Strongly coupled tungsten oxide/carbide heterogeneous hybrid for ultrastable aqueous rocking‐chair zinc-ion batteries

Cu7Te4 as an Anode Material and Zn Dendrite Inhibitor for Aqueous Zn‐Ion Battery

“…[40] After that, Na 0.14 TiS 2 was reported with a potential of 0.3 V (vs Zn 2+ /Zn), a capacity of 140 mA h g −1 , and excellent cycling stability over 5000 cycles. [41] Recently, a series of anode materials, such as Mobased oxides, [42][43][44] Cu-based compounds, [45][46][47][48] Ti-based MXene and oxides, [49][50][51] polymers, [52,53] and tungsten oxide/carbide heterogeneous, [54] have been developed and successfully applied in "rocking-chair" Zn-ion batteries. These reported anode materials can suppress the Zn dendrite information by employing the intercalation reaction mechanism, but their higher discharge potentials (0.3-0.6 V vs Zn 2+ /Zn) and lower capacities (<200 mA h g −1 ) than Zn (≈0 V vs Zn 2+ /Zn; 824 mA h g −1 ) drastically reduce the energy density of aqueous Zn batteries.…”

A strategy for anode modification for future zinc-based battery application

“…Furthermore, the ''rocking chair'' full batteries assembled with WO 3 /WC as the anode and MnO 2 /graphite as the cathode offer excellent capacity of 69 mA h g À1 at 0.1 A g À1 , capacity retention of 100% after 10 000 cycles, and an exceptional energy density of 85 W h kg À1 . 117 Equally, h-WO 3 /3DG, where 3DG stands for three-dimensional porous graphene, in the half batteries also showed excellent electrochemical performance with a high capacity of 115.6 mA h g À1 at 0.1 A g À1 and 89% capacity retention at 2.0 A g À1 after 10 000 cycles. As alternatives to Zn anodes, there is no doubt that they are suitable 127 (Fig.…”

Strategies of regulating Zn2+solvation structures for dendrite-free and side reaction-suppressed zinc-ion batteries

“…Up to now, numerous strategies for alleviating or inhibiting zinc dendrites and side reactions have been proposed, such as introducing protective layers on the zinc anode surface, 65–67 manipulating the crystallographic orientation of zinc deposition, 68,69 modifying the current collectors, 44,70,71 optimizing the internal structure of zinc anodes, 72,73 modifying the separators, 69,74,75 alloying zinc anodes with other chemically inert metals, 52,76 utilizing the zinc metal anode-free “Rocking-chair” batteries, 77,78 and optimizing the electrolytes. 17,79–82 Among these strategies, electrolyte engineering attracts much attention due to the features of facile preparation and cost-effectiveness, mainly including modifying the electrolyte composition, mixing some additives (solutes or solvents) and developing solid-state electrolytes.…”