軽い蓄電池　Lightweight batteries

私が中学生だった時、約60年前ですが、当時の理科の先生が言われていた言葉を今でもはっきりと覚えています。
“重い鉛電池に比較してずっと軽い蓄電池ができたら大発明だ。”
そして、今、それが21世紀の重要な技術の一つとして現実となりました。
明日、11月2日（土）の夜の尾道無料英会話道場では今年のノーベル化学賞のリチウムイオン電池の開発、その数多くの応用例、環境への貢献などの話題を私の司会で取り上げます。
I still clearly remember what our science teacher told us in my junior high school days, which was about 60 years ago.
“It is a very big invention if someone makes a lightweight battery compared to a heavy zinc battery.”
And now it has been realized as one of the key enabling technologies of 21st century.
Development story of the lithium battery, Nobel Prize awarded technology in 2019, is discussed with its applications in many fields and its great contribution to the environment at the evening course of Onomichi Free English learning session on November 2nd (Saturday), which is emceed by me.