17 0

High performance potassium-sulfur batteries based on a sulfurized polyacrylonitrile cathode and polyacrylic acid binder

Title
High performance potassium-sulfur batteries based on a sulfurized polyacrylonitrile cathode and polyacrylic acid binder
Author
황장연
Keywords
POROUS CARBON NANOSHEETS; ELECTRODE MATERIAL; RATE CAPABILITY; ION BATTERIES; COMPOSITE; STORAGE; CHALLENGES; ELECTROCHEMISTRY; SYSTEM
Issue Date
2018-07
Publisher
ROYAL SOC CHEMISTRY
Citation
JOURNAL OF MATERIALS CHEMISTRY A, v. 6, no. 30, page. 14587-14593
Abstract
Room-temperature metal-sulfur batteries have attracted extensive interest because of their advantages of high theoretical capacity, high elemental abundance, and low cost. Towards improving the electro-chemical performances of the sulfurized polyacrylonitrile (SPAN) composite cathode in potassium-sulfur batteries (KSBs), an advanced electrode design has been developed by applying a polyacrylic acid binder to the SPAN electrode. By integrating the merit of the SPAN composite cathode and PAA binder, the proposed SPAN cell generates a high reversible capacity of 1050 mA h g(-1) and has excellent cycling stability after 100 cycles (95% retention of the initial cycle) at a high current density of 837.5 mA g(-1). Ex situ Raman spectra show that the PAA binder is evidently more effective at improving the structural stability of the SPAN electrode than the PVdF binder during cycling. To better understand the electrochemical reaction mechanism of SPAN in KSBs, XPS analysis was further performed in a wide discharge cut-off voltage range.
URI
https://pubs.rsc.org/en/content/articlelanding/2018/TA/C8TA03135E#!divAbstracthttp://repository.hanyang.ac.kr/handle/20.500.11754/119397
ISSN
2050-7488; 2050-7496
DOI
10.1039/c8ta03135e
Appears in Collections:
CENTER FOR CREATIVE CONVERGENCE EDUCATION[S](창의융합교육원) > ETC
Files in This Item:
There are no files associated with this item.
Export
RIS (EndNote)
XLS (Excel)
XML


qrcode

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

BROWSE