Understanding the Reversible Reactions of Li-N-2 Battery Catalyzed With SnO2
作者:
Meng, FB (Meng, Fanbo) [1] ; Qin, JY (Qin, Jiayao) [1] ; Xiong, XY (Xiong, Xingyu) [1] ; Li, XJ (Li, Xiangjie) [1] ; Hu, RZ (Hu, Renzong) [1]
ENERGY & ENVIRONMENTAL MATERIALS
DOI10.1002/eem2.12298
在线发表MAR 2022
已索引2022-03-30
文献类型Article; Early Access
摘要
Metal-N-2 battery can be applied in both energy storage and electrochemical nitrogen reduction reaction (NRR); however, there has been only extraordinarily little study on metal-N-2 battery since its electrochemical reversibility still needs further proofs. And its electrochemical performances also need to be enhanced. Herein, we investigated the discharge-charge reactions between Li anode and N-2 cathode via designing an efficient catalyst of nanosized SnO2 particles dispersed on N-doped carbon nanosheets (SnO2@NC) for the Li-N-2 battery, with good cyclic stability and a high specific capacity of 0.25 mA h (similar to 500 mA h g(-1)) at a large current density of 1000 mA g(-1). The electrochemical reversibility of both NRR in the discharge process and nitrogen extraction reaction in the charge process for Li-N-2 battery is discussed. Time-of-flight secondary ion mass spectrometry results imply that the SnO2@NC can effectively promote the adsorption of N-2 and the activation of NRR in the discharge process. Furthermore, ex situ X-ray photoelectron spectroscopy and Fourier transform infrared tests are performed to study the electrochemical reversibility of Li-N-2 battery. It can be proved that the formation and decomposition of discharging product Li3N are electrochemical reversible during cycling in our deigned Li-N-2 battery system with SnO2@NC catalyst.
关键词
作者关键词Li-N-2 batteriesnitrogen reduction reactionreversible energy conversionSnO2
Keywords PlusAIR BATTERIESENERGYCATHODE
作者信息
通讯作者地址
Hu, Renzong
(通讯作者)
South China Univ Technol, Sch Mat Sci & Engn, Guangdong Prov Key Lab Adv Energy Storage Mat, Guangzhou 510640, Peoples R China
地址
1 South China Univ Technol, Sch Mat Sci & Engn, Guangdong Prov Key Lab Adv Energy Storage Mat, Guangzhou 510640, Peoples R China
电子邮件地址msrenzonghu@scut.edu.cn
类别/分类
研究方向Materials Science