Bamboo-derived hard carbon/carbon nanotube composites as anode material for long-life sodium-ion batteries with high charge/discharge capacities  

作　　者：Sukanya Pothaya Chatwarin Poochai Nantikan Tammanoon Yaowamarn Chuminjak Tanaporn Kongthong Tanom Lomas Chakrit Sriprachuabwong Adisorn Tuantranont 

机构地区：[1]Graphene and Printed Electronics for Dual-Use Applications Research Division(GPERD),National Security and Dual-Use Technology Center(NSD),National Science and Technology Development Agency(NSTDA),Tambon Klong Nueng,Amphoe Klong Luang,Pathum Thani 12120,Thailand

出　　处：《Rare Metals》2024年第1期124-137,共14页稀有金属（英文版）

基　　金：facilitated by Hideki Nakajima as the beamline manager of the Synchrotron Light Research Institute in Thailand;received partial funding support from the NSRF via the Program Management Unit for the Human Resources & Institutional Development, Research, and Innovation (PMU-B);in the Industrial Postdoctoral Research Fellowship Program to support Thailand Strategic Industry (No.B01F640054) that was carried out as a part of the requirement for the Postdoctoral Fellowship Program of Dr. Sukanya Pothaya in NSTDA, Thailand。

摘　　要：Hard carbon derived from bamboo for the anode material of sodium-ion batteries has a three-dimensional(3D) open framework structure and has naturally incorporated K-ions into its carbon structure,increasing the dinterlayer spacing of hard carbon materials for facilitating Na^(+) transport.In this work,bamboo-derived hard carbon was prepared via two carbonization temperatures at 700and 1000 ℃ for an hour and employed as an anode for sodium-ion batteries(SIB).X-ray diffraction(XRD) and Fourier transform(FT)-Raman spectroscopic results indicated the disordered structure with d-spacing(d_(002)) around0.36-0.37 nm,which is a benefit for sodium ion insertion/desertion.Herein,the composition between carbon-nanotube(CNT) and bamboo-derived hard carbon(BB) was synthesized by a ball mill with various contents of CNT(1 wt%,5 wt% and 10 wt%).At the optimal CNT content of 5 wt%,the sample exhibited excellent performance and outstanding stability.As the anode,the half-cell SIB using BB(700)w@5%CNT(with a carbonization temperature of700 ℃ and CNT loading of 5 wt%) delivered a high initial specific capacity of 268.9 mAh·g^(-1) at 0.1C and capacity retention of 78.6% after 500 cycles at 1.0C.The full cell SIB fabrication BB(700)w@5%CNT in combination with Na_(3)V_(2)(PO4)_(3) as the cathode demonstrated a high specific capacity of 127.6 mAh·g^(-1) at 0.2C with its capacitive retention remaining of 78% at 1.0C after 1000 cycles.The attained storage performance indicates that hard carbonCNT composite anode material enhanced the conductive path of electron transport and provided long-term cycling stability.The good electrochemical performance as well as the low cost and environment-friendliness of the bambooderived hard carbon proves its suitability for future sodium-ion batteries.

关 键 词：Hard carbon BAMBOO Sodium-ion battery(SIB) Full cell 

分 类 号：TB332[一般工业技术—材料科学与工程] TM912[电气工程—电力电子与电力传动]