Novel LixSiSy/Nafion as an artificial SEI film to enable dendrite-free Li metal anodes and high stability Li–S batteries

2020 ◽  
Vol 8 (18) ◽  
pp. 8979-8988 ◽  
Author(s):  
Qi Jin ◽  
Xitian Zhang ◽  
Hong Gao ◽  
Lu Li ◽  
Zhiguo Zhang
Keyword(s):  
High Stability ◽  
Composite Layer ◽  
Metal Anode ◽  
Sei Film ◽  
Li Metal Anode ◽  
The Stability ◽  
Metal Anodes

We propose an approach for Li metal anode protection by in situ growth of a LixSiSy/Nafion composite layer on the surface of the Li metal as an artificial SEI film to significantly enhance the stability of the Li metal anode.

Stable artificial solid electrolyte interphase films for lithium metal anode via metal–organic frameworks cemented by polyvinyl alcohol

2020 ◽  
Vol 8 (1) ◽  
pp. 251-258 ◽  
Author(s):  
Lishuang Fan ◽  
Zhikun Guo ◽  
Yu Zhang ◽  
Xian Wu ◽  
Chenyang Zhao ◽  
...  
Keyword(s):  
Polyvinyl Alcohol ◽  
Metal Organic Framework ◽  
Solid Electrolyte Interphase ◽  
Lithium Metal ◽  
Metal Anode ◽  
Lithium Metal Anode ◽  
Sei Film ◽  
Metal Organic ◽  
Li Metal Anode ◽  
The Stability

Polyvinyl alcohol (PVA) as a “glue” to cement the metal organic framework (Zn-MOF) sheet as a reasonable artificial SEI film. The artificial SEI film can efficiently adapt to the changes of the volume during the cycle, significantly improve the stability of the Li metal anode.

Zipper-Inspired SEI Film for Remarkably Enhancing the Stability of Li Metal Anode via Nucleation Barriers Controlled Weaving of Lithium Pits

2018 ◽  
Vol 8 (21) ◽  
pp. 1800650 ◽  
Author(s):  
Dong Wang ◽  
Chen Luan ◽  
Wei Zhang ◽  
Xiaofei Liu ◽  
Lianshan Sun ◽  
...  
Keyword(s):  
Metal Anode ◽  
Sei Film ◽  
Li Metal Anode ◽  
The Stability

scholarly journals Dendrite-Free and Stable Lithium Metal Battery Achieved by a Model of Stepwise Lithium Deposition and Stripping

2021 ◽  
Vol 13 (1) ◽  
Author(s):  
Tiancun Liu ◽  
Jinlong Wang ◽  
Yi Xu ◽  
Yifan Zhang ◽  
Yong Wang
Keyword(s):  
Reduction Method ◽  
Coulombic Efficiency ◽  
List Type ◽  
Lithium Metal ◽  
Metal Anode ◽  
In Situ Raman ◽  
Unique Model ◽  
Li Metal Anode ◽  
Pyridinic N

Highlights A facile method is adopted to obtain cucumber-like lithiophilic composite skeleton. Massive lithiophilic sites in cucumber-like lithiophilic composite skeleton can promote and guide uniform Li depositions. A unique model of stepwise Li deposition and stripping is determined. Abstract The uncontrolled formation of lithium (Li) dendrites and the unnecessary consumption of electrolyte during the Li plating/stripping process have been major obstacles in developing safe and stable Li metal batteries. Herein, we report a cucumber-like lithiophilic composite skeleton (CLCS) fabricated through a facile oxidation-immersion-reduction method. The stepwise Li deposition and stripping, determined using in situ Raman spectra during the galvanostatic Li charging/discharging process, promote the formation of a dendrite-free Li metal anode. Furthermore, numerous pyridinic N, pyrrolic N, and CuxN sites with excellent lithiophilicity work synergistically to distribute Li ions and suppress the formation of Li dendrites. Owing to these advantages, cells based on CLCS exhibit a high Coulombic efficiency of 97.3% for 700 cycles and an improved lifespan of 2000 h for symmetric cells. The full cells assembled with LiFePO4 (LFP), SeS2 cathodes and CLCS@Li anodes demonstrate high capacities of 110.1 mAh g−1 after 600 cycles at 0.2 A g−1 in CLCS@Li|LFP and 491.8 mAh g−1 after 500 cycles at 1 A g−1 in CLCS@Li|SeS2. The unique design of CLCS may accelerate the application of Li metal anodes in commercial Li metal batteries.

