scholarly journals Development of lithium ion conducting interface between lithium metal and a lithium ion conducting ceramic using block polymers

2020 ◽  
Author(s):  
Nitash Balsara
Keyword(s):  
Lithium Ion ◽  
Lithium Metal ◽  
Block Polymers ◽  
Ion Conducting

scholarly journals Lithium-Ion-Conducting Ceramics-Coated Separator for Stable Operation of Lithium Metal-Based Rechargeable Batteries

Materials ◽  
2022 ◽  
Vol 15 (1) ◽  
pp. 322
Author(s):  
Ryo Shomura ◽  
Ryota Tamate ◽  
Shoichi Matsuda
Keyword(s):  
Negative Electrode ◽  
Lithium Ion ◽  
Cycling Performance ◽  
Rechargeable Batteries ◽  
Stable Operation ◽  
Lithium Metal ◽  
Interfacial Resistance ◽  
Metal Anode ◽  
Ion Conducting ◽  
Coated Separator

Lithium metal anode is regarded as the ultimate negative electrode material due to its high theoretical capacity and low electrochemical potential. However, the significantly high reactivity of Li metal limits the practical application of Li metal batteries. To improve the stability of the interface between Li metal and an electrolyte, a facile and scalable blade coating method was used to cover the commercial polyethylene membrane separator with an inorganic/organic composite solid electrolyte layer containing lithium-ion-conducting ceramic fillers. The coated separator suppressed the interfacial resistance between the Li metal and the electrolyte and consequently prolonged the cycling stability of deposition/dissolution processes in Li/Li symmetric cells. Furthermore, the effect of the coating layer on the discharge/charge cycling performance of lithium-oxygen batteries was investigated.

scholarly journals Enhanced Li+ Conduction Within Single-Ion Conducting Crosslinked Gel via Reduced Cation-Polymer Interaction

2019 ◽  
Author(s):  
Hunter O. Ford ◽  
Bumjun Park ◽  
Jizhou Jiang ◽  
Jennifer Schaefer
Keyword(s):  
Lithium Ion ◽  
High Conductivity ◽  
Ion Concentration ◽  
Design Parameters ◽  
Lithium Metal ◽  
Glycol Diacrylate ◽  
Carbonate Solutions ◽  
Polymer Interactions ◽  
Ion Conducting ◽  
Poly Ethylene

The development of advanced electrolytes compatible with lithium metal and lithium-ion batteries is crucial for meeting ever growing energy storage demands. One such class of materials, single-ion conducting polymer electrolytes (SIPEs), prevents the formation of ion concentration gradients and buildup of anions at the electrode surface, improving performance. One of the ongoing challenges for SIPEs is the development of materials that are conductive enough to compete with liquid electrolytes. Presented herein is a class of gel SIPEs based on crosslinked poly(tetrahydrofuran) diacrylate that present enhanced room temperature conductivities of 3.5 × 10<sup>-5</sup> S/cm when gelled with lithium metal relevant 1,3-dioxolane/dimethoxyethane, 2.5 × 10<sup>-4</sup> S/cm with carbonate solutions, and approaching 10<sup>-3</sup> S/cm with dimethyl sulfoxide. Remarkably, these materials also demonstrate high conductivity at low temperatures, 1.8 × 10<sup>-5</sup> S/cm at -20 °C in certain solvents. Most importantly however, when contrasted with identical SIPEs formulated with poly(ethylene glycol) diacrylate, the mechanisms responsible for the enhanced conductivity are elucidated: decreasing Li<sup>+</sup>-polymer interactions and gel solvent-polymer interactions leads to an increase in Li<sup>+</sup> mobility, improving the ionic conductivity. These findings are generalizable to various SIPE chemistries, and can therefore be seen as an additional set of design parameters for developing future high conductivity SIPEs.

scholarly journals Enhanced Li+ Conduction Within Single-Ion Conducting Crosslinked Gel via Reduced Cation-Polymer Interaction

2019 ◽  
Author(s):  
Hunter O. Ford ◽  
Bumjun Park ◽  
Jizhou Jiang ◽  
Jennifer Schaefer
Keyword(s):  
Lithium Ion ◽  
High Conductivity ◽  
Ion Concentration ◽  
Design Parameters ◽  
Lithium Metal ◽  
Glycol Diacrylate ◽  
Carbonate Solutions ◽  
Polymer Interactions ◽  
Ion Conducting ◽  
Poly Ethylene

