scholarly journals Lithium Dendrites: Inside or Outside: Origin of Lithium Dendrite Formation of All Solid‐State Electrolytes (Adv. Energy Mater. 40/2019)

2019 ◽  
Vol 9 (40) ◽  
pp. 1970155
Author(s):  
Fangjie Mo ◽  
Jiafeng Ruan ◽  
Shuxian Sun ◽  
Zixuan Lian ◽  
Sangpu Yang ◽  
...  
Keyword(s):  
Solid State ◽  
Dendrite Formation ◽  
Lithium Dendrites ◽  
Solid State Electrolytes ◽  
Lithium Dendrite ◽  
Energy Mater

Inside or Outside: Origin of Lithium Dendrite Formation of All Solid‐State Electrolytes

2019 ◽  
Vol 9 (40) ◽  
pp. 1902123 ◽  
Author(s):  
Fangjie Mo ◽  
Jiafeng Ruan ◽  
Shuxian Sun ◽  
Zixuan Lian ◽  
Sangpu Yang ◽  
...  
Keyword(s):  
Solid State ◽  
Dendrite Formation ◽  
Solid State Electrolytes ◽  
Lithium Dendrite

scholarly journals Visualizing Lithium Dendrite Formation within Solid-State Electrolytes

2021 ◽  
Vol 6 (2) ◽  
pp. 451-458
Author(s):  
Minghao Sun ◽  
Tiefeng Liu ◽  
Yifei Yuan ◽  
Min Ling ◽  
Nan Xu ◽  
...  
Keyword(s):  
Solid State ◽  
Dendrite Formation ◽  
Solid State Electrolytes ◽  
Lithium Dendrite

scholarly journals Blocking Lithium Dendrite Growth in Solid-State Batteries with an Ultrathin Amorphous Li-La-Zr-O Solid Electrolyte

2021 ◽  
Author(s):  
Jordi Sastre ◽  
Moritz Futscher ◽  
Lea Pompizi ◽  
Abdessalem Aribia ◽  
Agnieszka Priebe ◽  
...  
Keyword(s):  
Solid State ◽  
Electronic Conductivity ◽  
High Capacity ◽  
External Pressure ◽  
Lithium Metal ◽  
Metallic Lithium ◽  
Lithium Dendrites ◽  
Lithium Garnet ◽  
Solid State Batteries ◽  
Lithium Dendrite

Abstract Lithium metal dendrites have become a roadblock in the realization of next-generation solid-state batteries with lithium metal as high-capacity anode. The presence of surface and bulk inhomogeneities with non-negligible electronic conductivity in crystalline electrolytes such as the lithium garnet Li7La3Zr2O12 (LLZO) facilitates the growth of lithium filaments, posing a critical safety risk. Here we explore the amorphous phase of LLZO (aLLZO) as a lithium dendrite shield owing to its grain-boundary-free microstructure, stability against metallic lithium, and high electronic insulation. We demonstrate that by tuning the lithium stoichiometry in sputtered aLLZO films, the ionic conductivity can be increased up to 10-7 S cm-1 while retaining an ultralow electronic conductivity of 10-14 S cm-1. In Li/aLLZO/Li symmetric cells, plating-stripping results in no degradation of the films and current densities up to 3.2 mA cm-2 can be applied with no signs of lithium penetration. The defect-free and conformal nature of the films enables microbatteries with an electrolyte thickness as low as 70 nm, which withstand charge-discharge at 0.2 mA cm-2 for over 500 cycles. Finally, we demonstrate that the application of aLLZO as a coating on crystalline LLZO lowers the interface resistance and significantly impedes the formation of lithium dendrites, increasing the critical current density of a symmetric cell up to 1.3 mA cm-2 at room temperature and without external pressure. The effectiveness of the amorphous Li-La-Zr-O as lithium dendrite blocking layer can accelerate the development of more powerful and safer solid-state batteries.

