Effect of nanopatterning on mechanical properties of Lithium anode

Campbell, Colin J.; Lee, Yong Min; Cho, Kuk Young; Lee, Young Gi; Lee, Byeongdu; Phatak, Charudatta; Hong, Seungbum

doi:10.1038/s41598-018-20773-8

Cited by 33 publications

(31 citation statements)

References 26 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…11 More importantly, this value exceeds the elastic modulus of Li metal (1.17 ± 0.55 GPa) much more. 39 The super mechanical property implies that the LiAlO 2 -PVDF layer can suppress the growth of Li dendrites effectively.…”

Section: Resultsmentioning

confidence: 99%

A facile, scalable, high stability Lithium metal anode

Zhao

Chen

Wang

et al. 2022

SusMat

View full text Add to dashboard Cite

Li has garnered enormous attention for next-generation Li metal batteries owing to its remarkable theoretical capacity. Unfortunately, as an anode, Li suffers from serious safety issues and fast capacity fading due to the formation of Li dendrites, which hinders the practical application of Li anode. Herein, a LiAlO 2 -PVDF composite modification layer is fabricated on the surface of Li metal to enhance its stability and electrochemical performance. Benefitting from the synergetic effects of high Li + conductivity, high Li + transference number, excellent mechanical properties, superior chemical durability, and compactness of the modification layer, the LiAlO 2 -PVDF@Li electrode delivers an ultra-long lifespan and a high capacity retention rate in the LiAlO 2 -PVDF@Li│LiFePO 4 full cell. The proposed strategy provides a new alternative anode for Li metal batteries with high performance and scalable production.

show abstract

Section: Resultsmentioning

confidence: 99%

A facile, scalable, high stability Lithium metal anode

Zhao

Chen

Wang

et al. 2022

SusMat

View full text Add to dashboard Cite

show abstract

“…[13,14] To address this problem, recent studies have focused on the mechanical properties of lithium metal, seeking to understand the dendrite penetration mechanism within the electrolyte. [15][16][17][18][19] In this context, Masias et al measured the Young's modulus, the shear modulus and the Poisson's ratio of lithium metal at room temperature. [15] Their findings shows that Li exhibits a yield strength of about 0.8 MPa, in accordance with former work by Tariq et al, [16] over which the metal starts creeping.…”

Section: Introductionmentioning

confidence: 99%

Stack Pressure Considerations for Room‐Temperature All‐Solid‐State Lithium Metal Batteries

Doux

Nguyen

Tan

et al. 2019

Advanced Energy Materials

414

406

View full text Add to dashboard Cite

All-solid-state batteries are expected to enable batteries with high energy density with the use of lithium metal anodes. Although solid electrolytes are believed to be mechanically strong enough to prevent lithium dendrites from propagating, various reports today still show cell failure due to lithium dendritic growth at room temperature. While cell parameters such as current density, electrolyte porosity and interfacial properties have been investigated, mechanical properties of lithium metal and the role of applied stack pressure on the shorting behavior is still poorly understood. Here, we investigated failure mechanisms of lithium metal in all-solid-state batteries as a function of stack pressure, and conducted in situ characterization of the interfacial and morphological properties of the buried lithium in solid electrolytes. We found that a low stack pressure of 5 MPa allows reliable plating and stripping in a lithium symmetric cell for more than 1000 hours, and a Li | Li6PS5Cl | LiNi0.80Co0.15Al0.05O2 full cell, plating more than 4 µm of lithium per charge, is able to cycle over 200 cycles at room temperature. These results suggest the possibility of enabling the lithium metal anode in all-solid-state batteries at reasonable stack pressures.

show abstract

“…Therefore, the mechanical overpotential discourages continued growth at asperities and smooths out morphology ( Zhang et al., 2019 ). Finally, applied pressure may also affect Li material properties by inducing creep ( Zhang et al., 2020 ) and residual strain ( Rodriguez et al., 2020 ; Campbell et al., 2018 ; Lu et al., 2018 ; Kushima et al., 2017 ; Cho et al., 2020 ; Herbert et al., 2018 ) or by influencing SEI reactions ( Harrison et al., 2017 ).…”

Section: Introductionmentioning

confidence: 99%

Cryogenic electron microscopy reveals that applied pressure promotes short circuits in Li batteries

et al. 2021

View full text Add to dashboard Cite

Summary Li metal anodes are enticing for batteries due to high theoretical charge storage capacity, but commercialization is plagued by dendritic Li growth and short circuits when cycled at high currents. Applied pressure has been suggested to improve morphology, and therefore performance. We hypothesized that increasing pressure would suppress dendritic growth at high currents. To test this hypothesis, here, we extensively use cryogenic scanning electron microscopy to show that varying the applied pressure from 0.01 to 1 MPa has little impact on Li morphology after one deposition. We show that pressure improves Li density and preserves Li inventory after 50 cycles. However, contrary to our hypothesis, pressure exacerbates dendritic growth through the separator, promoting short circuits. Therefore, we suspect Li inventory is better preserved in cells cycled at high pressure only because the shorts carry a larger portion of the current, with less being carried by electrochemical reactions that slowly consume Li inventory.

show abstract

Effect of nanopatterning on mechanical properties of Lithium anode

Cited by 33 publications

References 26 publications

A facile, scalable, high stability Lithium metal anode

A facile, scalable, high stability Lithium metal anode

Stack Pressure Considerations for Room‐Temperature All‐Solid‐State Lithium Metal Batteries

Cryogenic electron microscopy reveals that applied pressure promotes short circuits in Li batteries

Contact Info

Product

Resources

About