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Increase in Capacitance by Subnanometer Pores in Carbon

Abstract : This Viewpoint clarifies the correlation between capacitance and pore size in electrical double-layer capacitors (EDLCs, also known as supercapacitors or ultracapacitors), which is of high practical importance for the design of advanced carbon electrode materials. Two extreme cases are obvious: excessively large pores, accompanied by large pore volumes and limited specific surface area, will lead to a low energy storage capacity, whereas very small pores will limit the ion access due to steric effects, in addition to imposing obstacles to ion transport
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Nicolas Jäckel, Patrice Simon, Yury Gogotsi, Volker Presser. Increase in Capacitance by Subnanometer Pores in Carbon. ACS Energy Letters, American Chemical Society 2016, 1 (6), pp.1262-1265. ⟨10.1021/acsenergylett.6b00516⟩. ⟨hal-01528359⟩



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