Table 3.
Recent progress of bifunctional catalysts with their performance in ZABs
| Type | Electrolyte | Air electrode catalyst layer | Zn electrode | Open circuit voltage (V) | Discharge/charge voltage gap (V) | Peak power density (mW cm−2) | Specific capacity (mAh g−1) | Cyclic performance | References |
|---|---|---|---|---|---|---|---|---|---|
| A | 6 M KOH + 0.2 M Zn(CH3COO)2∙2H2O | N-CoS2 YSSs | Polished Zn foil | 1.41 | 0.85 @ 10 mA cm−2 | 81 | 744 |
More than 165 h @ 10 mA cm−2 |
[202] |
| A | 6.0 M KOH + 0.2 M Zn acetate | Porous Ni/NiO nanosheets | Zn plate | 1.47 | 0.83 @ 2 mA cm−2 | 225 | 853 |
240 cycles, 120 h @ 2 mA cm−2 |
[203] |
| A | poly(vinyl alcohol) (PVA) gel film | Spinel CoIn2Se4 nanosheets | Zn plate | 1.37 | 0.71 @ 10 mA cm−2 | 107 | 733 |
400 cycles @ 10 mA cm−2 |
[204] |
| A | 6 M KOH + 0.2 M Zn acetate | MnO2-IL0.5 | Polished Zn plates | 1.51 | 0.86 @ 10 mA cm−2 | 166 | 762 |
40 h @ 10 mA cm−2 |
[205] |
| A | KOH + Zn(Ac)2 | np-AlFeCoNiCr | Zn foil | 1.55 | 0.76 @ 2 mA cm−2 | 125 | 800 | 120 h @ 20 mA cm−2 | [206] |
| A,B | 6 M KOH + 0.2 M Zn(OAc)2 | Co3O4@LaCoO3 | Zn plate | 1.46 | – | 140 | 785 | 555 cycles, 185 h @ 2 mA cm−2 | [207] |
| A,B | 6 M KOH + 0.2 M Zn(OAc)2 | LaMnO3 | Zn foil | – | 0.82 @ 10 mA cm−2 | 170 | 725 | 100 cycles @ 5 mA cm−2 | [208] |
| A,B | 6 M KOH + 0.2 M Zn(OAc)2 | LaNi0.85Mg0.15O3 | Polished Zn foil | 1.35 | 0.92 @ 10 mA cm−2 | 45 | 810 | 220 cycles, 110 h @ 10 mA cm−2 | [209] |
| A,B | 6 M KOH + 0.2 M Zn(OAc)2 | Ba0.5Sr0.5Co0.8Fe0.2O3-δ (BSCF)-ceria (CeO2) | Zn foil | 1.62 | 0.83 @ 20 mA cm−2 | 131 | 716 | 180 cycles, 80 h @ 10 mA cm−2 | [210] |
| A,B,C,D | 6 M KOH + 0.2 M ZnCl2 | Pt-Sr(Co0.8Fe0.2)0.95P0.05O3−δ (SCFP)/Super P | Zn plate | 1.44 | 0.86 @ 5 mA cm−2 | 122 | 790.4 |
240 cycles, 80 h @ 5 mA cm−2 |
[100] |
| A,B,C,D | 6 M KOH + 0.2 M Zn(OAc)2 | LaMn0.7Co0.3O3 (LMCO) | Zn foil | 1.40 | 0.77 @ 1 mA cm−2 | 35 | 764 | 90 cycles, 30 h @ 5 mA cm−2 | [211] |
| A,B,C,D | 6 M KOH + 0.2 M Zn(OAc)2 | Ni3FeN/V@N-doped graphene | Polished Zn foil | 1.52 | 0.92 @ 10 mA cm−2 | 168 | 650 | 150 cycles, 220 h @ 10 mA cm−2 | [212] |
| A,C,D | 6 M KOH | Fe@N–C-700 | Zn plate | 1.40 | – | 220 | – |
100 cycles, 16.7 h @ 10 mA cm−2 |
[213] |
| A,C,D | 6 M KOH + 0.2 M Zn(CH3COO)2 | NCO@HHPC | Zn plate | 1.48 | 0.73 @ 10 mA cm−2 | 267 | 767 |
1460 cycles, 487 h @ 10 mA cm−2 |
[214] |
| A,C,D | 6 M KOH + 0.2 M Zn acetate | Co5.47N@N-rGO-750 | Zn plate | 1.45 | 0.77 @ 1 mA cm−2 | 121 | 789 |
2000 cycles, 330 h @ 1 mA cm−2 |
[215] |
| A,C,D | 6 M KOH + 0.2 M Zn(Ac)2 | FeNiP/NPCS | Polished Zn plate | 1.51 | 0.58 @ 10 mA cm−2 | 163 | 603 |
330 cycles, 110 h @ 10 mA cm−2 |
[216] |
| A,C,D | 6 M KOH/0.2 M Zn(ac)2 mixed solution | Ni–Co–S/NSC | Zn plate | 1.43 | 0.73 @ 10 mA cm−2 | 137 | 829 |
180 cycles @ 10 mA cm−2 |
[217] |
| A,C,D | 6 M KOH + 0.2 M Zn(CH3COO)2 | GNCNTs-4 | Polished Zn foil | 1.48 | 0.76 @ 5 mA cm−2 | 253 | 801 |
9000 cycles, 3000 h @ 5 mA cm−2 |
[218] |
| A,C,D | 6.0 M KOH + 0.2 M Zn(Ac)2 | Ni1Co3@N–CN | Zn foil | 1.446 | 0.71 @ 5 mA cm−2 | 98.2 | 721.6 |
