Planar on-chip micro-supercapacitors based on graphene by chemical vapor deposition. (4th July 2019)

• Record Type: Journal Article
• Authors: Zhang, Guangyu; Liu, Jiabao
• Is Part Of: Ferroelectrics. Volume 546(2019)
• Page Start: 67
• Page End: 73
• Publication Date: 2019-07-04
• Subjects: micro-supercapacitors -- on-chip -- graphene -- chemical vapor deposition; Ferroelectricity -- Periodicals; Ferroelectric crystals -- Periodicals; 537
• DOI: 10.1080/00150193.2019.1592458
• Languages: English
• ISSNs: 0015-0193

Abstract

Abstract: Micro-supercapacitors (MSCs) are becoming one of the research frontiers in the field of chip storage devices. Here ultrahigh scanning rate, narrowing, planar interdigital graphene-based MSCs were fabricated by chemical vapor deposition (CVD) and photolithographic micro-fabrication. The energy density was up to 34.48 mWh cm −3 because of the interdigital architecture and monolayer graphene electrode. In addition, capacitance retention rates remained over 93.80% after 2500 charge/discharge cycles, which showed graphene-based MSCs good stability. More importantly, the MSCs can be operated well at an ultrahigh scan rate of up to 5000 V s −1 . This paper provides an important reference for chip storage devices.