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  • 燃料電池壽命短?已有使燃料電池壽命延長10倍的方法

    • 2019-07-24 18:08
    • 來源:第一元素

    摘要:燃料電池的價格非常昂貴,并且壽命短。滑鐵盧大學的科學家已經開發出一種新型燃料電池,其壽命至少比現有技術長10倍。

    近幾年,越來越多的人開始關注電動汽車的發展前景。但它也有一些缺點,比如續航里程短,電池價格貴等問題。

    電動汽車可以行駛500多公里,但傳統的汽油車可以輕松翻倍,且不用說加油比給電動車充電要快得多。

    什么是解決方案?科學家認為,未來燃料電池可以取代內燃機成為主流。

    燃料電池壽命短?已有使燃料電池壽命延長10倍的方法

    當氫和氧結合形成水時,燃料電池通過化學反應產生電能,可以存儲在電池中或僅用于為發動機提供動力,且燃料電池唯一的排放物是水蒸氣。

    并且充滿氫氣罐只需幾分鐘,幾乎與填充傳統汽油罐所需的時間相同。

    然而,燃料電池的價格非常昂貴,并且燃料電池壽命短,這意味著很快就需要更換,這使得燃料電池驅動的汽車在經濟性上有一定不足。

    但是現在,滑鐵盧大學的科學家已經開發出一種新型燃料電池,其壽命至少比現有技術長10倍。

    發明背后的科學家之一李翔國說:“我們已經找到了降低成本并仍能滿足耐用性和性能預期的方法。我們正在實現經濟目標,同時為運輸應用提供零排放”。

    燃料電池壽命短?已有使燃料電池壽命延長10倍的方法

    這些燃料電池不是產生波動電流而是產生恒定功率。

    研究人員通過戰略性功率管理,讓每個電池堆棧只在固定運行點(如輸出恒定功率)工作,同時通過開關控制縮短其工作時間(運行),以創新方式配置燃料電池插電式混合電動汽車(FC-PHEV)的三個燃料電池堆棧,從而大大提高了電池的耐久性。

    研究人員設計了一種功率管理滯后控制策略,使電池工作時間均勻地分布在三個燃料電池堆棧上,并且減少了開關次數。

    結果表明,在城市道路、高速公路和城市-高速公路結合的駕駛中,車載燃料電池的耐久性分別提高了11.8倍、4.8倍和6.9倍。

    燃料電池耐久性得以提高源于實時駕駛時的平均功率需求只占FC-PHEV所能提供的最大功率的一小部分,而顯著提高耐久性可以減少燃料電池的過度設計,從而降低成本。

    燃料電池汽車相對純電動汽車是一個進步,因為燃料電池汽車的燃料填充速度很快,但電動汽車充電卻很慢。

    但是這里面有一個問題,電動汽車可以直接通過電力來驅動汽車,但氫首先需要電力才能生產出來,然后氫燃料電池車再通過氫氣來提供動力,因此效率是容易被詬病的地方。

    研究人員希望在混合動力汽車中推出燃料電池,可實現大規模生產,從而降低生產成本。

    通過提供一種價格低廉、安全可靠、又清潔的電力能源,將為燃料電池完全取代電池和內燃機鋪平道路。

    燃料電池壽命短?已有使燃料電池壽命延長10倍的方法

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    關鍵字: 氫燃料電池
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    燃料電池行業 氫化錳有望助氫動力車續航增四倍

    英國蘭卡斯特大學的大衛·安東內利教授領導的一個國際研究小組發現了一種由氫化錳制成的新材料提供了新的解決方案,這種新材料將被用于在燃料箱中制造分子篩,燃料箱儲存氫然后與燃料電池一起在氫動力系統中工作。
    關鍵字: 燃料電池 氫能汽車
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    燃料電池行業 代替還是共存?氫燃料汽車的未來

    電車資源了解到中國國內首座油氫合建站——中國石化佛山樟坑油氫合建站于近日正式建成。這意味著由國企出資投建的油氫合建站進入一個新征程。中石油、BP、殼牌、道達爾等公司都在積極布局氫能。
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    燃料電池行業 沾氫就火!上半年氫能投資已超去年全年

    截至8月7日的半年以來,燃料電池概念板塊指數上漲8.47%,行業板塊指數上漲8.59%,包括全柴動力、中通客車、長城電工等多家企業出現漲停。
    關鍵字: 燃料電池 氫能
    2019-08-10

    燃料電池行業 氫能:油氣公司下一個戰略選擇

    中石化宣布,國內首座油氫合建站中國石化佛山樟坑油氫合建站正式建成。氫能時代正在向我們走來,中石化不是全球第一家切入氫能的油氣公司,中石油、殼牌、BP、道達爾等都在積極布局。
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    電車資源2019年活動排期
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    東風俊風純電動物流車秒殺
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