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首页> 外文期刊>Advanced Functional Materials >Low Resistance-Integrated All-Solid-State Battery Achieved by Li_7La_3Zr_2O_(12) Nanowire Upgrading Polyethylene Oxide (PEO) Composite Electrolyte and PEO Cathode Binder
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Low Resistance-Integrated All-Solid-State Battery Achieved by Li_7La_3Zr_2O_(12) Nanowire Upgrading Polyethylene Oxide (PEO) Composite Electrolyte and PEO Cathode Binder

机译：Li_7La_3Zr_2O_（12）纳米线提升聚环氧乙烷（PEO）复合电解质和PEO阴极粘结剂的低电阻集成全固态电池

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摘要

All-solid-state lithium metal battery is the most promising next-generation energy storage device. However, the low ionic conductivity of solid electrolytes and high interfacial impedance with electrode are the main factors to limit the development of all-solid-state batteries. In this work, a low resistance-integrated all-solid-state battery is designed with excellent electrochemical performance that applies the polyethylene oxide (PEO) with lithium bis(trifluoromethylsulphonyl)imide as both binder of cathode and matrix of composite electrolyte embedded with Li7La3Zr2O12 (LLZO) nanowires (PLLN). The PEO in cathode and PLLN are fused at high temperature to form an integrated all-solid-state battery structure, which effectively strengthens the interface compatibility and stability between cathode and PLLN to guarantee high efficient ion transportation during long cycling. The LLZO nanowires uniformly distributed in PLLN can increase the ionic conductivity and mechanical strength of composite electrolyte efficiently, which induces the uniform deposition of lithium metal, thereby suppressing the lithium dendrite growth. The Li symmetric cells using PLLN can stably cycle for 1000 h without short circuit at 60 degrees C. The integrated LiFePO4/PLLN/Li batteries show excellent cycling stability at both 60 and 45 degrees C. The study proposed a novel and robust battery structure with outstanding electrochemical properties.
机译：全固态锂金属电池是最有前途的下一代储能设备。然而，固体电解质的低离子电导率和与电极的高界面阻抗是限制全固态电池发展的主要因素。在这项工作中，设计了一种具有出色的电化学性能的低电阻集成全固态电池，该技术将聚环氧乙烷（PEO）与双（三氟甲基磺酰基）酰亚胺锂一起用作阴极粘合剂和嵌入Li7La3Zr2O12的复合电解质基质（ LLZO）纳米线（PLLN）。阴极和PLLN中的PEO在高温下融合，形成一个集成的全固态电池结构，从而有效地增强了阴极和PLLN之间的界面兼容性和稳定性，从而确保了长周期内高效的离子传输。均匀分布在PLLN中的LLZO纳米线可以有效地提高复合电解质的离子电导率和机械强度，从而诱导锂金属的均匀沉积，从而抑制锂枝晶的生长。使用PLLN的Li对称电池可以在60摄氏度下稳定循环1000小时，而不会发生短路。集成的LiFePO4 / PLLN / Li电池在60摄氏度和45摄氏度下均表现出出色的循环稳定性。研究提出了一种新颖而坚固的电池结构出色的电化学性能。

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  • 来源
    《Advanced Functional Materials》 |2019年第1期|1805301.1-1805301.10|共10页
  • 作者

    Wan Zipei; Lei Danni; Yang Wei; Liu Cheng; Shi Kai; Hao Xiaoge; Shen Lu; Lv Wei; Li Baohua; Yang Quan-Hong; Kang Feiyu; He Yan-Bing;

  • 作者单位

    Tsinghua Univ, Engn Lab, Next Generat Power & Energy Storage Batteries Gra, Shenzhen 518055, Peoples R China|Tsinghua Univ, Sch Mat Sci & Engn, Adv Mat Lab, Beijing 100084, Peoples R China;

    Tsinghua Univ, Engn Lab, Next Generat Power & Energy Storage Batteries Gra, Shenzhen 518055, Peoples R China|Tsinghua Univ, Sch Mat Sci & Engn, Adv Mat Lab, Beijing 100084, Peoples R China;

    Tsinghua Univ, Engn Lab, Next Generat Power & Energy Storage Batteries Gra, Shenzhen 518055, Peoples R China;

    Tsinghua Univ, Engn Lab, Next Generat Power & Energy Storage Batteries Gra, Shenzhen 518055, Peoples R China|Tsinghua Univ, Sch Mat Sci & Engn, Adv Mat Lab, Beijing 100084, Peoples R China;

    Tsinghua Univ, Engn Lab, Next Generat Power & Energy Storage Batteries Gra, Shenzhen 518055, Peoples R China|Tsinghua Univ, Sch Mat Sci & Engn, Adv Mat Lab, Beijing 100084, Peoples R China;

    Tsinghua Univ, Engn Lab, Next Generat Power & Energy Storage Batteries Gra, Shenzhen 518055, Peoples R China|Tsinghua Univ, Sch Mat Sci & Engn, Adv Mat Lab, Beijing 100084, Peoples R China;

    Tsinghua Univ, Engn Lab, Next Generat Power & Energy Storage Batteries Gra, Shenzhen 518055, Peoples R China;

    Tsinghua Univ, Engn Lab, Next Generat Power & Energy Storage Batteries Gra, Shenzhen 518055, Peoples R China;

    Tsinghua Univ, Engn Lab, Next Generat Power & Energy Storage Batteries Gra, Shenzhen 518055, Peoples R China;

    Tianjin Univ, Sch Chem Engn & Technol, Nanoyang Grp, Tianjin 300072, Peoples R China|Collaborat Innovat Ctr Chem Sci & Engn Tianjing, Tianjin 300072, Peoples R China;

    Tsinghua Univ, Engn Lab, Next Generat Power & Energy Storage Batteries Gra, Shenzhen 518055, Peoples R China|Tsinghua Univ, Sch Mat Sci & Engn, Adv Mat Lab, Beijing 100084, Peoples R China;

    Tsinghua Univ, Engn Lab, Next Generat Power & Energy Storage Batteries Gra, Shenzhen 518055, Peoples R China;

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  • 正文语种 eng
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  • 关键词

    integrated all-solid-state batteries; Li metal anodes; LLZO microparticles; LLZO nanowires;

    机译：集成全固态电池;锂金属阳极;LLZO微粒;LLZO纳米线;

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