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125 results on '"Song, Yue-Xian"'

11. Macroscale preparation of CoS2 nanoparticles for ultra-high fast-charging performance in sodium-ion batteries.

Author

Liu, Yan-Fen, Zhang, Tian, Zhang, Huan-Huan, Huang, Ting-Ting, Wang, Kai, Song, Yue-Xian, Liang, Jun-Fei, Zhang, Yan-Gang, Fan, Wei, and Zhong, Xiao-Bin

Subjects
SODIUM ions, NANOSTRUCTURED materials, ELECTRIC capacity, NANOPARTICLES, MASS production
Abstract

Improving the fast-charging capabilities and energy storage capacity of electric vehicles presents a feasible strategy for mitigating the prevalent concern of range anxiety in the market. Nanostructure electrode materials play a crucial role in this process. However, the current method of preparation is arduous and yields restricted quantities. In view of this, we have devised an innovative approach that provides convenience and efficacy, facilitating the large-scale synthesis of CoS2 nanoparticles, which exhibited exceptional performance. When the current density was 1000 mA g−1, the discharging capacity reached 760 mAh g−1 after 400 cycles. Remarkably, even at an increased current density of 5000 mA g−1, the discharging capacity of CoS2 remained at 685.5 mAh g−1. The ultra-high performance could be attributed to the specific surface area, which minimized the diffusion distance of sodium-ions during the charging and discharging processes and mitigated the extent of structural damage. Our straightforward preparation techniques facilitate the mass production and present a novel approach for the development of cost-effective and high-performing anode materials for sodium-ion batteries. [ABSTRACT FROM AUTHOR]

Published
2024
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12. In Situ Derived Mixed Ion/Electron Conducting Layer on Top of a Functional Separator for High‐Performance, Dendrite‐Free Rechargeable Lithium‐Metal Batteries.

Author

Yan, Min, Wang, Chen‐Yang, Fan, Min, Zhang, Yuying, Xin, Sen, Yue, Junpei, Zeng, Xian‐Xiang, Liang, Jia‐Yan, Song, Yue‐Xian, Yin, Ya‐Xia, Wen, Rui, Liu, Zhitian, Wan, Li‐Jun, and Guo, Yu‐Guo

Subjects
LITHIUM cells, ELECTRIC batteries, ELECTRONS, DENDRITIC crystals, CYCLING safety, ENERGY storage, IONS
Abstract

Rechargeable lithium‐metal batteries (RLBs), which employ the Li‐metal anode to acquire notably boosted specific energy at cell level, represent the "Holy Grail" for "beyond Li‐ion" electrochemical energy storage technology. Currently, the practical use of RLBs is impeded by poor cycling and safety performance, which are derived from high chemical reactivity of metallic Li and uncontrollable formation and propagation of metal dendrites during repeated Li plating/stripping. In this study, a new strategy is demonstrated to stabilize the anode electrochemistry of RLBs by applying a Mg3N2‐decorated functional separator onto the Li‐metal surface. An in situ conversion‐alloying reaction occurring at Li‐separator interface assists formation of a mixed ion/electron conducting layer that consists mainly of Li3N and Li‐Mg solid‐solution. The inorganic interlayer effectively suppresses parasitic reactions at Li‐electrolyte interface while simultaneously homogenizes Li+/e‐ flux across the interface and therefore, contributes to dendrite‐free operation of Li‐metal anode. A Li||LiNi0.6Co0.2Mn0.2O2 battery based on the functional separator delivers a reversible capacity of 129 mAh g‐1 after 600 cycles at 0.5 C, which corresponds to a capacity retention of 75.9%. The preparation of functional separator is scalable and adaptive to battery manufacture, which brings new opportunities to realize high‐energy RLBs with long cycle life and improved safety. [ABSTRACT FROM AUTHOR]

Published
2024
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13. In Situ Derived Mixed Ion/Electron Conducting Layer on Top of a Functional Separator for High‐Performance, Dendrite‐Free Rechargeable Lithium‐Metal Batteries

Author

Yan, Min, primary, Wang, Chen‐Yang, additional, Fan, Min, additional, Zhang, Yuying, additional, Xin, Sen, additional, Yue, Junpei, additional, Zeng, Xian‐Xiang, additional, Liang, Jia‐Yan, additional, Song, Yue‐Xian, additional, Yin, Ya‐Xia, additional, Wen, Rui, additional, Liu, Zhitian, additional, Wan, Li‐Jun, additional, and Guo, Yu‐Guo, additional

Published
2023
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20. Micromechanism in All-Solid-State Alloy-Metal Batteries: Regulating Homogeneous Lithium Precipitation and Flexible Solid Electrolyte Interphase Evolution

Author

Wan, Jing, primary, Song, Yue-Xian, additional, Chen, Wan-Ping, additional, Guo, Hui-Juan, additional, Shi, Yang, additional, Guo, Yu-Jie, additional, Shi, Ji-Lei, additional, Guo, Yu-Guo, additional, Jia, Fei-Fei, additional, Wang, Fu-Yi, additional, Wen, Rui, additional, and Wan, Li-Jun, additional

Published
2020
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29. Dynamic Evolution of a Cathode Interphase Layer at the Surface of LiNi0.5Co0.2Mn0.3O2in Quasi-Solid-State Lithium Batteries

Author

Guo, Hui-Juan, Wang, Huai-Xiang, Guo, Yu-Jie, Liu, Gui-Xian, Wan, Jing, Song, Yue-Xian, Yang, Xin-An, Jia, Fei-Fei, Wang, Fu-Yi, Guo, Yu-Guo, Wen, Rui, and Wan, Li-Jun

Abstract

Intensive understanding of the surface mechanism of cathode materials, such as structural evolution and chemical and mechanical stability upon charging/discharging, is crucial to design advanced solid-state lithium batteries (SSLBs) of tomorrow. Here, via in situatomic force microscopy monitoring, we explore the dynamic evolution process at the surface of LiNi0.5Co0.2Mn0.3O2cathode particles inside a working SSLB. The dynamic formation process of the cathode interphase layer, with an inorganic–organic hybrid structure, was real-time imaged, as well as the evolution of its mechanical property by in situscanning of the Derjaguin–Muller–Toporov modulus. Moreover, different components of the cathode interphase layer, such as LiF, Li2CO3, and specific organic species, were identified in detailat different stages of cycling, which can be directly correlated with the impedance buildup of the battery. In addition, the transition metal migration and the formation of new phases can further exacerbate the degradation of the SSLB. A relatively stable cathode interphase is key to improving the performance of SSLBs. Our findings provide deep insights into the dynamic evolution of surface morphology, chemical components and mechanical properties of the cathode interphase layer, which are pivotal for the performance optimization of SSLBs.

Published
2020
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