Lg Energy Solution, Ltd.

Jung Hoon Han

Joo Yul Baek

Byung Joon Chae

Ji Yeon Byeon

Byung Hee Choi

The present invention provides a method for measuring a distribution of pores in an electrode for a secondary battery, which can easily measure a distribution of pores inside the electrode for a secondary battery.

Method for measuring distribution of pores in electrode for secondary battery

The present disclosure relates to a method for analyzing an electrode for a battery, which has the advantage of being capable of more easily distinguishing between the constituent materials of the electrode such as the electrode active material, the conductive material, and the pores, by using scanning spreading resistance microscopy.

Battery electrode analysis method

Provided is an analysis method for a crack rate of an electrode active material of an electrode, comprising the steps of: forming an electrode including an electrode active material, a binder, and a conductive material; impregnating the electrode with a resin and visualizing material regions including the electrode active material, the binder, and the conductive material which are included in the electrode, and a pore region; cutting the electrode and forming an electrode cross-section sample; photographing a cross section of the electrode cross-section sample using a scanning electron microscope and obtaining a cross-sectional image; performing primary image processing on the cross-sectional image and extracting total surface area pixels of the electrode active material; performing secondary image processing on the cross-sectional image and extracting total boundary pixels of the electrode active material; and calculating a crack rate of the electrode active material of the electrode in the cross-sectional image.

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Daejeon, South Korea

Jung Hoon Han