Chalcogenide solution-mediated activation protocol for scalable and ultrafast synthesis of single-crystalline 1-D copper sulfide for supercapacitors
- Title
- Chalcogenide solution-mediated activation protocol for scalable and ultrafast synthesis of single-crystalline 1-D copper sulfide for supercapacitors
- Author
- 홍진표
- Keywords
- HIGH-RATE PERFORMANCE; HIERARCHICAL STRUCTURES; ENHANCED PERFORMANCE; GRAPHENE NANOSHEETS; METAL CHALCOGENIDES; COBALT SULFIDE; LONG-TERM; STORAGE; ELECTRODE; ARRAYS
- Issue Date
- 2019-02
- Publisher
- ROYAL SOC CHEMISTRY
- Citation
- JOURNAL OF MATERIALS CHEMISTRY A, v. 7, NO 6, Page. 2529-2535
- Abstract
- Traditional synthetic routes for transition metal sulfides typically involve solution and thermal-based processes to exploit their favorable pseudo-capacitive properties. However, there is a practical need to develop alternative processes to fabricate metal sulfide electrodes because of the time-consuming processes (˃ 12 h), additional heat-treatment to active reactants, relatively high post-heat-treatment temperature (200-400 degrees C) and non-scalable nature of existing synthetic routes. Herein, utilizing a solution-based sulfur precursor, one-dimensional single-crystalline Cu2S nanostructures have been successfully prepared via a solution-based direct synthesis process within 10 min at room temperature without the need for thermal treatment steps. The fabricated electrode exhibits a capacitance of 750 mF cm(-2) at a current density of 2 mA cm(-2). Moreover, the rate capacitance is maintained at about 82.3% as the current density is increased to 40 mA cm(-2), and the capacity retains 90.5% of the initial value after 20 000 cycles. Importantly, as this method involves a solution-based formulation it is compatible with roll-to-roll processes, which is promising for mass and scalable production of the electrodes. The synthetic method ensures a facile and efficient approach to fabricating scalable one-dimensional single crystalline Cu2S nanostructures, highlighting the uniqueness of the solutionbased sulfur activation method.
- URI
- https://pubs.rsc.org/en/content/articlelanding/2019/TA/C8TA10743B#!divAbstracthttps://repository.hanyang.ac.kr/handle/20.500.11754/135641
- ISSN
- 2050-7488; 2050-7496
- DOI
- 10.1039/c8ta10743b
- Appears in Collections:
- COLLEGE OF NATURAL SCIENCES[S](자연과학대학) > PHYSICS(물리학과) > Articles
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