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Related Experiment Video

Updated: Jul 12, 2026

Determination of Thermodynamic Properties of Alkaline Earth-liquid Metal Alloys Using the Electromotive Force Technique

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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.

Keywords:

aqueous Al–air battery boron modified aluminium oxide layer formation electrochromic effect local pH change scanning electrochemical microscopy

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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.