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Synthesis of nickel-copper layered double hydroxides for asymmetric supercapacitors by low-temperature chemical co-precipitation method

Journal of Materials Science: Materials in Electronics(2024)

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摘要
In this paper, a straightforward low-temperature chemical co-precipitation method for the preparation of nickel-copper layered double hydroxide (L-Ni4CuLDH) was reported. The doping of copper element makes the stacking morphology of the composite material change obviously, from large block stacking to small block stacking, which enables greater exposed surface area of the L-Ni4CuLDH, increases the material contacts of the redox reaction and promotes electrode reaction. At 1 A g−1, the specific capacity of L-Ni4CuLDH electrode is 1656.9 F g−1. After it is increased to 20 A g−1, the rate performance is 69.7
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