Microstructure and electrochemical corrosion behavior of extruded Mg–Al–Pb–La alloy as anode for seawater-activated battery

Abstract

• Extrusion improves the discharge activity of Mg-Al-Pb-La alloy. • The relation between grain orientation and electrochemical corrosion behavior is clarified. • The extruded Mg-Al-Pb-La alloy is an appropriate anode for seawateractivated battery.

The role of Al 2 Ca and Al 2 (Sm,Ca,La) particles in the microstructures and electrochemical discharge performance of as‐extruded Mg‐3wt.%Al‐1wt.%Zn‐based alloys for primary Mg‐air batteries

“…Wang and his coworkers reported the excellent discharge performance of Pb‐doped Mg‐based anodes (AP65 alloy for seawater activated batteries), and Wen et al followed‐up a systematic work on the compositional optimization of Mg‐Al‐Pb‐(Zn) anode . Similarly, minor RE (Ce, La, Y, etc) was also considered for the modification of Mg‐Al‐Pb anode to receive desired discharge performance . The Sn‐doped Mg anodes also drew some attention because of their promoted discharge performance after different post‐treatment .…”

“…23 Similarly, minor RE (Ce, La, Y, etc) was also considered for the modification of Mg-Al-Pb anode to receive desired discharge performance. [24][25][26][27][28] The Sn-doped Mg anodes also drew some attention because of their promoted discharge performance after different post-treatment. [29][30][31][32] Yuan et al investigated the electrochemical performance of Mg-3Al anodes with Ga, In, and Sn.…”

Influence of Ga/Hg Ratio on Phase Constituents and Electrochemical Performance of Mg-Hg-Ga Anode Materials

“…Figure 4 displays the galvanostatic curves of the tested alloys. Experimental current density was 100mA/cm 2 , with an electrolyte of 3.5wt% NaCl. The MHG1, MHG3, and MHG3 alloys reached maximum voltage in 10 seconds, whereas MGH4 obtained maximum voltage in 60 seconds.…”

“…Magnesium alloys are used widely as anode sheets for seawater batteries due to their high specific energy, long-term storage, stable discharge performance and fast activation [1][2][3]. For example, magnesium alloy seawater batteries are extensively used in torpedoes and some kinds of life jackets [4].…”

Foldable water-activated reserve battery with diverse voltages

“…Among them, water-activated batteries are quite attractive because they can be easily activated by injecting fresh water 18 or seawater. [19][20][21][22][23] The water-activated battery was developed in 1940s to satisfy a request for a highenergy-density, long-shelf-life battery for marine applications. It has been known that the reserve battery also has good lowtemperature performance, and been used in weather balloons, sonobuoys, radiosondes, electric torpedoes.…”