Intrinsic Self-Healing Chemistry for Next-Generation Flexible Energy Storage Devices

Wan, Xin; Mu, Tiansheng; Yin, Geping

doi:10.1007/s40820-023-01075-9

Cited by 36 publications

(10 citation statements)

References 179 publications

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“…The decreased R s value can be attributed to the fact that the added artificial sweat increased the concentration of NaCl, resulting in an increase of the ionic conductivity of the electrolyte. This application demonstrates the feasibility of self-healing supercapacitors for developing wearable electronics suitable for daily use. − …”

Section: Resultsmentioning

confidence: 99%

Environmentally Friendly and Self-Healable Supercapacitors Realized by a NaCl-Penetrable Polyampholyte Conductive Hydrogel

Zhang,

Jiang,

et al. 2024

ACS Appl. Energy Mater.

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Environmentally friendly and self-healable supercapacitors (EFSH-supercapacitors) hold promise to support high safety and extend the lifetime when undergoing mechanical loads and, therefore, share great application in flexible wearable electronics. Here, we develop this kind of a supercapacitor through using a polyampholyte (PA) hydrogel that possesses the capability of salt permeation and self-healing. The ionic conductivity of the PA hydrogel is largely enhanced (up to 13.2 mS cm −1 ) by both bonding and adsorbing NaCl salt. The balanced electrical and mechanical performance of NaCl infiltrated PA hydrogel facilitates strong electrode−electrolyte interfacial linkage and low charge transfer resistance, which enables the EFSH-supercapacitor to have stateof-the-art electrochemical properties. We show that supercapacitor after structural failure as PA hydrogel electrolyte is cut into two pieces, for which stored energy was previously completely damped, can now be rapidly (8 min) and repeatedly repaired (∼54% after four times self-healing). We also prove that the damage of the whole supercapacitor including both electrodes and electrolyte can also be successfully repaired. The electrolyte-dried supercapacitor recovers to efficient work by adding synthetic sweat, demonstrating its practical application in wearable electronics.

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Section: Resultsmentioning

confidence: 99%

Environmentally Friendly and Self-Healable Supercapacitors Realized by a NaCl-Penetrable Polyampholyte Conductive Hydrogel

Zhang,

Jiang,

et al. 2024

ACS Appl. Energy Mater.

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“…Considering these challenges, intrinsic self-healing polymeric materials have become a research hotspot due to their significantly improved service lives and safety in practical applications, capable of automatically restoring their original performance after being damaged by external factors. 18,19 Previous studies have confirmed that introducing self-healing systems into EMI shielding materials could effectively address the decreased electromagnetic shielding performance caused by mechanical damages. For instance, Sim et al 20 demonstrated that the EMI SE of a damaged graphene oxide/silver nanowire film decreased from 72 dB to 56 dB but was restored to 71 dB after healing treatment.…”

Section: Introductionmentioning

confidence: 98%

Structural design underpinning self-healing materials for electromagnetic interference shielding: coupling of dynamic polymer chemistry and electrical conductivity

Meng,

Liu,

Jia

et al. 2024

J. Mater. Chem. A

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“…Furthermore, high fossil fuel consumption leads to environmental pollution and harms human beings. 2 Notably, electricity is an economical and practical clean energy source; hence, there has been a recent surge in demand for electrochemical energy storage systems. 3 Additionally, supercapacitors have attracted increasing attention due to their superior power density, rapid charge and discharge rates, and extensive lifespan.…”

Section: Introductionmentioning

confidence: 99%

“…Globally, contemporary energy supply is excessively dependent on the rapid consumption of nonrenewable fossil fuels, including coal, natural gas, and petroleum, resulting in their swift depletion. Furthermore, high fossil fuel consumption leads to environmental pollution and harms human beings . Notably, electricity is an economical and practical clean energy source; hence, there has been a recent surge in demand for electrochemical energy storage systems .…”

Section: Introductionmentioning

confidence: 99%

Binder-Free Defective Bimetallic Metal-Organic Framework Nanostructures with Lattice Distortion as Hybrid Supercapacitor Electrodes

Lin,

Guo,

Cai

et al. 2024

ACS Appl. Nano Mater.

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Owing to their adaptable topologies and simplicity of functionalization, metal−organic frameworks (MOFs) are highly soughtafter materials for battery-type electrodes. To improve the MOFs' overall conductivity and instability, a Ni/Co-MOF nanostructure grows in situ on nickel foam (NF) with the controlled introduction of structural defects using a one-step solvothermal method. Benzoic acid (BA) is selected as the cost-effective regulator and ligand to compete with the original ligand terephthalic acid (TPA), for inducing lattice distortion. The incorporation of BA results in increased micropore volume and surface area. These characteristics improve the contact between the electrode and electrolyte, leading to a rapid redox reaction. Thus, the defective sample Ni/Co-MOF/NF with 10% BA exhibits an ultrahigh capacity of 352.3 mAh g −1 at a current density of 1 A g −1 . Moreover, the assembled hybrid supercapacitor device (10% Ni/Co-MOF/NF//AC) demonstrates a suitable energy density of 33.5 Wh kg −1 at a power density of 404.6 W kg −1 and 90.3% capacitance retention after 8000 cycles. These findings provide valuable insights for developing ultrahigh-performance MOF nanostructures that can be directly used as supercapacitor electrodes.

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Intrinsic Self-Healing Chemistry for Next-Generation Flexible Energy Storage Devices

Cited by 36 publications

References 179 publications

Environmentally Friendly and Self-Healable Supercapacitors Realized by a NaCl-Penetrable Polyampholyte Conductive Hydrogel

Environmentally Friendly and Self-Healable Supercapacitors Realized by a NaCl-Penetrable Polyampholyte Conductive Hydrogel

Structural design underpinning self-healing materials for electromagnetic interference shielding: coupling of dynamic polymer chemistry and electrical conductivity

Binder-Free Defective Bimetallic Metal-Organic Framework Nanostructures with Lattice Distortion as Hybrid Supercapacitor Electrodes

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