Li-ion vs. Na-ion capacitors: A performance evaluation with coconut shell derived mesoporous carbon and natural plant based hard carbon

被引：111

作者：

Jayaraman, Sundaramurthy ^{[1
]}

Jain, Akshay ^{[1
,2
]}

Ulaganathan, Mani ^{[3
]}

Edison, Eldho ^{[4
]}

Srinivasan, M. P. ^{[5
]}

Balasubramanian, Rajasekhar ^{[2
]}

Aravindan, Vanchiappan ^{[3
]}

Madhavi, Srinivasan ^{[3
,4
]}

机构：

[1] Ngee Ann Polytech, Environm & Water Technol Ctr Innovat, Singapore 599489, Singapore

[2] Natl Univ Singapore, Dept Chem & Biomol Engn, Singapore 117585, Singapore

[3] Nanyang Technol Univ, Energy Res Inst NTU ERI N, Res Techno Plaza,50 Nanyang Dr, Singapore 637553, Singapore

[4] Nanyang Technol Univ, Sch Mat Sci & Engn, Singapore 639798, Singapore

[5] RMIT Univ, Sch Civil Environm & Chem Engn, GPO Box 2476, Melbourne, Vic 3001, Australia

来源：

CHEMICAL ENGINEERING JOURNAL | 2017年 / 316卷

基金：

新加坡国家研究基金会;

关键词：

Li-ion capacitor; Na-ion capacitor; Coconut shell; Hard carbon; Energy density; HYBRID ELECTROCHEMICAL CAPACITORS; NEGATIVE ELECTRODE MATERIALS; ENERGY-STORAGE; ACTIVATED CARBONS; HYDROTHERMAL PRETREATMENT; SUPERCAPACITOR; BIOMASS; NANOFIBERS; BATTERIES; GRAPHENE;

D O I：

10.1016/j.cej.2017.01.108

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Coconut shell derived mesoporous carbon (CS-AC) is explored as prospective supercapacitor component in Li-ion and Na-ion capacitors (LIC and NIC) along with pre-lithiated/sodiated natural plant derived hard carbon (HC) as battery element. Though, there is no obvious variation from the capacitive properties of CS-AC, but an obvious difference is evident for battery component in single electrode configuration. Based on such performance, the mass loading has been adjusted during the fabrication of LIC and NIC. Prior to this, HC is pre-lithiated/sodiated for LIC/NIC assembly. The CS-AC and pre-treated HC based materials registered the maximum energy density of similar to 121 and similar to 82 Wh kg(-1) for LIC and NIC assemblies, respectively. An excellent long-term cycleability of similar to 83% retention is noted for LIC after 8000 cycles, whereas NIC showed inferior performance (similar to 60%) under similar testing conditions. Multilayer surface film is the main reason for such performance which has been clearly revealed from the impedance measurements. First, the CS-AC is prepared by hydrothermal carbonization and subsequent chemical activation with ZnCl2 to yield high specific surface area and pore volume of 1795 m(2) g(-1) and 2.2 cm(3) g(-1), respectively, in which 71% originated from mesoporous region. (C) 2017 Elsevier B.V. All rights reserved.

引用

页码：506 / 513

页数：8