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Schottky barrier diodes are specialized semiconductor devices characterized by their unique construction. This construction involves combining a metal layer with a moderately doped n-type semiconductor material. This combination leads to the formation of a Schottky barrier, a pivotal element that defines the diode's operational characteristics. The core functionality of Schottky barrier diodes is their capacity to allow current to flow in only one direction due to their distinctive...
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Dual-Functional Interfacial Layer Enabled by Gating-Shielding Effects for Ultra-Stable Zn Anode.

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Trace D-pantothenate calcium additives enable highly reversible aqueous zinc metal batteries (ZMBs) by creating a dual-functional interface, preventing dendrites and side reactions for stable energy storage.

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Zn metal batteriesbioinspired gating effectdynamical electrostatic shieldingelectrolyte additiveultra‐long cycling life

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Area of Science:

  • Electrochemistry
  • Materials Science
  • Energy Storage

Background:

  • Aqueous zinc metal batteries (ZMBs) offer low cost, high safety, and environmental compatibility.
  • Zn dendrite formation and interfacial side reactions limit the large-scale application of ZMBs.

Purpose of the Study:

  • To develop a method for enhancing the reversibility and stability of aqueous ZMBs.
  • To engineer a dual-functional interfacial layer using D-pantothenate calcium additives.

Main Methods:

  • Addition of trace D-pantothenate calcium to the electrolyte.
  • Investigating the bioinspired gating effect and dynamic electrostatic shielding mechanism.
  • Characterizing the interfacial layer and evaluating battery performance.

Main Results:

  • A dual-functional interfacial layer was successfully engineered.
  • The additive effectively excluded free water and guided Zn2+ transport.
  • Ultra-stable symmetric cells demonstrated over 9000 hours of cycling life.
  • Average Coulombic efficiency reached 99.8%.

Conclusions:

  • D-pantothenate calcium additives significantly improve Zn anode stability in aqueous ZMBs.
  • The engineered interface suppresses dendrite growth and side reactions.
  • This approach offers a promising pathway for developing practical ZMBs.