近日，实验室龙娅婷同学、李刚勇老师通过在电解质中添加氧化还原自由基2,2,6,6-四甲基哌啶氧基（TEMPO）和生物质葡萄糖，ZAB的充电电压可以降低到相似的2.6 V，具有相似的高能效的论文发表在ACS Sustainable Chemistry&Engineering.

Zn-air batteries (ZABs) are one of the promisingcandidatesof future energy storage technology owing to their advantages of hightheoretical energy density, high safety, and low cost. However, highvoltage polarization and low energy efficiency hinder their practicalapplications. Herein, we show that the charging voltage of a ZAB canbe reduced to similar to 1.6 V with a high energy efficiency of similar to 70%by adding a redox radical, 2,2,6,6-tetramethylpiperidinyloxyl (TEMPO),and a biomass, glucose, into the electrolyte. Upon charging, the oxidationof TEMPO forming the oxoammonium cation at the cathode catalyzes theoxidation of glucose to generate value-added derivatives. Operandodifferential electrochemical mass spectrometry, first principle calculations,and ex situ spectroscopic characterizations demonstrate the significanteffects of TEMPO and glucose on inhibiting side reactions and dendritegrowth of the Zn anode, which endow the TEMPO-mediated ZABs with long-termcharging/discharging cycles over 400 h.

论文题目：Reducing the Charging Voltage of a Zn-Air Battery to 1.6 V Enabled by Redox Radical-Mediated Biomass Oxidation.

论文作者：Gangyong Li,Yating Long,Zhi Li,Siping Li,Yan Zheng,Binhong He,Miao Zhou,Zongqiang Hu,Minjie Zhou,Zhaohui Hou.