Surface Redox-Active Organosulfur-Tethered Carbon Nanotubes for High Power and Long Cyclability of Na-Organosulfur Hybrid Energy Storage

被引：23

作者：

Jana, Milan ^{[1
]}

Park, Jae Min ^{[1
]}

Kota, Manikantan ^{[1
]}

Shin, Kang Ho ^{[1
]}

Rana, Harpalsinh H. ^{[1
]}

Nakhanivej, Puritut ^{[1
]}

Huang, Jia-Qi ^{[2
]}

Park, Ho Seok ^{[1
,3
,4
]}

机构：

[1] Sungkyunkwan Univ, Sch Chem Engn, Suwon 16419, South Korea

[2] Beijing Inst Technol, Adv Res Inst Multidisciplinary Sci, Beijing 100081, Peoples R China

[3] Sungkyunkwan Univ, Dept Hlth Sci & Technol, Samsung Adv Inst Hlth Sci & Technol SAIHST, Suwon 16419, South Korea

[4] Sungkyunkwan Univ, SKKU Adv Inst Nano Technol SAINT, Suwon 16419, South Korea

来源：

ACS ENERGY LETTERS | 2021年 / 6卷 / 01期

基金：

新加坡国家研究基金会;

关键词：

ELECTROCHEMICAL-PERFORMANCE; ELEMENTAL SULFUR; LITHIUM-SULFUR; SODIUM; CAPACITORS; GRAPHENE; BATTERIES; DESIGN; ANODE; OXIDE;

D O I：

10.1021/acsenergylett.0c02188

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Despite the clear benefits of Na and S active materials, Na-S hybrid energy storage devices have yet to be exploited, and existing Na-S batteries cannot provide fast kinetics and long-term stability. Herein, we describe chemical and electronic coupling of the redox-active organosulfur moiety (-S-S-S-) with carbon nanotube (CNT) networks for high power and long cyclability of Na-organosulfur hybrid energy storage devices. The facile and reversible surface redox kinetics of organosulfur-tethered CNT is associated with a two-electron transfer toward the formation of low-order polysulfide, as confirmed by in situ and ex situ analyses. The specific capacitance of SOS-OCNT is 377 F g(-1) (94% of theoretical capacitance) and 61.3% of capacitance is retained at 10 A g(-1). The Na-organosulfur hybrid full cells deliver an ultrahigh power density of 13.4 kW kg(-1) and high energy density of 27 Wh kg(-1) over 50000 cycles.

引用

页码：280 / 289

页数：10

共 51 条

[1] High Power Sodium-Ion Batteries and Hybrid Electrochemical Capacitors Using Mo or Nb-Doped Nano-Titania Anodes [J].