Extraordinary dendrite-free Li deposition on highly uniform facet wrinkled Cu substrates in carbonate electrolytes
- Authors
- Kim, Ju Ye; Chae, Oh B.; Wu, Mihye; Lim, Eunsoo; Kim, Gukbo; Hong, Yu Jin; Jung, Woo-Bin; Choi, Sungho; Kim, Do Youb; Gereige, Issam; Suk, Jungdon; Kang, Yongku; Jung, Hee-Tae
- Issue Date
- Apr-2021
- Publisher
- ELSEVIER
- Keywords
- Cu substrate; Uniform facet; Li dendrite; Li-metal battery; Surface pattern control; Carbonate electrolyte
- Citation
- NANO ENERGY, v.82
- Journal Title
- NANO ENERGY
- Volume
- 82
- URI
- https://scholarworks.bwise.kr/gachon/handle/2020.sw.gachon/87364
- DOI
- 10.1016/j.nanoen.2020.105736
- ISSN
- 2211-2855
- Abstract
- Despite much research focused on lithium (Li) metal batteries, an important issue concerning Li-dendrite growth on the anode remains unresolved. The intrinsic mechanism of this Li-dendrite formation is related to the nonuniform distribution of Li-ion flux on the anode in charge/discharge caused by irregular structure and energy of anode surface. Here we report upon dendrite-free Li-deposition in a carbonate-based electrolyte using a novel Cu anode structure with sharp wrinkles and a [100] crystal facet. This uniform Li-deposition resulted in longterm electrochemical cyclability in Li/Cu and LiFePO4/Li cell. Our observations revealed that the wrinkled Cu surface and the unifying [100] crystal facet play important roles in enhancing the uniformity of the Li-ion flux and the adsorption energy of the Li-ions on Cu, respectively. We expect that this study will permit the use of a wide range of wrinkled structures and crystal planes to obtain high-energy and long-term cycles of Li-metal batteries.
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