High energy efficiency and high power density aluminum‐air flow battery

Ultrahigh voltage and energy density aluminum‐air battery based on aqueous alkaline‐acid hybrid electrolyte

“…The energy density decreases quickly with the increase of current density because of the high resistance of the battery, as the resistance is mainly attributed to the AEM separator and to the large 20-mm anode-cathode distance (ACD). It is favorable to minimize ACD since it can reduce not only the polarization 46,57 but also the size and weight of the battery pack. However, the large 20-mm ACD makes sealing and assembly easily in the test.…”

“…Figure 10 presents a summary of performance of representative AAB. 18,19,21,49,50,57,58 Because of the selfcorrosion of Al anode in alkaline, the specific capacity of AAB with alkaline is mostly below 2700 mAh g Al , and the working voltage is normally below 1.5 V, hence the energy density of conventional AAB is hardly over 4000 mWh g…”

Numerical Modeling and Analysis of the Performance of an Aluminum-Air Battery with Alkaline Electrolyte

“…The internal characteristics, such as internal potential and ion distributions can be found in the simulation results. Figure 3a shows the potential in the interior of the battery for a discharge current density of 300 mA/cm 2 with a discharge voltage of about 1 V (most frequent operating condition for AAB system [38]). The potential of the aluminum plate is zero because it is grounded, and potential jumps were found at both interfaces between the two electrodes and the electrolyte.…”

Growth restriction of Co 3 O 4 nanoparticles by α‐MnO 2 nanorods as air cathode catalyst for rechargeable aluminum‐air battery

“…Metal-air batteries (MABs), with the advantages of low cost, high energy density, large capacity, and less dependence of capacity on workload and temperature, have attracted much attention. [1][2][3][4][5] MABs convert chemical energy into electricity by consuming metals and oxygen in the air, making them an ideal clean energy source. [6][7][8] Thereinto, on account of the high electrochemical equivalent (2.98 Ah/g) and volume-specific energy (8.04 Ah cm À3 ) of aluminum, the aluminum-air battery (AAB) has the actual specific energy of 900 Wh/kg, 9 and the theoretical specific energy of AAB can reach 8100 Wh/kg, 10 which is second only to lithium-air batteries in all MABs.…”

“…Metal‐air batteries (MABs), with the advantages of low cost, high energy density, large capacity, and less dependence of capacity on workload and temperature, have attracted much attention 1‐5 . MABs convert chemical energy into electricity by consuming metals and oxygen in the air, making them an ideal clean energy source 6‐8 .…”