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Batteries and Fuel Cells

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Related Experiment Video

Updated: Jun 21, 2026

$In Situ Neutron Powder Diffraction Using Custom-made Lithium-ion Batteries$

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Published on: November 10, 2014

Enhancing Stability and Capacity in Planar Zn-Ion Micro-Batteries via 3D Porous Ni Anode Integration.

Yijia Zhu¹, Xiaopeng Liu¹, Nibagani Naresh¹

¹Institute for Materials Discovery, University College London, London, WC1E 7JE, UK.

|September 3, 2025

Summary

This study introduces a 3D porous nickel scaffold for zinc-ion micro-batteries, enhancing stability and capacity. This innovation advances stable, high-performance micro-batteries for smart devices.

Keywords:

3D porous nickel scaffold on‐chip energy storage planar micro‐batteries stable anodes zinc‐ion batteries

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Area of Science:

Materials Science
Electrochemistry
Energy Storage

Background:

Miniaturized system-on-chip devices require stable, high-capacity micro-batteries.
Challenges include complex fabrication, electrode degradation, and dendrite growth in conventional micro-batteries.
Existing planar micro-batteries face limitations in long-term cycling stability and performance.

Purpose of the Study:

To develop a more stable and high-performance planar micro-battery architecture.
To investigate the use of a 3D porous nickel scaffold for micro-anode stability.
To enhance the charge storage capacity and cycling durability of zinc-ion micro-batteries.

Main Methods:

Fabrication of planar micro-batteries using a polyaniline (PANI) cathode.
Integration of a zinc-loaded 3D porous nickel (Ni) scaffold as the anode.
Electrochemical characterization including cycling stability, charge transfer resistance, and charge storage capacity measurements.

Main Results:

The 3D porous Ni scaffold demonstrated improved micro-anode stability compared to planar zinc and 3D porous zinc scaffolds.
The designed micro-batteries exhibited enhanced long-term cycling stability and reduced charge transfer resistance.
Charge storage capacity increased to 14 µAh cm⁻² at 0.1 mA cm⁻², with peak areal energy and power densities of 17.22 µWh cm⁻² and 6.98 mW cm⁻².

Conclusions:

The 3D porous nickel scaffold offers an effective strategy for improving the electrochemical performance and durability of planar micro-batteries.
This approach addresses key challenges in micro-battery fabrication and electrode stability.
The findings represent a significant advancement for portable microelectronic devices and future energy storage solutions.