The invention relates to a positive electrode active material for a sodium ion battery, a sodium ion battery prepared from the active material, a battery module, a battery pack and a device. A negative electrode active material in a negative electrode active material layer of the negative electrode plate of the sodium ion battery comprises hard carbon, a positive electrode active material in a positive electrode active material layer of the positive electrode plate of the sodium ion battery mainly comprises an O3-phase layered metal oxide, and the O3-phase layered metal oxide has the following molecular formula: NaaMbNicFedMneO2 +/-delta (formula I), m is a metal cation different from Ni, Fe and Mn; 0.67 lt; 0.67 lt; a < lt >; 1.1; 1.1; 0 lt; blt; 0.25, preferably 0.05 lt; blt; 0.15, 0.15; 0 lt; clt; ct; 0.3, preferably 0.05 lt; clt; ct; 0.25%; 0 lt; b + clt; 0.55% of the total weight; 0.45 lt, 0.45 lt; d + ilt; 1; b + c + d + e < = 1; 0 < = delta < = 0.1, and the metal cation is selected from one of Li < + >, Cu < 2 + >, Zn < 2 + >, Co < 2 + > and Ti < 4 + >.
本申请涉及钠离子电池用正极活性材料、由该活性材料制成的钠离子电池、电池模块、电池包及装置。所述钠离子电池的负极极片的负极活性材料层中的负极活性材料包括硬碳,并且所述钠离子电池的正极极片的正极活性材料层中的正极活性材料主要包含O3相层状金属氧化物,所述O3相层状金属氧化物具有如下分子式:NaaMbNicFedMneO2±δ(式I)式I中,M为不同于Ni、Fe和Mn的金属阳离子;0.67<0.55;0.45<1;且b+c+d+e≤1;0≤δ≤0.1,其中,所述金属阳离子是选自Li+、Cu2+、Zn2+、Co2+、Ti4+中的一者。
Positive electrode active material for sodium-ion battery, sodium-ion battery prepared from active material, battery module, battery pack and device
钠离子电池用正极活性材料、由该活性材料制成的钠离子电池、电池模块、电池包及装置
2025-04-11
Patent
Electronic Resource
Chinese
IPC: | B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / H01M Verfahren oder Mittel, z.B. Batterien, für die direkte Umwandlung von chemischer in elektrische Energie , PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY |
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