Biomass‐Derived Poly(Furfuryl Alcohol)–Protected Aluminum Anode for Lithium‐Ion Batteries

Abstract

Aluminum is one of the promising alternative anode materials due to its high specific capacity. However, some critical problems seriously limit its practical applications, such as the low coulombic efficiency and poor cycle performance resulting from the huge volume change during cycling. Herein, a novel poly(furfuryl alcohol)/carbon black binder composite is coated on the surface of aluminum foil as a robust and conductive protective layer to maintain the integrity of the hybrid aluminum anode. The results show that 150 cycles under the preset cutoff capacity loading of 400 mA h g−1 are obtained and exhibit obvious advantages over a bare aluminum anode, which will crack after just 25 cycles. For full‐cell testing paired with a LiFePO4 cathode, the cell using the hybrid aluminum anode has a better capacity retention against the unprotected aluminum anode.

Supercapacitors Fabricated via Laser-Induced Carbonization of Biomass-Derived Poly(furfuryl alcohol)/Graphene Oxide Composites

“…Its monomer, furfuryl alcohol (FA), is prepared from the hydrogenation of furfural, which is easily prepared in large quantities from a variety of biomass waste derivatives, such as corncobs, rice hulls, bagasse, and wood. 36,37 As such, it is a compelling choice as a precursor for the formation of LIG.…”

“…Its chemical structure is similar to phenol–formaldehyde resins, which have been previously utilized to form LIG-based supercapacitors, albeit with much lower specific capacitances than PI. , However, unlike petroleum-based PF resin, PFA is also a sustainable and green polymer. Its monomer, furfuryl alcohol (FA), is prepared from the hydrogenation of furfural, which is easily prepared in large quantities from a variety of biomass waste derivatives, such as corncobs, rice hulls, bagasse, and wood. , As such, it is a compelling choice as a precursor for the formation of LIG.…”

Ultrathin Aluminum Nanosheets Grown on Carbon Nanotubes for High Performance Lithium Ion Batteries

“…During the discharge/charge process, the surface oxide layer could react with Li + , which may gradually crack the residual surface oxide layer and exposure of fresh Al metal for Li storage leading to increasing capacities. [ 58 ] Additionally, amorphous phase in the Al nanosheets would be formed during the repeated lithiation and delithiation process, which makes the formation of LiAl alloy more favorable, like Li 3 Al 2 and Li 9 Al 4 , to produce more capacity during battery cycling. [ 37 ]…”

Alloy‐Type Anodes for High‐Performance Rechargeable Batteries

“…Other strategies pursued include the use of an Al foil coated with carbon material, [15] an inactive copper (Cu)-active Al composite design of Cu-Al@Al anode, [4h] a core-shell Al and carbon nanosphere (nAl@C) [16] Al anode, a sandwich-structured nickel foam/Al foil/nickel foam (Ni-Al-Ni) composite anode, [4m] a novel battery configuration based on an aluminum foil anode, [17] and an Al foil coated with poly-(furfuryl alcohol)/carbon black binder (PFA/CB) composite. [18] An Al-based anode with increased porosity was fabricated by depositing Al directly onto one side of a 3D porous glass fiber separator to form a porous anode before a graphite cathode was then deposited on the opposite side (Figure 2c). [19] This Al anode deposited on a glass fiber separator showed a stable rate performance (Figure 2d), and the battery could sustain at 30 C discharge capacity without capacity decay.…”