キヤノンオプトロン：全固体ＬＩＢ酸化物系電解質を開発（動画）：
Canon Optron: Oxide-based solid electrolyte for all-solid-state LIB:
佳能光电：开发全固态锂离子电池氧化物基固体电解质：
ー高伝導で低温焼結するスゴい物質の全容ー
キヤノンオプトロン
産業技術総合研究所共同研究で、全固体ＬＩＢ用の酸化物系固体電解質を開発した。
全固体ＬＩＢ用
酸化物系固体電解質
- 高い伝導性を有しながら、
- 従来の固体電解質より低い温度で焼結し、
- 抵抗物質の形成を抑制する。
２０２３年に量産販売：
本社工場内に酸化物固体電解質の生産ラインを設置する。
２０２３年前半に量産・販売する計画。
伝導性を大幅向上：
- 結晶性材料に、特定の異種元素を添加した。
- 電池出力に影響を及ぼす伝導性を、大幅に向上した。
酸化物系固体電解質を使用した全固体ＬＩＢは、高い安全性が期待されている。
従来は固体電解質に問題：
- 電池製造時に、１０００度Ｃ以上で焼結する必要があった。
- 高温で加熱すると、混合している活物質が化学反応する。
- それが、リチウムイオンの移動を阻害する抵抗物質となる。
十分な出力が得られない電池となる問題があった。
新型固体電解質が登場：
大気雰囲気下６００―７００度Ｃ程度で焼結する。
活物質との化学反応を抑制し、リチウムイオンの出力を向上できる。
ニュースイッチ
Canon Optron develops oxide-type solid electrolytes for all-solid-state lithium ion batteries Mass production to begin in 2023,
contributing to the accelerated development of practical applications for all-solid-state batteries
TOKYO, March 9, 2022—Canon Optron, Inc. (Headquarters: 1744-1, Kanakubo, Yuki City, Ibaraki Prefecture, Japan), in collaboration with the National Institute of Advanced Industrial Science and Technology (AIST),
has developed an oxide-type solid electrolyte that can be sintered at lower temperatures than conventional solid electrolytes.
In addition to high conductivity,
the electrolytes have stability in air and can be supplied to a wide range of customers for a variety of applications. Canon Optron will exhibit the new oxide-type solid electrolytesat the 13th International Rechargeable Battery Expo BATTERY JAPAN, to be held in Tokyo from March 16 to 18.
Lithium ion batteries (LIBs)
are used in mobile devices and automobiles.Recently, there has been increased attention focused on all-solid-state LIBs, in which the liquid electrolyte is replaced by a flame-retardant solid electrolyte.
Among all-solid-state LIBs, those that use oxide-type solid electrolytes with high chemical stability are considered highly safe.
However,
there are problems with conventional oxide-type solid electrolytes in terms of low lithium ion conductivity and the formation during battery manufacturing of a resistive material that reduces battery output.In response,
Canon Optron has developed an oxide solid electrolyte that has high conductivity but can be sintered at a lower temperature than conventional solid electrolytes, thus suppressing the formation of resistive materials.The company plans to set up a production line for oxide solid electrolytes in its main plant in Yuki City, Ibaraki Prefecture,
and start mass production and sales in the first half of 2023.
-more- Mar 9, 2022
Appearance of the developed oxide-type solid electrolyte Left: Granular type / Right: Pellet type 1
■Realization of high conductivity over 10-5 S/cm By adding specific heterogeneous elements to a crystalline material,
which had never been the focus of attention as a solid electrolyte,
Canon Optron has succeeded in significantly improving conductivity, a factor that affects battery output.
This research on solid electrolytes
has led to recognition of the value of such material, and a research paper on 1 the subject has been published in the journal RSC Advances .
https://optron.canon/ja/news/img/20220309_news_release_en.pdf