High-Performance Aqueous Zn Battery Based on MoS₂-Loaded MnO_2-@Carbon Aerogel

The MnO₂-based aqueous Zn cell can meet the requirements of safety, flexibility, and low cost for portable/wearable electronics; however, its low intrinsic conductivity, weak kinetics, and poor high-loading capacity restrict its practical performance. In this study, the synergistic architecture of MoS₂-loaded, oxygen-defect-rich MnO_2- nanocrystals with a carbon coating (M-PM_2--H₂ aerogel) was prepared. As corevealed by various characterizations, this synergistic design not only improves the electronic/ionic conductivity but also motivates the conversion kinetics of the surficial electrochemical reaction. As a result, the M-PM_2--H₂ cathode delivers a much improved capacity of 567 mA h·g^-1 at 0.1 A·g^-1 and shows a high capacity retention of 176% after 150 cycles at 0.5 A·g^-1. More impressively, the high areal loading (3.97 mg·cm^-1) of the M-PM_2--H₂ electrode also displays a high capacity of 367 mA h·g^-1 at 0.1 A·g^-1. In addition, the derived all-solid-state cell exhibits excellent flexibility and safety under the conditions of weight loading, cutting, and bending.