Affiliation:
1. School of Science and Technology, Chemistry Division University of Camerino Via Madonna delle Carceri-ChIP Camerino MC 62032 Italy
2. GISEL – Centro di Riferimento Nazionale per i Sistemi di Accumulo Elettrochimico di Energia INSTM Via Giuseppe Giusti 9 Firenze FI 50121 Italy
Abstract
AbstractSodium‐ion batteries (SIBs) represent a potential alternative to lithium‐ion batteries in large‐scale energy storage applications. To improve the sustainability of SIBs, the utilization of anode carbonaceous materials produced from biomass and the selection of a bio‐based binder allowing an aqueous electrode processing are fundamental. Herein, corncobs are used as raw material for the preparation of hard carbon and it is also used as cellulose sources for the synthesis of carboxymethyl cellulose (CMC) binder. The corncob‐derived electrodes deliver a high discharge capacity of around 264 mAhg−1 at 1 C (300 mAg−1), with promising capacity retention (84 % after 100 cycles) and good rate capability. Additionally, this work expands the fundamental insight of the sodium storage behavior of Hard Carbons through an electrochemical approach, suggesting that the reaction mechanism is controlled by capacitive process in the sloping voltage region, while the diffusion‐controlled intercalation is the predominant process in the low‐voltage plateau.
Funder
Università degli Studi di Camerino
Subject
Electrochemistry,Catalysis
Cited by
6 articles.
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