March 2023
Intermediate
240 pages
7h 3m
Japanese
Content preview from 図解まるわかり 電池のしくみ
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14
電池が世界を支えている
リチウムイオン電池、乾電池
1-1
電池の巨大需要が始まっている
世界中で電池の生産が活発になっています。日本や欧米、中国などで電
池工場の生産強化や新工場の建設が相次ぎ、官民そろって電池産業への先
行投資が本格化しています（図 1-1）。同時に電池の原材料であるレアメ
タルなどの金属の争奪戦も始まっています。
この世界中が血眼になって作っている電池とは、電気自動車に搭載する
蓄電池と呼ばれているリチウムイオン電池です。実はスマートフォンの電
池と同じ種類のもので、2019 年にはノーベル賞に輝きました。
生活は電池であふれている！？
何かと話題の電気自動車や、すっかり生活必需品となったスマートフォ
ン以外にも、電池は私たちの生活には欠かせない存在です。ノートPCや
デジカメなどには充電して何度も使える電池、テレビやエアコンのリモコ
ン、おもちゃや懐中電灯などには、一度使い切ったら使えなくなる電池が
入っていることが多いでしょう（図1-2）。
災害時や緊急事態が発生した場合に、電池は大活躍してくれます。非常
灯、誘導灯や火災報知器などの中で、24 時間休むことなく安全を見守っ
てくれているのです。さらに病院や工場などでは非常用電源として、停電
したときに活躍してくれる特殊な電池があります。また住宅やビルなどの
屋根に設置されているソーラーパネルも、電気代を節約できて節電になる
と広告されているエネファームも電池です。
一番有名な電池とは？
電池の種類は非常に多く、用途も多岐にわたっています。その中でも多 ...
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I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.