研究正極活性物質(zhì)（PMA）的結(jié)構(gòu)，相伴有兩類問題：結(jié)構(gòu)的形成
及其組織；電他在使用過程中，正極活性物質(zhì)結(jié)構(gòu)的變化與衰敗。
首先對正極活性物質(zhì)的結(jié)構(gòu)與組織要有清晰的了解，自從20世紀60年代確定鉛酸蓄電池正極活性物質(zhì)中PbsO₂有a-PbO₂晶體，它是PbsO₂的變體，它只能在堿性或中性介質(zhì)中形成。還有作者提出a/p比在正極活性物質(zhì)中決定正極的性能。
后來對a- PbsO₂及各B- PbsO₂這兩種變體的形狀由Simon確定。a-PbOZ是針狀晶，a-PbO：是大小相等的小多面體。接著首次提出了正極活性物質(zhì)的結(jié)構(gòu)模型：針狀Q-PbO：晶體形成-個網(wǎng)狀體，這個網(wǎng)狀體是-個導電體，且給極板賦予機械強度，多面體卜PbO：晶體參與充／放過程，并決定極板容量。
這個模型很快被拋棄，因為活性物質(zhì)中針狀的a-PbO：晶體已得到確認，并且認為Pbo：晶體的形態(tài)學取決于鉛膏中晶體的形態(tài)學。為了說明正極活性物質(zhì)容量是取決于叮pPbo：比，采用不同的正極活性物質(zhì)對容量進行對比，不同鉛膏形成的正極活性物質(zhì)由不同的相組成，而這些活性物質(zhì)容量是相等的，而當正極活性物質(zhì)有不同微觀結(jié)構(gòu)組成的3BS鉛膏與4BS鉛膏形成的正極活性物質(zhì)時，盡管相組成相同，而容量則有區(qū)別。

The structure that studies cathode live material(PMA), concomitant have two types of problems:The formation of structure
And its organization;Give or get an electric shock him in the process of using in, changing of cathode live material structure and decline.
Have to have clear understand to structure and organization of cathode activity material first, ever since that time 60's in 20th century certain lead sour storage battery cathode the PbsO2 contain a-PbO2 crystalses in the middle of the live material, it is a changing of PbsO2 body, it can at alkalescence or neuter gender lie to form in the quality.Still have the author puts forward a|the p compare in the cathode to decide a cathode in the live material of function.
Afterwards to the a- PbsO2 and each B- PbsO2 these are two kinds of change body of the shapes is made sure by Simon.The a-PbOZ is needle-like in shape crystal, a-PbO:It is the much smaller noodles body of all of the equalities.Immediately after put forward the structure model of cathode activity material for the very first time:Needle-like in shape Q-PbO:Crystal formation- net body, this net body BE-conduct electricity a body, and give pole the plank give machine strength, much noodles body Bu PbO:The crystal participates in Chong/pass a distance, and decide pole plank capacity.
This model is soon abandonned, because of the needle-like in shape a-PbO in the live material:The crystal has already got confirmation, and thinks Pbo:The appearance of crystal learns to be decided by the appearance of crystal in the lead cream to learn.For explaining the live material capacity of cathode is to be decided by Ding pPbo:Ratio, adopt the different cathode's live material carries on contrast to the capacity, the cathode live material of different lead cream formation from dissimilarity of mutually constitute, but these live material capacity is equal, but when cathode the live material has the cathode that the 3 BS lead cream and the 4 BS lead cream that the different tiny view structure constitutes form live material, though mutually constitute a homology, but the capacity then has differentiation.

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