scholarly journals Elucidating Interfacial Stability between Lithium Metal Anode and Li Phosphorus Oxynitride via In Situ Electron Microscopy

Nano Letters ◽  
2020 ◽  
Author(s):  
Zachary D. Hood ◽  
Xi Chen ◽  
Robert L. Sacci ◽  
Xiaoming Liu ◽  
Gabriel M. Veith ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Interfacial Stability ◽  
Lithium Metal ◽  
Metal Anode ◽  
Lithium Metal Anode ◽  
In Situ Electron Microscopy

scholarly journals Elucidating Interfacial Stability between Lithium Metal Anode and LiPON via In Situ Electron Microscopy

2020 ◽  
Author(s):  
Zachary Hood ◽  
Xi Chen ◽  
Robert Sacci ◽  
Gabriel Veith ◽  
Xiaoming Liu ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Theoretical Calculations ◽  
Coulombic Efficiency ◽  
Interface Layer ◽  
Metal Anode ◽  
Lithium Metal Anode ◽  
In Situ Electron Microscopy ◽  
Electrochemical Window ◽  
The Stability

Abstract Li phosphorus oxynitride (LiPON) is one of a very few solid electrolytes that have demonstrated stability against Li metal, and performed extended cycling with high coulombic efficiency. However, theoretical calculations show that LiPON does react with Li metal. Here, we utilize in situ electron microscopy to directly observe the dynamic evolutions at the LiPON-Li interface upon contacting and under biasing at the nanometer scale. We reveal that a thin interface layer (~60nm) develops at the LiPON-Li interface upon contact. This interface layer is conductive and robust, serving as an effective passivation layer keeping the interface stable over time and under biasing up to 5 V. Our results explicate the excellent cyclability of LiPON and reconciles the existing debates regarding the stability of LiPON-Li interface. This work demonstrates that glassy solid-state electrolytes with a sufficient ionic conductivity, though may not have a perfect initial electrochemical window with Li metal, may excel in future applications for ASSBs.

scholarly journals Artificial dual solid-electrolyte interfaces based on in situ organothiol transformation in lithium sulfur battery

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Wei Guo ◽  
Wanying Zhang ◽  
Yubing Si ◽  
Donghai Wang ◽  
Yongzhu Fu ◽  
...  
Keyword(s):  
Solid Electrolyte ◽  
Interface Reaction ◽  
Interfacial Instability ◽  
Anode Surface ◽  
Commercial Application ◽  
Lithium Metal ◽  
Metal Anode ◽  
Lithium Metal Anode ◽  
Lithium Sulfur

AbstractThe interfacial instability of the lithium-metal anode and shuttling of lithium polysulfides in lithium-sulfur (Li-S) batteries hinder the commercial application. Herein, we report a bifunctional electrolyte additive, i.e., 1,3,5-benzenetrithiol (BTT), which is used to construct solid-electrolyte interfaces (SEIs) on both electrodes from in situ organothiol transformation. BTT reacts with lithium metal to form lithium 1,3,5-benzenetrithiolate depositing on the anode surface, enabling reversible lithium deposition/stripping. BTT also reacts with sulfur to form an oligomer/polymer SEI covering the cathode surface, reducing the dissolution and shuttling of lithium polysulfides. The Li–S cell with BTT delivers a specific discharge capacity of 1,239 mAh g−1 (based on sulfur), and high cycling stability of over 300 cycles at 1C rate. A Li–S pouch cell with BTT is also evaluated to prove the concept. This study constructs an ingenious interface reaction based on bond chemistry, aiming to solve the inherent problems of Li–S batteries.

Stabilize lithium metal anode through in-situ forming a multi-component composite protective layer

2021 ◽  
pp. 129911
Author(s):  
Saisai Li ◽  
Yun Huang ◽  
Wenhao Ren ◽  
Xing Li ◽  
Mingshan Wang ◽  
...  
Keyword(s):  
Protective Layer ◽  
Lithium Metal ◽  
Metal Anode ◽  
In Situ Forming ◽  
Lithium Metal Anode

A multifunctional artificial protective layer for producing an ultra-stable lithium metal anode in a commercial carbonate electrolyte

2021 ◽  
Vol 9 (12) ◽  
pp. 7667-7674
Author(s):  
Song Li ◽  
Xian-Shu Wang ◽  
Qi-Dong Li ◽  
Qi Liu ◽  
Pei-Ran Shi ◽  
...  
Keyword(s):  
Protective Layer ◽  
Stable Cycle ◽  
Lithium Metal ◽  
Lithium Ions ◽  
Metal Anode ◽  
Lithium Metal Anode

A multifunctional artificial protective layer is in situ fabricated on the surface of Li anode, which facilitates stable cycle of Li anode in carbonate electrolyte by forming a unique SEI and inducing homogeneous deposition of lithium ions.

Depressing the irreversible reactions on a three-dimensional interface towards a high-areal capacity lithium metal anode

2019 ◽  
Vol 7 (11) ◽  
pp. 6267-6274 ◽  
Author(s):  
Wei Deng ◽  
Shanshan Liang ◽  
Xufeng Zhou ◽  
Fei Zhao ◽  
Wenhua Zhu ◽  
...  
Keyword(s):  
Three Dimensional ◽  
Lithium Metal ◽  
Current Collectors ◽  
Metal Anode ◽  
Irreversible Reaction ◽  
Conductive Coating ◽  
Lithium Metal Anode ◽  
Li Metal Anode ◽  
Areal Capacity

An ultrathin and conformal ion conductive coating is realized on 3D current collectors for preventing the irreversible reaction between the electrolyte and Li metal, which has been confirmed by in situ optical observation. At the high areal capacity of 10 mA h cm−2 for the Li metal anode, a stable CE of 98.9% for 800 h can be achieved.

scholarly journals New insights into the formation of silicon–oxygen layer on lithium metal anode via in situ reaction with tetraethoxysilane

2021 ◽  
Vol 56 ◽  
pp. 14-22
Author(s):  
Yang Luo ◽  
Tianyu Li ◽  
Hongzhang Zhang ◽  
Ying Yu ◽  
Arshad Hussain ◽  
...  
Keyword(s):  
Lithium Metal ◽  
Oxygen Layer ◽  
Metal Anode ◽  
In Situ Reaction ◽  
Lithium Metal Anode ◽  
Silicon Oxygen

In-situ organic SEI layer for dendrite-free lithium metal anode

2020 ◽  
Vol 27 ◽  
pp. 69-77 ◽  
Author(s):  
Danmiao Kang ◽  
Saydual Sardar ◽  
Rui Zhang ◽  
Hart Noam ◽  
Jingyun Chen ◽  
...  
Keyword(s):  
Lithium Metal ◽  
Metal Anode ◽  
Sei Layer ◽  
Lithium Metal Anode

Covalent organic framework-based ultrathin crystalline porous film: manipulating uniformity of fluoride distribution for stabilizing lithium metal anode

2020 ◽  
Vol 8 (6) ◽  
pp. 3459-3467 ◽  
Author(s):  
Zedong Zhao ◽  
Wuji Chen ◽  
Sarawoot Impeng ◽  
Mengxiong Li ◽  
Rong Wang ◽  
...  
Keyword(s):  
Porous Film ◽  
Lithium Metal ◽  
Metal Anode ◽  
Covalent Organic Framework ◽  
Lithium Metal Anode ◽  
Fluoride Distribution ◽  
Organic Framework

In situ formed LiF grains are confined and evenly distributed throughout a covalent organic framework (COF) film, which exhibits cooperative effectiveness to greatly stabilize the lithium metal.

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