鋰-氧氣電池中的水添加劑的關(guān)鍵作用:減少副產(chǎn)物和降低過(guò)電位
發(fā)布時(shí)間:2018-05-30 15:58
本文選題:理論容量 + 能量密度。 參考:《物理化學(xué)學(xué)報(bào)》2017年06期
【摘要】:正傳統(tǒng)鋰離子電池能量密度(200-250 Wh?kg~(-1))的不足嚴(yán)重制約了電動(dòng)汽車的進(jìn)一步發(fā)展,鋰-氧氣/空氣電池因具有比前者高出約十倍的理論容量和能量密度(約2000 Wh?kg~(-1)),從而吸引了學(xué)術(shù)界和工業(yè)界的廣泛關(guān)注~1。然而,鋰-氧氣/空氣電池中的很多關(guān)鍵問(wèn)題都還未得到解決,其倍率性能和循環(huán)壽命受限于電解液/電極面對(duì)超氧化物親核攻擊的穩(wěn)定性,以及高充電電位下發(fā)生的副反應(yīng)~2。
[Abstract]:The lack of energy density of conventional Li-ion batteries (200-250 Wha kg-1) has seriously restricted the further development of electric vehicles. Lithium-oxygen / air batteries have a theoretical capacity and energy density of about 10 times higher than the former (about 2000?)? However, many key problems in lithium-oxygen / air batteries have not been solved. Their rate performance and cycle life are limited by the stability of electrolyte / electrode to superoxide nucleophilic attack, and the side reactions at high charging potential.
【作者單位】: 武漢大學(xué)化學(xué)與分子科學(xué)學(xué)院;
【分類號(hào)】:TM911.41
,
本文編號(hào):1955875
本文鏈接:http://sikaile.net/kejilunwen/huagong/1955875.html
最近更新
教材專著