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Article
Enhanced capacity retention based silicon nanosheets electrode by CMC coating for lithium-ion batteries
Si nanosheets (SiNS) as two dimensional Si nanomaterials are promising candidates for anodes of lithium ion batteries (LIBs) by their large surface area and excellent mechanical durability. In this study, we f...
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Article
Electronic structural studies on the improved thermal stability of Li(Ni0.8Co0.15Al0.05)O2 by ZrO2 coating for lithium ion batteries
The electronic structures of bare and ZrO2-coated Li(Ni0.8Co0.15Al0.05)O2 electrode systems were investigated using a combination of time-resolved X-ray diffraction and soft X-ray absorption spectroscopy (XAS) te...
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Article
Open AccessLithium intercalation mechanism into FeF3·0.5H2O as a highly stable composite cathode material
The growing demand for lithium-ion batteries (LIBs) requires investigation of high-performance electrode materials with the advantages of being environmentally friendly and cost-effective. In this study, a nan...
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Article
Open AccessEnhanced performance of sulfur-infiltrated bimodal mesoporous carbon foam by chemical solution deposition as cathode materials for lithium sulfur batteries
The porous carbon matrix is widely recognized to be a promising sulfur reservoir to improve the cycle life by suppressing the polysulfide dissolution in lithium sulfur batteries (LSB). Herein, we synthesized m...
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Article
Synthesis of lithium titanium oxide (Li4Ti5O12) with ultrathin carbon layer using supercritical fluids for anode materials in lithium batteries
Lithium titanium oxide (LTO: Li4Ti5O12) particles were produced via a continuous supercritical fluid process for use as anodes in lithium ion batteries. The synthesized LTO particles in supercritical water (scH2O...
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Article
Open AccessElectrochemically-induced reversible transition from the tunneled to layered polymorphs of manganese dioxide
Zn-ion batteries are emerging energy storage systems eligible for large-scale applications, such as electric vehicles. These batteries consist of totally environmentally-benign electrode materials and potentia...
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Article
The effect of vanadium precursors on the electrochemical performance of Li1.1V0.9O2 as an anode material for Li-ion batteries
Recently, Li1.1V0.9O2 has been considered as one of the most promising anode materials for Li-ion batteries due to its high volumetric capacity at a relatively low intercalation potential. For a scalable and econ...
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Article
Open AccessMechanochemical Synthesis of Li2MnO3 Shell/LiMO2 (M = Ni, Co, Mn) Core-Structured Nanocomposites for Lithium-Ion Batteries
Core/shell-like nanostructured xLi2MnO3·(1−x)LiMO2 (M = Ni, Co, Mn) composite cathode materials are successfully synthesized through a simple solid-state reaction using a mechanochemical ball-milling process. The...
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Article
Open AccessStabilization of Oxygen-deficient Structure for Conducting Li4Ti5O12-δ by Molybdenum Do** in a Reducing Atmosphere
Li4Ti5O12 (LTO) is recognized as being one of the most promising anode materials for high power Li ion batteries; however, its insulating nature is a major drawback. In recent years, a simple thermal treatment ca...
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Article
Synthesis of nanostructured Li2MnSiO4/C using a microwave assisted sol–gel process with water as a base solvent
Microwave assisted sol–gel method is used to fabricate nanostructured Li2MnSiO4/C composites. Our process has the advantages in homogenous heating and reduced reaction time. In addition, the water is used as a ba...
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Article
Effects of transition metal do** and surface treatment to improve the electrochemical performance of Li2MnO3
A novel strategy to improve the electrochemical performance of Li2MnO3 using transition metal do** by the mechanochemical process is proposed. Li2MnO3 precursors are treated with transition metal containing che...
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Article
Formation of an SEI on a LiMn2O4 cathode during room temperature charge–discharge cycling studied by soft X-ray absorption spectroscopy at the Fluorine K-edge
The solid electrolyte interface (SEI) formation on the surface of LiMn2O4 electrodes during room temperature charge–discharge cycling was studied using soft X-ray absorption spectroscopy at the Fluorine (F) K-edg...
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Article
Microstructural and electrochemical properties of Ti-doped Al2O3 coated LiCoO2 films
We studied the microstructural and electrochemical properties of Ti-doped Al2O3 (Ti-Al2O3) coated LiCoO2 thin films depending on the Ti composition. The 1.27 at.% Ti-Al2O3 coated films had an amorphous structure ...
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Article
Continuous supercritical hydrothermal synthesis: lithium secondary ion battery applications
Nanosized lithium iron phosphate (LiFePO4) and transition metal oxide (MO, where M is Cu, Ni, Mn, Co, and Fe) particles are synthesized continuously in supercritical water at 25–30 MPa and 400°C under various con...
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Article
Dependence of Al2O3 coating thickness and annealing conditions on microstructural and electrochemical properties of LiCoO2 film
We studied the dependence of Al2O3 coating thickness and annealing conditions on the surface morphology and electrochemical properties of Al2O3 coated LiCoO2 films. The optimum coating thickness allowing for the ...
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Article
Effect of heat treatment on electrochemical characteristics of spinel lithium titanium oxide
Spinel structured LTO (lithium titanium oxide), Li4Ti5O12, materials have gained renewed interest in electrodes for lithium-ion batteries. Powder precursors were mixed by HEBM (high energy-ball mill) and Li4Ti5O1...
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Article
Carbon film covering originated from fullerene C60 on the surface of lithium metal anode for lithium secondary batteries
Carbon films from fullerene C60 were coated on the surface of lithium metal for the anode of lithium secondary battery. In order to investigate the relationship between the electrochemical characteristics of the ...
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Article
Electrochemical characteristics of amophous carbon coated silicon electrodes
The properties of carbon films deposited by the radio frequency plasma sputtering of a fullerene C60 target were investigated to elucidate the dependence on the plasma power. A radio frequency argon plasma power ...
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Article
Electrochemical properties of gel polymer electrolyte based on poly(acrylonitrile)-poly(ethylene glycol diacrylate) blend
Gel type electrolyte was formulated by blending of PEDGA and PAN. PEDGA is a UV curable polymer which forms a chemical crosslink by UV or heat. Gel type electrolyte is very stable in ionic conductivity and int...
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Article
Characteristics of Cu/C Films on Polymer Substrate Prepared by Room Temperature ECR-MOCVD Coupled with Periodic DC Bias
Cu/C films were prepared at room temperature under Cu(hfac)2-Ar-H2 atmosphere in order to obtain metallized polymer by using ECR-MOCVD (Electron Cyclotron Resonance Metal Organic Chemical Vapor Deposition) couple...
