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Regulated Zn Plating and Stripping by a Multifunctional Polymer-Alloy Interphase Layer for Stable Zn Metal Anode
Advanced Science ( IF 14.3 ) Pub Date : 2023-08-13 , DOI: 10.1002/advs.202303343 Junwen Duan 1 , Jiaming Dong 1 , Ruirui Cao 1 , Hao Yang 1 , Kangkang Fang 1 , Ying Liu 1 , Zhitao Shen 1 , Fumin Li 1 , Rong Liu 1 , Huilin Li 1 , Chong Chen 1, 2
Advanced Science ( IF 14.3 ) Pub Date : 2023-08-13 , DOI: 10.1002/advs.202303343 Junwen Duan 1 , Jiaming Dong 1 , Ruirui Cao 1 , Hao Yang 1 , Kangkang Fang 1 , Ying Liu 1 , Zhitao Shen 1 , Fumin Li 1 , Rong Liu 1 , Huilin Li 1 , Chong Chen 1, 2
Affiliation
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Metallic zinc electrode with a high theoretical capacity of 820 mAh g−1 is highly considered as a promising candidate for next-generation rechargeable batteries. However, the unavoidable hydrogen evolution, uncontrolled dendrite growth, and severe passivation reaction badly hinder its practical implementations. Herein, a robust polymer-alloy artificial protective layer is designed to realize dendrite-free Zn metal anode by the integration of zincophilic SnSb nanoparticles with Nafion. In comparison to the bare Zn electrode, the Nafion-SnSb coated Zn (NFSS@Zn) electrode exhibits lower nucleation energy barrier, more uniform electric field distribution and stronger anti-corrosion capability, thus availably suppressing the Zn dendrite growth and interfacial side reactions. As a consequence, the NFSS@Zn electrode exhibits a long cycle life over 1500 h at 1 mA cm−2 with an ultra-low voltage hysteresis (25 mV). Meanwhile, when paired with a MnO2 cathode, the as-prepared full cell also demonstrates stable performance for 1000 cycles at 3 A g−1. This work provides an inspired approach to boost the performance of Zn anodes.
中文翻译：
通过多功能聚合物合金界面层调节锌镀层和脱镀以获得稳定的锌金属阳极
金属锌电极具有820 mAh g -1的高理论容量，被高度认为是下一代可充电电池的有希望的候选者。然而，不可避免的析氢、不受控制的枝晶生长和严重的钝化反应严重阻碍了其实际应用。在此，设计了坚固的聚合物合金人工保护层，通过将亲锌 SnSb 纳米粒子与 Nafion 集成来实现无枝晶的锌金属阳极。与裸锌电极相比，Nafion-SnSb涂层锌（NFSS@Zn）电极具有更低的成核能垒、更均匀的电场分布和更强的耐腐蚀能力，从而有效地抑制了锌枝晶的生长和界面副反应。因此，NFSS@Zn电极在1 mA cm -2下表现出超过1500小时的长循环寿命，并具有超低电压迟滞（25 mV）。同时，当与MnO 2正极配对时，所制备的全电池在3 A g -1下也表现出1000次循环的稳定性能。这项工作为提高锌阳极的性能提供了一种受启发的方法。
更新日期：2023-08-13
中文翻译：
通过多功能聚合物合金界面层调节锌镀层和脱镀以获得稳定的锌金属阳极
金属锌电极具有820 mAh g -1的高理论容量，被高度认为是下一代可充电电池的有希望的候选者。然而，不可避免的析氢、不受控制的枝晶生长和严重的钝化反应严重阻碍了其实际应用。在此，设计了坚固的聚合物合金人工保护层，通过将亲锌 SnSb 纳米粒子与 Nafion 集成来实现无枝晶的锌金属阳极。与裸锌电极相比，Nafion-SnSb涂层锌（NFSS@Zn）电极具有更低的成核能垒、更均匀的电场分布和更强的耐腐蚀能力，从而有效地抑制了锌枝晶的生长和界面副反应。因此，NFSS@Zn电极在1 mA cm -2下表现出超过1500小时的长循环寿命，并具有超低电压迟滞（25 mV）。同时，当与MnO 2正极配对时，所制备的全电池在3 A g -1下也表现出1000次循环的稳定性能。这项工作为提高锌阳极的性能提供了一种受启发的方法。
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