Nano Research ( IF 9.5 ) Pub Date : 2023-01-17 , DOI: 10.1007/s12274-022-5325-z Junmin Ge , Yaoyang Zhang , Zhengkun Xie , Huabin Xie , Weihua Chen , Bingan Lu
The urgent need for highly safe and sustainable large-scale energy storage systems for residential buildings has led to research into aqueous zinc ion batteries. However, when zinc is used in aqueous zinc ion batteries, it suffers from severe irreversibility due to its low Coulombic efficiency, dendrite growth, and side reactions. To address these challenges, we take advantage of organic cation to induce trifluoromethanesulfonate decomposition to build zinc fluoride/zinc sulfide-rich solid electrolyte interphase (SEI) that not only can adapt to a high areal capacity of deposition/stripping disturbance but also adjust zinc ion deposition path to eliminate dendrite. As a result, the unique interface can promote the Zn battery to achieve excellent electrochemical performance: high levels of plating/stripping Coulombic efficiency (99.8%), stability life (6,600 h), and cumulative capacity (66,000 mAh·cm−2) at 68% zinc utilization (20 mAh·cm−2). More importantly, the SEI significantly enhances the cyclability of full battery under limited Zn, lean electrolyte, and high areal capacity cathode conditions.
中文翻译:
用于可逆水性锌电池的定制富 ZnF2/ZnS 界面
住宅建筑对高度安全和可持续的大型储能系统的迫切需求导致了对水系锌离子电池的研究。然而,当锌用于水系锌离子电池时,由于其低库仑效率、枝晶生长和副反应,它存在严重的不可逆性。为了应对这些挑战,我们利用有机阳离子诱导三氟甲磺酸盐分解来构建富含氟化锌/硫化锌的固体电解质界面(SEI),它不仅可以适应高面积沉积/剥离干扰容量,还可以调节锌离子沉积路径以消除枝晶。因此,独特的界面可以促进锌电池实现优异的电化学性能:高水平的电镀/剥离库仑效率(99.8%),-2 ) 在68% 的锌利用率(20 mAh·cm -2 )。更重要的是,SEI 显着提高了全电池在有限锌、贫电解质和高面积容量阴极条件下的循环能力。