Cotton pad derived 3D lithiophilic carbon host for robust Li metal anode: In-situ generated ionic conductive Li3N protective decoration

2021 ◽  
pp. 132722
Author(s):  
Chengyi Lu ◽  
Meng Tian ◽  
Xiangjun Zheng ◽  
Chaohui Wei ◽  
Mark H. Rummeli ◽  
...  
Keyword(s):  
Metal Anode ◽  
Li Metal Anode

AlF3-Modified carbon nanofibers as a multifunctional 3D interlayer for stable lithium metal anodes

2018 ◽  
Vol 54 (60) ◽  
pp. 8347-8350 ◽  
Author(s):  
Cheng Guo ◽  
Huijun Yang ◽  
Ahmad Naveed ◽  
Yanna Nuli ◽  
Jun Yang ◽  
...  
Keyword(s):  
Carbon Nanofibers ◽  
Lithium Metal ◽  
Metal Anode ◽  
Lithium Metal Anodes ◽  
Li Metal Anode ◽  
Metal Anodes

A versatile interlayer in which AlF3 particles are embedded within carbon nanofibers is reported to stabilize the Li metal anode.

In-situ coating of lithiophilic interphase on a biporous Cu scaffold with vertical microchannels for dendrite-free Li metal batteries

2021 ◽  
Author(s):  
Li-Min Wang ◽  
Xiaokuan Ban ◽  
Zongzi Jin ◽  
Ranran Peng ◽  
Chusheng Chen ◽  
...  
Keyword(s):  
Volume Change ◽  
Coulombic Efficiency ◽  
Dendrite Growth ◽  
Porous Scaffolds ◽  
Effective Strategy ◽  
Practical Application ◽  
Metal Anode ◽  
Li Metal Anode ◽  
In Situ Coating

Severe dendrite growth, low Coulombic efficiency and huge volume change have impeded the practical application of Li metal anode, and the construction of porous scaffolds is an effective strategy to...

scholarly journals Dendrite formation in Li-metal anodes: an atomistic molecular dynamics study

RSC Advances ◽  
2019 ◽  
Vol 9 (48) ◽  
pp. 27835-27848 ◽  
Author(s):  
Luis A. Selis ◽  
Jorge M. Seminario
Keyword(s):  
Molecular Dynamics ◽  
Metal Anode ◽  
Dendrite Formation ◽  
Lithium Dendrites ◽  
Li Metal Anode ◽  
Metal Anodes

Lithium dendrites (blue) growing through the cracks of a SEI (orange) covering a Li-metal anode (blue) while lithiation by Li-ions (purple). The electrolyte is not shown.

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.

Dendrite-free lithium metal anodes: stable solid electrolyte interphases for high-efficiency batteries

2015 ◽  
Vol 3 (14) ◽  
pp. 7207-7209 ◽  
Author(s):  
Xin-Bing Cheng ◽  
Qiang Zhang
Keyword(s):  
Solid Electrolyte ◽  
High Efficiency ◽  
Lithium Metal ◽  
Metal Anode ◽  
Lithium Metal Batteries ◽  
Sei Film ◽  
Lithium Metal Anodes ◽  
Li Metal Anode ◽  
Utilization Ratio ◽  
Superior Cycling Stability

A more superior cycling stability and a higher utilization ratio of the Li metal anode have been achieved by additive- and nanostructure-stabilized SEI layers. A profound understanding of the composition, internal structure, and evolution of the SEI film sheds new light on dendrite-free high-efficiency lithium metal batteries.

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