Ultra-stable K metal anode enabled by oxygen-rich carbon cloth
作者机构：School of Metallurgy and EnvironmentCentral South UniversityChangsha410083China Contemporary Amperex Technology Co.Ltd.Ningde352100China
出 版 物：《Nano Research》 (纳米研究（英文版）)
年 卷 期：2020年第13卷第11期
页 面：3137-3141页
核心收录：
学科分类：0808[工学-电气工程] 0809[工学-电子科学与技术（可授工学、理学学位）] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 0702[理学-物理学]
基 金：supported by the Innovation Program of Central South University(No.2019zzts249) and the authors would like to appreciate Xiaobin Zhou for the help of XPS tests from Shiyanjia Lab(http://www.shiyanjia.com)
主 题：K metal anode dendrite oxygen-rich treated carbon cloth K-philic sites ultra-long-life
摘 要：The K metal batteries are emerged as promising alternatives beyond commercialized Li-ion ***,suppressing uncontrolled dendrite is crucial to the accomplishment of K metal ***,an oxygen-rich treated carbon cloth(TCC)has been designed as the K plating host to guide K homogeneous nucleation and suppress the dendrite *** density function theory calculations and experimental results demonstrate that abundant oxygen functional groups as K-philic sites on TCC can guide K nucleation and deposition *** a result,the TCC electrode exhibits an ultra-long-life over 800 cycles at high current density of 3.0 mA·cm^(−2)for 3.0 mA·h·cm^(−2).Furthermore,the symmetrical cells can run stably for 2,000 h with low over-potential less than 20 mV at 1.0 mA·cm^(−2)for 1.0 mA·h·cm^(−2).Even at a higher current of 5.0 mA·cm^(−2),the TCC electrode can still stably cycle for 1,400 h.
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