Hierarchical CoS2/N-Doped Carbon@MoS2 Nanosheets with Enhanced Sodium Storage Performance

Xiao, Fengping1,2; Yang, Xuming3; Wang, Hongkang4; Yu, Denis Y. W.5,6; Rogach, Andrey L.1,2

2020-12-09

10.1021/acsami.0c15793

ACS Applied Materials & Interfaces   影响因子和分区

1944-8244

1944-8252

We introduce a hierarchical nanostructure of CoS2/N-doped carbon@MoS2 comprising two transition-metal sulfides CoS2 and MoS2, with enhanced sodium storage performance in sodium-ion batteries. A micron-sized Co metal-organic framework (MOF) is transformed into a CoS2/N-doped carbon composite, followed by a solvothermal growth of MoS2 nanosheets on the surface. The resulting composite material offers several specific advantages for sodium storage: (i) accelerated sodium-ion diffusion kinetics due to its heterogeneous interface; (ii) shortened ion diffusion path and exposed active sites for sodium storage due to its hierarchical nanosheet architecture; and (iii) homogeneous nitrogen doping of the MOF-derived carbon, which is beneficial for electronic conductivity. Due to these merits, this composite exhibits excellent electrochemical performance with a specific capacity of 596 mAh g(-1) after 100 cycles at 0.1 A g(-1) and 395 mAh g(-1) at 5.0 A g(-1).

composite hierarchical structure transition-metal sulfides metal-organic frameworks sodium-ion battery

SCI ; EI

英语

其他

City University of Hong Kong through the SRG projects[7005080,7005285] ; State Key Laboratory of Electrical Insulation and Power Equipment[EIPE19127] ; China Postdoctoral Science Foundation[2019M663695]

Science & Technology - Other Topics ; Materials Science

Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary

WOS:000599505200036

AMER CHEMICAL SOC

20205109663749

Metal ions ; Sodium-ion batteries ; Carbon carbon composites ; Nanosheets ; Organometallics ; Crystalline materials ; Molybdenum compounds ; Interfaces (materials) ; Layered semiconductors ; Storage (materials) ; Transition metals

Structural Materials Other Than Metal, Plastics or Wood:415.4 ; Metallurgy and Metallography:531 ; Metallurgy:531.1 ; Storage:694.4 ; Secondary Batteries:702.1.2 ; Semiconducting Materials:712.1 ; Nanotechnology:761 ; Organic Compounds:804.1 ; Solid State Physics:933 ; Crystalline Solids:933.1 ; Materials Science:951

Web of Science

1.City Univ Hong Kong, Dept Mat Sci & Engn, Kowloon, Hong Kong, Peoples R China
2.City Univ Hong Kong, Ctr Funct Photon CFP, Kowloon, Hong Kong, Peoples R China
3.Southern Univ Sci & Technol, Dept Mat Sci & Engn, Shenzhen 518055, Guangdong, Peoples R China
4.Xi An Jiao Tong Univ, Ctr Nanomat Renewable Energy CNRE, Sch Elect Engn, State Key Lab Elect Insulat & Power Equipment, Xian 710049, Peoples R China
5.City Univ Hong Kong, Sch Energy & Environm, Kowloon, Hong Kong, Peoples R China
6.City Univ Hong Kong, Ctr Super Diamond & Adv Films COSDAF, Kowloon, Hong Kong, Peoples R China

Xiao, Fengping,Yang, Xuming,Wang, Hongkang,et al. Hierarchical CoS2/N-Doped Carbon@MoS2 Nanosheets with Enhanced Sodium Storage Performance[J]. ACS Applied Materials & Interfaces,2020,12(49):54644-54652.

Xiao, Fengping,Yang, Xuming,Wang, Hongkang,Yu, Denis Y. W.,&Rogach, Andrey L..(2020).Hierarchical CoS2/N-Doped Carbon@MoS2 Nanosheets with Enhanced Sodium Storage Performance.ACS Applied Materials & Interfaces,12(49),54644-54652.

Xiao, Fengping,et al."Hierarchical CoS2/N-Doped Carbon@MoS2 Nanosheets with Enhanced Sodium Storage Performance".ACS Applied Materials & Interfaces 12.49(2020):54644-54652.