3D Porous Metal–Organic Skeleton Based on Polyoxometalate Nanoclusters as an Anode in a Lithium-Ion Battery

Basket-like polyoxometalate (POM) nanoclusters possess
bulky space
barriers and limited coordination active sites; therefore, it is difficult
for them to bond with functional metal–organic building units
to construct porous materials. To overcome this bottleneck, we adopt
a dual-ligand strategy to anchor basket-like POM nanoclusters onto
a Ag-pz metal–organic chain yielding a polyporous hybrid material,
(H4btb)[{Ag4(H2O)(pz)5Cl}{H2SrP6Mo18O73}]·4H2O (BAS-MOF-1). It is the first three-dimensional
(3D) net with intersecting tunnels based on a unique double-layer
structure composed of {P6Mo18O73}
nodes and Ag-pz chains. As an anode for a Li-ion battery (LIB), this
material shows higher lithiation capacity, stability, and rate than
zero-dimensional (0D) control compounds, which can be ascribed to
the superior redox ability of basket-like POMs and stable organic–inorganic
porous structures.