Dimethyl methylphosphonate-based nonflammable electrolyte and high safety lithium-ion batteries

Xiang, Hongfa; Qi, Jin; Chen, C.H.; Ge, Xinlei; Guo, Shirui; Sun, Jinhua

doi:10.1016/j.jpowsour.2007.09.025

Cited by 96 publications

(60 citation statements)

References 24 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…That is, the addition of 10 mass% DMMPp to LiPF 6 /EC + DEC showed a self-extinguishing property. However, suffi cient nonfl ammability was observed for the system containing about 50 vol.% of DMMPp [ 117 ]. In those systems, a huge irreversible capacity was also observed for graphitic carbon, MCMB (mesocarbon microbead), as the negative electrode.…”

Section: Alkyl Phosphonates and Phosphitesmentioning

confidence: 99%

Nonaqueous Electrolytes with Advances in Solvents

Sasaki

Tanaka

et al. 2014

Modern Aspects of Electrochemistry

View full text Add to dashboard Cite

Most of the liquid electrolytes used in commercial lithium-ion (Li-ion) cells are nonaqueous solutions, in which roughly 1 mol dm −3 of lithium hexafl uorophosphate (LiPF 6 ) salt is dissolved in a mixture of carbonate solvents selected from cyclic carbonates-ethylene carbonate and propylene carbonate-and linear carbonates-dimethyl carbonate, ethyl methyl carbonate, and diethyl carbonate. In Sect. 2.1, the physicochemical properties of these carbonate solvents are listed and the phase diagrams and electrolytic conductivity data of mixed carbonate solvent systems are given. However, recent market demands for Li-ion cells with higher energy, higher power, and higher safety requires new solvents to improve the performance of cells in electrolytes based on carbonate solvents only. New heteroatom-containing organic solvents including fl uorine, boron, phosphorous, and sulfur, which have been applied to lithium cells in recent years, are reviewed from the viewpoints of synthesis, physicochemical properties, and cell performance by four authors.

show abstract

Section: Alkyl Phosphonates and Phosphitesmentioning

confidence: 99%

Nonaqueous Electrolytes with Advances in Solvents

Sasaki

Tanaka

et al. 2014

Modern Aspects of Electrochemistry

View full text Add to dashboard Cite

show abstract

“…Additionally, the decomposition procedure of phosphorous-containing fire retardant can also function in the vapor phase through an H radical capture mechanism to slow down the combustion rate. 21,38 Besides, the LOI value of the crosslinked microPCMs as shells was modestly enhanced by 3% when compared with the uncrosslinked microPCMs. This result accords with the conclusion obtained in the evaluation of PCM content and thermal stability.…”

Section: Flammability Of Microcapsule-treated Foamsmentioning

confidence: 97%

Preparation and characterization of flame retardant phase change materials by microencapsulated paraffin and diethyl ethylphosphonate with poly(methacrylic acid‐co‐ethyl methacrylate) shell

Qiu

Chen

2015

J of Applied Polymer Sci

View full text Add to dashboard Cite

Microcapsules containing paraffin and diethyl ethylphosphonate (DEEP) flame retardant with uncrosslinked and crosslinked poly (methacrylic acid-co-ethyl methacrylate) (P(MAA-co-EMA)) shell were fabricated by suspension-like polymerization. The surface morphologies of the microencapsulated phase change materials (microPCMs) were studied by scanning electron microscopy. The thermal properties and thermal stabilities of the microPCMs were investigated by differential scanning calorimetry (DSC), and thermal gravimetric analysis (TGA). The flame retarding performances of the microcapsule-treated foams were calculated by using an oxygen index instrument. The DSC results showed that the crosslinking of the polymer shell led to an increase in the melting enthalpies of the microcapsule by more than 15%. The crosslinked P(MAA-co-EMA) microcapsules with DEEP and without DEEP have melting enthalpies of 67.2 and 102.9 J/g, respectively. The TGA results indicated that the thermal resistant temperature of the crosslinked microcapsules with DEEP was up to 171 C, which was higher than that of its uncrosslinked counterpart by 20 C. The incorporation of DEEP into the microPCM increased the limiting oxygen index value of the microcapsule-treated foams by over 5%. Thermal images showed that both microcapsule-treated foams with and without DEEP possessed favorably temperature-regulated properties. As a result, the microPCMs with paraffin and DEEP as core and P(MAA-co-EMA) as shell have good thermal energy storage and thermal regulation potentials, such as thermal-regulated foams heat insulation materials.

show abstract

“…In order to enhance the safety of lithium ion batteries, many flame retardant additives for electrolytes have been developed. Tris-(2,2,2-trifluoroethyl) phosphate (TFP), and dimethyl methylphosphonate (DMMP) have been found to be able to reduce the flammability of the electrolytes, while simultaneously improving the cycling performance of the cell [12][13][14][15]. The common electrolytes which are added into the flame retardant additives can result in non-flammability or at least retard flammability of the whole electrolyte system, which is an efficient solution for the thermal safety of the lithium ion battery (LIB).…”

Section: Introductionmentioning

confidence: 99%

A Multi-Component Additive to Improve the Thermal Stability of Li(Ni1/3Co1/3Mn1/3)O2-Based Lithium Ion Batteries

Wang

Sun

2016

Energies

View full text Add to dashboard Cite

Abstract:To improve the safety of lithium ion batteries, a multi-component (MC) additive (consisting of vinylene carbonate (VC), 1,3-propylene sulfite (PS) and dimethylacetamide (DMAC)) is used in the baseline electrolyte (1.0 M LiPF 6 /ethylene carbonate (EC) + diethyl carbonate (DEC)). The electrolyte with the MC additive is named safety electrolyte. The thermal stabilities of fully charged Li(Ni 1/3 Co 1/3 Mn 1/3 )O 2 (NCM) mixed with the baseline electrolyte and safety electrolyte, respectively, are investigated using a C80 micro-calorimeter. The electrochemical performances of the NCM/baseline electrolyte/Li and NCM/safety electrolyte/Li half cells are evaluated using galvanostatic charge/discharge, cyclic voltammetry and alternating current (AC) impedance. The experimental results demonstrate that the fully charged NCM-safety electrolyte system releases less heat and reduces the main sharp exothermic peak value to a great extent, with a reduction of 40.6%. Moreover, the electrochemical performances of NCM/safety electrolyte/Li half cells are not worse, and are almost as good as that of the NCM/baseline electrolyte/Li half cells.

show abstract

Dimethyl methylphosphonate-based nonflammable electrolyte and high safety lithium-ion batteries

Cited by 96 publications

References 24 publications

Nonaqueous Electrolytes with Advances in Solvents

Nonaqueous Electrolytes with Advances in Solvents

Preparation and characterization of flame retardant phase change materials by microencapsulated paraffin and diethyl ethylphosphonate with poly(methacrylic acid‐co‐ethyl methacrylate) shell

A Multi-Component Additive to Improve the Thermal Stability of Li(Ni1/3Co1/3Mn1/3)O2-Based Lithium Ion Batteries

Contact Info

Product

Resources

About