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A High-Performance Solid-State Na–CO_(2)Battery with Poly(Vinylidene Fluoride-co-Hexafluoropropylene)−Na_(3.2)Zr_(1.9)mg_(0.1)Si_(2)PO_(12)Electrolyte

引用

Energy & Environmental Materials 2023年第3期6卷 87-95页

作者： Liang Lu Chunwen Sun Jian Hao Zelin Wang Sergio F.Mayer Maria Teresa Fernandez-Diıaz Jose Antonio Alonso Bingsuo Zou School of Chemical&Environmental Engineering China University of Mining and Technology-BeijingBeijing 100083China School of Physical Science and Technology Guangxi UniversityNanning 530004China State Key Laboratory of High-efficiency Utilization of Coal and Green Chemical Engineering Ningxia UniversityYinchuan 750021China Instituto de Ciencia de los Materiales de Madrid CSICE-28049Cantoblanco-MadridSpain Institut Laue Langevin Grenoble F-38042France 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 EducationSchool of ResourcesEnvironments and MaterialsGuangxi UniversityNanning 530004China

The recovery and utilization of carbon dioxide(CO_(2))is the key to achieve the targets of peak carbon dioxide emissions and carbon *** Na-CO_(2)battery made with cheap alkali metal sodium and greenhouse gas CO_(2)is an effective strategy to consume CO_(2)and store clean renewable ***,the liquid electrolyte volatilization in the open battery system and inevitable dendrite growth restrict the application of Na-CO_(2)*** this work,magnesium-doped Na_(3)Zr_(2)Si_(2)PO_(12)(nzsp)was studied as a solid electrolyte for solid-state Na-CO_(2)*** ionic conductivity of Na_(3.2)Zr_(1.9)mg_(0.1)Si_(2)PO_(12)reaches 1.16 mS cm^(−1)at room temperature by replacing Zr ions in Na_(3.2)Zr_(1.9)mg_(0.1)Si_(2)PO_(12)with mg ions,and the structural changes are analyzed by neutron powder *** composite electrolyte consisting of highly conductive Na_(3.2)Zr_(1.9)mg_(0.1)Si_(2)PO_(12)and high processability poly(vinylidene fluoride-co-hexafluoropropylene)(PVDF-HFP)is utilized for the first time to assemble a solid-state Na-CO_(2)*** 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-CO_(2)batteries.

关键词： cycling stability ion transport mg-doped nzsp neutron powder diffraction solid-state Na-CO_(2)batteries

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