The development of advanced electrolytes compatible with lithium metal and lithium-ion batteries is crucial for meeting ever growing energy storage demands. One such class of materials, single-ion conducting polymer electrolytes (SIPEs), prevents the formation of ion concentration gradients and buildup of anions at the electrode surface, improving performance. One of the ongoing challenges for SIPEs is the development of materials that are conductive enough to compete with liquid electrolytes. Presented herein is a class of gel SIPEs based on crosslinked poly(tetrahydrofuran) diacrylate that present enhanced room temperature conductivities of 3.5 × 10<sup>-5</sup> S/cm when gelled with lithium metal relevant 1,3-dioxolane/dimethoxyethane, 2.5 × 10<sup>-4</sup> S/cm with carbonate solutions, and approaching 10<sup>-3</sup> S/cm with dimethyl sulfoxide. Remarkably, these materials also demonstrate high conductivity at low temperatures, 1.8 × 10<sup>-5</sup> S/cm at -20 °C in certain solvents. Most importantly however, when contrasted with identical SIPEs formulated with poly(ethylene glycol) diacrylate, the mechanisms responsible for the enhanced conductivity are elucidated: decreasing Li<sup>+</sup>-polymer interactions and gel solvent-polymer interactions leads to an increase in Li<sup>+</sup> mobility, improving the ionic conductivity. These findings are generalizable to various SIPE chemistries, and can therefore be seen as an additional set of design parameters for developing future high conductivity SIPEs.

Impact of the functional group in the polyanion of single lithium-ion conducting polymer electrolytes on the stability of lithium metal electrodes

RSC Advances ◽  
2016 ◽  
Vol 6 (39) ◽  
pp. 32454-32461 ◽  
Author(s):  
Qiang Ma ◽  
Yu Xia ◽  
Wenfang Feng ◽  
Jin Nie ◽  
Yong-Sheng Hu ◽  
...  
Keyword(s):  
Polymer Electrolytes ◽  
Functional Group ◽  
Lithium Ion ◽  
Metal Electrode ◽  
Interfacial Stability ◽  
Lithium Metal ◽  
Metal Electrodes ◽  
Ion Conducting ◽  
The Stability ◽  
Ion Conducting Polymer

The functional group in the polyanion plays a key role in improving the interfacial stability of the Li metal electrode.

scholarly journals Tuning the Properties of a UV-Polymerized, Cross-Linked Solid Polymer Electrolyte for Lithium Batteries

Polymers ◽  
2020 ◽  
Vol 12 (3) ◽  
pp. 595 ◽  
Author(s):  
Preston Sutton ◽  
Martino Airoldi ◽  
Luca Porcarelli ◽  
Jorge L. Olmedo-Martínez ◽  
Clément Mugemana ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Ionic Conductivity ◽  
Polymer Electrolyte ◽  
Lithium Ion ◽  
Ion Source ◽  
Solid Polymer Electrolytes ◽  
Solid Polymer ◽  
Lithium Metal ◽  
Acrylic Polymer ◽  
Ion Conducting

Lithium metal anodes have been pursued for decades as a way to significantly increase the energy density of lithium-ion batteries. However, safety risks caused by flammable liquid electrolytes and short circuits due to lithium dendrite formation during cell cycling have so far prevented the use of lithium metal in commercial batteries. Solid polymer electrolytes (SPEs) offer a potential solution if their mechanical properties and ionic conductivity can be simultaneously engineered. Here, we introduce a family of SPEs that are scalable and easy to prepare with a photopolymerization process, synthesized from amphiphilic acrylic polymer conetworks based on poly(ethylene glycol), 2-hydroxy-ethylacrylate, norbornyl acrylate, and either lithium bis (trifluoromethanesulfonyl) imide (LiTFSI) or a single-ion polymethacrylate as lithium-ion source. Several conetworks were synthesized and cycled, and their ionic conductivity, mechanical properties, and lithium transference number were characterized. A single-ion-conducting polymer electrolyte shows the best compromise between the different properties and extends the calendar life of the cell.

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