REACTION KINETICS BASED CHARACTERIZATION METHODS OF CARBON INTERCALATION COMPOUNDS IN NEGATIVE ELECTRODE
The present invention relates to a method for predicting a concentration of carbon interlayer compounds contained in a negative electrode active layer of a battery cell. The above prediction method can predict a change in concentration of carbon interlayer compounds due to a desorption reaction of l...
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Main Authors | , , , |
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Format | Patent |
Language | English Korean |
Published |
20.04.2023
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Subjects | |
Online Access | Get full text |
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Summary: | The present invention relates to a method for predicting a concentration of carbon interlayer compounds contained in a negative electrode active layer of a battery cell. The above prediction method can predict a change in concentration of carbon interlayer compounds due to a desorption reaction of lithium implemented in the negative electrode active layer of a charged battery cell under high temperature storage conditions in a non-destructive manner, thereby capable of reducing costs compared to conventional destruction methods. In addition, unlike conventional destructive methods, there are fewer electrode side reactions that may occur during a measurement process so that the concentration change of the carbon interlayer compound can be checked more accurately by using the method of the present invention. Thus, the present invention can be useful in research to improve irreversible capacity loss of batteries. The active layer of the negative electrode may further include one or more silicon materials among Si, SiC, and SiO_x (where 0.8<=x<=2.5).
본 발명은 전지 셀의 음극 활성층에 함유된 탄소층간 화합물의 농도를 예측하는 방법에 관한 것으로서, 상기 예측 방법은 고온 저장 조건에서 충전된 전지 셀의 음극 활성층에서 구현되는 리튬의 탈리 반응에 따른 탄소층간 화합물의 농도 변화를 비파괴 방식으로 예측할 수 있으므로, 종래 파괴 방식과 비교하여 비용을 절감할 수 있다. 또한, 종래 수행되는 파괴적 방식과는 달리 측정 과정에서 발생될 수 있는 전극의 부반응이 적어 보다 정확한 탄소층간 화합물의 농도 변화를 확인할 수 있으므로, 전지의 비가역적인 용량 손실을 개선을 위한 연구 등에 유용하게 사용될 수 있다. |
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Bibliography: | Application Number: KR20210135912 |