---
title: "Hanyang University Researchers Identify 2.5 Nanometers as the Minimum Effective Coating Thickness for Longer-Lasting Solid-State EV Batteries"
type: "News"
locale: "en"
url: "https://longbridge.com/en/news/286568375.md"
description: "Researchers at Hanyang University have determined that a minimum effective coating thickness of 2.5 nanometers is necessary for protective layers in sulfide-based all-solid-state batteries (ASSBs) to suppress side reactions. This finding, published in Energy Storage Materials, provides a guideline for optimizing the cathode-electrolyte interface, potentially leading to longer-lasting batteries for electric vehicles. The study highlights the importance of precise thickness control in enhancing battery performance and cycle life."
datetime: "2026-05-15T12:32:25.000Z"
locales:
  - [zh-CN](https://longbridge.com/zh-CN/news/286568375.md)
  - [en](https://longbridge.com/en/news/286568375.md)
  - [zh-HK](https://longbridge.com/zh-HK/news/286568375.md)
---

# Hanyang University Researchers Identify 2.5 Nanometers as the Minimum Effective Coating Thickness for Longer-Lasting Solid-State EV Batteries

In Gyeonggi-do, South Korea on May 15, 2026, an innovative technology known as sulfide-based all-solid-state batteries (ASSBs) is gaining attention. These batteries utilize a solid electrolyte instead of a liquid one, presenting a solution to the safety and energy-density issues typically associated with traditional lithium-ion batteries. This advancement in battery technology showcases potential benefits, with significant improvements in safety and energy capacity.

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