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Ultra small few layer MoS2 embedded into three-dimensional macro-micro-mesoporous carbon as a high performance lithium ion batteries anode with superior lithium storage capacity
- Source :
- Electrochimica Acta. 317:638-647
- Publication Year :
- 2019
- Publisher :
- Elsevier BV, 2019.
-
Abstract
- Molybdenum disulfide (MoS2) exhibits additional reversible capacity beyond their theoretical value is promising candidates for electrodes of lithium ion batteries (LIBs). However, the sluggish kinetics, low conductivity and self-aggregating of MoS2 nanosheets hinder the practical application. Herein, ultra small few layer MoS2 combined with carbon hybrids of macro-micro-mesoporous structure (MoS2/MmC) is prepared via a simple and scalable liquid-solid-gas three-phase interface self-assembly process. When employed as anode for lithium ion batteries, such a clever structure possesses superior performance: exhibits discharge capacity of 938 mAh g−1 at current density of 200 mA g−1 following 100 cycles, and reveals reversible capacity of 843 mAh g−1 at current density of 2 A g−1 after 1000 cycles. The excellent performance is attributed to the rational design of electrode structure: ultra small few layer MoS2 nanosheets offer abundant active sites, while the 3D porous architectures are in favor of enhancing the mass-transportation and alleviating the volume expansion. These structural features greatly enhance surface reaction kinetics and facilitate the charge transport. Furthermore, Ex-situ XRD, FESEM are used to confirm the phase transformation of MoS2/MmC and verify the structure stability during the cycling. It is believed that our work opens up a new possible route for the industrial production of MoS2 based anode materials.
- Subjects :
- Chemical substance
Materials science
General Chemical Engineering
chemistry.chemical_element
02 engineering and technology
010402 general chemistry
021001 nanoscience & nanotechnology
01 natural sciences
0104 chemical sciences
Anode
chemistry.chemical_compound
chemistry
Chemical engineering
Electrode
Electrochemistry
Lithium
0210 nano-technology
Science, technology and society
Carbon
Molybdenum disulfide
Current density
Subjects
Details
- ISSN :
- 00134686
- Volume :
- 317
- Database :
- OpenAIRE
- Journal :
- Electrochimica Acta
- Accession number :
- edsair.doi...........9cae9e92b88b0afc4774f84e7eb2a065