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-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.

A 3D mixed ion/electron conducting scaffold by in-situ conversion for long-life lithium metal anodes

Nanoscale ◽  
2021 ◽  
Author(s):  
Huai Jiang ◽  
Qingyuan Dong ◽  
Maohui Bai ◽  
Furong Qin ◽  
Maoyi Yi ◽  
...  
Keyword(s):  
Anode Material ◽  
Volume Change ◽  
Specific Energy ◽  
Dendrite Growth ◽  
Commercial Application ◽  
Lithium Metal ◽  
Lithium Metal Anodes ◽  
Long Life ◽  
Metal Anodes

Lithium (Li) metal is widely considered as the most promising anode material because of ultrahigh specific energy. However, obvious volume change and uncontrollable dendrite growth hinder its commercial application. Herein,...

Boron additive passivated carbonate electrolytes for stable cycling of 5 V lithium–metal batteries

2019 ◽  
Vol 7 (2) ◽  
pp. 594-602 ◽  
Author(s):  
Hongyun Yue ◽  
Yange Yang ◽  
Yan Xiao ◽  
Zhiyuan Dong ◽  
Shuguo Cheng ◽  
...  
Keyword(s):  
High Voltage ◽  
Dendrite Growth ◽  
Lithium Metal ◽  
Metal Anode ◽  
Lithium Metal Batteries ◽  
Li Metal Anode ◽  
Oxidation Loss

The limitation of a high-voltage lithium (Li) metal battery lies in the absence of a robust electrolyte that can endure oxidation loss at a high-voltage cathode and suppress the dendrite growth at a Li metal anode.

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

scholarly journals Interfacial Manipulation via In-Situ Grown ZnSe Overlayer toward Highly Reversible Zn Metal Anodes

2021 ◽  
Author(s):  
Xianzhong Yang ◽  
Chao Li ◽  
Zhongti Sun ◽  
Shuai Yang ◽  
Zixiong Shi ◽  
...  
Keyword(s):  
Large Scale ◽  
Coulombic Efficiency ◽  
Low Cost ◽  
Chemical Vapor ◽  
Side Reactions ◽  
Water Penetration ◽  
Metal Anode ◽  
Zn Anode ◽  
Manipulation Strategy

Abstract Zn metal anode has garnered growing scientific and industrial interest owing to its appropriate redox potential, low cost and good safety. Nevertheless, the instability of Zn metal, caused by dendrite formation, hydrogen evolution and side reactions, gives rise to poor electrochemical stability and unsatisfactory cycling life, greatly hampering large-scale utilization. Herein, an in-situ grown ZnSe layer with controllable thickness is crafted over one side of commercial Zn foil via chemical vapor deposition, aiming to achieve optimized interfacial manipulation between aqueous electrolyte/Zn anode. Thus-derived ZnSe overlayer not only prevents water penetration and restricts Zn2+ two-dimensional diffusion, but also homogenizes the electric field at the interface and facilitates favorable (002) plane growth of Zn. As a result, dendrite-free and homogeneous Zn deposition is obtained; side reactions are concurrently inhibited. In consequence, a high Coulombic efficiency of 99.2% and high cyclic stability for 860 cycles at 1.0 mA cm–2 in symmetrical cells is harvested. Meanwhile, when paired with V2O5 cathode, assembled full cell achieves an outstanding initial capacity (200 mAh g–1) and elongated lifespan (a capacity retention of 84% after 1000 cycles) at 5.0 A g–1. Our highly reversible Zn anode enabled by the interfacial manipulation strategy is anticipated to satisfy the demand of industrial and commercial use.

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.

Low-volume-change, dendrite-free lithium metal anodes enabled by lithophilic 3D matrix with LiF-enriched surface

2019 ◽  
Vol 7 (11) ◽  
pp. 6090-6098 ◽  
Author(s):  
Yangyang Feng ◽  
Chaofan Zhang ◽  
Bing Li ◽  
Shizhao Xiong ◽  
Jiangxuan Song
Keyword(s):  
Synergistic Effect ◽  
Volume Change ◽  
Three Dimensional ◽  
Lithium Metal ◽  
Metal Anode ◽  
3D Matrix ◽  
Lithium Metal Anodes ◽  
Li Metal Anode ◽  
Low Volume ◽  
Novel Concept

We report a novel concept for a stable Li metal anode via the synergistic effect of a three-dimensional skeleton and stable artificial SEI.

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.

scholarly journals Stable Li metal anode by crystallographically oriented plating through in-situ surface doping

2020 ◽  
Vol 63 (6) ◽  
pp. 1036-1045 ◽  
Author(s):  
Yangyang Liu ◽  
Shizhao Xiong ◽  
Junkai Deng ◽  
Xingxing Jiao ◽  
Baorui Song ◽  
...  
Keyword(s):  
Metal Anode ◽  
Surface Doping ◽  
Li Metal Anode
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