scholarly journals Immunizing lithium metal anodes against dendrite growth using protein molecules to achieve high energy batteries

2020 ◽  
Vol 11 (1) ◽  
Author(s):  
Tianyi Wang ◽  
Yanbin Li ◽  
Jinqiang Zhang ◽  
Kang Yan ◽  
Pauline Jaumaux ◽  
...  
Keyword(s):  
Coulombic Efficiency ◽  
High Energy ◽  
High Energy Density ◽  
Lithium Metal ◽  
Practical Applications ◽  
Lithium Metal Batteries ◽  
Protein Molecules ◽  
Lithium Dendrites ◽  
Lithium Metal Anodes ◽  
Metal Anodes

Abstract The practical applications of lithium metal anodes in high-energy-density lithium metal batteries have been hindered by their formation and growth of lithium dendrites. Herein, we discover that certain protein could efficiently prevent and eliminate the growth of wispy lithium dendrites, leading to long cycle life and high Coulombic efficiency of lithium metal anodes. We contend that the protein molecules function as a “self-defense” agent, mitigating the formation of lithium embryos, thus mimicking natural, pathological immunization mechanisms. When added into the electrolyte, protein molecules are automatically adsorbed on the surface of lithium metal anodes, particularly on the tips of lithium buds, through spatial conformation and secondary structure transformation from α-helix to β-sheets. This effectively changes the electric field distribution around the tips of lithium buds and results in homogeneous plating and stripping of lithium metal anodes. Furthermore, we develop a slow sustained-release strategy to overcome the limited dispersibility of protein in the ether-based electrolyte and achieve a remarkably enhanced cycling performance of more than 2000 cycles for lithium metal batteries.

scholarly journals An ultrastable lithium metal anode enabled by designed metal fluoride spansules

2020 ◽  
Vol 6 (10) ◽  
pp. eaaz3112 ◽  
Author(s):  
Huadong Yuan ◽  
Jianwei Nai ◽  
He Tian ◽  
Zhijin Ju ◽  
Wenkui Zhang ◽  
...  
Keyword(s):  
Metal Layer ◽  
Coulombic Efficiency ◽  
High Energy ◽  
High Energy Density ◽  
Metal Fluoride ◽  
Lithium Metal ◽  
Metal Anode ◽  
Lithium Metal Anode ◽  
The Matrix ◽  
Lithium Dendrites

The lithium metal anode (LMA) is considered as a promising star for next-generation high-energy density batteries but is still hampered by the severe growth of uncontrollable lithium dendrites. Here, we design “spansules” made of NaMg(Mn)F3@C core@shell microstructures as the matrix for the LMA, which can offer a long-lasting release of functional ions into the electrolyte. By the assistance of cryogenic transmission electron microscopy, we reveal that an in situ–formed metal layer and a unique LiF-involved bilayer structure on the Li/electrolyte interface would be beneficial for effectively suppressing the growth of lithium dendrites. As a result, the spansule-modified anode affords a high Coulombic efficiency of 98% for over 1000 cycles at a current density of 2 mA cm−2, which is the most stable LMA reported so far. When coupling this anode with the Li[Ni0.8Co0.1Mn0.1]O2 cathode, the practical full cell further exhibits highly improved capacity retention after 500 cycles.

scholarly journals 3D lithium metal anodes hosted in asymmetric garnet frameworks toward high energy density batteries

2018 ◽  
Vol 14 ◽  
pp. 376-382 ◽  
Author(s):  
Boyang Liu ◽  
Lei Zhang ◽  
Shaomao Xu ◽  
Dennis W. McOwen ◽  
Yunhui Gong ◽  
...  
Keyword(s):  
Energy Density ◽  
High Energy ◽  
High Energy Density ◽  
Lithium Metal ◽  
Lithium Metal Anodes ◽  
Metal Anodes

Metal-organic framework derived electrical insulating-conductive double-layer configuration for stable lithium metal anode

2021 ◽  
Author(s):  
Jianzong Man ◽  
Wenlong Liu ◽  
Haibang Zhang ◽  
Kun Liu ◽  
Yongfu Cui ◽  
...  
Keyword(s):  
Metal Organic Framework ◽  
High Energy ◽  
High Energy Density ◽  
Lithium Metal ◽  
Metal Anode ◽  
Lithium Metal Batteries ◽  
Lithium Metal Anode ◽  
Lithium Dendrites ◽  
Dendrites Growth ◽  
Metal Organic

Controlling lithium dendrites growth and alleviating volume expansion of lithium metal anode are two key factors to develop high energy density lithium metal batteries. In this work, the planar Cu...

