context: The calculated diffusion coefficient of Zn2+ was of the order of 10−9–10−10 cm−2 s−1 (Fig. 4f), which is comparable to that of the reported V-based materials (Table S3†). These results clearly demonstrate that the NV NSs@ACC cathode allows the stable and fast migration of Zn2+, leading to good rate capability.
answer: NV NSs@ACC