Debonding often occurs in flexible batteries due to mechanical and electrochemical coupling during service. Debonding of electrode will seriously affect the capacity and life of the battery, and even cause a short circuit inside the battery, resulting in spontaneous combustion. Here, the adhesion performance between the electrode sheet and the active material are investigated under the electrolyte environment and different states of charge (SOCs). A small stretcher loading device is used to perform stripping experiments on positive electrodes and negative electrodes in a glove box filled with argon to obtain the peel strength. The binders used in the positive and negative electrodes in this paper are polyvinylidene fluoride (PVDF) and Styrene-Butadiene Rubber/Carboxymethyl Cellulose (SBR/CMC). Compared with the electrode sheet without electrolyte, the peel strength of the positive electrode and negative electrode is decreased by 89.7% and 46.3%, respectively. The significant reduction in peel strength is due to the swelling effect of the electrolyte on the binder. The scanning electron microscope observation shows that there is a large number of active material particles at the interface of the positive electrode and the negative electrode after peeling. Additionally, the peel strength of the positive electrode was increases slightly with the increase of SOC and the added value is 14.8%. But the peel strength of negative electrode decreased with the increase of SOC and the added value is 47.6%. These results play an essential role in evaluating the interface peel strength of the electrode sheet in the different environment and designing electrochemical performance for batteries.

在使用过程中，由于机械和电化学耦合，软电池中经常发生脱胶现象。电极剥离会严重影响电池的容量和寿命，甚至导致电池内部短路，导致自燃。在此，研究了在电解质环境和不同电荷状态（SOC）下电极片与活性材料之间的粘合性能。使用小型担架加载设备对装有氩气的杂物箱中的正极和负极进行剥离实验，以获得剥离强度。本文正负极中使用的粘合剂是聚偏二氟乙烯（PVDF）和苯乙烯-丁二烯橡胶/羧甲基纤维素（SBR / CMC）。与没有电解质的电极片相比，正极和负极的剥离强度分别降低了89.7％和46.3％。剥离强度的显着降低是由于电解质对粘合剂的溶胀作用。扫描电子显微镜观察表明，剥离后在正极和负极的界面上存在大量的活性物质颗粒。另外，正极的剥离强度随着SOC的增加而稍微增加，其增加值为14.8％。但是负极的剥离强度随着SOC的增加而降低，其附加值为47.6％。这些结果在评估不同环境下电极片的界面剥离强度以及设计电池的电化学性能方面起着至关重要的作用。