Abstract Porous nanoarray architectures of electrode materials with rapid electron/ions migrations and highly accessible surface areas are eagerly desired for battery typed charge storage in various energy devices. Herein, NiAl layered double hydroxide-reduced graphene oxide composite (NA LDH-rGO) with ultrathin nanosheets array architecture onto Ni foam substrate was designed as battery electrode. The porous channels and interconnected walls with homogeneous embedding of reduced graphene oxide (rGO) enable the rapid and sufficient redox reaction of battery active NiAl layered double hydroxide (NA LDH) component, therefore, high areal capacity of 1.42 C cm−2 was yielded at 1 mA cm−2, and 0.88 C cm−2 was retained upon 20 folds increased current density by the representative NA LDH-rGO electrode. When used as battery electrode of hybrid supercapacitor (HSC), high energy density (Ecell, 0.22 mWh cm−2 at power density (Pcell) of 4.5 mW cm−2) and good cycling stability could be furnished simultaneously. In addition, the NA LDH-rGO electrode based Zn ions hybrid battery (HB) also offered high Ecell (0.48 mWh cm−2 at 1.9 mW cm−2), export voltage platform (over 1.7 V) and slow self-discharge rate, manifesting the feasibility of the NA LDH-rGO nanosheets array electrode for battery typed charge storage.

中文翻译：

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具有高电池性能的超薄NiAl层状双氢氧化物还原氧化石墨烯复合纳米片阵列，用于混合超级电容器和混合电池

摘要 电极材料的多孔纳米阵列结构具有快速的电子/离子迁移和高度可及的表面积，是各种能源设备中电池类型电荷存储的迫切需要。在此，NiAl 层状双氢氧化物还原氧化石墨烯复合材料（NA LDH-rGO）在泡沫镍基板上具有超薄纳米片阵列结构，被设计为电池电极。具有均匀嵌入还原氧化石墨烯 (rGO) 的多孔通道和互连壁使电池活性 NiAl 层状双氢氧化物 (NA LDH) 组分能够进行快速和充分的氧化还原反应，因此，1.42 C cm-2 的高面积容量在1 mA cm-2 和 0.88 C cm-2 在电流密度增加 20 倍时被代表性 NA LDH-rGO 电极保留。当用作混合超级电容器（HSC）的电池电极时，可以同时提供高能量密度（Ecell，0.22 mWh cm-2，功率密度（Pcell）为 4.5 mW cm-2）和良好的循环稳定性。此外，基于NA LDH-rGO电极的锌离子混合电池（HB）还提供高Ecell（0.48 mWh cm-2 at 1.9 mW cm-2）、输出电压平台（超过1.7 V）和缓慢的自放电率，证明了 NA LDH-rGO 纳米片阵列电极用于电池类型电荷存储的可行性。