DFHMA (Dodecafluoroheptyl methacrylate, >98%} as Fluorinated Monomer for Gel Polymer Electrolyte, 50-200 g/bottle, CGPEFMDFHMA

Dodecafluoroheptyl methacrylate (DFHMA) is a specialized fluorinated monomer (C11H7F12O2) featuring a polymerizable methacrylate group attached to a long, hydrophobic and oleophobic fluorocarbon tail. In advanced energy storage research, DFHMA is utilized as a high-performance functional co-monomer for Gel Polymer Electrolytes (GPEs). By copolymerizing into the 3D network, it leverages its low surface energy to spontaneously segregate toward electrode and separator interfaces, forming a robust, fluorine-rich protective interphase that stabilizes high-voltage lithium and sodium metal batteries.

The main functional roles of the DFHMA in GPEs are: (1) Rich Fluorine-Based Interphase (SEI/CEI Engineering): Upon initial electrochemical formation or thermal curing, the fluorinated side chains of DFHMA decompose to participate in the formation of a dense, inorganic-rich Solid Electrolyte Interphase (SEI) on anodes and Cathode Electrolyte Interphase (CEI) on high-voltage cathodes. This interphase is rich in lithium fluoride (LiF) and fluorophosphates, which suppress transition-metal dissolution and electrolyte co-intercalation. (2) Suppression of High-Voltage Electrolyte Oxidation: By concentrating fluorinated polymer segments at the cathode interface, DFHMA shields the bulk carbonate electrolyte from catalytic decomposition and gas evolution at elevated voltages (such as 4.6V LCO or ultra-high-nickel NCM systems). (3) Enhanced Thermal Stability & Moisture Resistance: The hydrophobic perfluorinated blocks repel trace moisture contaminants within the cell environment and elevate the thermal decomposition threshold of the resulting gel polymer electrolyte matrix.

Part Number	CGPEFMDFHMA (C-GPE-FM-DFHMA)
CAS	2261-99-6
Chemical Formula	C11H8F12O2
Appearance	Colorless and clear liquid
Purity	>98% (mixture of isomers)
Molecular Weight	400.16 g/mol
Density	1.536 g/mL at 25 °C
Boling Point	112 °C
Package Size	50 g, 100, and 200 g/bottle

Notes: Please try to store the DFHMA monomer in a dry and dark place.  

References: 

1. Z. Fang, et al. Significance of Fluorine Chain-Driven Active Sites for Enhanced Selective Lithium Recovery, Adv. Funct. Mater., 2026,36, e18476
2. Y. Qi, et al. An In Situ Polymerization Gel Polymer Electrolyte Based on Pentaerythritol Tetracrylate for High-Performance Lithium-Ion Batteries, ACS Appl. Mater. Interfaces (2024) 16 (48): 66201–66210.