Graphdiyne Oxide‐Based High‐Performance Rechargeable Aqueous Zn–MnO₂ Battery

Abstract

Designing materials and architectures for improving the performance of rechargeable aqueous Zn-MnO 2 battery has gained extensive interest. The main challenge is to retain high capacity, superior rate performance capability, and long-term stability capacity. This paper describes how a graphdiyne oxide (GDYO) membrane can endow Zn-MnO 2 batteries with high capacity, high rate capability, and long-term stability. The specific capacity of the modified battery reaches as high as 300 mA h g −1 at a current density of 308 mA g −1 over 50 cycles. Even at a high current density of 3080 mA g −1 , this Zn-MnO 2 battery exhibits a capacity of 100 mA h g −1 over 2000 cycles. Moreover, the effect of the GDYO membrane and the reaction mechanism is elucidated. The GDYO membrane allows the reversible stripping/plating of zinc ions to maintain a Coulombic efficiency of ≈100% for 800 h. Therefore, it is believed that the GDYO membrane ensures well-aligned ion transport and, thus, stabilizes the electrodes. This feasible approach toward Zn-MnO 2 batteries will open up alternative pathways for fabricating other high-performance Zn-ion batteries.

Constructing Advanced Aqueous Zinc‐Ion Batteries with 2D Carbon‐Rich Materials

“…Graphdiyne materials possess a series of features that are beneficial for AZIB fabrication: 1) expanded specific surface area that provides more active sites for chemical reaction; 2) enhanced conductivity that significantly increases the electron transportation; 3) uniform porous structure that effectively regulates the ion transportation; 4) intrinsic stability that offers robust protection to electrodes and separators against zinc dendrite and self‐dissolution; and 5) tunable structure and variable functional groups that make it possible to achieve rational design of battery components with desired functions. [ 24 ] The features mentioned above demonstrate the potential of graphdiyne materials as promising candidates for zinc‐ion energy storage devices. In this section, we review previous studies of graphdiyne‐based AZIBs where graphdiyne materials were applied to improve the performance of cathode, anode, and separator.…”

Electrochemical reaction behavior of MnS in aqueous zinc ion battery

“…3,4,14,18,27 Manganese oxides have been widely studied as zinc ion battery cathode materials and inspiring progress has been made. 4,14,[16][17][18][28][29][30][31] Most recently, MnS x , which is known as another important manganese-based compounds, has also been introduced in zinc ion batteries. 7,8,32,33 For instance, Chen et al activated Zn-inactive MnS by in situ electrochemically converting it into Mn oxides in zinc ion battery.…”

Achieving better aqueous rechargeable zinc ion batteries with heterostructure electrodes

“…MnO2@GDYO membrane EEI modification 300 at 0.308 ≈ 100 mAh•g −1 over 2,000 cycles at 3.08 A•g −1 [42] MnO2@rGO nanowires EEI modification 366 at 0.3 145.3 mAh•g −1 over 3,000 cycles 3 A•g −1 [43] HfO2 coated ZVO EEI modification 215 at 0.1 ≈ 70 mAh•g −1 over 1,000 cycles at 10 A•g −1 [40] α-MnO2@In2O3 EEI modification 425 at 0.1 75 mAh•g −1 over 3,000 cycles at 3.0 A•g −1 [44] VO2-PEDOT EEI modification 540 at 0.05 281 mAh•g −1 over 1,000 cycles at 5 A•g −1 [46] OD-ZMO-PEDOT EEI modification 221 at 0.5 mA•cm −2 93.8% capacity retention over 300 cycles at 8 mA•cm −1 [47] V2O5@PEDOT EEI modification 360 at 0.1 224 mAh•g −1 over 1,000 cycles at 5 A•g −1 [48] PPy-coated MnO2 EEI modification 223 at 0.3 ≈ 150 mAh•g −1 over 1,000 cycles at 1 A•g −1 [49] SSWM@Mn3O4 ECI modification 296 at 0.1 ≈ 150 mAh•g −1 over 500 cycles at 0.5 A•g −1 [51] V2O5-Ti ECI modification 503.1 at 0.1 224 mAh•g −1 over 700 cycles at 0.5 A•g −1 [53] NV NSs@ACC ECI modification 523 at 0.1 156 mAh•g −1 over 1,000 cycles at 2 A•g −1 [39] V6O13−δ/C ECI modification ≈ 400 at 0.2 93.4% capacity retention over 2,000 cycles at 10 A•g −1 [18] MnO2@carbon nanotube ECI modification 322 at 0.1 75% capacity retention over 300 cycles [54] Na1.1V3O7.9@rGO Structure optimization 220 at 0. AEC-Zn EEI modification 2,000 h at 0.9 mA•cm −2 [79] Zn@ZnO HPA EEI modification 1,000 h at 0.2 mA•cm −2 [81] 100TiO2@Zn EEI modification 140 h at 1 mA•cm −2 [80] Zn@rGO EEI modification 300 h at 1 mA•cm −2 [83] Graphene-coated stainless steel ECI modification 2,500 cycles at 40 mA•cm −2 [84] Mxenes-based anode ECI modification 400 h at 10 mA•cm −2 [86] Zn88Al12 alloys Structure optimization 2,000 h at 0.5 mA•cm −2 [87] from the side reaction between dissolved O2 and electrolyte, and the capacity of the reversible ZHS contributed to the total capacity of ZHS.…”

“…Recently, Liu and co-workers applied a graphdiyne oxide (GDYO) AIL on the surface of MnO2 cathode (Fig. 3(a)) [42]. Due to the 30-μm-thick GDYO layer possessed abundant hydrophilic functional groups, the proton-mediated reaction of MnO2 was promoted.…”