A Novel Aluminum–Graphite Dual‐Ion Battery

A novel low-cost aluminum–graphite dual-ion battery is reported. The battery shows a reversible capacity of ≈100 mAh g−1 and a capacity retention of 88% after 200 charge–discharge cycles. A packaged aluminum–graphite battery is estimated to deliver an energy density of ≈150 Wh kg−1 at a power density of ≈1200 W kg−1, which is ≈50% higher than most commercial lithium ion batteries. Lithium ion batteries based on cation intercalation have been powering the increasingly mobile society for decades.1 In a conventional lithium ion battery, the intercalation of lithium ions in both cathode (i.e., LiCoO2, LiFePO4) and anode (i.e., graphite, silicon) materials have been thoroughly studied, while the utilization of the…

• NN
  National Natural Science Foundation of China

  Awards: 51302238, 2013C090, 51272217
• CA
  Chinese Academy of Sciences

  Award: yz201440
• SA
  Science and Technology Planning Project of Guangdong Province

  Awards: 2014A010105032, 2014A010106016