Suzuki Yuki, Imamura Yuki, Katsube Daiki, Kogure Akinori, Hirai Nobumitsu, Kimura Munehiro
Graduate School of Engineering, Nagaoka University of Technology, 1603-1 Kamitomioka, Nagaoka 940-2188, Japan.
Cluster for Pioneering Research, RIKEN, 2-1 Hirosawa, Wako 351-0198, Japan.
Materials (Basel). 2023 Mar 7;16(6):2146. doi: 10.3390/ma16062146.
The precise observation of a solid-liquid interface by means of frequency modulation atomic force microscopy (FM-AFM) was performed, demonstrating its applicability to a study on lead acid batteries using an electrochemical test cell for in-liquid FM-AFM embedded with a specialized cantilever holder. The consistency and reproducibility of each surface profile observed via amplitude modulation AFM and FM-AFM were verified properly in a strong acidic electrolyte. In terms of FM-AFM, the ability to observe remarkable changes in the force mapping is the most beneficial, especially near the negative electrode surface. The localization of lignosulfonate (LS) added into the electrolyte as an expander could be visualized since this characteristic force mapping was captured when LS was added to electrolyte.
利用调频原子力显微镜（FM-AFM）对固液界面进行了精确观察，通过嵌入特殊悬臂支架的用于液体中FM-AFM的电化学测试池，证明了其在铅酸电池研究中的适用性。在强酸性电解质中，通过调幅AFM和FM-AFM观察到的每个表面轮廓的一致性和可重复性得到了充分验证。就FM-AFM而言，观察力映射中显著变化的能力最为有益，尤其是在负极表面附近。由于在向电解质中添加木质素磺酸盐（LS）时捕获到了这种特征力映射，因此可以可视化作为膨胀剂添加到电解质中的LS的定位。
