A Ni-rich layered cathode, Li[Ni 0.885 Co 0.100 Al 0.015 ]O 2 (NCA89), was compositionally modified to demonstrate that multiple doping can effectively stabilize the delithiated structure. Incorporation of B and Ga into the cathode substantially improved the cycling stability of the NCA89 cathode. The 0.25 mol% B– and 0.75- mol% Ga– doped NCA89 cathode retained 91.7% of its initial capacity after 100 cycles while delivering a discharge capacity of 222.2 mAh g −1 at 0.1 C, whereas the pristine NCA89 cathode retained only 79.4% of its initial capacity. The multi-doped cathode exhibited excellent long-term cycling stability; it retained 83.4% of the initial capacity after 500 cycles compared to the P-NCA89 cathode that retained only 62.4%. We attributed the improved cycling stability to the incorporation of B, which modified the surface energy to produce a highly aligned microstructure conducive to relieving anisotropic internal strain...

中文翻译：

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多掺杂（Ga，B）Li [Ni 0.885 Co 0.100 Al 0.015] O 2阴极

对富镍层状阴极Li [Ni 0.885 Co 0.100 Al 0.015] O 2（NCA89）进行了成分修饰，以表明多次掺杂可以有效地稳定去锂化的结构。将B和Ga掺入阴极中大大改善了NCA89阴极的循环稳定性。掺杂0.25 mol％B-和0.75 mol％Ga的NCA89阴极在100次循环后仍保持其初始容量的91.7％，而在0.1 C下的放电容量为222.2 mAh g -1，而原始NCA89阴极仅保留79.4％的初始容量。多掺杂阴极表现出优异的长期循环稳定性。500次循环后，它保留了83.4％的初始容量，而P-NCA89阴极仅保留了62.4％。我们将改善的循环稳定性归因于B的结合，