A High-Performance Solid-State Na-CO2 Battery with Poly(Vinylidene Fluoride-co-Hexafluoropropylene)-Na3.2Zr1.9Mg0.1Si2PO12 Electrolyte

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外文摘要：The recovery and utilization of carbon dioxide(CO2)is the key to achieve the targets of peak carbon dioxide emissions and carbon neutrality.The Na-CO2 battery made with cheap alkali metal sodium and greenhouse gas CO2 is an effective strategy to consume CO2 and store clean renewable energy.However,the liquid electrolyte volatilization in the open battery system and inevitable dendrite growth restrict the application of Na-CO2 batteries.In this work,magnesium-doped Na3Zr2Si2PO12(NZSP)was studied as a solid electrolyte for solid-state Na-CO2 batteries.The ionic conductivity of Na3.2Zr1.9Mg0.1Si2PO12 reaches 1.16 mS cm-1 at room temperature by replacing Zr ions in Na3Zr2Si2PO12 with Mg ions,and the structural changes are analyzed by neutron powder diffraction.The composite electrolyte consisting of highly conductive Na3.2Zr1.9Mg0.1Si2PO12 and high processability poly(vinylidene fluoride-co-hexafluoropropylene)(PVDF-HFP)is utilized for the first time to assemble a solid-state Na-CO2 battery.The cell shows a full discharge capacity of 7720 mAh g-1 at 200 mA g-1.The middle gap voltage is lower than 2 V after 120 cycles at 200 mA g-1 and at a cut-off capacity of 500 mAh g-1.This work demonstrates a promising strategy to design high-performance solid-state Na-CO2 batteries.

外文关键词：

cycling stabilityion transportMg-doped NZSPneutron powder diffractionsolid-state Na-CO2 batteries

作者：

Liang Lu、Chunwen Sun、Jian Hao、Zelin Wang、Sergio F.Mayer、Maria Teresa Fernández-Díaz、José Antonio Alonso、Bingsuo Zou

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作者单位：

School of Chemical & Environmental Engineering,China University of Mining and Technology-Beijing,Beijing 100083,China

School of Physical Science and Technology,Guangxi University,Nanning 530004,China

State Key Laboratory of High-efficiency Utilization of Coal and Green Chemical Engineering,Ningxia University,Yinchuan 750021,China

Instituto de Ciencia de los Materiales de Madrid,CSIC,E-28049,Cantoblanco-Madrid,Spain

Institut Laue Langevin,Grenoble F-38042,France

Guangxi Key Lab of Processing for Nonferrous Metals and Featured Materials and Key lab of new Processing Technology for Nonferrous Metals and Materials,Ministry of Education,School of Resources,Environments and Materials,Guangxi University,Nanning 530004,China

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基金：

Foundation of State Key Laboratory of Highefficiency Utilization of Coal and Green Chemical EngineeringChina University of Mining & Technology(Beijing)Beijing National Laboratory for Condensed Matter Physics国家自然科学基金国家自然科学基金Spanish Ministry of Science,Innovation to the projectANPCyT,UNSL,ArgentineANPCyT,UNSL,Argentine

项目编号：

2022-K155167202951372271MAT2017-84496-RPICT2017-1842PROICO 2-2016

出版年：

2023

DOI：

10.1002/eem2.12364

能源与环境材料(英文)

CSCD

ISSN：

年,卷(期)：2023.6(3)

参考文献量45