Thermally Reduced Graphite-Oxide and Iron-Oxide Composite for Supercapacitor Applications

Chinonso, Ugwumadu; Jeong, Hae Kyung

doi:10.3938/npsm.70.239

Cited by 2 publications

(1 citation statement)

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“…The linear curve between I p and ʋ 1/2 illustrates increment in peak current with increasing scan rate. The Randles‐Sevcik equation is as follows: I p = 2.69 × 10 5 n 3/2 ʋ 1/2 D 1/2 AC, where n, ʋ, D, A, and C are the number of electrons contributed in the reaction, scan rate, diffusion coefficient (cm 2 s −1 ), electroactive surface area of the electrode and electrode concentration (mol L −1 ), respectively 54 . Increased peak current at high‐scan rate accounts for higher diffusion rate.…”

Section: Resultsmentioning

confidence: 99%

Development of soft polymer blend for copper ion detection by electrochemical route

Mane

Joshi

Shirsat

et al. 2023

J of Applied Polymer Sci

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In the present work, we have prepared polymer blend of polyvinyl butyral (PVB) and poly (3,4-ethylenedioxythiophene):poly(styrene sulfonate) (PEDOT: PSS) by solution casting route. Blends were tested for various structural, morphological, and electrochemical techniques. Structural properties were investigated by XRD technique exploring the contribution conducting polymer in host system PVB exhibit amorphous nature. COO functional group contributed in blend configuration was confirmed by FTIR technique. Clustering of PEDOT:PSS in blend system were observed by scanning electron microscopy.Subatomic surface topology and increased roughness due to blending concentration of conducting polymer were analyzed by probe microscopy techniques.Increased softness of blends was confirmed by shore "A" durometer test. PVB/PEDOT:PSS blend was drop casted on glassy carbon electrode and employed for detection of various metal ions. It was deployed for electrochemical sensing of Cu 2+ ion. Electrochemical sensing investigation was done by differential pulse voltammetry technique. Performance of blends at 4.5 pH, 200 s deposition time and À1.2 V deposition potential was more accurate and sensitive toward detection of Cu 2+ ion. The developed electrochemical sensor exhibited rapid sensing response in the range of 1.6 to 8.3 μM. Furthermor,e an influence of many analytical parameters such as pH, deposition time and deposition potential on Cu 2+ ion investigation were disclosed. This investigation may be feasible to construct a very simple, fast, and efficient electrochemical sensing system for toxic heavy metals at low-level concentration.

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Section: Resultsmentioning

confidence: 99%