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Achieving high-capacity and long-life K^(+)storage enabled by constructing yolk-shell Sb_(2)S_(3)@N,S-doped carbon nanorod anodes

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Journal of Energy Chemistry 2023年第1期76卷 547-556,I0014页

作者： Bensheng Xiao Hehe Zhang Zhefei Sun Miao Li Yingzhu Fan Haichen Lin Haodong Liu Bing Jiang Yanbin Shen Ming-Sheng Wang Meicheng Li Qiaobao Zhang Department of Materials Science and Engineering College of MaterialsXiamen UniversityXiamen 361005FujianChina Fujian Key Laboratory of Surface and Interface Engineering for High Performance Materials(Xiamen University) Xiamen 361005FujianChina Department of Nanoengineering University of California San DiegoLa JollaCA92093United States State Key Laboratory of Altermate Electrical Power System with Renewable Energy Sources Schoolof New EnergyNorth China Electric Power UniversityBeijing 102206China i-Lab CAS Center for Excellence in NanoscienceSuzhou Institute of Nano-Tech and Nano-Bionics(SINANO)Chinese Academy of SciencesSuzhou 215123JiangsuChina

As promising anode candidates for potassium-ion batteries(PIBs),antimony sulfide(Sb_(2)S_(3))possesses high specific capacity but suffers from massive volume expansion and sluggish kinetics due to the large K^(+)insertion,resulting in inferior cycling and rate *** address these challenges,a yolk-shell structured Sb_(2)S_(3)confined in N,S co-doped hollow carbon nanorod(YS-Sb_(2)S_(3)@NSC)working as a viable anode for PIBs is *** directly verified by in situ transmission electron microscopy(TEM),the buffer space between the Sb_(2)S_(3)core and thin carbon shell can effectively accommodate the large expansion stress of Sb_(2)S_(3)without cracking the shell and the carbon shell can accelerate electron transport and K^(+)diffusion,which plays a significant role in reinforcing the structural stability and facilitating charge *** a result,the YS-Sb_(2)S_(3)@NSC electrode delivers a high reversible K^(+)storage capacity of 594.58 m A h g^(-1)at 0.1 A g^(-1)and a long cycle life with a slight capacity degradation(0.01%per cycle)for 2000 cycles at 1 A g^(-1)while maintaining outstanding rate ***,utilizing in in situ/ex situ microscopic and spectroscopic characterizations,the origins of performance enhancement and K^(+)storage mechanism of Sb_(2)S_(3)were clearly *** work provides valuable insights into the rational design of high-performance and durable transition metal sulfides-based anodes for PIBs.

关键词： antimony sulfide Yolk-shell structure In situ TEM Potassium-ion batteries Super-stable cyclability

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High-permittivity Sb_(2)S_(3) single-crystal nanorods as a brand-new choice for electromagnetic wave absorption

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Science China Materials 2021年第7期64卷 1733-1741页

作者： Jing Qiao Xue Zhang Chang Liu Zhou Wang Wei Liu Fenglong Wang Jiurong Liu School of Materials Science and Engineering Shandong UniversityJinan 250061China State Key Laboratory of Crystal Materials Shandong UniversityJinan 250100China

The application of antimony sulfide(Sb_(2)S_(3))has been limited mainly to the energy storage and photoelectric conversion ***,in this work,the application of Sb_(2)S_(3) is extended to the field of electromagnetic(EM)wave absorption for the first ***-permittivity Sb_(2)S_(3) singlecrystal nanorods were prepared successfully and exhibited excellent performance,with a low reflection loss of -65.9 dB(13.0 GHz,3.8 mm)and an ultra-wide effective absorption bandwidth of 9.5 GHz(8.5-18.0 GHz,4.1 mm).After excluding the general absorption mechanisms,including conductive losses,interfacial polarization,and dipole polarization,the distinctive single-crystal volume polarization affected by shape anisotropy was *** work not only meets the challenge of a single-component dielectric material design but also introduces a new concept for construction of efficient dielectric EM wave absorption material.

关键词： antimony sulfide single-crystal nanorods high permittivity volume polarization electromagnetic wave absorption

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