The effects of hydrogen evolution reaction on the deformation of zinc anode which cycles at nearly 100% depth of discharge (DOD) are studied. Results show that the generated hydrogen bubbles during charging process will gather on the surface of the middle of the anode and will cover the ZnO which is produced by the hydrolysis of Zn (OH)₄²⁻ and prevent ZnO participation in the charging process. Since the charge-discharge reaction only occurs at the edges of the bubbles, the multiple dissolution and redeposition of the active material results in the formation of a massive ZnO and a very low specific discharge capacity. This finding provides a new perspective for the deformation of zinc anodes of the secondary alkaline zinc-based batteries.

研究了析氢反应对锌阳极变形的影响，锌阳极在接近100％的放电深度（DOD）下循环。结果表明，在充电过程中产生的氢气泡将聚集在阳极中间的表面上，并覆盖由Zn（OH）₄ ^2-水解产生的ZnO，并阻止ZnO参与充电过程。由于充放电反应仅发生在气泡的边缘，因此活性材料的多次溶解和再沉积导致形成大量的ZnO和非常低的比放电容量。这一发现为二次碱性锌基电池的锌阳极变形提供了新的视角。