Direct observation of lithium-ion movement around an in-situ-formed-negative-electrode/solid-state-electrolyte interface during initial charge–discharge reaction

2012 ◽  
Vol 20 ◽  
pp. 113-116 ◽  
Author(s):  
Kazuo Yamamoto ◽  
Yasutoshi Iriyama ◽  
Toru Asaka ◽  
Tsukasa Hirayama ◽  
Hideki Fujita ◽  
...  
Keyword(s):  
Solid State ◽  
Direct Observation ◽  
Negative Electrode ◽  
Lithium Ion ◽  
Solid State Electrolyte ◽  
Ion Movement ◽  
Electrolyte Interface ◽  
Initial Charge ◽  
Charge Discharge

scholarly journals In-situ visualization of the space-charge-layer effect on interfacial lithium-ion transport in all-solid-state batteries

2020 ◽  
Vol 11 (1) ◽  
Author(s):  
Longlong Wang ◽  
Ruicong Xie ◽  
Bingbing Chen ◽  
Xinrun Yu ◽  
Jun Ma ◽  
...  
Keyword(s):  
Solid State ◽  
Ion Transport ◽  
Space Charge ◽  
Lithium Ion ◽  
Space Charge Layer ◽  
High Rate ◽  
Charge Layer ◽  
Electrolyte Interface ◽  
In Situ Visualization

AbstractThe space charge layer (SCL) is generally considered one of the origins of the sluggish interfacial lithium-ion transport in all-solid-state lithium-ion batteries (ASSLIBs). However, in-situ visualization of the SCL effect on the interfacial lithium-ion transport in sulfide-based ASSLIBs is still a great challenge. Here, we directly observe the electrode/electrolyte interface lithium-ion accumulation resulting from the SCL by investigating the net-charge-density distribution across the high-voltage LiCoO2/argyrodite Li6PS5Cl interface using the in-situ differential phase contrast scanning transmission electron microscopy (DPC-STEM) technique. Moreover, we further demonstrate a built-in electric field and chemical potential coupling strategy to reduce the SCL formation and boost lithium-ion transport across the electrode/electrolyte interface by the in-situ DPC-STEM technique and finite element method simulations. Our findings will strikingly advance the fundamental scientific understanding of the SCL mechanism in ASSLIBs and shed light on rational electrode/electrolyte interface design for high-rate performance ASSLIBs.

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