| 论文简介 |
Rechargeable zinc-air batteries, with a high theoretical energy density and intrinsic safety, attract research interests and
have great development in recent years. However, hindered by the theoretical potential of 1.65 V, the working voltage is
hard to get further increased. In contrast, some conventional Zn-M batteries (M represents transition metal or metal
oxide/hydroxide) with low capacities can exhibit high working voltages due to the redox couples with high potentials (e.g.,
Zn-Ni battery). Thus, combined with Zn-air and Zn-M batteries, hybrid Zn batteries that can achieve both high energy
density and efficiency are proposed through using the electrode materials to link these two kinds of reactions. In this
report, three types of hybrid Zn batteries (i.e., Zn-Ni/air, Zn-Co/air, and Zn-Ag/air batteries) based on the positive
electrode materials are introduced in detail. The positive electrode materials and the achieved electrochemical
performance are summarized, and potential applications in electric vehicles and wearable electronics are discussed.
Moreover, perspectives on the electrode material optimization, reaction interface design, and operation management are
provided. This work gives a timely spotlight on hybrid Zn batteries, and may pave the way for further development of
novel electrochemical energy storage systems |
(创新港)
