Improved pseudocapacitive performance of well-defined WO3−x nanoplates. Issue 3 (April 2015)

• Record Type: Journal Article
• Authors: Lee, Seul; Lee, Young-Woo; Kwak, Da-Hee; Kim, Min-Cheol; Lee, Jin-Yeon; Kim, Da-Mi; Park, Kyung-Won
• Is Part Of: Ceramics international. Volume 41:Issue 3(2015)Part B
• Page Start: 4989
• Page End: 4995
• Publication Date: 2015-04
• Subjects: WO3−x -- Nanoplates -- Pseudocapacitor; Ceramics -- Periodicals; Céramique industrielle -- Périodiques; Ceramics; Periodicals; Electronic journals; 666
• DOI: 10.1016/j.ceramint.2014.12.064
• Languages: English
• ISSNs: 0272-8842

Abstract

Abstract: We demonstrate the well-defined tungsten suboxide nanoplates for pseudocapacitors via a low-temperature reduction reaction under hydrogen gas atmosphere. The as-prepared WO3− x reduced at 500 °C using WO3 nanoplates (500-WO3− x ) shows a pure monoclinic structure and single crystalline nanoplates. The 500-WO3− x exhibits much improved pseudocapacitive performance due to W 5+ and W 4+ oxidation states obtained by a reduction process and improved electrical conductivity.