TMPTMP {Trimethylolpropane Tris(3-mercaptopropionate), TMPTP or TMPMP, >97%} as Crosslinking Monomer for Gel Polymer Electrolyte, 50-200 g/bottle, CGPECMTMPTMP

Trimethylolpropane Tris(3-mercaptopropionate) (TMPTMP) is a trifunctional thiol monomer (C12H20O6S3) featuring three reactive thiol (-SH) groups radiating from a central trimethylolpropane core. In advanced energy storage research, TMPTMP is widely utilized as an efficient, trifunctional crosslinking agent for Gel Polymer Electrolytes (GPEs) and in situ polymerized solid/gel systems via thiol-ene click chemistry, offering a balanced crosslink density, rapid curing kinetics, and robust mechanical elasticity for high-energy lithium and sodium metal batteries.

The main functional roles of TMPTMP monomer in GEPs are: (1) Controlled 3D Network & Liquid Immobilization: When paired with multi-vinyl crosslinkers (e.g., PEGDA or triallyl compounds) in the presence of an initiator, TMPTMP rapidly forms a stable 3D polymer mesh that permanently traps and immobilizes organic liquid electrolytes. This eliminates free-flowing liquid leakage and converts high-energy liquid cells into safe, dimensionally stable gel systems. (2) Oxygen-Free In Situ Pouch Cell Curing: Standard acrylic or methacrylic in situ polymerizations are frequently hindered by trace residual oxygen trapped inside sealed pouch cells, leading to incomplete conversion. Thiol-ene systems involving TMPTMP are largely immune to oxygen quenching, ensuring uniform, complete crosslinking throughout the entire electrode-separator assembly. (3) Stress Relaxation During Electrode Volume Fluctuations: The flexible thioether bonds and well-controlled network mesh of TMPTMP-based GPEs provide high elongation and resilience. This enables the electrolyte to dynamically accommodate severe volume expansion and contraction—such as those encountered in silicon anodes or high-capacity lithium/sodium metal plating—without interfacial delamination or cracking.

Part Number	CGPECMTMPTMP (C-GPE-CM-TMPTMP)
CAS	33007-83-9
Chemical Formula	C15H26O6S3
Appearance	Colorless to light-yellow clear liquid
Purity	>97%
Molecular Weight	398.56 g/mol
Density	1.21 g/mL at 25 °C
Boling Point	220 °C at 0.3 mmHg
Flash Point	96 °C
Package Size	50 g, 100 g, and 200 g/bottle

Notes: Please try to store the TMPTMP monomer in a dry, cool and dark place (<15°C).  

References: 

1. M. Longo, et al. Comparative Study of Photopolymerized Gel Polymer Electrolytes Obtained via Thiol-Ene Click Reaction for Li Metal Batteries, Energy Environmental Material, 2025, 8, e70028
2. F. Yi, et al. In situ preparation of nonflammable phosphorus-containing gel polymer electrolyte for lithium metal battery with enhanced interfacial stability and safety, Chemical Engineering Journal, 2025, 506, 160011