Self-adaptive energy storage through electrolyte-electrode synergy in dynamic environments.

Area of Science:

• Materials Science
• Electrochemistry
• Energy Storage

Background:

• High interface resistance limits electrochemical energy storage device performance.
• Optimizing interface resistance is crucial for enhancing efficiency and stability.
• Next-generation energy storage requires high energy and power density.

Purpose of the Study:

• To reduce interface resistance and accelerate proton-coupled electron transfer.
• To enhance rechargeable supercapacitor performance using a hydrogen bond network.
• To create energy storage systems adaptable to environmental changes.

Main Methods:

• Constructed a continuous hydrogen bond network between electrodes and electrolytes.
• Utilized PMo10V2-gel and polypyrrole-lignosulfonate (PPy-LS) interpenetrating networks.
• Investigated hydrogen bonding interactions to strengthen interfacial contact and ensure low resistance.

Main Results:

• Achieved low resistance in the PPL-SC (PMo10V2-PPy-LS rechargeable supercapacitor).
• Enhanced proton-coupled electron transfer.
• Demonstrated stable operation with an energy density of 111.4 ± 3.4 μWh cm⁻² across wide temperature (-20 to 60 °C) and humidity ranges.

Conclusions:

• The developed rechargeable supercapacitor exhibits excellent adaptability to environmental fluctuations.
• Performance is sensitive to ambient conditions, allowing modulation of storage efficiency.
• Proposes an innovative strategy for environmentally adaptive electrochemical energy storage devices.