用于钠离子电池的甘勇淀粉衍生硬碳负极

Ganyong Starch Derived Hard Carbon Anodes for Sodium Ion Batteries.

作者信息

Arie Arenst Andreas, Hazel Kevin, Kristianto Hans, Muljana Henky, Stievano Lorenzo

机构信息

Department of Chemical Engineering, Faculty of Industrial Technology, Parahyangan Catholic University, Ciumbuleuit 94 Bandung 40141, Indonesia.

Institute Charles Gerhardt Montpellier, Universite' Montpellier, CNRS, 34090 Montpellier, France.

出版信息

J Nanosci Nanotechnol. 2021 Jul 1;21(7):4033-4036. doi: 10.1166/jnn.2021.19220.

DOI:10.1166/jnn.2021.19220

PMID:33715739

Abstract

Hard carbons are one of the most promising carbon anode materials for sodium ion batteries (SIBs) due to the high specific capacity and excellent cycle properties. Among the precursors used to synthesize hard carbon, natural starches are of great interest due to their unique morphologies. In this paper, ganyong starch based hard carbons (GSHC) were prepared by direct carbonization at various temperatures (700-1100) °C. The obtained hard carbons exhibit high reversible capacities of sodium-ion batteries of about 239 mAh g at current density of 0.1 C. after 100 cycles. The excellent cycle profiles are attributed to the unique morphology and defect carbon structures.

摘要

硬碳由于具有高比容量和优异的循环性能，是钠离子电池（SIBs）最有前途的碳负极材料之一。在用于合成硬碳的前驱体中，天然淀粉因其独特的形态而备受关注。本文通过在不同温度（700 - 1100）°C下直接碳化制备了基于甘勇淀粉的硬碳（GSHC）。所制备的硬碳在0.1 C的电流密度下，经过100次循环后，钠离子电池表现出约239 mAh g的高可逆容量。优异的循环性能归因于其独特的形态和缺陷碳结构。