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Li2O‑Reinforced Cu Nanoclusters as Porous Structure for Dendrite-Free and Long-Lifespan Lithium Metal Anode
journal contribution
posted on 2016-09-20, 00:00 authored by Zhenggang Zhang, Xiaoyue Xu, Shuwei Wang, Zhe Peng, Meng Liu, Jingjing Zhou, Cai Shen, Deyu WangA nanostructured
protective structure, pillared by the copper nanoclusters and in situ
filled with lithium oxide in the interspace, is constructed to efficiently
improve the cyclic stability and lifetime of lithium metal electrodes.
The porous structure of copper nanoclusters enables high specific
surface area, locally reduced current density, and dendrite suppressing,
while the filled lithium oxide leads to the structural stability and
largely extends the electrode lifespan. As a result of the synergetic
protection of the proposed structure, lithium metal could be fully
discharged with efficiency ∼97% for more than 150 cycles in
corrosive alkyl carbonate electrolytes, without dendrite formation.
This approach opens a novel route to improve the cycling stability
of lithium metal electrodes with the appropriate protective structure.