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https://doi.org/10.1016/j.nanoen.2020.104482
Title: | Building vertically-structured, high-performance electrodes by interlayer-confined reactions in accordion-like, chemically expanded graphite | Authors: | Dong, Lei Zhang, Long Lin, Shan Chen, Zhongxin Wang, Yannan Zhao, Xiaoxu Wu, Tianqi Zhang, Jiajia Liu, Wei Lu, Hongbin Loh, Kian Ping |
Keywords: | Science & Technology Physical Sciences Technology Chemistry, Physical Nanoscience & Nanotechnology Materials Science, Multidisciplinary Physics, Applied Chemistry Science & Technology - Other Topics Materials Science Physics Vertically-structured electrode Energy storage Interlayer-confined reaction Ion-transport Chemically-expanded graphite GRAPHENE CONSTRUCTION CAPACITANCE NANOWALLS DIFFUSION DESIGN ARRAYS CARBON |
Issue Date: | 1-Apr-2020 | Publisher: | ELSEVIER | Citation: | Dong, Lei, Zhang, Long, Lin, Shan, Chen, Zhongxin, Wang, Yannan, Zhao, Xiaoxu, Wu, Tianqi, Zhang, Jiajia, Liu, Wei, Lu, Hongbin, Loh, Kian Ping (2020-04-01). Building vertically-structured, high-performance electrodes by interlayer-confined reactions in accordion-like, chemically expanded graphite. NANO ENERGY 70. ScholarBank@NUS Repository. https://doi.org/10.1016/j.nanoen.2020.104482 | Abstract: | © 2020 Graphene has attracted major interests as electrode materials for energy storage applications. However, the major limitation of using blade- or spin-coated graphene films for fabricating electrode is that the basal plane of the flat-lying graphene is orthogonal to the direction of charge transport, causing sluggish charge transfer kinetics for the coated graphene film. Here we propose a general, scalable strategy to prepare vertically-structured hybrid electrodes using accordion-like, chemically expanded graphite (CEG). The coated CEG rods possess two-dimensional (2D) interlayer galleries that are vertically aligned with respect to the substrate because of their large length-diameter ratio, which facilitates high-efficiency ion transport. Due to its excellent wettability and high electrochemical surface areas, these interlayer galleries allow a high loading of redox-active (RA) materials, including metal (Pt), metal hydroxide (Ni(OH)2, Fe2O3 and MnO2) or metal dichalcogenide (MoS2). As an example, Ni(OH)2-infiltrated CEG shows excellent rate-performance and long-term cycling stability when used as electrochemical electrodes in lithium-ion batteries and supercapacitors. | Source Title: | NANO ENERGY | URI: | https://scholarbank.nus.edu.sg/handle/10635/168830 | ISSN: | 22112855 22113282 |
DOI: | 10.1016/j.nanoen.2020.104482 |
Appears in Collections: | Staff Publications Elements |
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