How Xiaomi’s Ultra‑Electrolysis Tech Sets a New Standard for Healthy Laundry

On March 26, the China Light Industry Federation held a technology achievement appraisal for Xiaomi’s "Ultra‑Electrolysis Washing Technology" project, where experts confirmed that the key technology developed by Xiaomi Smart Home (Wuhan) reaches an international leading level.

High‑Performance BDD Catalytic Coating – the "Diamond Electrode"

The core of the ultra‑electrolysis process is the generation of active oxygen via electrochemical reactions, whose efficiency depends on electrode material performance. The team investigated chemical vapor deposition (CVD) parameters—reaction temperature, gas‑phase ratios, deposition rate—and introduced a gradient‑doped boron‑doped diamond (BDD) coating. This coating provides:

High oxygen‑evolution potential: improves current efficiency and reduces energy consumption.

Wide potential window: stable operation across a broader voltage range, adapting to varied water qualities.

High current density: accelerates the electrolysis reaction, shortening each wash’s disinfection time.

These material breakthroughs form the foundation for integrating the ultra‑electrolysis module into the washing machine, ensuring consistent performance under different water conditions.

Over‑Current Dual‑BDD Coupled PEM Module – Solving Production‑Scale Challenges

Traditional electrolysis modules suffer from cathode scaling and limited ion‑transport efficiency. Xiaomi designed an over‑current dual‑BDD coupled with a proton‑exchange‑membrane (PEM) balanced architecture, achieving:

Long‑term stable anti‑degradation: the dual‑BDD electrode and PEM create a stable proton‑directional channel that suppresses scale buildup and maintains constant output across water qualities.

High‑safety, high‑precision electric control: a low‑bias drive system isolates abnormal conditions promptly, guaranteeing stable operation.

Increased active‑oxygen yield: a flow‑resistance‑enhanced mass‑transfer channel optimises adsorption‑desorption kinetics, raising active‑oxygen production by more than 15%.

This module breakthrough makes full‑machine deployment feasible, addressing efficiency and lifespan issues that previously hindered mass production.

Whole‑Machine Water‑Path and Program Control System

Building on the two prior innovations, Xiaomi created a modular water‑path that fits any front‑load drum, seamlessly integrating the electrolysis module with the machine’s plumbing. The design enables multi‑zone electrolysis water coverage, providing physical isolation combined with electrochemical disinfection for each wash compartment, thus meeting diverse user needs.

Verified Performance and Certifications

Independent module passed disinfection product tests, achieving a 99.99% kill rate for water, surfaces, and fabrics.

Cold‑water sterilisation leaves no residues and effectively prevents bio‑film formation, solving drum and pipe cleaning challenges.

Hard‑water cycling tests show 0% performance decay, ensuring long‑term stability.

Strong colour‑protection capability efficiently decomposes free dyes, eliminating colour‑transfer concerns in mixed‑load washes.

The solution is the only washing‑machine technology to meet the S‑level “Three‑Zone Health” certification, representing the industry’s first multi‑zone full‑coverage electrolysis system.

Overall, Xiaomi’s ultra‑electrolysis washing technology demonstrates how advanced electrode materials, balanced PEM architecture, and integrated control can transform a conventional appliance into a health‑focused, energy‑efficient solution.