Method for exploring influence of interface potential on lithium ion transportation by using electronic holography
An electronic holography and lithium ion technology, applied in scanning probe technology, instruments, etc., can solve the problems of lack of detailed method interpretation
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[0036] (1) The prepared NCM811 polycrystalline particles are selected as the research object. The micron-level polycrystalline particles are composed of agglomeration of multiple nano-scale primary particles, and the average particle size is 10 μm. It is processed by a focused ion beam-electron beam double beam (FIB) equipment, and it goes through the process of sample area selection, Pt layer deposition, sample extraction by robot, scanning amorphous and thinning. The final thinning to a TEM thin specimen with a thickness of less than 100 nm, see figure 1 .
[0037] (2) The NCM811 TEM sample was placed in the objective lens spherical aberration corrected transmission electron microscope for observation. figure 2 The electron holographic imaging principle shown, adopts the method of elliptical spot imaging to obtain one vacuum electron hologram and five sample holograms, see image 3 .
[0038] (3) Subtract the five sample holograms of NCM811 from the vacuum hologram in tu...
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