正極鉛膏用添加劑正極活性物質(zhì)微觀結構非常脆弱，它取決于發(fā)生在Pbc ) ：多個團塊表面上的過程。然而這些過程當強烈干擾并影響其進行機理時，就會導致Pb 伍晶體和團塊的脫落，以及活性物質(zhì)鈍化或軟化。正是由于這些限制，所用在正極鉛膏中的添加劑無論數(shù)量或者品種，都比負極添加劑相對要少得多。一般來說，正極添加劑發(fā)揮一種．單純的機械作用。提高極板的結構強度與增加活性物質(zhì)的孔隙度，這些物質(zhì)有所謂“穩(wěn)定強化添加劑”或稱“保持性添加劑”。這類增強劑有短纖維3mm 長的聚醋、聚丙烯纖維，還有聚四氟乙烯乳液或者適量的磷酸。
正極活性物質(zhì)的容量是可以提高的，用增加活性物質(zhì)的孔隙度與增加導電性都可以實現(xiàn)正極增容。但添加這些發(fā)孔劑、導電劑一類物質(zhì)時要求在可靠無疑的范圍內(nèi)，因為最容易超限。一旦超限就會引起正極活性物質(zhì)崩壞，縮短電池壽命。
The cathode lead cream is used tiny view structure of live material of additive cathode very weak, it is decided by occurrence in Pbc):Several conglomeration superficial of process.However these processes are strong interference and influence it to carry on mechanism, will cause Pb five sheding off of crystals and conglomerationses, and the live material bluntness turns or softens.BE exactly because of these restriction, use in the cathode lead additive within cream regardless amount or species, all more opposite than anode additive want to be little many.Generally speaking, the cathode additive develops 1 kind. pure of machine function.The hole degree that raises pole knothole structure strength and increment activity material, these materials have to call "stability enhance an additive" or call"keep sex additive".This have a long short fiber 3 mm of gather a vinegar, polypropylene fiber, also have already gathered four fluorine ethylene lotion or just the right amount of phosphoric acid.
Cathode activity material of the capacity can raise, using hole degree and increment electrical conductivity of increasing the activity materials can carry out a cathode to increase to permit.But add these hair bore, conduct electricity a type of material request in the dependable and beyond doubt scope, because of most easily super limit.Once the super limit will arouse live material of cathode to collapse bad, shorten battery life.
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