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Method for removing impurities on surface of lithium-lanthanum-zirconium-oxygen electrolyte of solid-state lithium battery
The invention relates to the field of oxide solid electrolytes, in particular to a method for removing impurities on the surface of a lithium-lanthanum-zirconium-oxygen electrolyte of a solid-state lithium battery. The method comprises the following steps of: transferring a lithium-lanthanum-zirconium-oxygen sheet containing impurities into an analysis chamber of an X-ray photoelectron spectrometer, and gradually heating in a vacuum environment to remove the impurities on the surface of the lithium-lanthanum-zirconium-oxygen sheet; carrying out in-situ XPS testing on the surface of the lithium-lanthanum-zirconium-oxide sheet in the step-by-step heating process; after impurities on the surface of the lithium-lanthanum-zirconium-oxide sheet are removed, cooling the in-situ heating sample table to the room temperature and then transferring the in-situ heating sample table into a glove box connected with the X-ray photoelectron spectrometer, and taking down the lithium-lanthanum-zirconium-oxide sheet from the in-situ heating sample table to obtain the pure lithium-lanthanum-zirconium-oxide sheet. According to the method, vacuum annealing and in-situ XPS testing are used, removal of the impurity layer on the surface of the lithium-lanthanum-zirconium-oxide sheet is combined with surface component monitoring, and high-precision removal of impurities on the surface of the lithium-lanthanum-zirconium-oxide sheet is achieved.
本发明涉及氧化物固体电解质领域，具体涉及一种去除固态锂电池锂镧锆氧电解质表面杂质的方法，其通过将含有杂质的锂镧锆氧片传入到X射线光电子能谱仪的分析室内，然后在真空环境下，进行逐步加热以去除锂镧锆氧片表面的杂质，并在逐步加热过程中对锂镧锆氧片表面进行原位XPS测试，待锂镧锆氧片表面的杂质去除后，将原位加热样品台冷却至室温，然后将其转移至与X射线光电子能谱仪相连的手套箱内，在手套箱内将锂镧锆氧片从原位加热样品台上取下，得到纯净的锂镧锆氧片。本发明的方法使用真空退火和原位XPS测试，将锂镧锆氧片表面的杂质层的去除与表面成分监测结合，实现了对锂镧锆氧片表面杂质的高精度去除。
Method for removing impurities on surface of lithium-lanthanum-zirconium-oxygen electrolyte of solid-state lithium battery
The invention relates to the field of oxide solid electrolytes, in particular to a method for removing impurities on the surface of a lithium-lanthanum-zirconium-oxygen electrolyte of a solid-state lithium battery. The method comprises the following steps of: transferring a lithium-lanthanum-zirconium-oxygen sheet containing impurities into an analysis chamber of an X-ray photoelectron spectrometer, and gradually heating in a vacuum environment to remove the impurities on the surface of the lithium-lanthanum-zirconium-oxygen sheet; carrying out in-situ XPS testing on the surface of the lithium-lanthanum-zirconium-oxide sheet in the step-by-step heating process; after impurities on the surface of the lithium-lanthanum-zirconium-oxide sheet are removed, cooling the in-situ heating sample table to the room temperature and then transferring the in-situ heating sample table into a glove box connected with the X-ray photoelectron spectrometer, and taking down the lithium-lanthanum-zirconium-oxide sheet from the in-situ heating sample table to obtain the pure lithium-lanthanum-zirconium-oxide sheet. According to the method, vacuum annealing and in-situ XPS testing are used, removal of the impurity layer on the surface of the lithium-lanthanum-zirconium-oxide sheet is combined with surface component monitoring, and high-precision removal of impurities on the surface of the lithium-lanthanum-zirconium-oxide sheet is achieved.
本发明涉及氧化物固体电解质领域，具体涉及一种去除固态锂电池锂镧锆氧电解质表面杂质的方法，其通过将含有杂质的锂镧锆氧片传入到X射线光电子能谱仪的分析室内，然后在真空环境下，进行逐步加热以去除锂镧锆氧片表面的杂质，并在逐步加热过程中对锂镧锆氧片表面进行原位XPS测试，待锂镧锆氧片表面的杂质去除后，将原位加热样品台冷却至室温，然后将其转移至与X射线光电子能谱仪相连的手套箱内，在手套箱内将锂镧锆氧片从原位加热样品台上取下，得到纯净的锂镧锆氧片。本发明的方法使用真空退火和原位XPS测试，将锂镧锆氧片表面的杂质层的去除与表面成分监测结合，实现了对锂镧锆氧片表面杂质的高精度去除。
Method for removing impurities on surface of lithium-lanthanum-zirconium-oxygen electrolyte of solid-state lithium battery
一种去除固态锂电池锂镧锆氧电解质表面杂质的方法
ZHOU YIFAN (author) / XIE FANGYAN (author) / SONG SHUQIN (author) / YANG MUZI (author) / CHEN JIAN (author) / GONG LI (author)
2021-07-13
Patent
Electronic Resource
Chinese
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