Oxygen vacancies of NiMoO<sub>4</sub> nanoneedles on Ni foam for high-performance asymmetric supercapacitors

Xu, Ruixiang; Zhang, Limei; Ji, Zhengyang; Liu, Ying; Guo, Rui; Jiang, Yi

doi:10.1039/d4nj00252k

New J. Chem.

2024

DOI: 10.1039/d4nj00252k

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Oxygen vacancies of NiMoO₄ nanoneedles on Ni foam for high-performance asymmetric supercapacitors

Ruixiang Xu,

Limei Zhang,

Zhengyang Ji

et al.

Abstract: Although bimetallic oxide electrodes have excellent physical and chemical properties, as well as a high theoretical capacity, their current low energy density and poor cycling stability restrict their application in supercapacitors (SCs).

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Cited by 3 publications

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A Wearable, Highly Sensitive Piezoresistive Pressure Sensor Based on MXene/NiMoO₄@CMF and Mimicking the Hedgehog Skin Spike Structure for Its Real-Time Monitoring of Human Movement

Zhang,

Jin,

Pang

et al. 2024

ACS Appl. Electron. Mater.

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Flexible piezoresistive pressure sensors have received much attention due to their potential for applications in personalized real-time health detection, human-computer interaction, and the Internet of Things (IoT). However, achieving a fast response and high sensitivity while keeping the cost low remains a key concern for researchers. In this paper, we simulated the spiky surface of hedgehog skin by hydrothermal growth of nickel molybdate on a carbonized sponge. Based on this, the MXene material was compounded by a process of immersion and sonication, and thus the MXene/ NiMoO 4 @CMF (MNC) was successfully prepared. After assembly into an MNC piezoresistive pressure sensor, it shows good performance. In terms of sensitivity, the sensitivity is 31.1 kPa −1 in the pressure range of 0−10 kPa, 15.7 kPa −1 in the range of 10−15 kPa, and 3.3 kPa −1 in the range of 15−64 kPa. Moreover, it also has a fast response capability (500 ms) and excellent cyclic stability (95.7%). In addition, we integrated the MNC sensor with the ESP8266 WiFi Module IoT Development Board and an autonomously programmed UI interface. Therefore, it is capable of monitoring human health in real time and displaying abnormal statuses in the UI interface when the test value is outside the normal range. In summary, based on its high sensing performance and integrated application, the MNC sensor has a wide range of potential applications in wearable devices, IoT, and health monitoring.

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A Wearable, Highly Sensitive Piezoresistive Pressure Sensor Based on MXene/NiMoO₄@CMF and Mimicking the Hedgehog Skin Spike Structure for Its Real-Time Monitoring of Human Movement

Zhang,

Jin,

Pang

et al. 2024

ACS Appl. Electron. Mater.

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In situ synthesis of NiCo₂O₄/carbon nanocomposites: effect of carbon content and symmetric/asymmetric device configuration on supercapacitor performance

Yuvaraja,

Sarathkumar,

Gowsalya

et al. 2024

New J. Chem.

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Synthesis of Cu doped Ba(OH)₂ thin film by SILAR method for supercapacitor electrode application

Sahu,

Pandey

2024

Phys. Scr.

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An economically suitable successive ionic layer adsorption and reaction (SILAR) method has been used to deposit 0.25, 0.50 and 0.75 wt. % copper doped barium hydroxide on stainless steel (SS) substrate. X-ray diffraction analysis shows the orthorhombic crystal structure of Cu doped Ba(OH)2 electrode. FTIR analysis reveals the chemical bonds present in the sample. The energy-dispersive X-ray spectroscopy (EDAX) and X-ray photo electron spectroscopy (XPS) measurements have been performed to confirm Cu doping into Ba(OH)2. The electrochemical properties of Cu doped Ba(OH)2 electrode have been analysed by cyclic voltammetry (CV) and galvanostatic charge-discharge (GCD) techniques. The 0.50 wt. % Cu doped barium hydroxide electrode exhibits a higher specific capacity (Csp) of 356.12 F g-1 (59.55 mF cm-2) at 1 mV s-1 scan rate in 1 M Na2SO4 electrolyte solution. This electrode also shows ~85 % capacitance retention up to 8000 cycles. This cyclic retention and capacitive behaviour of Cu-doped Ba(OH)2 shows its utility as an energy storage material in the near future.

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Oxygen vacancies of NiMoO₄ nanoneedles on Ni foam for high-performance asymmetric supercapacitors

Abstract: Although bimetallic oxide electrodes have excellent physical and chemical properties, as well as a high theoretical capacity, their current low energy density and poor cycling stability restrict their application in supercapacitors (SCs).

Cited by 3 publications

References 51 publications

A Wearable, Highly Sensitive Piezoresistive Pressure Sensor Based on MXene/NiMoO₄@CMF and Mimicking the Hedgehog Skin Spike Structure for Its Real-Time Monitoring of Human Movement

A Wearable, Highly Sensitive Piezoresistive Pressure Sensor Based on MXene/NiMoO₄@CMF and Mimicking the Hedgehog Skin Spike Structure for Its Real-Time Monitoring of Human Movement

In situ synthesis of NiCo₂O₄/carbon nanocomposites: effect of carbon content and symmetric/asymmetric device configuration on supercapacitor performance

Synthesis of Cu doped Ba(OH)₂ thin film by SILAR method for supercapacitor electrode application

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Oxygen vacancies of NiMoO4 nanoneedles on Ni foam for high-performance asymmetric supercapacitors

Abstract: Although bimetallic oxide electrodes have excellent physical and chemical properties, as well as a high theoretical capacity, their current low energy density and poor cycling stability restrict their application in supercapacitors (SCs).

Cited by 3 publications

References 51 publications

A Wearable, Highly Sensitive Piezoresistive Pressure Sensor Based on MXene/NiMoO4@CMF and Mimicking the Hedgehog Skin Spike Structure for Its Real-Time Monitoring of Human Movement

A Wearable, Highly Sensitive Piezoresistive Pressure Sensor Based on MXene/NiMoO4@CMF and Mimicking the Hedgehog Skin Spike Structure for Its Real-Time Monitoring of Human Movement

In situ synthesis of NiCo2O4/carbon nanocomposites: effect of carbon content and symmetric/asymmetric device configuration on supercapacitor performance

Synthesis of Cu doped Ba(OH)2 thin film by SILAR method for supercapacitor electrode application

Contact Info

Product

Resources

About

Oxygen vacancies of NiMoO₄ nanoneedles on Ni foam for high-performance asymmetric supercapacitors

A Wearable, Highly Sensitive Piezoresistive Pressure Sensor Based on MXene/NiMoO₄@CMF and Mimicking the Hedgehog Skin Spike Structure for Its Real-Time Monitoring of Human Movement

A Wearable, Highly Sensitive Piezoresistive Pressure Sensor Based on MXene/NiMoO₄@CMF and Mimicking the Hedgehog Skin Spike Structure for Its Real-Time Monitoring of Human Movement

In situ synthesis of NiCo₂O₄/carbon nanocomposites: effect of carbon content and symmetric/asymmetric device configuration on supercapacitor performance

Synthesis of Cu doped Ba(OH)₂ thin film by SILAR method for supercapacitor electrode application