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Realizing high zinc reversibility in rechargeable batteries
Nature Energy ( IF 56.7 ) Pub Date : 2020-08-14 , DOI: 10.1038/s41560-020-0674-x
Lin Ma , Marshall A. Schroeder , Oleg Borodin , Travis P. Pollard , Michael S. Ding , Chunsheng Wang , Kang Xu

Rechargeable zinc metal batteries (RZMBs) offer a compelling complement to existing lithium ion and emerging lithium metal batteries for meeting the increasing energy storage demands of the future. Multiple recent reports have suggested that optimized electrolytes resolve a century-old challenge for RZMBs by achieving extremely reversible zinc plating/stripping with Coulombic efficiencies (CEs) approaching 100%. However, the disparity among published testing methods and conditions severely convolutes electrolyte performance comparisons. The lack of rigorous and standardized protocols is rapidly becoming an impediment to ongoing research and commercialization thrusts. This Perspective examines recent efforts to improve the reversibility of the zinc metal anode in terms of key parameters, including CE protocols, plating morphology, dendrite formation and long-term stability. Then we suggest the most appropriate standard protocols for future CE determination. Finally, we envision future strategies to improve zinc/electrolyte stability so that research efforts can be better aligned towards realistic performance targets for RZMB commercialization.



中文翻译:

在充电电池中实现高锌可逆性

可充电锌金属电池(RZMB)为现有锂离子电池和新兴锂金属电池提供了引人注目的补充,可以满足未来不断增长的储能需求。最近的多项报道表明,优化的电解质通过实现极为可逆的镀锌/剥离,库仑效率(CE)接近100%,解决了RZMB的一个世纪挑战。但是,已发布的测试方法和条件之间的差异严重困扰着电解质性能的比较。缺乏严格和标准化的协议正迅速成为正在进行的研究和商业化努力的障碍。本《观点》从关键参数(包括CE协议,镀层形态,枝晶的形成和长期稳定性。然后,我们建议最合适的标准协议以用于将来的CE确定。最后,我们设想了改善锌/电解质稳定性的未来策略,以便使研究工作能够更好地与RZMB商业化的实际性能目标保持一致。

更新日期:2020-08-14
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