Gas sorption porosimetry for the evaluation of hard carbons as anodes for Li- and Na-ion batteries

• Yuko Matsukawa,
• Fabian Linsenmann,
• Maximilian A. Plass,
• George Hasegawa,
• Katsuro Hayashi and
• Tim-Patrick Fellinger

Beilstein J. Nanotechnol. 2020, 11, 1217–1229, doi:10.3762/bjnano.11.106

• pores is nontrivial, we herein employ Kr, N2 and CO2 gas sorption porosimetry, as well as H2O vapor sorption porosimetry, to investigate eight hard carbons. Electrochemical lithium as well as sodium storage tests are compared to the obtained apparent surface areas and pore volumes. H2O, and more

• descriptors to the obtained capacities remains a scientific challenge. Keywords: alkaline-ion secondary battery; gas sorption porosimetry; hard carbon; irreversible capacity; ultramicroporosity; Introduction Lithium-ion battery (LIB)-based energy storage devices have been gaining high interest in the recent

• ]. These unwanted side reactions are expected to reduce the reversible capacity that can be obtained by adsorption within the pore system. In this work, we use different gas sorption porosimetry (GSP) techniques to investigate surface areas and porosities, contributed by pores of different size, of