Titanium Sulfides as Intercalation-Type Cathode Materials for Rechargeable Aluminum Batteries

Abstract

We report the electrochemical intercalation−extraction of aluminum (Al) in the layered TiS 2 and spinel-based cubic Cu 0.31 Ti 2 S 4 as the potential cathode materials for rechargeable Al-ion batteries. The electrochemical characterizations demonstrate the feasibility of reversible Al intercalation in both titanium sulfides with layered TiS 2 showing better properties. The crystallographic study sheds light on the possible Al intercalation sites in the titanium sulfides, while the results from galvanostatic intermittent titration indicate that the low Al 3+ diffusion coefficients in the sulfide crystal structures are the primary obstacle to facile Al intercalation−extraction.

Graphene: A Cathode Material of Choice for Aluminum‐Ion Batteries

“…[67] Similar behaviors could also be observed for Ni 3 S 2 and CuS. [10,12,13,17,[64][65][66][67] Although it is reported that V 2 O 5 delivers specific capacity of 273 mAh g À1 ,i ti sb asically attributed to the side reactions. [37] None of the other cathodes could attain such high specific capacity nor sustain such high current rate.…”

“…[10,12,13,17,[64][65][66][67] Although it is reported that V 2 O 5 delivers specific capacity of 273 mAh g À1 ,i ti sb asically attributed to the side reactions. [10,12,13,17,[64][65][66][67] Of greater interest is the ultralong life of the Al-graphene cell with as urvival rate of aq uarter of am illion cycles with Coulombic efficiencya nd capacity retention above 97 %a nd 94 %, respectively. [36] In contrast, the maximum tolerance for current is 0.1 Ag À1 for the rest of the cathodes essentially signifying very low power output.…”

“…[8,[12][13][14][15][16][17] Ac omprehensive analysis of various cathodes and electrolytes within the realm of AIBs was discussed in ap revious Review. [8,[12][13][14][15][16][17] Ac omprehensive analysis of various cathodes and electrolytes within the realm of AIBs was discussed in ap revious Review.…”

Porous α‐MnSe Microsphere Cathode Material for High‐Performance Aluminum Batteries

“…CR2025‐coin cells were assembled in the glovebox to study the electrochemical property, where Al foil was used as reference electrode, and glass‐fiber paper (435 mm thickness, Whatman 934‐AH) acted as the separator. In order to mitigate corrosion derived from AlCl 3 /[EMIm]Cl electrolyte, titanium foils (0.6 mm thickness, 99.9 %) served as supporters and anticorrosion materials which were attached to both the cathode shell and the anode shell (Figure S1) . The ionic liquid electrolyte was synthesized via mixing anhydrous AlCl 3 and [EMIm]Cl with a 1.1 : 1 molar ratio .…”

Rechargeable High‐Capacity Aluminum‐Nickel Batteries

“…All kinds of carbon materials exhibit a reversible capacity of 60–130 mA h g −1 and unparalleled cycle stability. Transition metal oxides, sulfides and selenides have been reported mainly including Co 3 O 4 , CuO, TiO 2 , SnO 2 , Co 3 S 4 , Co 9 S 8 , CuS, FeS 2 , MoS 2 , Mo 6 S 8 , Ni 3 S 2 , NiCo 2 S 4 , SnS 2 , TiS 2 , VS 2 , Cu 2−x Se and CoSe . These materials could provide a higher capacity, but the cycle stability is inferior than carbon materials.…”