Abstract: A target device receives a plurality of pieces of first data, where each piece of the plurality of pieces of first data includes first ephemeris information and/or first almanac information. The target device identifies abnormal first data among the plurality of pieces of first data, where the plurality of pieces of first data include the abnormal first data, and the plurality of pieces of first data are obtained by the target device from a plurality of access network devices. A plurality of pieces of first ephemeris information and/or a plurality of pieces of first almanac information in the plurality of pieces of first data correspond to a first satellite. The target device may determine, by using the plurality of pieces of first ephemeris information and/or the plurality of pieces of first almanac information, that a piece of first ephemeris information and/or a piece of first almanac information is abnormal.

Abstract: The use of a C10~C34 fatty acids compound in the preparation of a the electrode materials for lithium-ion battery improves the coating uniformity of electrode materials prepared with solid-state method. The fatty acid provided by the invention is a dispersant, which achieves the uniformly dispersion of the coating material on the surface of battery material, and significantly increases the coating uniformity of the electrode material coated with solid-state method, it greatly improves the feasibility of manufacturing the electrode material of lithium-ion battery with solid-state method, and is conducive to the more economical and simpler manufacture of electrode material.

Abstract: The invention relates to a method for preparing materials with composition gradient characteristics. After mixing a lithium source with the prepared precursor, raise the temperature from room temperature to 300° C.˜600° C. at 2° C./min˜10° C./min and maintain it, and then sinter for 5 hours˜18 hours, cool with the furnace, then raise the temperature from room temperature to 600° C.˜1200° C. at 2° C./min˜10° C./min and maintain it, and sinter for 5 hours˜18 hours, and the material is thus obtained. The material prepared with the method provided by the invention has composition gradient characteristic, and its application to the positive electrode of battery enables the battery to have higher energy density and better thermal stability, and prolonged service life.