Silicon Diphosphide: A Si-Based Three-Dimensional Crystalline Framework as a High Performance Li-Ion Battery Anode
- Authors
- Kwon, Hyuk-Tae; Lee, Churl Kyoung; Jeon, Ki-Joon; Park, Cheol-Min
- Issue Date
- Jun-2016
- Publisher
- AMER CHEMICAL SOC
- Keywords
- lithium-ion batteries; anode materials; silicon phosphide; silicon-based compounds; phosphorus-based compounds
- Citation
- ACS NANO, v.10, no.6, pp 5701 - 5709
- Pages
- 9
- Journal Title
- ACS NANO
- Volume
- 10
- Number
- 6
- Start Page
- 5701
- End Page
- 5709
- URI
- https://scholarworks.bwise.kr/kumoh/handle/2020.sw.kumoh/22508
- DOI
- 10.1021/acsnano.6b02727
- ISSN
- 1936-0851
1936-086X
- Abstract
- The development of an electrode material for rechargeable Li-ion batteries (LIBs) and the understanding of its reaction mechanism play key roles in enhancing the electrochemical characteristics of LIBs for use in various portable electronics and electric vehicles. Here, we report a three-dimensional (3D) crystalline-framework-structured silicon diphosphide (SiP2) and its interesting electrochemical behaviors for superior LIBs. During Li insertion in the SiP2, a three step electrochemical reaction mechanism, sequentially comprised of a topotactic transition (0.55-2 V), an amorphization (0.25-2 V), and a conversion (0-2 V), was thoroughly analyzed. On the basis of the three-step electrochemical reaction mechanism, excellent electrochemical properties, such as high initial capacities, high initial Coulombic efficiencies, stable cycle behaviors, and fast-rate capabilities, were attained from the preparation of a nanostructured SiP2/C composite. This 3D crystalline-framework-structured SiP2 compound will be a promising alternative anode material in the realization and mass production of excellent, rechargeable LIBs.
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Collections - Department of Materials Science and Engineering > 1. Journal Articles
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