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Engineering Unique Ball-In-Ball Structured (Ni0.33Co0.67)9S8@C Nanospheres for Advanced Sodium Storage.
ACS Appl Mater Interfaces 2019; 11(31):27805-27812AA

Abstract

Constructing hollow architectures based on metal sulfides is of great interest for high-performance electrode materials for sodium-ion batteries because of their intriguing properties and various applications. However, the relatively low volumetric density and high fragile structure are the obstacles blocking the development of hollow-structured electrode materials. In this work, ball-in-ball structured (Ni0.33Co0.67)9S8@C nanospheres have been synthesized by using NiCo-glycerate as the precursor via solvothermal reaction, which was followed by a carbon coating treatment. In this structural design, hollow cavities are generated between the inner and outer balls to effectively accommodate the volume changes of the metal sulfides in the processes of charging/discharging, whereas the uniform carbon coating can increase the electrical conductivity and maintain the structural stability during repeated cycling. The Rietveld refinement, in situ X-ray diffraction, and ex situ X-ray photoelectron spectroscopy analyses provide evidence for an enlarged lattice parameter, weaker Co-S and Ni-S bondings, and a synergistic effect in (Ni0.33Co0.67)9S8@C toward boosting the conversion reaction and reversible formation of sulfur in the fully charged state, with sulfur trapped within the composite to additionally account for the superior cycling stability of this material. Capacitive behavior has been verified to dominate the electrochemical reaction, enabling fast charge-transport kinetics. Impressively, the double structural protection combined with the free hollow space and complete carbon layer endows the (Ni0.33Co0.67)9S8@C nanospheres with good electrochemical performance, featuring high cyclability and good rate capability.

Authors+Show Affiliations

College of Chemistry and Molecular Engineering , Zhengzhou University , Zhengzhou , Henan Province 450001 , PR China.College of Chemistry and Molecular Engineering , Zhengzhou University , Zhengzhou , Henan Province 450001 , PR China.Institute for Superconducting & Electronic Materials , University of Wollongong , Wollongong , NSW 2500 , Australia.College of Chemistry and Molecular Engineering , Zhengzhou University , Zhengzhou , Henan Province 450001 , PR China.College of Chemistry and Molecular Engineering , Zhengzhou University , Zhengzhou , Henan Province 450001 , PR China.College of Chemistry and Molecular Engineering , Zhengzhou University , Zhengzhou , Henan Province 450001 , PR China.College of Chemistry and Molecular Engineering , Zhengzhou University , Zhengzhou , Henan Province 450001 , PR China.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

31290650

Citation

Li, Shuaihui, et al. "Engineering Unique Ball-In-Ball Structured (Ni0.33Co0.67)9S8@C Nanospheres for Advanced Sodium Storage." ACS Applied Materials & Interfaces, vol. 11, no. 31, 2019, pp. 27805-27812.
Li S, Li C, Pang WK, et al. Engineering Unique Ball-In-Ball Structured (Ni0.33Co0.67)9S8@C Nanospheres for Advanced Sodium Storage. ACS Appl Mater Interfaces. 2019;11(31):27805-27812.
Li, S., Li, C., Pang, W. K., Zhao, Z., Zhang, J., Liu, Z., & Li, D. (2019). Engineering Unique Ball-In-Ball Structured (Ni0.33Co0.67)9S8@C Nanospheres for Advanced Sodium Storage. ACS Applied Materials & Interfaces, 11(31), pp. 27805-27812. doi:10.1021/acsami.9b07214.
Li S, et al. Engineering Unique Ball-In-Ball Structured (Ni0.33Co0.67)9S8@C Nanospheres for Advanced Sodium Storage. ACS Appl Mater Interfaces. 2019 Aug 7;11(31):27805-27812. PubMed PMID: 31290650.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Engineering Unique Ball-In-Ball Structured (Ni0.33Co0.67)9S8@C Nanospheres for Advanced Sodium Storage. AU - Li,Shuaihui, AU - Li,Chuanqi, AU - Pang,Wei Kong, AU - Zhao,Zhipeng, AU - Zhang,Jianmin, AU - Liu,Zhongyi, AU - Li,Dan, Y1 - 2019/07/23/ PY - 2019/7/11/pubmed PY - 2019/7/11/medline PY - 2019/7/11/entrez KW - (NiCo)S KW - anode material KW - ball-in-ball structure KW - carbon coating KW - sodium ion batteries SP - 27805 EP - 27812 JF - ACS applied materials & interfaces JO - ACS Appl Mater Interfaces VL - 11 IS - 31 N2 - Constructing hollow architectures based on metal sulfides is of great interest for high-performance electrode materials for sodium-ion batteries because of their intriguing properties and various applications. However, the relatively low volumetric density and high fragile structure are the obstacles blocking the development of hollow-structured electrode materials. In this work, ball-in-ball structured (Ni0.33Co0.67)9S8@C nanospheres have been synthesized by using NiCo-glycerate as the precursor via solvothermal reaction, which was followed by a carbon coating treatment. In this structural design, hollow cavities are generated between the inner and outer balls to effectively accommodate the volume changes of the metal sulfides in the processes of charging/discharging, whereas the uniform carbon coating can increase the electrical conductivity and maintain the structural stability during repeated cycling. The Rietveld refinement, in situ X-ray diffraction, and ex situ X-ray photoelectron spectroscopy analyses provide evidence for an enlarged lattice parameter, weaker Co-S and Ni-S bondings, and a synergistic effect in (Ni0.33Co0.67)9S8@C toward boosting the conversion reaction and reversible formation of sulfur in the fully charged state, with sulfur trapped within the composite to additionally account for the superior cycling stability of this material. Capacitive behavior has been verified to dominate the electrochemical reaction, enabling fast charge-transport kinetics. Impressively, the double structural protection combined with the free hollow space and complete carbon layer endows the (Ni0.33Co0.67)9S8@C nanospheres with good electrochemical performance, featuring high cyclability and good rate capability. SN - 1944-8252 UR - https://www.unboundmedicine.com/medline/citation/31290650/Engineering_unique_ball-in-ball_structured_(Ni0.33Co0.67)9S8@C_nanospheres_for_advanced_sodium_storage L2 - https://dx.doi.org/10.1021/acsami.9b07214 DB - PRIME DP - Unbound Medicine ER -