Dendrite-Free Lithium Deposition with Self-Aligned Nanorod Structure

Journal Article · Wed Dec 10 04:00:00 EST 2014 · Nano Letters, 14(12):6889-6896

DOI:https://doi.org/10.1021/nl5039117· OSTI ID:1166878

Zhang, Yaohui; Qian, Jiangfeng; Xu, Wu; Russell, Selena M.; Chen, Xilin; Nasybulin, Eduard; Bhattacharya, Priyanka; Engelhard, Mark H.; Mei, Donghai; Cao, Ruiguo; Ding, Fei; Cresce, Arthur V.; Xu, Kang; Zhang, Jiguang

Suppressing lithium (Li) dendrite growth is one of the most critical challenges for the development of Li metal batteries. We recently proposed a novel self-healing electrostatic shield (SHES) mechanism which can fundamentally change the Li deposition behavior and lead to the growth of dendrite-free Li films. Here, we report for the first time that the as-deposited dendrite-free Li films grown with assistance of SHES additive are actually composed of highly-aligned and compacted Li nanorods with hemispherical tips. Both surface and cross sectional morphology evolution of the Li films during repeated Li deposition/stripping processes were systematically investigated. A new model has been established to explain the formation and evolution of the Li nanorods. A fundamental understanding on the internal structure and evolution of Li metal films may lead to new approaches to stabilize the long term cycling stability of Li metal anode.

• Research Organization: Pacific Northwest National Laboratory (PNNL), Richland, WA (US), Environmental Molecular Sciences Laboratory (EMSL)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC05-76RL01830
• OSTI ID: 1166878
• Report Number(s): PNNL-SA-101189; 48164; KC0208010
• Journal Information: Nano Letters, 14(12):6889-6896, Journal Name: Nano Letters, 14(12):6889-6896
• Country of Publication: United States
• Language: English

Related Subjects

Dendrite-free
Electrodeposition
Environmental Molecular Sciences Laboratory
Li dendrite
Li metal anode
nanorods