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首页> 外文期刊>Advanced Functional Materials >In Situ Defect-Free Vertically Aligned Layered Double Hydroxide Composite Membrane for High Areal Capacity and Long-Cycle Zinc-Based Flow Battery
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In Situ Defect-Free Vertically Aligned Layered Double Hydroxide Composite Membrane for High Areal Capacity and Long-Cycle Zinc-Based Flow Battery

机译：原位无缺陷垂直对准层状双氢氧化物复合膜，用于高面积能和长循环锌的流量电池

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摘要

Rechargeable aqueous zinc-based flow batteries (ZFBs) are promising candidates for large scale energy storage devices. However, the challenges from zinc dendrites and limited areal capacity considerably impede their wide application. Here, an in situ vertical growth of layered double hydroxide membrane (LDH-G) is constructed to enable long-life ZFBs. Owing to the high hydroxide ion conductivity and ion selectivity nature of LDH nanosheets, specifically, the precise control of directional ion transport in vertical arrangement LDHs, a superior battery performance can be realized. Moreover, the defect-free LDHs layer serves as a buffer layer to enable a uniform Zn deposition, which effectively enhances the areal capacity of the battery. As a result, the designed membrane endows an alkaline zinc-iron flow battery with excellent rate performance and cycling stability, maintaining an energy efficiency of 80% at 260 mA cm(-2) for 800 cycles, which is the highest performance ever reported. Most importantly, the LDHs layer enables the battery for 1200 h long-cycle stability with a uniform Zn deposition and high areal capacity of 240 mAh cm(-2). This work realizes an in situ growth of 3D LDHs arrays on the polymer substrate, which provides a strategy toward high areal capacity and dendrite-free Zn deposition for ZFBs.
机译：可充电的锌基流量电池（ZFBS）是大型储能设备的承诺候选人。然而，锌枝曲曲串和有限的面积容量的挑战大大阻碍了他们广泛的应用。这里，构建层状双氢氧化物膜（LDH-G）的原位垂直生长以使长寿ZFBs能够实现。由于LDH纳米液的高氢氧离子电导率和离子选择性性质，具体地，可以实现垂直布置LDH中的定向离子输送的精确控制，可以实现优异的电池性能。此外，无缺陷的LDHS层用作缓冲层，以使得能够均匀Zn沉积，这有效地增强了电池的面积容量。结果，设计的膜赋予碱性锌 - 铁流电池，具有优异的速率性能和循环稳定性，保持80％的能量效率为80％（-2），以保持800次循环，这是有史以来最高的性能。最重要的是，LDH层使电池能够具有1200小时的长循环稳定性，均匀Zn沉积和240mah cm（-2）的高面积容量。该工作实现了聚合物基板上的3D LDHS阵列的原位生长，这为ZFBS提供了朝向高面积能和无树枝状的Zn沉积的策略。

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  • 来源
    《Advanced Functional Materials》 |2021年第31期|2102167.1-2102167.9|共9页
  • 作者

    Hu Jing; Yuan Chenguang; Zhi Liping; Zhang Huamin; Yuan Zhizhang; Li Xianfeng;

  • 作者单位

    Chinese Acad Sci Div Energy Storage Dalian Natl Lab Clean Energy Dalian Inst Chem Phys 457 Zhongshan Rd Dalian 116023 Peoples R China|Univ Chinese Acad Sci Beijing 100049 Peoples R China;

    Chinese Acad Sci Div Energy Storage Dalian Natl Lab Clean Energy Dalian Inst Chem Phys 457 Zhongshan Rd Dalian 116023 Peoples R China;

    Chinese Acad Sci Div Energy Storage Dalian Natl Lab Clean Energy Dalian Inst Chem Phys 457 Zhongshan Rd Dalian 116023 Peoples R China|Univ Chinese Acad Sci Beijing 100049 Peoples R China;

    Chinese Acad Sci Div Energy Storage Dalian Natl Lab Clean Energy Dalian Inst Chem Phys 457 Zhongshan Rd Dalian 116023 Peoples R China;

    Chinese Acad Sci Div Energy Storage Dalian Natl Lab Clean Energy Dalian Inst Chem Phys 457 Zhongshan Rd Dalian 116023 Peoples R China;

    Chinese Acad Sci Div Energy Storage Dalian Natl Lab Clean Energy Dalian Inst Chem Phys 457 Zhongshan Rd Dalian 116023 Peoples R China;

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  • 正文语种 eng
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  • 关键词

    high areal capacity; in situ vertical growth; layered double hydroxide membranes; zinc dendrites; zinc#8208; based batteries;

    机译：高面积能力;原位垂直增长;层状双氢氧化物膜;锌枝晶;锌＆＃8208;基电池;

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