雪櫃、冷氣機、水煲等等各電器不時都會散發出熱力。691Please respect copyright.ＰＥＮＡＮＡAIEG9SmqBX
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。691Please respect copyright.ＰＥＮＡＮＡokDVuvImwC
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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。691Please respect copyright.ＰＥＮＡＮＡPY0bYDBDme
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691Please respect copyright.ＰＥＮＡＮＡ8MWRCXIqX8
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。691Please respect copyright.ＰＥＮＡＮＡlHO1iZsP0j
691Please respect copyright.ＰＥＮＡＮＡqeHG8aYyIy
（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。691Please respect copyright.ＰＥＮＡＮＡDAkASPKXH5
691Please respect copyright.ＰＥＮＡＮＡl4Ac5SgZ4I
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。691Please respect copyright.ＰＥＮＡＮＡz68T0mTpdH
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選用Fe(CN)6 –4的原因基於其兩種特質。691Please respect copyright.ＰＥＮＡＮＡMLkhqd4GXA
691Please respect copyright.ＰＥＮＡＮＡMscI31iTVS
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。691Please respect copyright.ＰＥＮＡＮＡetQ5DIzenJ
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2.它遇熱的時候會放出電子並成為Fe(CN)6 –3。691Please respect copyright.ＰＥＮＡＮＡ0uTNNZiYhW
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（圖4）以下就是利用熱力發電的精髓要點。691Please respect copyright.ＰＥＮＡＮＡXukGudH5rT
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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。691Please respect copyright.ＰＥＮＡＮＡa3Q0DEIHpu
691Please respect copyright.ＰＥＮＡＮＡoAj0zFPWKJ
2.電子在閉合電路走動，產生電流，讓燈泡發亮。691Please respect copyright.ＰＥＮＡＮＡmp4wNrwQpM
691Please respect copyright.ＰＥＮＡＮＡZ8tJ5FJ1p1
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。691Please respect copyright.ＰＥＮＡＮＡKNTL7Vohbn
691Please respect copyright.ＰＥＮＡＮＡGIF0wQy4hw
4.Fe(CN)6 –4在Guanidinium ion的輔助下變成固體結晶。691Please respect copyright.ＰＥＮＡＮＡ9TuTp674wo
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。691Please respect copyright.ＰＥＮＡＮＡHrL9oodNdL
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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。691Please respect copyright.ＰＥＮＡＮＡ4i2YIXOpKP
691Please respect copyright.ＰＥＮＡＮＡ3NiAdyWV9D
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。691Please respect copyright.ＰＥＮＡＮＡAr1DFUhZW6
691Please respect copyright.ＰＥＮＡＮＡRA98ZU8sUx
（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。691Please respect copyright.ＰＥＮＡＮＡDJmXQ9yk5N
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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。691Please respect copyright.ＰＥＮＡＮＡb0GKui3c5j
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。691Please respect copyright.ＰＥＮＡＮＡDY7KlPPrsu
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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。691Please respect copyright.ＰＥＮＡＮＡBFneQmWj8J
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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/toc691Please respect copyright.ＰＥＮＡＮＡ0xE8Toq5e5
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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。691Please respect copyright.ＰＥＮＡＮＡVoZ7DSUWLj
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Link:691Please respect copyright.ＰＥＮＡＮＡjK4W5njJue
https://www.penana.com/user/27349/%E8%96%AF%E4%BB%94%E8%81%9E%E8%8C%B1%E8%8E%89/portfolio691Please respect copyright.ＰＥＮＡＮＡQetyR3X9nO
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有興趣接收科學資訊的話，歡迎follow IG: potatopigtongue。691Please respect copyright.ＰＥＮＡＮＡRG9YsibQC7
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Ref1:https://science.sciencemag.org/content/early/2020/09/09/science.abd6749691Please respect copyright.ＰＥＮＡＮＡByDIoZ8M7a
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