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url url url url
  2. Weltenzyklopädie
  3. پیل برق‌شیمیایی - ویکی‌پدیا، دانشنامهٔ آزاد
پیل برق‌شیمیایی - ویکی‌پدیا، دانشنامهٔ آزاد
از ویکی‌پدیا، دانشنامهٔ آزاد
نمایش یک پیل الکتروشیمیایی. دو نیم‌پیل با پل نمکی با هم ارتباط دارند.

پیل الکتروشیمیایی (به انگلیسی: Electrochemical cell) پیلی است که در آن در اثر واکنش شیمیایی، جریان الکتریکی تولید می‌شود یا واکنشی شیمیایی بوسیله انرژی الکتریکی انجام می‌شود. باتری‌های ۵/۱ ولت معمولی نمونه‌ای از یک پیل الکتروشیمیایی‌اند. (گرچه که به بیان درست‌تر یک پیل گالوانیکاند.)

پیل الکتروشیمیایی چهار بخش دارد:

آند: که در آن واکنش آندی رخ می‌دهد.

کاتد: که در ان واکنش کاتدی رخ می‌دهد. کاتد بخشی از سطح است که هدایت الکتریکی‌اش بالا باشد وقابلیت انجام واکنش آن بالا باشد. برای مثال در چدن خاکستری گرافیتهای سطح کاتداند.

الکترولیت: که برای رخ دادن واکنش بین آند و کاتد است و باید هدایت الکتریکی‌اش بالا باشد. الکترولیت می‌تواند محلول ۰۰۰۱/۰ نمک خوراکی یا محلول نمکین آب دریا باشد.

پل: که بین آند و کاتد اتصال الکتریکی برای جابجایی الکترون برقرار می‌کند.

در پیل الکتروشیمیایی بایستی سرعت زایش و گیرش الکترون برابر باشد.

جستارهای وابسته

منابع

آیکون خرد

این یک مقالهٔ خرد شیمی است. می‌توانید با گسترش آن به ویکی‌پدیا کمک کنید.

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