雪櫃、冷氣機、水煲等等各電器不時都會散發出熱力。713Please respect copyright.ＰＥＮＡＮＡ7wMGeiMeq2
如果將這些多餘的熱力轉化成為電力，便能夠更有效運用資源，不作浪費。713Please respect copyright.ＰＥＮＡＮＡMxkVtrprFJ
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（圖2）繼續深入講解之前，我們先以非常簡單的方法概括一下發電的原理。713Please respect copyright.ＰＥＮＡＮＡ6YbTPtrQLg
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只要電子在閉合電路單方向流動，就能促成電流，提供電力讓燈泡發光。713Please respect copyright.ＰＥＮＡＮＡXg3lt9rCbg
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（圖3）要把熱力有效轉化為電力，我們需要一樣能夠有效傳遞電子而同時又不會傳遞熱力的物料。713Please respect copyright.ＰＥＮＡＮＡVty8rx6bLT
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有科學家最近發表文章（Ref1)，利用化學物ferricyanide ion Fe(CN)6 –4作為媒體把熱力轉化為電力。713Please respect copyright.ＰＥＮＡＮＡ2BRqPHvbPj
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選用Fe(CN)6 –4的原因基於其兩種特質。713Please respect copyright.ＰＥＮＡＮＡb5xENOOMfy
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1.它遇冷（約攝氏20度左右）的時候，再加上Guanidinium ion的輔助下便會變成固體結晶。713Please respect copyright.ＰＥＮＡＮＡOujkYwIWXO
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2.它遇熱的時候會放出電子並成為Fe(CN)6 –3。713Please respect copyright.ＰＥＮＡＮＡyCkYlmA70i
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（圖4）以下就是利用熱力發電的精髓要點。713Please respect copyright.ＰＥＮＡＮＡoBoQtuUSe3
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1.Fe(CN)6 –4遇上外間熱力（例如電器所散發出的熱力），因而會釋發電子並成為Fe(CN)6 –3。713Please respect copyright.ＰＥＮＡＮＡIYxTQTrNP3
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2.電子在閉合電路走動，產生電流，讓燈泡發亮。713Please respect copyright.ＰＥＮＡＮＡWjqe4R49ut
713Please respect copyright.ＰＥＮＡＮＡB99aEVylxU
3.電子到達另一端的凍金屬棒（約攝氏20度）後，從第1點所得來的Fe(CN)6 –3便會接收電子，變回Fe(CN)6 –4。713Please respect copyright.ＰＥＮＡＮＡU34CYtkcIs
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4.Fe(CN)6 –4在Guanidinium ion的輔助下變成固體結晶。713Please respect copyright.ＰＥＮＡＮＡ2B2qyhSIrr
固體相對上傳熱的能力比液體較弱，因而減低了熱金屬棒把熱力傳到凍金屬棒的效率，促使凍金屬棒及熱金屬棒維持著溫差。713Please respect copyright.ＰＥＮＡＮＡ4NCCO4dQEi
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5.在地心吸力的影響下，固體結晶會趨往金屬棒那方。而在熱力的影響下，固體結晶變回液態Fe(CN)6 –4，重回第1點不斷循環。713Please respect copyright.ＰＥＮＡＮＡUly83JHMYa
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綜合來說，科學家巧妙利用了Fe(CN)6 –4遇熱釋出電子的特點，以及遇冷配合Guanidinium結成固體、固體不易傳熱的特質，建造了有效傳遞電子而同時又不會有效傳遞熱力的物料。713Please respect copyright.ＰＥＮＡＮＡIgnbEHjYiZ
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（圖5）科學家在文中亦嘗試利用20個圖4的模組，在兩極維持50度的溫差下，提供電力予各用途之上。713Please respect copyright.ＰＥＮＡＮＡWSHOQV3JVR
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現在需要解決的問題，就是找出收集多餘熱力的有效方法及物料，引導熱力到模組裡頭。713Please respect copyright.ＰＥＮＡＮＡ5TUBPRFIOw
文章作者表示現時已積極尋找物料，相信假以時日絕有可能會在市面見到收集電器熱力發電的設備。713Please respect copyright.ＰＥＮＡＮＡxJBMSjX8N8
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如果想我快啲出文的話，請入去Penana網站科普專欄–薯不揀單俾一個like以及Bookmark，這對我非常之重要。713Please respect copyright.ＰＥＮＡＮＡLlhLpwb0Ay
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Link: https://www.penana.com/story/66244/%E7%A7%91%E6%99%AE%E5%B0%88%E6%AC%84-%E8%96%AF%E4%B8%8D%E6%8F%80%E5%96%AE/toc713Please respect copyright.ＰＥＮＡＮＡfCcdKcxvoE
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同時亦可以在Penana網站裡按「買一嚿/半嚿薯仔」，以課金的方式推動我繼續搜羅資料寫文，多謝。713Please respect copyright.ＰＥＮＡＮＡEBei48wp3v
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https://www.penana.com/user/27349/%E8%96%AF%E4%BB%94%E8%81%9E%E8%8C%B1%E8%8E%89/portfolio713Please respect copyright.ＰＥＮＡＮＡy1NjAEvhPA
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有興趣接收科學資訊的話，歡迎follow IG: potatopigtongue。713Please respect copyright.ＰＥＮＡＮＡigJIdkwHfq
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Ref1:https://science.sciencemag.org/content/early/2020/09/09/science.abd6749713Please respect copyright.ＰＥＮＡＮＡ8YGhOsLE5j
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