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P-O共价键对三元高镍正极的改性
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Abstract:
强P-O共价键构成的框架结构带来突出的稳定性,能有效的对三元高镍正极表面进行保护，可以有效的降低正极的界面阻抗，通过缓解表面相变降低电荷转移阻抗。在基于锂金属组装的电池，改性的正极发挥出高达204 mAh/g的比容量，且倍率性能也得到了很大的提升。
The framework structure composed of strong P-O covalent bonds brings outstanding stability and can effectively protect the ternary high nickel cathode surface, which can effectively reduce the interfacial impedance of the cathode and lower the charge transfer impedance by mitigating the surface phase transition. In lithium metal-based assembled batteries, the modified cathode exerts a specific capacity of up to 204 mAh/g, and the multiplicative performance is greatly improved.
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