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Updated: Jul 12, 2026
12:02
Determination of Thermodynamic Properties of Alkaline Earth-liquid Metal Alloys Using the Electromotive Force Technique
Published on: November 3, 2017
Engineering an Electrode-Electrolyte Interphase for Ultrastable Aqueous Aluminium-Air Battery
Kalpana Garg1, Sarbjit Kaur1, Kush Kumar2
1Department of Chemistry, Indian Institute of Technology Ropar, Rupnagar, Punjab, India.
Angewandte Chemie (International Ed. in English)
|July 10, 2026
Summary
Boric acid addition significantly enhances aluminum-air battery performance by reducing corrosion and suppressing hydrogen evolution. This innovation leads to a self-protective aluminum oxide layer, improving battery stability and longevity.
Area of Science:
- Electrochemistry
- Materials Science
- Energy Storage
Background:
- Aluminum-air batteries are promising next-generation energy storage devices.
- Practical application is limited by uncontrolled hydrogen evolution and anode degradation in alkaline electrolytes.
Purpose of the Study:
- To explore boric acid as a multifunctional additive to improve Al-air battery performance.
- To investigate the mechanisms by which boric acid enhances electrolyte-electrode interactions and anode stability.
Main Methods:
- Scanning electrochemical microscopy (SECM)
- In-situ electrochemical Raman spectroscopy
- X-ray photoelectron spectroscopy (XPS)
- Molecular dynamic simulations
Main Results:
- Boric acid acts as a pH buffer, hydrogen-bond regulator, and Al3+ solvation shell modulator.
- A boron-rich, self-protective aluminum oxide layer formed, inhibiting Al corrosion by 82.7%.
- Battery stability increased to 302 hours over 906 cycles, with suppressed hydrogen evolution reaction (HER).
Conclusions:
- Boric acid effectively mitigates Al corrosion and HER in alkaline electrolytes.
- The developed Al-air battery demonstrates practical applicability, powering LEDs for extended periods.
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