氧化鎂用于電池材料的注意事項

點擊數：3292023-07-03 17:41:44　來源: 本站原創

電(dian)(dian)池(chi)(chi)(chi)材(cai)料(liao)(liao)中(zhong)，氧(yang)化鎂(mei)(mei)(mei)可(ke)(ke)以(yi)作(zuo)為(wei)導電(dian)(dian)摻雜劑(ji)，通過(guo)固相反(fan)(fan)應(ying)生(sheng)成(cheng)摻鎂(mei)(mei)(mei)鋰鐵錳(meng)磷酸(suan)鹽(yan)，并進一(yi)步制成(cheng)納米(mi)結構的(de)(de)(de)正(zheng)(zheng)極(ji)(ji)(ji)材(cai)料(liao)(liao)，其(qi)實(shi)(shi)際(ji)放電(dian)(dian)容(rong)(rong)(rong)量(liang)達到(dao)240mAh/g。此(ci)新型(xing)(xing)(xing)正(zheng)(zheng)極(ji)(ji)(ji)材(cai)料(liao)(liao)具(ju)有(you)高能(neng)(neng)、安全、低價(jia)(jia)的(de)(de)(de)特(te)性(xing)(xing)，適(shi)用(yong)(yong)(yong)于液(ye)體與(yu)膠(jiao)體鋰離子(zi)電(dian)(dian)池(chi)(chi)(chi)、中(zhong)小型(xing)(xing)(xing)聚(ju)合物，特(te)別是適(shi)合大(da)功率的(de)(de)(de)動力電(dian)(dian)池(chi)(chi)(chi)。在(zai)鋰離子(zi)蓄電(dian)(dian)池(chi)(chi)(chi)正(zheng)(zheng)極(ji)(ji)(ji)材(cai)料(liao)(liao)中(zhong)添(tian)加適(shi)量(liang)的(de)(de)(de)納米(mi)氧(yang)化鎂(mei)(mei)(mei)，所(suo)得正(zheng)(zheng)極(ji)(ji)(ji)材(cai)料(liao)(liao)擁有(you)大(da)于140mAh/g的(de)(de)(de)可(ke)(ke)逆放電(dian)(dian)容(rong)(rong)(rong)量(liang)，且循環(huan)性(xing)(xing)能(neng)(neng)良好。在(zai)正(zheng)(zheng)極(ji)(ji)(ji)材(cai)料(liao)(liao)中(zhong)使用(yong)(yong)(yong)可(ke)(ke)以(yi)提(ti)(ti)高導電(dian)(dian)性(xing)(xing)，建議(yi)添(tian)加量(liang)0.3-0.5%。氧(yang)化鎂(mei)(mei)(mei)在(zai)電(dian)(dian)池(chi)(chi)(chi)中(zhong)的(de)(de)(de)使用(yong)(yong)(yong)方法(fa)：鋰電(dian)(dian)池(chi)(chi)(chi)正(zheng)(zheng)極(ji)(ji)(ji)材(cai)料(liao)(liao)，將氧(yang)化鎂(mei)(mei)(mei)作(zuo)為(wei)導電(dian)(dian)摻雜劑(ji)，通過(guo)固相反(fan)(fan)應(ying)生(sheng)成(cheng)摻鎂(mei)(mei)(mei)鋰鐵錳(meng)磷酸(suan)鹽(yan)，并進一(yi)步制成(cheng)納米(mi)結構的(de)(de)(de)正(zheng)(zheng)極(ji)(ji)(ji)材(cai)料(liao)(liao)，其(qi)實(shi)(shi)際(ji)放電(dian)(dian)容(rong)(rong)(rong)量(liang)達到(dao)240mAh/g。此(ci)新型(xing)(xing)(xing)正(zheng)(zheng)極(ji)(ji)(ji)材(cai)料(liao)(liao)具(ju)有(you)高能(neng)(neng)、安全、低價(jia)(jia)的(de)(de)(de)特(te)性(xing)(xing)，適(shi)用(yong)(yong)(yong)于液(ye)體與(yu)膠(jiao)體鋰離子(zi)電(dian)(dian)池(chi)(chi)(chi)、中(zhong)小型(xing)(xing)(xing)聚(ju)合物，特(te)別是適(shi)合大(da)功率的(de)(de)(de)動力電(dian)(dian)池(chi)(chi)(chi)。在(zai)以(yi)尖(jian)晶石錳(meng)酸(suan)鋰作(zuo)為(wei)正(zheng)(zheng)極(ji)(ji)(ji)材(cai)料(liao)(liao)的(de)(de)(de)鋰離子(zi)電(dian)(dian)池(chi)(chi)(chi)電(dian)(dian)解(jie)(jie)液(ye)中(zhong)，添(tian)加氧(yang)化鎂(mei)(mei)(mei)作(zuo)為(wei)脫酸(suan)劑(ji)除(chu)酸(suan)，添(tian)加量(liang)為(wei)電(dian)(dian)解(jie)(jie)液(ye)重量(liang)的(de)(de)(de)0.5-20%。通過(guo)對(dui)電(dian)(dian)解(jie)(jie)液(ye)進行除(chu)酸(suan)，使電(dian)(dian)解(jie)(jie)液(ye)中(zhong)的(de)(de)(de)游離酸(suan)HF的(de)(de)(de)含量(liang)下(xia)(xia)降至20ppm以(yi)下(xia)(xia)，減(jian)輕(qing)HF對(dui)LiMn2O4的(de)(de)(de)溶解(jie)(jie)作(zuo)用(yong)(yong)(yong)，并提(ti)(ti)高LiMn2O4的(de)(de)(de)容(rong)(rong)(rong)量(liang)與(yu)循環(huan)性(xing)(xing)能(neng)(neng)。