Fabrication of necklace-like fibers separator by electrospinning technique for high electrochemical performance and safe lithium metal batteries

2021 ◽  
Author(s):  
Can Liao ◽  
Longfei Han ◽  
Na Wu ◽  
Xiaowei Mu ◽  
Yuan Hu ◽  
...  
Keyword(s):  
Electrical Energy ◽  
High Energy ◽  
High Energy Density ◽  
Lithium Metal ◽  
Electrospinning Technique ◽  
Suitable Candidate ◽  
Electrical Energy Storage ◽  
Storage Devices ◽  
Lithium Metal Batteries ◽  
Lithium Dendrites

Lithium (Li) metal batteries, as the ultimate goal of high energy density storage devices, have been regarded as a suitable candidate for next-generation electrical energy storage. Nevertheless, uncontrolled lithium dendrites...

scholarly journals Favorable Lithium Nucleation on Lithiophilic Framework Porphyrin for Dendrite-Free Lithium Metal Anodes

Research ◽  
2019 ◽  
Vol 2019 ◽  
pp. 1-11 ◽  
Author(s):  
Bo-Quan Li ◽  
Xiao-Ru Chen ◽  
Xiang Chen ◽  
Chang-Xin Zhao ◽  
Rui Zhang ◽  
...  
Keyword(s):  
Coulombic Efficiency ◽  
Dendrite Growth ◽  
Homogeneous Distribution ◽  
Electrochemical Performances ◽  
Lithium Metal ◽  
Lithium Metal Batteries ◽  
Host Materials ◽  
Lithium Metal Anodes ◽  
Excellent Stability ◽  
Metal Anodes

Lithium metal constitutes promising anode materials but suffers from dendrite growth. Lithiophilic host materials are highly considered for achieving uniform lithium deposition. Precise construction of lithiophilic sites with desired structure and homogeneous distribution significantly promotes the lithiophilicity of lithium hosts but remains a great challenge. In this contribution, a framework porphyrin (POF) material with precisely constructed lithiophilic sites in regard to chemical structure and geometric position is employed as the lithium host to address the above issues for dendrite-free lithium metal anodes. The extraordinary lithiophilicity of POF even beyond lithium nuclei validated by DFT simulations and lithium nucleation overpotentials affords a novel mechanism of favorable lithium nucleation to facilitate uniform nucleation and inhibit dendrite growth. Consequently, POF-based anodes demonstrate superior electrochemical performances with high Coulombic efficiency over 98%, reduced average voltage hysteresis, and excellent stability for 300 cycles at 1.0 mA cm−2, 1.0 mAh cm−2 superior to both Cu and graphene anodes. The favorable lithium nucleation mechanism on POF materials inspires further investigation of lithiophilic electrochemistry and development of lithium metal batteries.

Superlithiophilic graphene-silver enabling ultra-stable hosts for lithium metal anodes

2020 ◽  
Vol 7 (4) ◽  
pp. 897-904
Author(s):  
Huifeng Zhuang ◽  
Ping Zhao ◽  
Yue Xu
Keyword(s):  
Energy Density ◽  
High Energy ◽  
Electrochemical Potential ◽  
High Energy Density ◽  
Lithium Metal ◽  
Lithium Metal Anodes ◽  
Metal Anodes

Lithium (Li) metal anodes are considered to be one of the most superior anodes due to their high energy density and lowest electrochemical potential.

scholarly journals A Sponge-Driven Elastic Interface for Lithium Metal Anodes

Research ◽  
2019 ◽  
Vol 2019 ◽  
pp. 1-10
Author(s):  
Han Yu ◽  
Jian Xie ◽  
Na Shu ◽  
Fei Pan ◽  
Jianglin Ye ◽  
...  
Keyword(s):  
Coulombic Efficiency ◽  
High Capacity ◽  
High Energy ◽  
High Energy Density ◽  
Polar Groups ◽  
Stress Fluctuation ◽  
Elastic Interface ◽  
Lithium Metal Anodes ◽  
Metal Anodes

The lithium (Li) metal is one promising anode for next generation high-energy-density batteries, but the large stress fluctuation and the nonuniform Li deposition upon cycling result in a highly unstable interface of the Li anode. Herein, a simple yet facile engineering of the elastic interface on the Li metal anodes is designed by inserting a melamine sponge between Li and the separator. Driven by the good elasticity of the sponge, the modified Li anode maintains a Coulombic efficiency of 98.8% for 60 cycles and is cyclable at 10 mA cm-2 for 250 cycles, both with a high capacity of 10 mA h cm-2. We demonstrate that the sponge can be used to replace the conventional polypropylene as a porous yet elastic separator, showing superior cycling and rate performance as well. In addition to the efficiency of the elastic interface on the cycling stability, which is further confirmed by an in situ compression-electrochemistry measurement, the porous structure and polar groups of the sponge demonstrate an ability of regulating the transport of Li ions, leading to a uniform deposition of Li and the suppression of Li dendrites in cycling.

