首页|A multi-kernel-shell indium selenide@carbon nanosphere enabling high-performance lithium-ion batteries

A multi-kernel-shell indium selenide@carbon nanosphere enabling high-performance lithium-ion batteries

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Indium selenide has garnered significant attention for high volumetric capacities,but is currently plagued by the sluggish charge transfer kinetics,severe volume effect,and rapid capacity degradation that hinder their practical applications.Herein,we design,synthesize,and characterize a multi-kernel-shell structure comprised of indium selenide encapsulated within carbon nanospheres(referred to as m-K-S In2Se3@C)through an integrated approach involving a hydrothermal method followed by a gaseous selenization process.Importantly,experimental measurements and density functional theory calculations confirm that the m-K-S In2Se3@C not only improve the adsorption capability for Li-ions but also lower the energy barrier for Li-ions diffusion.Profiting from numerous contact points,shorter diffusion distances and an improved volume buffering effect,the m-K-S In2Se3@C achieves an 800 mA h g-1 capacity over 1000 loops at 1000 mA g-1,a 520 mA h g-1 capacity at 5000 mA g-1 and an energy density of 270 Wh kg-1 when coupled with LiFePO4,surpassing most related anodes reported before.Broadly,the m-K-S struc-ture with unique nano-micro structure offers a new approach to the design of advanced anodes for LIBs.

Multi-kernel-shell structureIn2Se3AnodeLi-ion batteries

Sihao Wang、Zhuoming Jia、Ying Zhao、Yanhong Li、Xianglong Kong、Yongde Yan、Fei He、Milin Zhang、Linzhi Wu、Piaoping Yang、Wenwu Li、Meilin Liu、Zhiliang Liu

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College of Material Sciences and Chemical Engineering,Harbin Engineering University,Harbin 150001,Heilongjiang,China

School of Chemical Engineering,Sungkyunkwan University 2066,Seobu-ro,Jangan-gu,Suwon 440-746,Republic of Korea

College of Aerospace and Civil Engineering,Harbin Engineering University,Harbin 150001,Heilongjiang,China

School of Materials Science & Engineering,Georgia Institute of Technology,Atlanta,GA 30332,USA

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National Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaHeilongjiang Provincial Natural Science Foundation of ChinaChina Postdoctoral Science FoundationChina Postdoctoral Science FoundationFundamental Research Funds for the Central Universities

2210106551972075YQ2021B0012023T1601532020M681075

2024

10.1016/j.jechem.2024.04.051

能源化学
中国科学院大连化学物理研究所 中国科学院成都有机化学研究所

能源化学

CSTPCDEI
影响因子：0.654
ISSN：2095-4956
年,卷(期)：2024.96(9)