Interfacial Reaction in Poly Si[sub 1−x]Ge[sub x]/ZrO[sub 2] with Ge Content in Poly Si[sub 1−x]Ge[sub x] Films

The advancements of lithium‐ion batteries indubitably call for advanced electrolytes with superior environmental adaptability and long‐term stability. Propylene carbonate (PC) proves to be a competitive solvent with the high permittivity and wide‐liquid range, while the application is intrinsically hindered by the poor graphite compatibility and high viscosity. Here, a PC‐based electrolyte with wide‐temperature range is developed by tuning the strength and topology of the Li+‐PC interactions via non‐solvating interactions without altering the solvation structure. Thus, the problem of graphite exfoliation caused by Li+‐PC co‐intercalation can be successfully mitigated. Consequently, such electrolyte shows compatibility with both graphite and high‐nickel cathode, exhibiting an expanded liquid range from −90 to 90 °C. This work, breaking from the traditional EC‐based formula, provides a new strategy for designing PC‐enabled electrolyte featuring high performance, wide‐temperature compatibility, and sustainability

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Rejuvenating Propylene Carbonate‐based Electrolyte Through Nonsolvating Interactions for Wide‐Temperature Li‐ions Batteries

Qin

Liu

Zeng

et al. 2022

Advanced Energy Materials

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A Novel Li⁺‐Conducting Polymer Membrane Gelled by Fluorine‐Free Electrolyte Solutions for Li‐Ion Batteries

Navarra

Tsurumaki

Vitucci

et al. 2020

Batteries & Supercaps

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Gel polymer electrolytes (GPEs), composed of poly(vinylidene fluoride) (PVdF), a ternary solvent of ethylene carbonate : propyylene carbonate : dimethyl carbonate, and LiBOB, which are characterized by a novel composition with a fluorine-free lithium salt, are here proposed. GPEs were firstly prepared through a solution casting procedure using the ternary carbonate solution as a solvent (named ex situ prepared membranes), and then activated by being immersed in a 0.7 M LiBOB-carbonate solution. Fundamental characterizations, including thermal, spectroscopical, mechanical, and electrochem-ical analyses, were carried out and compared before and after the activation. GPEs, having the same composition, were also prepared by using a novel procedure (named in situ prepared membranes), involving the formation of PVdF membrane and its activation by the LiBOB electrolyte, as well as subsequent electrochemical characterizations, in the same T-shape cell. Thus prepared lithium-ion batteries, employing SnÀ C and LiFePO 4 electrodes, were demonstrated to exhibit a high capacity of 150 mAh g À 1 through the course of cycling.

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Effect of deposition conditions of poly Si1−xGex films and Ge atoms on the electrical properties of poly Si1−xGex (x=0,0.6)/HfO2 gate stack

Kang

Nam

Min

et al. 2003

Journal of Applied Physics

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The effect of interfacial reactions at the poly Si1−xGex/HfO2 interface on the electrical properties of metal–oxide–semiconductor (MOS) capacitors with a poly Si1−xGex (x=0,0.6)/HfO2 gate stack was investigated relative to the deposition conditions for the poly Si1−xGex films, the Ge content of the poly Si1−xGex films, and the annealing temperatures, by the electrical measurements and x-ray photoelectron spectroscopy. With an increase in hydrogen induced from doping or from deposition gas used during the deposition of poly Si1−xGex (x=0,0.6) films, the accumulation capacitance of the MOS capacitors with a poly Si1−xGex/HfO2 gate stack became anomalous and the leakage current increased significantly, due to the formation of hydroxyl(OH–) ions or the partial reduction of HfO2 at the grain boundary. With an increase in Ge content of the poly Si1−xGex films, silicate formation became dominant at the poly Si1−xGex/HfO2 interface, resulting in a significant decrease in leakage current.

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Interfacial Reaction in Poly Si[sub 1−x]Ge[sub x]/ZrO[sub 2] with Ge Content in Poly Si[sub 1−x]Ge[sub x] Films

Cited by 5 publications

References 12 publications

Rejuvenating Propylene Carbonate‐based Electrolyte Through Nonsolvating Interactions for Wide‐Temperature Li‐ions Batteries

Rejuvenating Propylene Carbonate‐based Electrolyte Through Nonsolvating Interactions for Wide‐Temperature Li‐ions Batteries

A Novel Li⁺‐Conducting Polymer Membrane Gelled by Fluorine‐Free Electrolyte Solutions for Li‐Ion Batteries

Effect of deposition conditions of poly Si1−xGex films and Ge atoms on the electrical properties of poly Si1−xGex (x=0,0.6)/HfO2 gate stack

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Interfacial Reaction in Poly Si[sub 1−x]Ge[sub x]/ZrO[sub 2] with Ge Content in Poly Si[sub 1−x]Ge[sub x] Films

Cited by 5 publications

References 12 publications

Rejuvenating Propylene Carbonate‐based Electrolyte Through Nonsolvating Interactions for Wide‐Temperature Li‐ions Batteries

Rejuvenating Propylene Carbonate‐based Electrolyte Through Nonsolvating Interactions for Wide‐Temperature Li‐ions Batteries

A Novel Li+‐Conducting Polymer Membrane Gelled by Fluorine‐Free Electrolyte Solutions for Li‐Ion Batteries

Effect of deposition conditions of poly Si1−xGex films and Ge atoms on the electrical properties of poly Si1−xGex (x=0,0.6)/HfO2 gate stack

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A Novel Li⁺‐Conducting Polymer Membrane Gelled by Fluorine‐Free Electrolyte Solutions for Li‐Ion Batteries