Abstract: Disclosed are a positive electrode material, a preparation method therefor, and an application thereof. The method includes: (1) performing a co-precipitation reaction by mixing a soluble manganese salt and a soluble metal M salt with carbonate, to obtain a co-precipitate containing MxMn1-xCO3; and (2) sintering the co-precipitate containing MxMn1-xCO3 in an air atmosphere to obtain the positive electrode material containing MxMn1-xP2, where M is at least one selected from Al, Zr, Ti, Ni, Co, Mg, Ta, Ca, Fe, Na, K, Cu, Zn, Nb, Sn, Sb, La and In, and where x is in a range from 0 to 1 excluding endpoints 0 and 1.

Abstract: Provided are a zinc ion battery positive electrode material, a preparation method therefor, and an application thereof. The preparation method for the zinc ion battery positive electrode material includes: performing a sintering treatment on manganese carbonate to obtain the zinc ion battery positive electrode material. In this method, through a heat treatment of manganese carbonate, a zinc ion battery positive electrode material with high performance can be obtained. In addition, the method requires low raw material and simple preparation processes, and thus it is suitable for industrial production.

Abstract: Embodiments of the present application disclose a method, device and storage medium for pushing information during a call. The method for pushing information during a call includes: obtaining a recommendation information group pre-uploaded to a server by a peer user before the call is answered or hung up; determining a recommendation information category to be recommended according to a real-time state of a mobile terminal of a local user; and selecting recommendation information for recommending from the recommendation information group according to the recommendation information category. By means of the method, device and storage medium for pushing information during a call provided in the embodiments of the present application, the information recommending forms during a call are diversified.

Abstract: Embodiments of the present application disclose a method, device and storage medium for pushing information during a call. The method for pushing information during a call includes: obtaining a recommendation information group pre-uploaded to a server by a peer user before the call is answered or hung up; determining a recommendation information category to be recommended according to a real-time state of a mobile terminal of a local user; and selecting recommendation information for recommending from the recommendation information group according to the recommendation information category. By means of the method, device and storage medium for pushing information during a call provided in the embodiments of the present application, the information recommending forms during a call are diversified.