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新發現助力加快“綠氫”步伐 光催化高效水電解制氫獲突破

2022-10-31 15:37:33來源:化工儀器網 閱讀量:13795

導讀:氫本身在工業領域就有廣闊的應用場景,也是一種清潔能源,作為儲能燃料需要解決的問題也相對較少,甚至在燃氫發動機這塊,近年來還收獲了重大突破。
  氣候變化是人類面臨的全球性問題,隨著全球二氧化碳濃度的持續增長,我們的生活以及健康都遭受到威脅。正因如此,隨著大眾對于環境問題的關注程度持續增長,解決溫室問題自然而然地成為了現階段發展的主要任務,而碳達峰、碳中和工作則是這個過程中重要的兩個目標。
 
  簡單地說“碳達峰”指的是環境內二氧化碳總排放不再增長達到峰值,之后逐步回落;“碳中和”指單位時間內,直接或間接產生的二氧化碳或溫室氣體排放總量與消耗量正負抵消,達到相對“零排放”。而想要實現這兩個目標,明確現階段碳排放的原因,并由此尋求突破尤為重要。
 
  那么原因是什么呢?簡單的來說就是人類活動,但具體到活動內容上就非常復雜。不過可以明確的一點是,化石燃料的使用在其中,影響頗為巨大。從歷史背景來說,化石燃料的應用推進了工業發展,一定程度上來說影響著城市的經濟建設。而時至今日,化石燃料依舊是交通以及工業領域重要的能源載體。但與此同時,化石燃料在使用的過程中會產生大量的溫室氣體。換言之,如果想要解決碳排放問題,我們就不得不先解決能源問題。
 
  事實上,針對化石燃料的替代品,研究人員也早就有了明確的目標——氫。氫本身在工業領域就有廣闊的應用場景,也是一種清潔能源,作為儲能燃料需要解決的問題也相對較少,甚至在燃氫發動機這塊,近年來還收獲了重大突破。但有一個問題卻一直沒有獲得圓滿的解決——綠色制氫。
 
  而就在最近,一項新的關于光催化高效水電解制氫技術的發現,或許能夠讓水電解制氫變得更加綠色高效。新加坡科學家團隊偶然發現,“光會觸發電催化反應的氧化還原中心在金屬和氧之間切換,從而大大提高水電解制氫的效率”?;诖?,該團隊正在設計一種新方法來改進氫氣生產的工業流程,如讓包含水的電池透明以便將光引入水電解過程。而這種新方法的最終目的就是讓電解制氫可以在更短的時間內以更低的能耗產生更多的氫氣。
 
  不過從長遠的發展來看,除了該技術以外,如果解決綠色發電難題,或者將光電與光催化相結合形成完整綠色產氫生產線同樣是需要思考的問題。
 
  原標題:新發現助力加快“綠氫”步伐 光催化高效水電解制氫獲突破

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