Mesoporous transition metal dichalcogenide ME2 (M = Mo, W; E = S, Se) with 2-D layered crystallinity as anode materials for lithium ion batteries
- Authors
- Lee, Yoon Yun; Park, Gwi Ok; Choi, Yun Seok; Shon, Jeong Kuk; Yoon, Jeongbae; Kim, Kyoung Ho; Yoon, Won-Sub; Kim, Hansu; Kim, Ji Man
- Issue Date
- 2016
- Publisher
- ROYAL SOC CHEMISTRY
- Citation
- RSC ADVANCES, v.6, no.17, pp.14253 - 14260
- Indexed
- SCIE
SCOPUS
- Journal Title
- RSC ADVANCES
- Volume
- 6
- Number
- 17
- Start Page
- 14253
- End Page
- 14260
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/24735
- DOI
- 10.1039/c5ra19799f
- ISSN
- 2046-2069
- Abstract
- Mesoporous transition metal dichalcogenides (TMDCs), composed of group VI metals (Mo and W) and chalcogens (S and Se), with 2-D layered crystalline frameworks and 3-D pore structures were successfully prepared via a melting-infiltration assisted nano-replication method using a mesoporous template KIT-6 with cubic Ia3d symmetry. Combined analysis using X-ray diffraction, N2 adsorption–desorption and electron microscopy indicated that the mesoporous TMDCs, thus obtained, exhibited high surface areas (87–105 m2 g−1), large pore volumes (0.21–0.25 cm3 g−1) and well-defined mesopores about 20 nm in diameters. The mesoporous TMDCs showed outstanding rate capabilities up to 2C as well as high reversible lithium storage capacities (MoS2 710 mA h g−1; MoSe2 744 mA h g−1; WS2 501 mA h g−1; WSe2 427 mA h g−1) without a remarkable fading of capacity.
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