石(shi)(shi)(shi)(shi)墨(mo)(mo)(mo)(mo)(mo)的(de)(de)(de)(de)石(shi)(shi)(shi)(shi)墨(mo)(mo)(mo)(mo)(mo)化(hua)(hua)(hua)爐(lu)高(gao)(gao)溫(wen)高(gao)(gao)壓法是什么
石(shi)(shi)(shi)(shi)墨(mo)(mo)(mo)(mo)(mo)因其耐高(gao)(gao)溫(wen)、高(gao)(gao)強度(du)的(de)(de)(de)(de)性(xing)(xing)質,石(shi)(shi)(shi)(shi)墨(mo)(mo)(mo)(mo)(mo)也常(chang)常(chang)在(zai)冶煉行業中用(yong)(yong)來制作石(shi)(shi)(shi)(shi)墨(mo)(mo)(mo)(mo)(mo)坩(gan)堝(guo)和冶金爐(lu)的(de)(de)(de)(de)內(nei)襯。石(shi)(shi)(shi)(shi)墨(mo)(mo)(mo)(mo)(mo)化(hua)(hua)(hua)爐(lu)廠家認為,較(jiao)為重要的(de)(de)(de)(de)是石(shi)(shi)(shi)(shi)墨(mo)(mo)(mo)(mo)(mo)具(ju)有(you)優良的(de)(de)(de)(de)導電(dian)(dian)(dian)性(xing)(xing),因此被用(yong)(yong)做(zuo)電(dian)(dian)(dian)極材料和復合(he)材料的(de)(de)(de)(de)基(ji)礎材料。這使其應(ying)用(yong)(yong)在(zai)高(gao)(gao)科技領域實現(xian)高(gao)(gao)值化(hua)(hua)(hua)利用(yong)(yong)成(cheng)(cheng)為可能(neng)。
石(shi)(shi)(shi)(shi)墨(mo)(mo)(mo)(mo)(mo)因具(ju)有(you)高(gao)(gao)可逆容量,良好(hao)的(de)(de)(de)(de)導電(dian)(dian)(dian)性(xing)(xing),良好(hao)的(de)(de)(de)(de)充放(fang)電(dian)(dian)(dian)電(dian)(dian)(dian)位分布和相對(dui)較(jiao)低的(de)(de)(de)(de)成(cheng)(cheng)本廣泛被應(ying)用(yong)(yong)于(yu)能(neng)源存儲設(she)備;將石(shi)(shi)(shi)(shi)油(you)焦在(zai)2600℃石(shi)(shi)(shi)(shi)墨(mo)(mo)(mo)(mo)(mo)化(hua)(hua)(hua)爐(lu)石(shi)(shi)(shi)(shi)墨(mo)(mo)(mo)(mo)(mo)化(hua)(hua)(hua)后,石(shi)(shi)(shi)(shi)墨(mo)(mo)(mo)(mo)(mo)化(hua)(hua)(hua)度(du)高(gao)(gao)達78.8%,將其用(yong)(yong)作鋰離(li)子電(dian)(dian)(dian)池負極材料,***充放(fang)電(dian)(dian)(dian)比容量達到326.1 mA·h·g-1,庫侖(lun)效率(lv)達78.8%,展示了(le)優越的(de)(de)(de)(de)電(dian)(dian)(dian)化(hua)(hua)(hua)學性(xing)(xing)能(neng);
石(shi)(shi)(shi)(shi)墨(mo)(mo)(mo)(mo)(mo)化(hua)(hua)(hua)爐(lu)使用(yong)(yong)煙(yan)(yan)煤(mei)作為前驅體(ti),通過初步炭化(hua)(hua)(hua)以及在(zai)2000~-2 800℃下進一步的(de)(de)(de)(de)高(gao)(gao)溫(wen)石(shi)(shi)(shi)(shi)墨(mo)(mo)(mo)(mo)(mo)化(hua)(hua)(hua)處理來制備合(he)成(cheng)(cheng)石(shi)(shi)(shi)(shi)墨(mo)(mo)(mo)(mo)(mo)材料。結(jie)果(guo)表明,合(he)成(cheng)(cheng)石(shi)(shi)(shi)(shi)墨(mo)(mo)(mo)(mo)(mo)材料的(de)(de)(de)(de)微觀結(jie)構強烈依賴于(yu)爐(lu)子的(de)(de)(de)(de)石(shi)(shi)(shi)(shi)墨(mo)(mo)(mo)(mo)(mo)化(hua)(hua)(hua)溫(wen)度(du)。人工合(he)成(cheng)(cheng)石(shi)(shi)(shi)(shi)墨(mo)(mo)(mo)(mo)(mo)在(zai)2800℃下爐(lu)子石(shi)(shi)(shi)(shi)墨(mo)(mo)(mo)(mo)(mo)化(hua)(hua)(hua),具(ju)有(you)完全有(you)序的(de)(de)(de)(de)層(ceng)狀結(jie)構,石(shi)(shi)(shi)(shi)墨(mo)(mo)(mo)(mo)(mo)化(hua)(hua)(hua)程度(du)高(gao)(gao),表面積較(jiao)大,中孔(kong)發(fa)育良好(hao),為炭基(ji)質中鋰離(li)子的(de)(de)(de)(de)電(dian)(dian)(dian)化(hua)(hua)(hua)學嵌入-脫(tuo)嵌提供了(le)良好(hao)的(de)(de)(de)(de)途(tu)徑(jing)。
使用(yong)(yong)兩種不同特性(xing)(xing)的(de)(de)(de)(de)無煙(yan)(yan)煤(mei)在(zai)2400~-2 800℃的(de)(de)(de)(de)石(shi)(shi)(shi)(shi)墨(mo)(mo)(mo)(mo)(mo)化(hua)(hua)(hua)爐(lu)溫(wen)度(du)范圍內(nei)通過熱處理制備了(le)石(shi)(shi)(shi)(shi)墨(mo)(mo)(mo)(mo)(mo),并測試了(le)其在(zai)鋰離(li)子電(dian)(dian)(dian)池中作為陽極的(de)(de)(de)(de)電(dian)(dian)(dian)化(hua)(hua)(hua)學性(xing)(xing)能(neng)。兩種無煙(yan)(yan)煤(mei)制備的(de)(de)(de)(de)石(shi)(shi)(shi)(shi)墨(mo)(mo)(mo)(mo)(mo)材料的(de)(de)(de)(de)晶體(ti)參數之間具(ju)有(you)相當好(hao)的(de)(de)(de)(de)線性(xing)(xing)相關性(xing)(xing)。