Page 30 - Guide to Lithium-ion Battery Solutions
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Microanalysis
                                                                                                                                                                                各種部材の微小領域の形状観察および導電性分布測定



                         Purpose                                                                                                               Purpose


                  Surface shape observation in electrolyte                                                                              Force curve measurement in electrolyte
                  solution                                                                                                              solution


                         Samples                                                                                                               Samples


                  Binder for negative electrode                                                                                         Binder for negative electrode





                         Data




                       (1)                                             (2)


                                                                                                                                               Data



                                                                                                                                             (1)                         (2)                          (3)




                                    Protuberant                                       Flat


                       (3)










                                                                                                                                                                                                   Sample Provision:Komaba Lab of Tokyo University of Science
                                       Flat
                                                                            Sample Provision:Komaba Lab of Tokyo University of Science
                                                                                                                                               Result

                         Result                                                                                                         The deflection of the cantilever was measured when the probe was pushed into the sample by about 15 nm, and a
                                                                                                                                        force curve was obtained. Point B on the force curve indicates the start of the depression, and point A indicates a 15 nm
                                                                                                                                        depression from point B. The amount of binder deformation can be obtained from the difference between the amount
                  It was confirmed that the flat binders (2) and (3) were uniformly gelled in the electrolyte.                          of indentation and the amount of deflection from point B to point A. From the data obtained, the amount of binder
                  SPM enables observation of an electrolyte in a real-world environment!
                                                                                                                                        deformation indicates that (2) is the least rigid and (3) is the most rigid.



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