The factors influencing the positive-plate life of valve-regulated lead-acid (VRLA) batteries have been disscussed in this paper in terms of positive-activemass layer (PAM ), active-mass collecting layer (AMCL) and corrosion layer (CL).

• 从正极活物层（PAM），活物聚集层（AMCL）和腐蚀层（CL）阐述影响阀控式铅酸（VRLA）蓄电池正极寿命的因素。