Enabling electrochemical compatibility of non-flammable phosphate electrolytes for lithium-ion batteries by tuning their molar ratios of salt to solvent

The morphology and electrochemical performance of the as-prepared Co3O4–CoFe2O4 composites from bimetallic metal–organic framework precursors depend greatly on the initial Fe3+/Co2+ molar ratio.

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Thermal Behavior Analysis of Melamine Modified Urea-Formaldehyde Resin with Different Molar Ratios

Materials Science Forum ◽

10.4028/www.scientific.net/msf.1001.61 ◽

2020 ◽

Vol 1001 ◽

pp. 61-66

Author(s):

Shan Feng Xu ◽

San Shan Xia ◽

Yu Zhu Chen ◽

Hui Xiao ◽

Ming Wei Jing ◽

...

Keyword(s):

Activation Energy ◽

Urea Formaldehyde ◽

Formaldehyde Emission ◽

Urea Formaldehyde Resin ◽

Molar Ratio ◽

Formaldehyde Resin ◽

Molar Ratios ◽

High Molar Ratio ◽

Degradation Properties ◽

Modified Urea

In this study, Thermogravimetry (TG) were used to analyze thermal degradation properties of two kinds of low-molar ratio of the melamine-modified urea-formaldehyde resin (MUF). The MUF was calculated using Kissinger equation and Flynn-Wall-Ozawa equation Resin pyrolysis activation energy. The results showed that the curing time of low mole was longer than that of MUF resin (muf-b), the content of free formaldehyde was lower, and the formaldehyde emission and wet bonding strength of plywood were reduced by 65.79% and 21.90%, respectively. TG test showed that the pyrolysis process of MUF resins with different molar ratios can be divided into three stages: dehydration, rapid pyrolysis and carbonization. At the same heating rate, the weight loss rate, peak conversion rate and carbon residue of the high molar ratio MUF resin (MUF-a) in the fast pyrolysis stage are larger than those of the MUF-b resin. The MUF-a resin pyrolysis activation energy is 166.76 kJ/mol, and the MUF-b resin pyrolysis activation energy is 95.30 kJ/mol. High molar ratio resin has higher pyrolysis activation energy and better thermal stability.

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Nitrogen-doped carbon-coated Ti–Fe–O nanocomposites with enhanced reversible capacity and rate capability for high-performance lithium-ion batteries

RSC Advances ◽

10.1039/c6ra10682j ◽

2016 ◽

Vol 6 (69) ◽

pp. 65266-65274 ◽

Cited By ~ 7

Author(s):

Tao Li ◽

Xue Bai ◽

Ning Lun ◽

Yong-Xin Qi ◽

Yun Tian ◽

...

Keyword(s):

Lithium Ion Batteries ◽

High Performance ◽

Rate Capability ◽

Lithium Ion ◽

Reversible Capacity ◽

Cycling Performance ◽

Molar Ratio ◽

Nitrogen Doped ◽

Carbon Coated ◽

Nitrogen Doped Carbon

An N-doped carbon-coated Ti–Fe–O multicomponent nanocomposite with a moderate Ti/Fe molar ratio of 1 : 2 exhibits good cycling performance as well as outstanding rate capability.

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Energy Level Alignment at the Cobalt Phosphate/Electrolyte Interface: Intrinsic Stability vs Interfacial Chemical Reactions in 5 V Lithium Ion Batteries

ACS Applied Materials & Interfaces ◽

10.1021/acsami.1c16296 ◽

2021 ◽

Author(s):

Gennady Cherkashinin ◽

Robert Eilhardt ◽

Silvia Nappini ◽

Matteo Cococcioni ◽

Igor Píš ◽

...

Keyword(s):

Energy Level ◽

Lithium Ion Batteries ◽

Chemical Reactions ◽

Lithium Ion ◽

Intrinsic Stability ◽

Electrolyte Interface ◽

Energy Level Alignment ◽

Cobalt Phosphate ◽

Phosphate Electrolyte

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Influence of molar ratio of MAI and PbI2 on synthesis of perovskite film

Modern Physics Letters B ◽

10.1142/s0217984921410165 ◽

2021 ◽

Author(s):

Tung-Lung Wu ◽

Jenn-Kai Tsai ◽

Ya-Zhu Song ◽

Meng-Xiu Chen ◽

Tian-Chiuan Wu ◽

...

Keyword(s):

Solar Cells ◽

Perovskite Solar Cells ◽

Molar Concentration ◽

Molar Ratio ◽

Photoelectric Conversion Efficiency ◽

Photoelectric Conversion ◽

Molar Ratios ◽

Furnace Tube ◽

Synthetic Solution ◽

Low Humidity

This study explores the influence of molar ratio of the synthetic solution of methylammonium iodide (MAI) and PbI2 on perovskite solar cells. The complete perovskite crystals must be produced in a low-humidity environment. The substrate is spin-coated in the adjusted MAPbI3 synthesis solution and annealed by using a nitrogen furnace tube to form perovskite crystals. During the crystallization of MAPbI3, some of the PbI2 remains, which improves the efficiency of the perovskite solar cell. Therefore, we adjust the molar concentration of MAI to find the appropriate amount of the PbI2 residual. We fix the MAI molar concentration at 1 M and adjust the PbI2 molar concentration from 0.8 M to 1.4 M. The molar ratios of MAI and PbI2 are, then, 1:0.8, 1:1, 1:1.2, and 1:1.4, respectively. Then, we use UV–vis, FE-SEM, and photoelectric conversion efficiency (PCE) measurements for comparing the growth of perovskite crystals and their photoelectric characteristics. The results show that 1.2 M of PbI2 is the most appropriate concentration for perovskite solar cells among the adjusted concentrations.

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The electrochemical effect of various Si/Zr molar ratios on anode materials in lithium-ion batteries

Dalton Transactions ◽

10.1039/c7dt01120b ◽

2017 ◽

Vol 46 (41) ◽

pp. 14226-14233 ◽

Cited By ~ 3

Author(s):

DongWoong Choi ◽

KwangLeong Choy

Keyword(s):

Lithium Ion Batteries ◽

Anode Materials ◽

Lithium Ion ◽

Electrochemical Analysis ◽

Molar Ratios ◽

Electrochemical Effect

The aim of this study was to unveil the mechanisms of SiO2/ZrO2 (SSZ) anode materials through electrochemical analysis and to understand the effect of various Si/Zr molar ratios (Si/Zr = 0.5, 1, and 2) on the performance of SSZ anode materials with these mechanisms.

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Fabrication of high Li:water molar ratio electrolytes for lithium-ion batteries

Chinese Chemical Letters ◽

10.1016/j.cclet.2020.05.008 ◽

2020 ◽

Author(s):

Miaofeng Huang ◽

Jiajie Yang ◽

Siron Zhen ◽

Chubin Wan ◽

Xiaoping Jiang ◽

...

Keyword(s):

Lithium Ion Batteries ◽

Lithium Ion ◽

Molar Ratio

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CuS2 sheets: a hidden anode material with a high capacity for sodium-ion batteries

Journal of Materials Chemistry C ◽

10.1039/d0tc04946h ◽

2021 ◽

Author(s):

Shaohua Lu ◽

Weidong Hu ◽

Xiaojun Hu

Keyword(s):

Lithium Ion Batteries ◽

Anode Material ◽

Low Cost ◽

High Capacity ◽

Lithium Ion ◽

Sodium Ion ◽

Sodium Ion Batteries

Due to their low cost and improved safety compared to lithium-ion batteries, sodium-ion batteries have attracted worldwide attention in recent decades.

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