*ly thuyet ve acquy chi:

+so do dien hoa: (-) Pb| H2SO4 |PbO2 (+)

lich su hinh thanh acquy chi keo dai tu nam 1859 khi Plang dua ra co so phat minh acquy va che tao acquy chi dau tien (1860) .den 1881,acquy chi duoc cai tien,khac phuc duoc cac nhuoc diem bang cach tao cac tam dien cuc chi luoi,dung bot PbO2 va no duoc su dung pho bien trong doi song, kt (bat dau tu 1882).

+ly thuyet caac qua trinh dien cuc:

     (-) Pb + SO42- --->PbSO4(r) + 2e-

     (+) PbO2 + 4H+ + SO42- --->PbSO4(r) + 2H2O - 2e-

phan ung tong cong

     Pb + PbO2 + 4H+ + 2SO42-  <=> 2PbSO4(r) + 2H2O

*cac yeu to anh huong den dung luong cua acquy chi:

+ luong chat hoat dong: luong chat hoat dong cang nhieu,chat luong cang tot thi dung luong lon va nguoc lai,neu co tap chat se tang su tu phong va giam dung luong

+ nhiet do khi tang nhiet do thi dung luong cua acquy chi tang do dien tro trong giam va suc dien dong E tang,ngoai ra nhiet do con anh huong den cac qua trinh dien cuc

+ tinh chat cua chat hoat dong:the hien o do tinh khiet va kich thuoc cua chat hoat dong.VD : kich thuoc hat min thi be mat tiep xuc pha lon,phan ung duoc xay ra nhanh --> dung luong lon

+ nong do chat dien giai:nong do H2SO4 thich hop la 32->34%.nong do cao qua gay thoat hoi axit an mon duoc, nong do thap qua lam giam dung luong,dung dich khong dong nhat lam tang su tu phong

+ che do hoat dong: duong cong phong nap it bien doi theo  (t).can chon che do hoat dong phong,nap hop ly.neu phong nap qua sau,hay nap khong du deu lam giam dung luong

+ thoi gian su dung: tuoi tho acquy chi khong cao,de bay hoi axit khi nap va co su tu phong lam giam dung luong