摘要
锌(Zn)因价格低廉、可逆容量高、过电位低以及环境友好等特点而被广泛用于电化学储能体系。然而,在充放电过程中,锌负极产生的枝晶以及迟滞电压过高,阻碍了锌负极材料的进一步发展。以具有多孔结构和良好热稳定性的Zn-MOFs(ZIF-8)为前驱体,制备了锡(Sn)金属纳米颗粒嵌在Zn-MOFs衍生多孔氮掺杂碳上的复合材料Sn/ZIF-8-500。基于Sn金属纳米颗粒良好的亲锌性以及多孔氮掺杂碳骨架与Sn金属纳米颗粒协同降低锌的成核过电位,以Sn/ZIF-8-500组装的对称电池,其迟滞电压相较于ZIF-8-500对称电池降低了106.5 mV。
Zinc metal,renowned for its low cost,high reversible capacity,low overpotential,and environmental friendliness,has been extensively utilized in aqueous electrochemical energy storage systems.However,its further development is impeded by the dendrite formation and high voltage hysteresis during the chargedischarge processes of the zinc anode.In light of this,we have prepared a composite material where tin metal nanoparticles are embedded in a porous nitrogen-doped carbon derived from Zn-MOFs(ZIF-8)precursor,denoted as Sn/ZIF-8-500.The good zincophilicity of the tin nanoparticles,along with the synergistic effect of the porous nitrogen-doped carbon framework and the tin nanoparticles to reduce the nucleation overpotential of zinc,has resulted in a symmetric cell assembled with Sn/ZIF-8-500,which exhibits a reduced hysteresis voltage of 106.5 mV compared to the ZIF-8-500 symmetric cell.
作者
李玙茜
张云逸
代新威
梅蕊
王勤
蔡东明
LI Yuxi;ZHANG Yunyi;DAI Xinwei;MEI Rui;WANG Qin;CAI Dongming(College of Chemistry and Environmental Engineering,Hanjiang Normal University,Shiyan 442000,China;Hubei Key Laboratory of Energy Storage and Power Battery,School of New Energy,Hubei University of Automotive Technology,Shiyan 442002,China;Shiyan Key Laboratory of Biological Resources and Eco‑environmental Protection(Hanjiang Normal University),Shiyan 442000,China;Hubei Wanrun New Energy Technology Co.,Ltd.,Shiyan 442500,China)
出处
《精细石油化工进展》
2025年第6期31-34,46,共5页
Advances in Fine Petrochemicals
基金
2023年大学生创新创业训练计划“MOF衍生的氮碳材料用于锌离子电池负极的研究”(202310518011)
2023年储能与动力电池湖北省重点实验室开放基金“ZIF-8衍生物用于构筑锌离子电池负极的研究”(ZDK22023B06)。
关键词
金属有机框架
置换反应
锡纳米颗粒
能源存储
电化学储能
锌负极
metal-organic framework
replacement reaction
tin nanoparticles
energy storage
electrochemical energy storage
zinc negative electrode
