Electrochemical activation to enhance the volumetric performance of carbon nanotube electrodes

Chen, Daniel Rui; Adusei, Paa Kwasi; Chitranshi, Megha; Fang, Yanbo; Johnson, Kenneth I.; Schulz, Mark J.; Shanov, Vesselin

doi:10.1016/j.apsusc.2020.148448

Cited by 26 publications

(13 citation statements)

References 73 publications

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“…The Randles–Sevcik equation (Eq. 1 ) was utilized to quantitatively determine the effective surface area of the electrode [ 26 ]. This equation describes the linear relationship between peak current ( ) and the square root of the scan rate ( ).…”

Section: Resultsmentioning

confidence: 99%

Synthesis of chitosan-grafted poly-acrylic acid (CTS-g-PAA) hydrogel and its potential application in biosensors for signal enhancing and bioanalysis

Alipour

Norouzi

Yousefzadeh

et al. 2021

J Mater Sci: Mater Electron

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Nowadays, hydrogels have been attracted a lot of interest due to their immense potential in different fields such as biomedicine and biotechnology. Biodegradable and biocompatible pH-sensitive chitosan-grafted polyacrylic acid (CTS-g-PAA) hydrogel was synthesized by grafting an acrylic acid monomer onto chitosan at the presence of methylene bisacrylamide as a cross-linking agent and ammonium persulphate as an initiator. FT-IR spectroscopy and scanning electron microscopy (SEM) were used to analyze the properties of the obtained hydrogel. The synthesized hydrogel is suitable for the delivery of many hydrophilic drugs or species. Using a multi-walled carbon nanotube modified-glassy carbon electrode (CNT-GCE), the loading and release conditions of Nile Blue (NB) as an electroactive compound were evaluated utilizing the differential pulse voltammetry (DPV) and cyclic voltammetry (CV). The effect of various parameters on the electrochemical signal of NB was investigated, and the optimal conditions for the efficient performance of hydrogel to delivery of NB were obtained. The electrocatalytic current values show linear dependence to NB concentration in the range of 0.098 – 0.971 μM while the detection limit of this electrochemical platform was 12.3 nM. The unique proposed hydrogel with the electroactive NB has a broad range of possible applications in biosensors for signal enhancement and bioanalysis. Supplementary Information The online version contains supplementary material available at 10.1007/s10854-021-06939-7.

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Section: Resultsmentioning

confidence: 99%

Synthesis of chitosan-grafted poly-acrylic acid (CTS-g-PAA) hydrogel and its potential application in biosensors for signal enhancing and bioanalysis

Alipour

Norouzi

Yousefzadeh

et al. 2021

J Mater Sci: Mater Electron

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“…Various factors—such as the synthesis temperature, gas flow rate, and the pressure inside the glove box—can affect the condition of the sock; hence, the process must be carefully tuned to avoid breaking of the sock. Further information on our synthesis process can be found in our previous works [ 22 , 23 ].…”

Section: Methodsmentioning

confidence: 99%

Chlorosulfonic Acid Stretched Carbon Nanotube Sheet for Flexible and Low-Voltage Heating Applications

et al. 2021

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The carbon nanotube (CNT) is celebrated for its electrothermal property, which indicates the capability of a material to transform electrical energy into heat due to the Joule effect. The CNT nanostructure itself, as a one-dimensional material, limits the electron conduction path, thereby creating a unique heating phenomenon. In this work, we explore the possible correlation between CNT alignment in sheets and heating performance. The alignment of carbon nanotubes is induced by immersion and stretching in chlorosulfonic acid (CSA) solution. The developed CSA-stretched CNT sheet demonstrated excellent heating performance with a fast response rate of 6.5 °C/s and reached 180 °C in less than 30 s under a low voltage of 2.5 V. The heating profile of the stretched CNT sheet remained stable after bending and twisting movements, making it a suitable heating material for wearable devices, heatable smart windows, and in de-icing or defogging applications. The specific strength and specific conductance of the CSA-stretched CNT sheet also increased five- and two-fold, respectively, in comparison to the pristine CNT sheet.

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“…[ 96 ] Carbon nanotubes were electrochemically treated to increase their surface oxygen‐containing functional groups toward higher capacitance. [ 97 ] The most representative MXene, Ti 3 C 2 T x , was activated by a controlled anodic oxidation method in acidic electrolyte for high‐rate pseudocapacitive. [ 94 ] The greatly enhanced rate performance arose from the increased interlayer spacing of Ti 3 C 2 T x and created pores in the nanosheets, which improved ion transport.…”

Section: Applications In Aqueous Batteries and Electrochemical Capaci...mentioning

confidence: 99%

The Emerging Electrochemical Activation Tactic for Aqueous Energy Storage: Fundamentals, Applications, and Future

Peng

Zhang

Wang

et al. 2022

Adv Funct Materials

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The exploration of facile, low‐cost, and universal synthetic strategies for high‐performance aqueous energy storage is extremely urgent. The electrochemical activation tactic is an emerging synthetic technique that can turn inert or weakly active substances into highly active materials for aqueous energy storage via in situ or ex situ electrochemical treatment, which is receiving increasing attention due to its advantages of facile operation, variable control, high efficiency, flexibility, and wide applicability. This review first discusses the definition and general implementing methods of the electrochemical activation tactic, as well as the fundamental activation mechanisms, and then summarizes its applications in various aqueous systems, including rechargeable batteries and electrochemical capacitors with different charge carriers. The remaining challenges, potential solutions, and further perspectives are discussed finally. It is believed that this review will provide a timely summary and new inspiration for cutting‐edge research on advanced aqueous energy storage devices.

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Electrochemical activation to enhance the volumetric performance of carbon nanotube electrodes

Cited by 26 publications

References 73 publications

Synthesis of chitosan-grafted poly-acrylic acid (CTS-g-PAA) hydrogel and its potential application in biosensors for signal enhancing and bioanalysis

Synthesis of chitosan-grafted poly-acrylic acid (CTS-g-PAA) hydrogel and its potential application in biosensors for signal enhancing and bioanalysis

Chlorosulfonic Acid Stretched Carbon Nanotube Sheet for Flexible and Low-Voltage Heating Applications

The Emerging Electrochemical Activation Tactic for Aqueous Energy Storage: Fundamentals, Applications, and Future

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