School of Energy and Power Jiangsu University of Science and TechnologyZhenjiang 212000China Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials(Ministry of Education) School of Materials Science and EngineeringShandong UniversityJingshi Road 17923Jinan 250061China

With the rapid development of electronics,electric vehicles,and grid energy storage stations,higher requirements have been put forward for advanced secondary *** metal/alloy electrodes have been considered as a promising development direction to achieve excellent electrochemical performance in metal-ion batteries,due to their specific advantages including the excellent electrode kinetics and self-healing ability against microstructural electrode *** conventional liquid batteries,high temperatures are needed to keep electrode liquid and ensure the high conductivity of molten salt electrolytes,which also brings the corrosion and safety ***-based metal/alloys,which can be operated at or near room temperature,are potential candidates to circumvent the above *** this review,the properties and advantages of Ga-based metal/alloys are ***,Ga-based liquid metal/alloys as anodes in various metal-ion batteries are reviewed in terms of their self-healing ability,battery configurations,working mechanisms,and so ***,some views on the future development of Ga-based electrodes in batteries are provided.

关键词： metal-ion batteries Ga-based liquid metal/alloy anodes self-healing capability room temperature

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Thermodynamically self-healing 1D-3D Hybrid Perovskite Solar Cells

Thermodynamically Self-healing 1D-3D Hybrid Perovskite Solar...

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第五届新型太阳能电池学术研讨会

作者： Jiandong Fan Yunping Ma Cuiling Zhang Chong Liu Wenzhe Li Ruud E.I. Schropp Yaohua Mai Institute of New Energy Technology College of Information Science and TechnologyJinan University

Thermal degradation in perovskite solar cells is still an unsettled issue that limits its further development. In this study, we introduced 2-(1 H-pyrazol-1-yl)pyridine(PZPY)into the lead halide 3-dimensional(D) perovskites, which allowed to obtain 1D-3D hybrid perovskite materials. The heterostructure 1D-3D perovskites were proved to be capable of remarkably prolonging the photoluminescence decay lifetime and suppressing charge carrier recombination in comparison to conventional 3D perovskites. The intrinsic properties of thermodynamically stable yet kinetically labile 1D materials allowed the system to alleviate the lattice mismatch and passivate the interface traps of heterojunction region of 1D-3D hybrid perovskites that may occur during the crystal growth process. Importantly, the as-fabricated 1D-3D perovskite solar cells displayed thermodynamically self-healing ability, which was induced through blocking the ion-immigration channels of A-site ions by the flexible 1D perovskite with less densely close-packed structure. Particularly, the power conversion efficiency(PCE) of as-fabricated unencapsulated 1D-3D perovskite solar cells was demonstrated to be reversible under temperature cycling(25-85 °C) at 55% relative humidity(RH), which largely outperformed the pure 3D perovskite solar *** present study provides a facile approach to fabricate 1D-3D perovskite solar cells with high efficiency and long-term stability.

关键词： 1D-3D perovskite self-healing capability thermal stability photovoltaics

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