Abstract：
Rechargeable aqueous zinc-ion batteries (AZIBs) are gaining recognition as promising next-generation energy storage solution, due to their intrinsic safety and low cost. Nevertheless, the advancement of AZIBs is greatly limited by the abnormal growth of zinc dendrites during cycling. Electrolyte additives are effective at suppressing zinc dendrites, but there is currently no effective additive screening criterion. Herein, we propose employing the interfacial electrostatic adsorption strength of zinc ions for the initial screening of additives. Subsequently, dendrite-free plating is achieved by employing the anionic surfactant sodium dodecyl benzenesulfonate (SDBS) to enhance electrostatic adsorption. The cycled zinc anode exhibited a dense plating morphology and a high (002) orientation (I002/I101 = 22). The Zn||MnO2 full cell with SDBS exhibited a capacity retention of 85% after 1000 cycles at 1 A g-1. Furthermore, an instantaneous nucleation model and continuous nucleation model (CNM) are constructed to reveal the microscale plating/stripping dynamics under the scenarios of weak adsorption and strong adsorption. The CNM accurately explains the self-optimizing reconstruction of electrodes resulting from enhanced electrostatic adsorption. Our exploration was extended to other anionic surfactants (sodium dodecyl sulfate and disodium laureiminodipropionate), confirming the effectiveness of strong electrostatic adsorption in the screening of electrolyte additives.
摘要：
可充电水性锌离子电池（AZIBs）被公认为有前途的下一代储能解决方案，由于其本质安全性和低成本。然而，AZIB的发展受到锌枝晶在循环过程中的异常生长的极大限制。电解质添加剂能有效抑制锌枝晶，但目前尚无有效的添加剂筛选标准。在这里，我们建议采用锌离子的界面静电吸附强度进行添加剂的初步筛选。随后，通过使用阴离子表面活性剂十二烷基苯磺酸钠（SDBS）来增强静电吸附，可以实现无枝晶电镀。循环的锌阳极表现出致密的镀层形态和高（002）取向（I002/I101=22）。具有SDBS的Zn||MnO2全电池在1Ag-1下进行1000次循环后表现出85％的容量保留。此外，建立了瞬时成核模型和连续成核模型（CNM），以揭示弱吸附和强吸附情况下的微尺度电镀/剥离动力学。CNM准确地解释了由增强的静电吸附产生的电极的自优化重建。我们的探索扩展到其他阴离子表面活性剂（十二烷基硫酸钠和月桂基二丙酸二钠），证实了强静电吸附在电解质添加剂筛选中的有效性。
