Lithium Metal Protection Dendrite Mitigation

Lithium Metal Protection Dendrite Mitigation

Lithium metal could be the ultimate anode electrode for the high energy rechargeable battery. However, electrochemical deposition of lithium metal creates dendritic and mossy lithium, shorten battery life and worsen safety. We explore modulation of lithium deposition and lithium surface passivation to improve lithium metal electrode. 

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Controlled Lithium Nucleation

Controlled Lithium Nucleation 

Schematic of controlled lithium nucleation
This work has reported a simple but effective strategy to induce controlled Li deposition using Alq3/Cu electrode. Organometallic Alq3 provides robust and discrete units of Al as an effective Li nucleation sites. Benefits include good electrochemical stability, easy manufacturing, and enhanced structure integrity. The strategy is validated by superior coulombic efficiency (CE) and smoother Li deposition morphology obtained for the Alq3/Cu electrode.

Cover of Batteries Supercaps JournalReferences

Zhong, H. X.; Zhao, Y. Z.; Zhang, T; Liu, G., Controlled Lithium Deposition on Alq(3) Coated Substrate. Batteries Supercaps 2021, 4 (1), 98-105.

Park, H.;  Tamwattana, O.;  Kim, J.;  Buakeaw, S.;  Hongtong, R.;  Kim, B.;  Khomein, P.;  Liu, G.;  Meethong, N.; Kang, K., Probing Lithium Metals in Batteries by Advanced Characterization and Analysis Tools. Adv. Energy Mater. 2021, 11 (15), 18.

 

New Electrolyte to Stabilized Lithium Deposition

New Electrolyte to Stabilized Lithium Deposition

molecular structure of fluorocarbon ethylene oxides with different chain length denotated as F8EO4 and F4EO2 respectively.
Molecular structure of fluorocarbon ethylene oxides with different chain length denotated as F8EO4 and F4EO2 respectively.
Voltage profiles for Li plating/stripping test under various conditions
Voltage profiles for Li plating/stripping test under various conditions: (a) 0.5mA/cm2 current density and 0.5mAh/cm2 deposition capacity; (b) 1.0mA/cm2 current density and 1.0mAh/cm2 deposition capacity (c) 2.0 mA/cm2 current density and 2.0 mAh/cm2 deposition capacity; (d-f) SEM images (3000××,  magnification) of deposited surfaces at various current density and constant 1.0mAh/cm2 deposition capacity.

 

Featured Publications

Zhong, Haoxiang, Yangzhi Zhao, , Ting Zhang, and Gao Liu."Controlled Lithium Deposition on Alq 3 Coated Substrate."Batteries & Supercaps 4.1 (2021) 5 - 5. DOI
Park, Hyeokjun, Orapa Tamwattana, Jihyeon Kim, Sunisa Buakeaw, Rattiya Hongtong, Byunghoon Kim, Piyachai Khomein, Gao Liu, Nonglak Meethong, and Kisuk Kang."Probing Lithium Metals in Batteries by Advanced Characterization and Analysis Tools."Advanced Energy Materials 11.15 (2021) 2003039. DOI
Zhao, Yangzhi, Chen Fang, , Guangzhao Zhang, Dion Hubble, Asritha Nallapaneni, Chenhui Zhu, Zhuowen Zhao, Zhimeng Liu, Jonathan Lau, Yanbao Fu, and Gao Liu."A Micelle Electrolyte Enabled by Fluorinated Ether Additives for Polysulfide Suppression and Li Metal Stabilization in Li-S Battery."Frontiers in Chemistry 8 (2020). DOI