Multifunctional Sodium Gluconate Electrolyte Additive Enabling Highly Reversible Zn Anodes
Kang Zhao, Jianan Zhao, Meng Yu, Fangming Liu, Yang Dong, Shiwen Wang, Fangyi Cheng
Multifunctional Sodium Gluconate Electrolyte Additive Enabling Highly Reversible Zn Anodes
Sodium gluconate (SG) is reported as an electrolyte additive for rechargeable aqueous zinc batteries. The SG addition is proposed to modulate the nucleation overpotential and plating behaviors of Zn by forming a shielding buffer layer because of the adsorption priority and large steric hindrance effect, which contributes to limited rampant Zn2+ diffusion and mitigated hydrogen evolution and corrosion. With the introduction of 30 mmol/L SG in 2 mol/L ZnSO4 electrolyte, the Zn anode harvests a reversible cycling of 1200 h at 5 mA/cm2 and a high average Coulombic efficiency of Zn plating/stripping (99.6%). Full cells coupling Zn anode with V2O5·1.6H2O or polyaniline cathode far surpass the SG additivefree batteries in terms of cycle stability and rate capability. This work provides an inspiration for design of a high-effective and low-cost electrolyte additive towards Zn-based energy storage devices.
Electrolyte additive / Zn anode / Sodium gluconate / Adsorption / Zn dendrite
[1] |
|
[2] |
|
[3] |
|
[4] |
|
[5] |
|
[6] |
|
[7] |
|
[8] |
|
[9] |
|
[10] |
|
[11] |
|
[12] |
|
[13] |
|
[14] |
Li J., Rohrens D., Dalfollo G., Wu X., Lu Z., Gao Q., Han B., Sun R., Zhou C., Wang J., Cai Z., Nano Mater. Sci., 2023, DOI: https://doi.org/10.1016/j.nanoms.2023.11.004.
|
[15] |
|
[16] |
|
[17] |
|
[18] |
|
[19] |
|
[20] |
|
[21] |
|
[22] |
|
[23] |
|
[24] |
|
[25] |
|
[26] |
|
[27] |
|
[28] |
|
[29] |
|
[30] |
|
[31] |
|
[32] |
|
[33] |
|
[34] |
|
[35] |
|
[36] |
|
[37] |
|
[38] |
|
[39] |
|
[40] |
|
[41] |
|
[42] |
|
[43] |
|
[44] |
|
/
〈 | 〉 |