The battery's high energy density, economical price, and ecological sustainability of the Zn-air battery make it a bright future battery technology. However, parasitic reactions, which can diminish the battery's life cycle and efficacy, are the key challenges for potential development of Zn-air batteries. Glycyrrhiza glabra roots extract (GGRE) has been investigated as an alternative hydrogen gas evolution and corrosion inhibitor for Zn-air batteries in order to mitigate the parasitic reaction. The results obtained reveal that the inhibition capacity of the GGRE extract increases with concentration and reaches its highest level (75.6 %) around 350 mg l-1 of GGRE extract. GGRE extract is a mixed type inhibitor with a predominately cathodic effect based on the polarization data. The GGRE extract adsorption on the Zn surface complies with Freundlich isotherm. In comparison to the blank Zn-KOH (354 mAh g-1), the battery containing 350 mg l-1 GGRE extract has the highest discharge capacity (533 mAh g-1) and the best cyclability (92.9 % retention after 500 cycles). Overall, GGRE extract can significantly optimize the performance of Zn-air batteries.

中文翻译：

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植物提取物添加剂对碱性锌空气电池寄生反应的影响


Zn-air 电池的高能量密度、经济的价格和生态可持续性使其成为一种前景光明的电池技术。然而，寄生反应会降低电池的生命周期和功效，是 Zn-air 电池潜在发展的关键挑战。Glycyrrhiza glabra roots extract （GGRE） 已被研究作为 Zn-air 电池的替代氢气析出和腐蚀抑制剂，以减轻寄生反应。获得的结果表明，GGRE 提取物的抑制能力随着浓度的增加而增加，并在 350 mg l-1 GGRE 提取物左右达到最高水平 （75.6%）。GGRE 提取物是一种混合型抑制剂，基于极化数据，主要具有阴极效应。Zn 表面的 GGRE 提取物吸附符合 Freundlich 等温线。与空白的 Zn-KOH （354 mAh g-1） 相比，含有 350 mg l-1 GGRE 提取物的电池具有最高的放电容量 （533 mAh g-1） 和最佳的循环性（500 次循环后保留 92.9%）。总体而言，GGRE 提取物可以显着优化 Zn-air 电池的性能。