Zinc–iodine rechargeable batteries provide inherent security and considerable reserves, making them promising for power storage functions. Nonetheless, the poor interfacial stability of the zinc anode and the shuttle impact, each attributable to the diffusion of soluble polyiodides in aqueous media, considerably compromise machine stability, particularly at excessive mass loadings. This work proposes a complementary chemical adsorption technique to attain high-loading zinc–iodine batteries, using a composite materials of Ti3C2Tx MXene and carboxylated multi-walled carbon nanotubes (c-MCNTs) as an iodine provider. Carboxylated multi-walled carbon nanotubes (c-MCNTs) kind C–I bonds with preliminary I− ions by means of chemical interactions, whereas Ti3C2Tx MXene successfully chemically adsorbs the byproduct I3− ions shaped throughout charging and discharging, enabling the adsorption of a considerable quantity of iodine species. Due to this fact, even at a excessive areal mass loading of 33.27 mg cm−2, the ready zinc–iodine battery delivers a excessive areal capability of two.82 mAh cm−2 at a present density of 5 mA cm−2, surpassing most beforehand reported zinc–iodine batteries, whereas sustaining wonderful biking stability with a capability retention of 99.04% after 300 cycles. Furthermore, it displays excellent fee efficiency, retaining an areal capability of 1.52 mAh cm−2 even at a excessive present density of fifty mA cm−2. This technique can be doubtlessly extendable to the design of different high-loading steel–iodine batteries.
