---
title: "Toyota Won’t Share Solid-State Batteries With Tech Partner Mazda"
description: "Toyota calls its new battery tech a \"game changer.\""
date: "2017-10-27"
modified: "2017-10-27"
authors:
  - name: "Stephen Edelstein"
    job_title: "Weekend Editor"
    link: "https://www.thedrive.com/authors/stephen-edelstein"
url: "https://www.thedrive.com/tech/15514/toyota-wont-share-solid-state-batteries-with-tech-partner-mazda"
categories:
  - "Car Tech"
  - "News"
  - "News by Brand"
  - "Toyota News"
tags:
  - "Electric Cars"
  - "EV Batteries"
  - "Tech"
  - "Toyota"
---

# Toyota Won’t Share Solid-State Batteries With Tech Partner Mazda

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Toyota's new solid-state batteries will not be shared with Mazda under a [technical partnership between the two automakers](<https://www.thedrive.com/tech/14703/mazda-and-toyota-are-doubling-down-on-their-electric-car-partnership>) to develop electric cars, reports [*Automotive News Europe*](<https://europe.autonews.com/article/20171026/ANE/171029813/toyota-keeps-game-changing-ev-battery-tech-inhouse>). The partnership, which also includes supplier Denso, will instead focus on developing a platform to underpin electric cars from both automakers.

"We are cooperating with Mazda on a dedicated EV architecture, but we are keeping in-house the research on solid-state batteries," Kiyotaka Ise, Toyota's chief safety technology officer," said at this week's Tokyo Motor Show. Ise did not say when the first cars from the Toyota-Mazda partnership will appear, but did say the jointly-developed electric car platform will be able to accommodate both solid-state batteries and conventional lithium-ion batteries.

Solid-state batteries replace the liquid electrolytes with a solid material. Among other benefits, that's supposed to increase energy density, allowing the batteries to store more electricity in a given volume. In a separate interview in Tokyo, Toyota executive vice president [Didier Leroy called the technology](<https://www.thedrive.com/tech/15435/despite-electric-car-developments-toyota-sticking-with-hydrogen-fuel-cells>) a "game changer."

The first Toyota electric cars aren't expected to appear until sometime in the next decade. In the meantime, Toyota will continue to concentrate on hydrogen fuel-cell cars and hybrids, which the automaker has always preferred over battery-electric cars.

Even without Toyota's solid-state batteries, Mazda will likely benefit from the partnership. As a much smaller automaker, Mazda lacks the resources to undertake massive R&D projects like, say, the development of an all-new electric car platform. But it will probably need electric cars to meet stricter emissions standards. Countries like [Germany](<https://www.thedrive.com/article/13505/germany-continues-transition-to-electric-cars-with-diesel-ban-in-the-future>) and [France](<https://www.thedrive.com/news/12183/france-plans-to-ban-all-gas-diesel-cars-by-2040>) are considering outright bans on sales of new gasoline and diesel cars, and Mazda needs to prepare for that future.

## Author
Stephen has always been passionate about cars, and managed to turn that passion into a career as a freelance automotive journalist. When he's not handling weekend coverage for The Drive, you can find him looking for a new book to read.

### Author social links  
[Twitter](<https://twitter.com/SAEdelstein>)