---
title: Cathodic Protection
description: "Cathodic Protection explained: how this electrochemical method stops corrosion by making metal the cathode. Essential for infrastructure."
---

[Glossary ](https://www.o2oh.com/glossary)

# [Cathodic Protection](https://www.o2oh.com/glossary/cathodic-protection)

 Written by [one to ONE Holdings](https://www.o2oh.com/glossary/author/one-to-one-holdings) | Nov 3, 2025 10:34:12 PM

Cathodic protection is an electrochemical** **method used to control the corrosion of a metal surface, in which the metal is made the cathode of an electrochemical cell.

Since corrosion is an oxidation reaction (a metal losing electrons), cathodic protection prevents it by suppressing the anodic reaction entirely. The process is primarily achieved through two methods: [sacrificial anode](https://www.o2oh.com/glossary/sacrificial-anode) systems and impressed current systems (ICCP). 

Cathodic protection is vital for the longevity of infrastructure exposed to electrolytes, such as seawater or soil.

[View full post](https://www.o2oh.com/glossary/cathodic-protection)

```json
{
  "@context" : "http://schema.org",
  "@type" : "BlogPosting",
  "author" : {
    "@type" : "Person",
    "name" : "one to ONE Holdings"
  },
  "dateModified" : "2026-02-06T05:47:09.070Z",
  "datePublished" : "2025-11-03T22:34:12Z",
  "headline" : "Cathodic Protection",
  "image" : {
    "@type" : "ImageObject",
    "height" : 70,
    "url" : "https://8005843.fs1.hubspotusercontent-na1.net/hubfs/8005843/o2Oh_18mm.jpg",
    "width" : 106
  },
  "mainEntityOfPage" : "https://www.o2oh.com/glossary/cathodic-protection",
  "publisher" : {
    "@type" : "Organization",
    "logo" : {
      "@type" : "ImageObject",
      "height" : 60,
      "url" : "/hs/hsstatic/content_shared_assets/static-1.4092/img/default-amp-logo.png",
      "width" : 60
    },
    "name" : "Glossary | one to ONE Holdings"
  }
}
```