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“鹽”也能做超級電池?新型高能量密度儲能系統問世
發布者:wwh | 來源:歐洲海上風電 | 0評論 | 6566查看 | 2019-04-30 12:00:32    

2018年10月,聯合國氣候變化專門委員會(IPCC)曾發出重磅警告:全球升溫幅度需控制在1.5攝氏度,否則地球在2030年之后,會迎來毀滅性氣候。


在(zai)這(zhe)個背景下,發(fa)展風(feng)電、太陽能(neng)(neng)(neng)(neng)等(deng)(deng)新(xin)能(neng)(neng)(neng)(neng)源(yuan)(yuan)已經達成全球共識,但(dan)是(shi)新(xin)能(neng)(neng)(neng)(neng)源(yuan)(yuan)固有的間歇性(xing)、不穩定(ding)性(xing)、慣(guan)性(xing)差等(deng)(deng)特點一定(ding)程度上影響了新(xin)能(neng)(neng)(neng)(neng)源(yuan)(yuan)行業(ye)的發(fa)展,如(ru)何(he)才(cai)能(neng)(neng)(neng)(neng)讓新(xin)能(neng)(neng)(neng)(neng)源(yuan)(yuan)更(geng)好地(di)服務全人類?除了發(fa)展智能(neng)(neng)(neng)(neng)電網,推進發(fa)展儲能(neng)(neng)(neng)(neng)技術也(ye)是(shi)一個重要的解(jie)決手段。


儲能類型


目(mu)前流(liu)行的儲(chu)(chu)能(neng)(neng)(neng)(neng)方式主要分(fen)為(wei)幾類(lei)(lei):機械類(lei)(lei)儲(chu)(chu)能(neng)(neng)(neng)(neng)、電(dian)(dian)(dian)(dian)氣類(lei)(lei)儲(chu)(chu)能(neng)(neng)(neng)(neng)、電(dian)(dian)(dian)(dian)化(hua)(hua)(hua)學類(lei)(lei)儲(chu)(chu)能(neng)(neng)(neng)(neng)、熱儲(chu)(chu)能(neng)(neng)(neng)(neng)、化(hua)(hua)(hua)學類(lei)(lei)儲(chu)(chu)能(neng)(neng)(neng)(neng)。在風電(dian)(dian)(dian)(dian)、太陽能(neng)(neng)(neng)(neng)發電(dian)(dian)(dian)(dian)項目(mu)中(zhong),大多數儲(chu)(chu)能(neng)(neng)(neng)(neng)采(cai)用了抽水蓄能(neng)(neng)(neng)(neng)(機械能(neng)(neng)(neng)(neng)儲(chu)(chu)能(neng)(neng)(neng)(neng))、鉛酸蓄電(dian)(dian)(dian)(dian)池(電(dian)(dian)(dian)(dian)化(hua)(hua)(hua)學類(lei)(lei)儲(chu)(chu)能(neng)(neng)(neng)(neng))、鋰電(dian)(dian)(dian)(dian)池(電(dian)(dian)(dian)(dian)化(hua)(hua)(hua)學類(lei)(lei)儲(chu)(chu)能(neng)(neng)(neng)(neng))、液流(liu)電(dian)(dian)(dian)(dian)池(電(dian)(dian)(dian)(dian)化(hua)(hua)(hua)學類(lei)(lei)儲(chu)(chu)能(neng)(neng)(neng)(neng))、燃料(liao)電(dian)(dian)(dian)(dian)池(化(hua)(hua)(hua)學類(lei)(lei)儲(chu)(chu)能(neng)(neng)(neng)(neng))、熔鹽(yan)(熱儲(chu)(chu)能(neng)(neng)(neng)(neng))等。


新的“鹽電池”儲能


本次(ci)德國(guo)示范項(xiang)目中采用的(de)是(shi)一(yi)(yi)種鹽(yan)(yan)基儲能(neng)系統(tong)——“鹽(yan)(yan)電池(chi)”,介質采用一(yi)(yi)種新的(de)材料——納(na)米(mi)涂層(ceng)鹽(yan)(yan)(nano-coatedsalt),屬(shu)于化學(xue)儲能(neng)的(de)一(yi)(yi)種方式。下(xia)面這個圖就(jiu)是(shi)納(na)米(mi)涂層(ceng)的(de)真容(rong)。


實驗結果顯示(shi)這款“鹽電池(chi)”的能量(liang)密度是水的10倍(bei),接近熔鹽能量(liang)密度兩倍(bei)。其(qi)充放次數(shu)可達數(shu)千次(鋰電池(chi)約(yue)1500次),儲存的能量(liang)即使在常溫下(xia)存放幾個月也(ye)不(bu)會有(you)損失。


該技術可在(zai)現有的(de)(de)熱(re)電(dian)廠(chang)基礎上升(sheng)級改(gai)造(zao),能靈活地和風(feng)電(dian)、太陽(yang)能、電(dian)網(wang)、電(dian)力用(yong)戶的(de)(de)結合,實(shi)現能源高效(xiao)率(lv)用(yong),并(bing)增(zeng)加電(dian)網(wang)穩定性,如果該技術經(jing)濟(ji)可行,將會(hui)為風(feng)電(dian)等新能源發(fa)展帶來非常(chang)大的(de)(de)好(hao)處。


“鹽電池”小知識


“鹽(yan)電(dian)(dian)池(chi)”是用納米涂層鹽(yan)作為介質化學(xue)儲能電(dian)(dian)池(chi),通過分(fen)離鹽(yan)和水分(fen)子(zi),可以(yi)(yi)實(shi)現給“鹽(yan)電(dian)(dian)池(chi)”充電(dian)(dian),然后通過水和鹽(yan)結合(he)又可以(yi)(yi)”放電(dian)(dian)“,大(da)概步驟如下(xia):


1.“鹽電(dian)池(chi)”沒有充能(neng)的時候,“鹽電(dian)池(chi)”處于鹽和(he)水的混合狀(zhuang)態(tai);


2.當給“鹽(yan)(yan)電(dian)池”加熱到500℃時,鹽(yan)(yan)中的水分都被(bei)蒸(zheng)發就(jiu)變成了(le)“干鹽(yan)(yan)”;


3.哪怕(pa)保(bao)存在室溫下,只(zhi)要(yao)保(bao)證其干燥狀態,“鹽電池”就可以一直保(bao)存能量;


4.只要(yao)在“鹽(yan)”中(zhong)加入蒸(zheng)汽或水(shui),兩者就會(hui)發(fa)生(sheng)化學反應釋放(fang)高達500℃的熱能。

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