电池(电)
碱金属
功率密度
价值(数学)
功率(物理)
酸值
汽车工程
材料科学
环境科学
化学
无机化学
电气工程
化学工程
计算机科学
工程类
有机化学
热力学
物理
机器学习
作者
Ximeng Yin,Wei Sun,Kai Chen,Zhiwen Lu,Junxiang Chen,Pingwei Cai,Zhenhai Wen
标识
DOI:10.1002/advs.202402343
摘要
Abstract Rechargeable Zn–air batteries (ZABs) are considered highly competitive technologies for meeting the energy demands of the next generation, whether for energy storage or portable power. However, their practical application is hindered by critical challenges such as low voltage, CO 2 poisoning at the cathode, low power density, and poor charging efficiency Herein, a rechargeable hybrid alkali/acid Zn–air battery (h‐RZAB) that effectively separates the discharge process in an acidic environment from the charging process in an alkaline environment, utilizing oxygen reduction reaction (ORR) and glycerol oxidation reaction (GOR) respectively is reported. Compared to previously reported ZABs, this proof‐of‐concept device demonstrates impressive performance, exhibiting a high power density of 562.7 mW cm −2 and a high operating voltage during discharging. Moreover, the battery requires a significantly reduced charging voltage due to the concurrent utilization of biomass‐derived glycerol, resulting in practical and cost‐effective advantages. The decoupled system offers great flexibility for intermittently generated renewable power sources and presents cost advantages over traditional ZABs. As a result, this technology holds significant promise in opening avenues for the future development of renewable energy‐compatible electrochemical devices.
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