200 h @ 5 mA cm−2 |
[219] |
| A,C,D | 6.0 M KOH + 0.2 M zinc acetate | NCNTM | Zn foil | 1.5 | 0.8 @ 5 mA cm−2 | 220 | 797 |
4800 cycles, 1600 h @ 5 mA cm−2 |
[220] |
| A,C,D | 6 M KOH + 0.2 M Zn(Ac)2 | Co-Co3O4@NAC | Polished Zn plate | 1.45 | 0.77 @ 10 mA cm−2 | 164 | 721 |
35 h @ 10 mA cm−2 |
[97] |
| A,C,D | 6 M KOH + 0.2 M ZnCl2 | Fe,Co-SA/CS | Polished Zn plate | 1.43 | 0.88 @ 5 mA cm−2 | 86.7 | 819.6 |
300 cycles, 100 h @ 5 mA cm−2 |
[221] |
| A,C,D | 6 M KOH + 0.2 M ZnCl2 | Fe-Nx-HCS | Polished Zn plate | 1.42 | 1 @ 10 mA cm−2 | 154 | 422 |
58 h @ 10 mA cm−2 |
[222] |
| A,C,D | 6.0 mol L−1 KOH + 0.2 mol L−1 Zn acetate | CoSe2@NC loaded on Ni foam | Polished Zn plates | 1.48 | 0.93 @ 10 mA cm−2 | 137.1 | 751.1 |
500 cycles @ 10 mA cm−2 |
[223] |
| A,C,D | 6 M KOH + 0.2 M Zn (AC)2 | CoFe@NC/KB-800 | Zn foil | 1.351 | 0.65 @ 2 mA cm−2 | 160 | 654 |
600 cycles, 100 h @ 2 mA cm−2 |
[224] |
| A,C,D | 0.2 M Zn(CH3COO)2 + 6 M KOH | MDPCF-based ZAB | Zn foil | 1.48 | – | 288.8 | 740 |
330 h @ 10 mA cm−2 |
[225] |
| A,C,D | 6 M KOH | CoP/NP-HPC | Zn plate | 1.4 | – | 186 | – |
80 h @ 2 mA cm−2 |
[226] |
| A,C,D | 6 M KOH + 0.2 M zinc acetate | RuCoOx@Co/N-CNT | Polished Zn plates | 1.44 | 0.79 @ 2 mA cm−2 | 93 | 788 |
200 cycles, 34 h @ 2 mA cm−2 |
[227] |
| A,C,D | 6 M KOH + 0.2 M Zn acetate | P,S-CNS | Polished Zn plates | 1.51 | – | 198 | 830 |
200 cycles, 40 h @ 2 mA cm−2 |
[228] |
| A,C,D | 6 M KOH + 0.2 M Zn(OAc)2 | MnCo2O4@C | Polished Zn plate | 1.43 | 0.72 @ 5 mA cm−2 | 40 | – |
70 h @ 10 mA cm−2 |
[229] |
| A,C,D |
6 M KOH + 0.2 M Zn(CH3COO)2 |
Co/Co3O4@PGS | Zn plate | 1.45 | 0.96 @ 20 mA cm−2 | 118.27 | – |
4800 cycles, 800 h @ 10 mA cm−2 |
[136] |
| A,C,D | 6 M KOH + 0.2 M ZnCl2 | Fe0.5Co0.5Ox/NrGO | Zn plate | 1.43–1.44 | 0.89 @ 10 mA cm−2 | 86 | 756 |
120 h @ 10 mA cm−2 |
[230] |
| A,C,D |
6 M KOH + 0.2 M zinc acetate |
Janus NiFe@C@Co CNFs | Polished Zn foil | 1.44 | 0.77 @ 5 mA cm−2 | 130 | 694 | 200 h @ 5 mA cm−2 | [231] |
| A,C,D |
6 M KOH + 0.2 M ZnCl2 |
FeCo@NC-d | Zn plate | 1.456 | 0.79 @ 5 mA cm−2 | 190.2 | – | 120 cycles @ 5 mA cm−2 | [232] |
| A,C,D |
6 M KOH + 0.2 M ZnO |
CuCo2O4@CNTs | Zn plate | 1.41 | 0.79 @ 10 mA cm−2 | – | – | 160 cycles, 80 h @ 2 mA cm−2 | [233] |
| A,C,D | 6 M KOH + 0.2 M Zn(CH3COO)2 | Fe2Ni@NC | Zn plate | 1.493 | 0.805 @ 50 mA cm−2 | 126 | – | 500 cycles @ 10 mA cm−2 | [234] |
| A,C,D | KOH/Zn(Ac)2 | CoNi@CoCN | Zn plate | 1.498 | – | 162.5 | 773.5 | 200 cycles | [235] |
| A,C,D |
6 M KOH + 0.2 M Zn(CH3COO)2 |
NPSC-Co2Fe1 | Zn foil | 1.44 | 0.96 @ 10 mA cm−2 | 174.6 | – | 210 cycles, 70 h @ 5 mA cm−2 | [236] |
| A,C,D |
6 M KOH + 0.2 M ZnCl2 |
CoSx/Co-NC-800 | Zn foil | 1.40 | 0.73 @ 2 mA cm−2 | 103 | 770.4 | 450 cycles, 90 h @ 5 mA cm−2 | [237] |
| A,C,D | 6 M KOH + 0.2 M Zn(OAc)2 | FeCo–N–C-700 | Tailored Zn plate | 1.39 | – | 150 | 518 | 360 cycles, 60 h @ 1 mA cm−2 | [238] |
A: Bifunctional oxygen electrocatalyst, B: Perovskite oxides as electrocatalysts, C: Carbon-based electrocatalysts, D: Hybrid/mixed electrocatalysts