RT info:eu-repo/semantics/article
T1 Influence of surface functional groups on lithium ion intercalation of carbon cloth
A1 Ventosa Arbaizar, Edgar
A1 Xia, Wei
A1 Klink, Stefan
A1 La Mantia, Fabio
A1 Muhler, Martin
A1 Schuhmann, Wolfgang
K1 Carbon cloth
K1 Surface electrochemistry
K1 Lithium batteries
K1 Exfoliation
K1 SEI formation
K1 Química analítica
K1 Chemistry, Analytic
K1 Química
K1 Chemistry
AB Commercial carbon cloth made of PAN-based carbon fibres was used as free-standing anode for lithium intercalation. The role of surface functional groups on the specific irreversible charge loss and reversible charge during the intercalation and de-intercalation of lithium ions into carbon cloth has been investigated. Oxygen groups have been introduced by nitric acid vapour treatment and subsequently gradually removed by thermal treatment at different temperatures in He or H2 atmosphere as confirmed by X-ray photoelectron spectroscopy. A clear correlation between the amount of surface-bound oxygen groups and the irreversible specific charge was observed. Three irreversible processes were distinguished during the first cathodic scan: (i) reduction of oxygen groups, (ii) formation of the solid electrolyte interphase (SEI) and (iii) presumably exfoliation. The latter one was only observed for samples with low surface oxygen concentration, and its contribution to the irreversible capacity was small due to the low graphitization degree of the samples. An increased specific reversible charge upon increasing the amount of oxygen-containing groups was observed with the main improvement above 1.5 V.
PB Elsevier
SN 0013-4686
YR 2012
FD 2012-01
LK https://hdl.handle.net/10259/11366
UL https://hdl.handle.net/10259/11366
LA eng
NO Financial support by the BMBF in the framework of the project “Elektrochemie und Mobilität–Kompetenzverbund Nord (KVN; FKZ: 13N9973) and by the EU and the state NRW in the framework of the HighTech. NRW program for funding of the Center of Electrochemical Sciences–CES is gratefully acknowledged.
DS Repositorio Institucional de la Universidad de Burgos
RD 21-may-2026