March 2023
Intermediate
240 pages
7h 3m
Japanese
Content preview from 図解まるわかり 電池のしくみ
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.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.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.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.
38
電池の基本構造としくみとは？
電極、電解質、集電体、ショートサーキット
2-1
電子の受け渡しを担う物質
ボルタ電池の誕生以降、改良を重ねることで進化し、現在さまざまな種
類の化学電池が実用化されています。その基本的な構造は、一次電池・二
次電池にかかわらず、電極と電解質から構成されています（図2-1）。
電極には負極と正極の2 つの電極があり、基本的には電極物質には電気
を通し、イオン化傾向が異なる2 種類の金属や金属酸化物が使われていま
す（図2-2）。近年開発された電池では、電極に同じ金属を使ったり、金
属ではない導電体を使ったりしている場合もあります。
負極では負極自身、またはそれ以外の物質から電子を外部回路に供給し
ます（酸化）。この物質のことを負極活物質といいます。正極では正極自
身、またはそれ以外の物質が電子を受け取り（酸化）、これを正極活物質
といいます（図2-3）。つまり電極物質が必ずしも電池反応に関係すると
は限りません。電池によっては、電池反応には関係せずに、反応によって
得られた電子を集めるためだけの集電体が使われています。この集電体に
は、電子をよく導く物質が使われています。
ほとんどの化学電池で使われる重要な媒介
電解質とは、電気を通す液体または固体のことです。ほとんどの化学電
池で液体（電解液・電解質溶液）が使われていますが、近年では二次電池
の全固体電池など、固体の電解質を使った電池も登場しています（4-
16）。
電解質の役割は、電池の酸化還元反応に必要なイオンを、負極と正極の ...
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
and much more.
Read now
Unlock full access
More than 5,000 organizations count on O’Reilly
O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
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.