Ultralight Ppy@Pva/Bc/Mxene Composite Aerogels for High-Performance Supercapacitor Electrodes and Pressure Sensors

Zheng, Wenfeng; Yang, Yuan; Fan, Lingling; Ye, Dezhan; Xu, Weilin; Xu, Jie

doi:10.2139/ssrn.4349398

Cited by 3 publications

(4 citation statements)

References 47 publications

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“…In Figure 4e, the B-PGCa-based pressure sensor is compared with reported aerogel-based pressure sensors, which have higher sensitivity and ultrahigh response speeds. [41][42][43][44][45][46][47][48] Moreover, B-PGCa retained a similar shape of ΔR/R 0 curves after three periods of stability testing within 90 days, each with 1 000 cycles at 50% strain (Figure 4f,g), indicating ultra-high stability and excellent durability of B-PGCa. These advantages make B-PGCa an ideal alternative for high-sensitivity pressure sensors that can accurately measure pressure changes in various fields, such as respiratory or pulse monitoring and human motion detection.…”

Section: Resultsmentioning

confidence: 73%

Tough Hydro‐Aerogels with Cation Specificity Enabled Ultra‐High Stability for Multifunctional Sensing and Quasi‐Solid‐State Electrolyte Applications

Zhou,

Wei,

Liu

et al. 2024

Advanced Materials

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The anion‐specific effects of the salting‐in and salting‐out phenomena have been extensively observed in hydrogels, whereas the cation specificity of hydrogels has rarely been reported. Herein, a multi‐step strategy including borax pre‐gelation, saline soaking, freeze‐drying, and rehydrating is developed to fabricate polyvinyl alcohol gels with cation specificity, exhibiting the specific ordering of effects on the mechanical properties of gels as Ca2+ > Li+ > Mg2+ >> Fe3+ > Cu2+ ≈ Co2+ ≈ Ni2+ ≈ Zn2+. The multiple effects of the fabrication strategy, including the electrostatic repulsion among cations, skeleton support function of graphene oxide nanosheets, and water absorption and retention of ions, endow the gels with the dual characteristics of hydrogels and aerogels (i.e., hydro‐aerogels). The hydro‐aerogels prepared with the cationic salting‐out effect display attractive pressure sensing performance with excellent stability over 90 days and enable continuous monitoring of ambient humidity in real time and effective work in seawater to detect various parameters (e.g., depth, salinity, and temperature). The hydro‐aerogels prepared using the cationic salting‐in effect can serve as quasi‐solid‐state electrolytes in supercapacitors, with 99.59% capacitance retention after 10,000 cycles. This study realizes cation specificity in hydrogels and designs multifunctional hydro‐aerogels for promising applications in various fields.This article is protected by copyright. All rights reserved

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Section: Resultsmentioning

confidence: 73%

Tough Hydro‐Aerogels with Cation Specificity Enabled Ultra‐High Stability for Multifunctional Sensing and Quasi‐Solid‐State Electrolyte Applications

Zhou,

Wei,

Liu

et al. 2024

Advanced Materials

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“…Zheng et al prepared polyvinyl alcohol (PVA)/bacterial cellulose (BC)/MXene (PBM) composite aerogel by directional freezing method. [107] The arranged porous structure of PBM not only enables PPy to be evenly loaded and highly accessible through the aerogel network, but also ensures the effective penetration and rapid transmission of electrolyte. PPy@PBM as a pressure sensor, aerogel shows high sensitivity.…”

Section: Aerogel Materialsmentioning

confidence: 99%

“…At the same time, the three-dimensional conductive structure can withstand significant deformation, greatly improving the pressure range of the sensor. [104][105][106][107][108][109][110][111][112][113][114][115] It can be seen from the preparation of MXene-based sensors for aerogels introduced earlier that three-dimensional porous materials with high porosity and large specific surface area are usually used. MXene serves as a conductive sensitive material in the preparation of sensors.…”

Section: Three-dimensional Structure Of Aerogelmentioning

confidence: 99%

Recent Advances in Flexible Pressure Sensors Based on MXene Materials

Qin,

Nong,

Wang

et al. 2024

Advanced Materials

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In the past decade, with the rapid development of wearable electronics, medical health monitoring, internet of things and flexible intelligent robots, flexible pressure sensors have received unprecedented attention. As a very important kind of electronic components for information transmission and collection, flexible pressure sensor has gained a wide application prospect in the fields of aerospace, biomedical and health monitoring, electronic skin and human‐machine interface. In recent years, MXene has attracted extensive attention because of its unique two‐dimensional layered structure, high conductivity, rich surface terminal groups and hydrophilicity, which has brought a new breakthrough for flexible sensing. Thus, it has become a revolutionary pressure sensitive material with great potential. In this work, the recent advances of MXene‐based flexible pressure sensors is reviewed from the aspects of sensing type, sensing mechanism, material selection, structural design, preparation strategy and sensing application. The methods and strategies to improve the performance of MXene‐based flexible pressure sensors are analyzed in details. Finally, the opportunities and challenges faced by MXene‐based flexible pressure sensors are discussed. This review will bring the research and development of MXene‐based flexible sensors to a new high level, promoting the wider research exploitation and practical application of MXene materials in flexible pressure sensors.This article is protected by copyright. All rights reserved

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“…However, EMI polymer films have a limited range of applications, single-use conditions, and poor bio-friendliness, which need attention. 18,[21][22][23][24] Therefore, hydrogels with excellent flexibility and high moisture content are one of the best candidates for next generation EMI materials.…”

Section: Introductionmentioning

confidence: 99%

A tough, anticorrosive hydrogel consisting of bio-friendly resources for conductive and electromagnetic shielding materials

Pei

et al. 2023

New J. Chem.

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Ultralight Ppy@Pva/Bc/Mxene Composite Aerogels for High-Performance Supercapacitor Electrodes and Pressure Sensors

Cited by 3 publications

References 47 publications

Tough Hydro‐Aerogels with Cation Specificity Enabled Ultra‐High Stability for Multifunctional Sensing and Quasi‐Solid‐State Electrolyte Applications

Tough Hydro‐Aerogels with Cation Specificity Enabled Ultra‐High Stability for Multifunctional Sensing and Quasi‐Solid‐State Electrolyte Applications

Recent Advances in Flexible Pressure Sensors Based on MXene Materials

A tough, anticorrosive hydrogel consisting of bio-friendly resources for conductive and electromagnetic shielding materials

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