Xu F, Qu C, Lu Q, Meng J, Zhang X, Xu X, Qiu Y, Ding B, Yang J, Cao F, Yang P, Jiang G, Kaskel S, Ma J, Li L, Zhang X, Wang H (2022)
Publication Type: Journal article
Publication year: 2022
Book Volume: 8
Article Number: eabm7489
Journal Issue: 19
Constructing robust nucleation sites with an ultrafine size in a confined environment is essential toward simultaneously achieving superior utilization, high capacity, and long-term durability in Na metal-based energy storage, yet remains largely unexplored. Here, we report a previously unexplored design of spatially confined atomic Sn in hollow carbon spheres for homogeneous nucleation and dendrite-free growth. The designed architecture maximizes Sn utilization, prevents agglomeration, mitigates volume variation, and allows complete alloying-dealloying with high-affinity Sn as persistent nucleation sites, contrary to conventional spatially exposed large-size ones without dealloying. Thus, conformal deposition is achieved, rendering an exceptional capacity of 16 mAh cm−2 in half-cells and long cycling over 7000 hours in symmetric cells. Moreover, the well-known paradox is surmounted, delivering record-high Na utilization (e.g., 85%) and large capacity (e.g., 8 mAh cm−2) while maintaining extraordinary durability over 5000 hours, representing an important breakthrough for stabilizing Na anode.
APA:
Xu, F., Qu, C., Lu, Q., Meng, J., Zhang, X., Xu, X.,... Wang, H. (2022). Atomic Sn–enabled high-utilization, large-capacity, and long-life Na anode. Science Advances, 8(19). https://doi.org/10.1126/sciadv.abm7489
MLA:
Xu, Fei, et al. "Atomic Sn–enabled high-utilization, large-capacity, and long-life Na anode." Science Advances 8.19 (2022).
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