A Li–O₂/Air Battery Using an Inorganic Solid-State Air Cathode

Abstract

The "(-) lithium (Li) anode|organic anolyte + inorganic catholyte|solid-state cathode (+)" Li-O2/air battery based on an inorganic solid-state air cathode was fabricated with a simple method. The electrochemical performance and reaction products of the Li-O2/air batteries under pure O2 and ambient air were investigated, respectively. The inorganic Li-ion conductive solid-state electrolyte Li1.3Al0.3Ti1.7(PO4)3 was stable during cycling and avoided the decomposition and volatilization problems that conventional organic electrolytes faced. Moreover, the porous air cathode provided a sufficient gas-phase O2-transport channel, facilitating the achievement of a high capacity of 14192 or 7869 mA h g(-1) under pure O2 or ambient air, respectively. Our results demonstrate that the Li-O2/air battery using an inorganic porous air cathode has a great potential for practical application.

Rechargeable Solid‐State Li–Air and Li–S Batteries: Materials, Construction, and Challenges

“…The first SSLAB was investigated in 2010, and the amount of related papers is currently limited. [77][78][79][80][81][82][83][84][85][86][87][88][89][90] Thus, we will focus on solid-state Li-air/O 2 batteries as well as the batteries using solid-state cathode with hybrid electrolyte.…”

“…[78][79][80][81][82][83][84][85] Therefore, the possible mechanism of SSLAB in ambient air is different from that of the cell in pure oxygen. Figure 9 exhibits the TEM images of the air electrode at different stages and the schematic diagrams of the proposed mechanism.…”

A novel solid-state Li–O2 battery with an integrated electrolyte and cathode structure

“…18 However, the two types of particles are randomly distributed, which is not ideal in forming a continuous pathway for electrons and Li + , and leads to particle isolation (material waste and activity loss). For conventional solid-state Li-O 2 batteries, TPBs are typically limited to the interfaces between the solid-state electrolyte and cathode, 21,22 which are much smaller in area than those of Li-O 2 batteries using liquid electrolytes where cathodes are completely saturated. 19 This result indicates that the expanded reaction sites play an indispensable role in enhancing battery performance, and at the same time, demonstrates the fact that solid-state Li-O 2 batteries exhibit very limited TPB.…”

Effects of preparation conditions on the ionic conductivity of hydrothermally synthesized Li1+Al Ti2-(PO4)3 solid electrolytes

“…More recently, various effective synthesis methods have been tried to prepare LATP with superior electrochemical properties; these methods include meltquenching [3][4][5], sol-gel [6][7][8][9][10][11], mechanical milling [12,13], and co-precipitation [14][15][16] techniques. Moreover, actual electrolytes using LATPs have been seen in many earlier examples of lithiumion [17][18][19][20][21][22], Li-air [23,24], and Li-sulfur batteries [25]. For more information, Table 1 summarizes the LATP examples [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16]26] prepared by various synthetic methods to obtain various values of room-temperature (RT) ionic conductivity (s) and activation energy (E a ), including the reported ionic conductivities (s b and s g ) and activation energies (E b and E g ) in both phases of bulk and grain boundary.…”