Layered double hydroxide membrane with high hydroxide conductivity and ion selectivity for energy storage device.
Layered double hydroxide membrane with high hydroxide conductivity and ion selectivity for energy storage device.
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用于储能装置的具有高氢氧化物电导率和离子选择性的层状双氢氧化物膜
DOI：
10.1038/s41467-021-23721-9
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发表时间：
2021-06-07
影响因子：
16.6
通讯作者：
Li X
中科院分区：
文献类型：
--
作者：
Hu J;Tang X;Dai Q;Liu Z;Zhang H;Zheng A;Yuan Z;Li X
储能设备对离子传输速度快、选择性强的膜提出了很高的要求。层状双氢氧化物(LDH)具有均匀的层间走廊和丰富的羟基共价键合在二维(2D)主体层内，使其成为高性能膜的极佳候选者。然而，将LDHs用于离子分离的相关研究还很少，尤其是对LDHs中离子输运行为的深入研究。在这里，我们报道了一种用于液流电池的具有快速和选择性离子传输的LDHs基复合膜。氢氧离子在LDHs中的传输是通过车辆(标准扩散)和格洛特劳斯(质子跳跃)机制进行的。基于LDHs的薄膜使碱性锌基液流电池能够在200mA cm−2下运行，400次循环的能效为82.36%。这项研究对离子在LDH中的输运有了深入的了解，并进一步启发了它们在其他能源相关设备中的应用。
Membranes with fast and selective ions transport are highly demanded for energy storage devices. Layered double hydroxides (LDHs), bearing uniform interlayer galleries and abundant hydroxyl groups covalently bonded within two-dimensional (2D) host layers, make them superb candidates for high-performance membranes. However, related research on LDHs for ions separation is quite rare, especially the deep-going study on ions transport behavior in LDHs. Here, we report a LDHs-based composite membrane with fast and selective ions transport for flow battery application. The hydroxide ions transport through LDHs via vehicular (standard diffusion) & Grotthuss (proton hopping) mechanisms is uncovered. The LDHs-based membrane enables an alkaline zinc-based flow battery to operate at 200 mA cm−2, along with an energy efficiency of 82.36% for 400 cycles. This study offers an in-depth understanding of ions transport in LDHs and further inspires their applications in other energy-related devices.
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影响因子：
15
作者：
Chen, Chen;Tse, Ying-Lung Steve;Voth, Gregory A.
通讯作者：
Voth, Gregory A.
薄膜复合膜打破了液流电池电导率和选择性之间的权衡
影响因子：
16.6
作者：
Dai, Qing;Liu, Zhiqiang;Li, Xianfeng
通讯作者：
Li, Xianfeng
用于锌/镍二次电池电化学储能的剥离层状双氢氧化物和石墨烯纳米片的自组装
影响因子：
9.2
作者：
Long, Jun;Yang, Zhanhong;Zeng, Xiao
通讯作者：
Zeng, Xiao
影响因子：
16.6
作者：
Hatakeyama, Kazuto;Karim, Mohammad Razaul;Matsumoto, Yasumichi
通讯作者：
Matsumoto, Yasumichi
影响因子：
39.8
作者：
Baran, Miranda J.;Braten, Miles N.;Helms, Brett A.
通讯作者：
Helms, Brett A.