scholarly journals Favorable Lithium Nucleation on Lithiophilic Framework Porphyrin for Dendrite-Free Lithium Metal Anodes

Research ◽  
2019 ◽  
Vol 2019 ◽  
pp. 1-11 ◽  
Author(s):  
Bo-Quan Li ◽  
Xiao-Ru Chen ◽  
Xiang Chen ◽  
Chang-Xin Zhao ◽  
Rui Zhang ◽  
...  
Keyword(s):  
Coulombic Efficiency ◽  
Dendrite Growth ◽  
Homogeneous Distribution ◽  
Electrochemical Performances ◽  
Lithium Metal ◽  
Lithium Metal Batteries ◽  
Host Materials ◽  
Lithium Metal Anodes ◽  
Excellent Stability ◽  
Metal Anodes

Lithium metal constitutes promising anode materials but suffers from dendrite growth. Lithiophilic host materials are highly considered for achieving uniform lithium deposition. Precise construction of lithiophilic sites with desired structure and homogeneous distribution significantly promotes the lithiophilicity of lithium hosts but remains a great challenge. In this contribution, a framework porphyrin (POF) material with precisely constructed lithiophilic sites in regard to chemical structure and geometric position is employed as the lithium host to address the above issues for dendrite-free lithium metal anodes. The extraordinary lithiophilicity of POF even beyond lithium nuclei validated by DFT simulations and lithium nucleation overpotentials affords a novel mechanism of favorable lithium nucleation to facilitate uniform nucleation and inhibit dendrite growth. Consequently, POF-based anodes demonstrate superior electrochemical performances with high Coulombic efficiency over 98%, reduced average voltage hysteresis, and excellent stability for 300 cycles at 1.0 mA cm−2, 1.0 mAh cm−2 superior to both Cu and graphene anodes. The favorable lithium nucleation mechanism on POF materials inspires further investigation of lithiophilic electrochemistry and development of lithium metal batteries.

scholarly journals Accurate Determination of Coulombic Efficiency for Lithium Metal Anodes and Lithium Metal Batteries

2017 ◽  
Vol 8 (7) ◽  
pp. 1702097 ◽  
Author(s):  
Brian D. Adams ◽  
Jianming Zheng ◽  
Xiaodi Ren ◽  
Wu Xu ◽  
Ji-Guang Zhang
Keyword(s):  
Coulombic Efficiency ◽  
Accurate Determination ◽  
Lithium Metal ◽  
Lithium Metal Batteries ◽  
Lithium Metal Anodes ◽  
Metal Anodes

scholarly journals Design rules for liquid crystalline electrolytes for enabling dendrite-free lithium metal batteries

2020 ◽  
Vol 117 (43) ◽  
pp. 26672-26680
Author(s):  
Zeeshan Ahmad ◽  
Zijian Hong ◽  
Venkatasubramanian Viswanathan
Keyword(s):  
Density Functional ◽  
Liquid Crystalline ◽  
Morphological Evolution ◽  
High Energy ◽  
Rechargeable Batteries ◽  
High Energy Density ◽  
Lithium Metal ◽  
Metal Anode ◽  
Practical Applications ◽  
Lithium Metal Batteries

Dendrite-free electrodeposition of lithium metal is necessary for the adoption of high energy-density rechargeable lithium metal batteries. Here, we demonstrate a mechanism of using a liquid crystalline electrolyte to suppress dendrite growth with a lithium metal anode. A nematic liquid crystalline electrolyte modifies the kinetics of electrodeposition by introducing additional overpotential due to its bulk-distortion and anchoring free energy. By extending the phase-field model, we simulate the morphological evolution of the metal anode and explore the role of bulk-distortion and anchoring strengths on the electrodeposition process. We find that adsorption energy of liquid crystalline molecules on a lithium surface can be a good descriptor for the anchoring energy and obtain it using first-principles density functional theory calculations. Unlike other extrinsic mechanisms, we find that liquid crystals with high anchoring strengths can ensure smooth electrodeposition of lithium metal, thus paving the way for practical applications in rechargeable batteries based on metal anodes.

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