STMP {Sodium Trimetaphosphate, (NaPO3)3} Powder as Inorganic Battery Electrode Binder, 100 g/bottle, CIBEBSTMP

Sodium trimetaphosphate (STMP), with the chemical formula $Na_3P_3O_9$, is an emerging inorganic aqueous binder (IAB) for both Lithium-ion and Sodium-ion batteries. While traditionally used in the food and construction industries, its unique cyclic phosphate structure allows it to function as a multifunctional binder that improves battery performance and safety. STMP binds through condensation reactions. Its phosphate functional groups interact with the surface groups of electrode materials (like silicon or layered oxides) and the metal current collector to form a robust 3D network.

(1)  In Sodium-Ion Batteries (SIBs), STMP is highly effective for P2-type layered oxide cathodes. It has been shown to deliver superior cycling stability (e.g., retaining over 80% capacity after hundreds of cycles) compared to PVDF and CMC binders.

(2) As for silicon anode, Its high structural stability helps manage the volume expansion of silicon-based materials, maintaining the electrical connectivity of the anode even under high stress.

Part Number	CIBEBSTMP (C-IBEB-STMP)
CAS	7785-84-4
Chemical Formula/Structure	(NaPO3)3
Appearance	White powder
Molar Mass (Mw)	305.89
Purity	>99.0%
Package Size	100 g/bottle

Notes: Please try to store the STMP powder in a dry place (glovebox is the best option). 

References: 

1. L. Li, et al. Preparation of sodium trimetaphosphate and its application as an additive agent in a novel polyvinylidene fluoride based gel polymer electrolyte in lithium sulfur batteries, Polym. Chem., 2015,6, 1619-1626.
2. S. Trivedi, et al. Ionically conducting inorganic binders: a paradigm shift in electrochemical energy storage, Green Chem., 2022,24, 5620-5631.