Modifying an ultrathin insulating layer to suppress lithium dendrite formation within garnet solid electrolytes

2021 ◽  
Author(s):  
Shijun Tang ◽  
Gui-Wei Chen ◽  
Fucheng Ren ◽  
Hongchun Wang ◽  
Wu Yang ◽  
...  
Keyword(s):  
Solid State ◽  
Solid Electrolytes ◽  
Electronic Conductivity ◽  
Practical Application ◽  
Insulating Layer ◽  
Dendrite Formation ◽  
Lithium Dendrite

The electronic conductivity of solid electrolytes, which plays an important role in inducing Li dendrite deposition, is a key obstacle to the practical application of Li metal to all-solid-state lithium...

scholarly journals Solid‐State Electrolytes: Revealing the Short‐Circuiting Mechanism of Garnet‐Based Solid‐State Electrolyte (Adv. Energy Mater. 21/2019)

2019 ◽  
Vol 9 (21) ◽  
pp. 1970076 ◽  
Author(s):  
Yongli Song ◽  
Luyi Yang ◽  
Wenguang Zhao ◽  
Zijian Wang ◽  
Yan Zhao ◽  
...  
Keyword(s):  
Solid State ◽  
Solid State Electrolyte ◽  
Solid State Electrolytes ◽  
Energy Mater

scholarly journals Tuning the electrolyte network structure to invoke quasi-solid state sulfur conversion and suppress lithium dendrite formation in Li–S batteries

Nature Energy ◽  
2018 ◽  
Vol 3 (9) ◽  
pp. 783-791 ◽  
Author(s):  
Quan Pang ◽  
Abhinandan Shyamsunder ◽  
Badri Narayanan ◽  
Chun Yuen Kwok ◽  
Larry A. Curtiss ◽  
...  
Keyword(s):  
Solid State ◽  
Network Structure ◽  
Dendrite Formation ◽  
Lithium Dendrite

scholarly journals Blocking Lithium Dendrite Growth in Solid-State Batteries with an Ultrathin Amorphous Li-La-Zr-O Solid Electrolyte

2021 ◽  
Author(s):  
Jordi Sastre ◽  
Moritz H. Futscher ◽  
Lea Pompizi ◽  
Abdessalem Aribia ◽  
Agnieszka Priebe ◽  
...  
Keyword(s):  
Solid State ◽  
Electronic Conductivity ◽  
High Capacity ◽  
External Pressure ◽  
Lithium Metal ◽  
Metallic Lithium ◽  
Lithium Dendrites ◽  
Lithium Garnet ◽  
Solid State Batteries ◽  
Lithium Dendrite

Lithium metal dendrites have become a roadblock in the realization of next-generation solid-state batteries with lithium metal as high-capacity anode. The presence of surface and bulk inhomogeneities with non-negligible electronic conductivity in crystalline electrolytes such as the lithium garnet Li<sub>7</sub>La<sub>3</sub>Zr<sub>2</sub>O<sub>12</sub> (LLZO) facilitates the growth of lithium filaments, posing a critical safety risk. Here we explore the amorphous phase of LLZO (aLLZO) as a lithium dendrite shield owing to its grain-boundary-free microstructure, stability against metallic lithium, and high electronic insulation. We demonstrate that by tuning the lithium stoichiometry in sputtered aLLZO films, the ionic conductivity can be increased up to 10<sup>-7</sup> S cm<sup>-1</sup> while retaining an ultralow electronic conductivity of 10<sup>-14</sup> S cm<sup>-1</sup>. In Li/aLLZO/Li symmetric cells, plating-stripping results in no degradation of the films and current densities up to 3.2 mA cm<sup>-2</sup> can be applied with no signs of lithium penetration. The defect-free and conformal nature of the films enables microbatteries with an electrolyte thickness as low as 70 nm, which withstand charge-discharge at 0.2 mA cm<sup>-2</sup> for over 500 cycles. Finally, we demonstrate that the application of aLLZO as a coating on crystalline LLZO lowers the interface resistance and significantly impedes the formation of lithium dendrites, increasing the critical current density of a symmetric cell up to 1.3 mA cm<sup>-2</sup> at room temperature and without external pressure. The effectiveness of the amorphous Li-La-Zr-O as lithium dendrite blocking layer can accelerate the development of more powerful and safer solid-state batteries.<div></div>

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