SPP {Sodium Polyphosphate, (NaPO3)n} Powder as Inorganic Battery Electrode Binder, 100 g/bottle, CIBEBSPP

Sodium polyphosphate (NaPO3)n (also called Sodium hexametaphosphate) is part of an emerging class of inorganic aqueous binders (IABs).2 Unlike traditional organic binders like PVDF (Polyvinylidene fluoride), these inorganic compounds provide unique benefits such as intrinsic ionic conductivity and extreme thermal stability (>1000°C). The binding strength is often attributed to condensation reactions between the -OH or functional groups on the polyphosphate chain and the surface groups of the active material and current collector during the drying process. (1) For silicon anode, it helps manage the massive volume expansion of silicon by forming a stable, rigid network that maintains electrical contact. (2) For Li-S batteries, Inorganic sodium polyphosphates are used to trap polysulfides, inhibiting the "shuttle effect" that typically degrades Li-S battery life.

Part Number	CIBEBSPP (C-IBEB-SPP)
CAS	68915-31-1
Chemical Formula/Structure	(NaPO3)n
Appearance	White powder
Purity	>98%
Package Size	100 g/bottle

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

References: 

1. C. Wei, et al. Inorganic Compounds as Binders for Si-Alloy Anodes, J. Electrochem. Soc., 2021, 168, 020505.
2. S. Trivedi, et al. Water-Soluble Inorganic Binders for Lithium-Ion and Sodium-Ion Batteries, Adv. Energy Mater., 2024, 14, 2303338.