期刊
EPL
卷 113, 期 3, 页码 -出版社
EPL ASSOCIATION, EUROPEAN PHYSICAL SOCIETY
DOI: 10.1209/0295-5075/113/38005
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资金
- EPSRC
- Fulbright Scholarship
- European Research Council [637334]
- European Research Council (ERC) [637334] Funding Source: European Research Council (ERC)
- Engineering and Physical Sciences Research Council [1363228] Funding Source: researchfish
Nanopores made with low-dimensional semiconducting materials, such as carbon nanotubes and graphene slit pores, are used in supercapacitors. For modelling purposes, it is often assumed that such pores screen ion-ion interactions like metallic pores, i.e. that screening leads to an exponential decay of the interaction potential with ion separation. By introducing a quantum capacitance that accounts for the density of states in the material, we show that ion-ion interactions in carbon nanotubes and graphene slit pores actually decay algebraically with ion separation. This result suggests a new avenue of capacitance optimization based on tuning the electronic structure of a pore: a marked enhancement in capacitance might be achieved by developing nanopores made with metallic materials or bulk semimetallic materials. Copyright (C) EPLA, 2016
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