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- W3174443851 abstract "• The NPC with tunable pore structure is designed by dealloying metallic glasses. • The corrosion potential of additional elements is found to dominate the pore size. • The 3D porous MnO 2 @NPC composite electrode is fabricated. • The interface interaction between NPC substrate and active MnO 2 is studied by DFT. It is a great challenge to explore a feasible inner factor that dominates the ligament/pore size of nanoporous metals (NPMs). Herein, the controllable nanoporous copper (NPC) ribbons synthesized by free-dealloying as-spun Cu 50-x Zr 50 M x (x = 0 and 2.5 at.%; M = Al, Nb, Ag) metallic glasses (MGs). From insightfully understanding the correlation of the ligament sizes of NPC, the surface diffusivity of Cu atoms as well as the corrosion potential of additional elements (Al, Nb, Ag), it is firstly unveiled that the corrosion potential of additional elements in the examined etching media could be an inner factor for influencing the pore/ligament size of NPMs. The new findings rooting in the inherent nature of additional elements makes the design of NPMs with useful pore size much more feasible than ever. For further application of NPC with tunable ligament size, the suitable pore structure of NPC is effective in improving the dispersion of MnO 2 nanoflakes or nanoflowers to form 3D porous MnO 2 @NPC composite electrodes. Density functional theory (DFT) further proves that the interaction of NPC and MnO 2 results in the modification of the electronic structure and subsequently the improvement of the electrochemical performance. The NPC-supported MnO 2 electrode presents much enhanced specific capacitance and cycling stability as compared to the MnO 2 nanoparticles. At last, three symmetric supercapacitor (SC) devices connected in series could power up a green LED bulb for more than 55 min." @default.
- W3174443851 created "2021-07-05" @default.
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- W3174443851 date "2022-01-01" @default.
- W3174443851 modified "2023-09-24" @default.
- W3174443851 title "Controllable nanoporous copper synthesized by dealloying metallic glasses: New insights into the tuning pore structure and applications" @default.
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- W3174443851 doi "https://doi.org/10.1016/j.cej.2021.130861" @default.
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