Advancements in silicon-air batteries:High performance asymmetric-electrolyte and quasi-solid-state designs for portable applications  

作　　者：Shengcui Pang Junjie Wang Baoling Wang Mingshan Zhu Guangzhi Hu Haijiao Xie Sujuan Hu 

机构地区：[1]Yunnan Key Laboratory of Metal-Organic Molecular Materials and Device,School of Chemistry and Chemical Engineering,Kunming University,Kunming,China [2]College of Environment and Climate,Jinan University,Guangzhou,China [3]Institute for Ecological Research and Pollution Control of Plateau Lakes,Yunnan University,Kunming,China [4]Hangzhou Yanqu Information Technology Co.,Ltd.,Hangzhou,Zhejiang,China

出　　处：《Carbon Energy》2025年第2期98-108,共11页碳能源(英文)

基　　金：National Natural Science Foundation of China,Grant/Award Number:62264006。

摘　　要：Silicon-air batteries(SABs)hold significant potential as efficient energy conversion devices due to their high theoretical energy density,theoretical discharge voltage,and favorable energy-to-cost ratios.However,their applicability has been hindered by low output discharge potential,high discharge polarizations,and singular aqueous configuration.To address these,the catalyst with faster oxygen reduction reaction(ORR)kinetic rate,nitrogen-doped carbon materials functionalized with FeMo metal clusters(FeMo-NC),was designed in acid electrolyte and thus high output voltage and energy density SABs with asymmetric-electrolytes have been developed.This innovative design aligns the reaction rates of the cathode and anode in SABs,achieving stable discharge around 1.7 V for 188 h.Furthermore,an all-in-one quasisolid-state SAB(QSSSAB)was first developed using a suitable acid-base gel electrolyte.This all-in-one QSSSAB showcases good safety,low cost,and portability,with open-circuit voltage of 1.6 V and energy density of 300.2 Wh kg^(-1),surpassing the energy density of most previously reported aqueous SABs.In terms of application,these compact all-in-one QSSSABs can provide stable and reliable power support for portable small electronic devices(such as electronic players,diodes,and electronic watches).

关 键 词：ALL-IN-ONE asymmetric-electrolytes high output voltage quasi-solid-state silicon-air batteries 

分 类 号：TM911.1[电气工程—电力电子与电力传动]