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Rechargeable Alkaline Zinc/Copper Oxide Batteries

ACS Applied Energy Materials

Schorr, Noah B.; Arnot, David J.; Bruck, Andrea M.; Duay, Jonathon W.; Kelly, Maria; Habing, Rachel L.; Ricketts, Logan S.; Vigil, Julian A.; Gallaway, Joshua W.; Lambert, Timothy N.

Resurrecting a battery chemistry thought to be only primary, we demonstrate the first example of a rechargeable alkaline zinc/copper oxide battery. With the incorporation of a Bi2O3additive to stabilize the copper oxide-based conversion cathode, Zn/(CuO-Bi2O3) cells are capable of cycling over 100 times at >124 W h/L, with capacities from 674 mA h/g (cycle 1) to 362 mA h/g (cycle 150). The crucial role of Bi2O3in facilitating the electrochemical reversibility of Cu2O, Cu(OH)2, and Cuowas supported by scanning and transmission electrochemical microscopy, cyclic voltammetry, and rotating ring-disc electrode voltammetry and monitoredvia operandoenergy-dispersive X-ray diffraction measurements. Bismuth was identified as serving two roles, decreasing the cell resistance and promoting Cu(I) and Cu(II) reduction. To mitigate the capacity losses of long-term cycling CuO cells, we demonstrate two limited depth of discharge (DOD) strategies. First, a 30% DOD (202 mA h/g) retains 99.9% capacity over 250 cycles. Second, the modification of the CuO cathode by the inclusion of additional Cu metal enables performance at very high areal capacities of ∼40 mA h/cm2and unprecedented energy densities of ∼260 W h/L, with near 100% Coulombic efficiency. This work revitalizes a historically primary battery chemistry and opens opportunity to future works in developing copper-based conversion cathode chemistries for the realization of low-cost, safe, and energy-dense secondary batteries.

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Advances in Alkaline Conversion Batteries for Grid Storage Applications

Lambert, Timothy N.; Schorr, Noah B.; Arnot, David J.; Lim, Matthew B.; Bell, Nelson S.; Bruck, Andrea M.; Duay, Jonathon W.; Kelly, Maria.K.; Habing, Rachel L.; Ricketts, Logan S.; Vigil, Julian A.; Gallaway, Joshua W.; Kolesnichenko, Igor K.; Budy, Stephen M.; Ruiz, Elijah I.; Yadav, Gautam G.; Weiner, Meir W.; Upreti, Aditya U.; Huang, Jinchao H.; Nyce, Michael N.; Turney, Damon T.; Banerjee, Sanjoy B.; Magar, Birendra A.; Paudel, Nirajan P.; Vasiliev, Igor V.; Spoerke, Erik D.; Chalamala, Babu C.

Abstract not provided.

3 Results
3 Results