ACS Nano· 2012Q1
3D Graphene–Cobalt Oxide Electrode for High-Performance Supercapacitor and Enzymeless Glucose Detection
- 1,592citations
- Q1SCImago
- 2012year
Short summary
A novel 3D graphene/Co(3)O(4) composite electrode delivers a high specific capacitance of ~1100 F g(-1) at 10 A g(-1) and detects glucose with ultrahigh sensitivity (3.39 mA mM(-1) cm(-2}) and a low detection limit (<25 nM).
AI-generated from the title and abstract; the full text is not read.
Key points
- 3D graphene/Co(3)O(4) composite electrodes were synthesized via a hydrothermal method.
- The electrode achieved a specific capacitance of ~1100 F g(-1) at 10 A g(-1) with excellent cycling stability.
- The material enabled enzymeless glucose detection with ultrahigh sensitivity of 3.39 mA mM(-1) cm(-2).
- A low detection limit of <25 nM for glucose was achieved (S/N = 8.5).
AI-generated from the title and abstract; the full text is not read.
Abstract
Using a simple hydrothermal procedure, cobalt oxide (Co(3)O(4)) nanowires were in situ synthesized on three-dimensional (3D) graphene foam grown by chemical vapor deposition. The structure and morphology of the resulting 3D graphene/Co(3)O(4) composites were characterized by scanning electron microscopy, transmission electron microscopy, X-ray diffraction, and Raman spectroscopy. The 3D graphene/Co(3)O(4) composite was used as the monolithic free-standing electrode for supercapacitor application and for enzymeless electrochemical detection of glucose. We demonstrate that it is capable of delivering high specific capacitance of ∼1100 F g(-1) at a current density of 10 A g(-1) with excellent cycling stability, and it can detect glucose with a ultrahigh sensitivity of 3.39 mA mM(-1) cm(-2) and a remarkable lower detection limit of <25 nM (S/N = 8.5).
The authors' abstract, as published at the source. ACS Nano, 2012 · DOI ↗
Continue with a free account
Ask the paper: 3 free questions a day about this paper; save it, get its citation, new summaries every day for your field. Takeaways are Premium.
Continue free on the webSign in with Google or Apple; no card needed. You come back to this paper.
On your phone:
Field: Electronic, Optical and Magnetic Materials
Electronic, Optical and Magnetic MaterialsMaterials Science