TY - JOUR
T1 - A free standing Ru-TiC nanowire array/carbon textile cathode with enhanced stability for Li-O2 batteries
AU - Liu, Chenjuan
AU - Qiu, Zhen
AU - Brant, Willian R.
AU - Younesi, Reza
AU - Ma, Yue
AU - Edström, Kristina
AU - Gustafsson, Torbjörn
AU - Zhu, Jiefang
N1 - Publisher Copyright:
© The Royal Society of Chemistry.
PY - 2018
Y1 - 2018
N2 - The instability of carbon cathode materials is one of the key problems that hinder the development of lithium-air/lithium-oxygen (Li-O2) batteries. In this contribution, a type of TiC-based cathode is developed as a suitable alternative to carbon based cathodes, and its stability with respect to its surface properties is investigated. Here, a free-standing TiC nanowire array cathode was in situ grown on a carbon textile, covering its exposed surface. The TiC nanowire array, via deposition with Ru nanoparticles, showed enhanced oxygen reduction/evolution activity and cyclability, compared to the one without Ru modification. The battery performance of the Li-O2 cells with Ru-TiC was investigated by using in operando synchrotron radiation powder X-ray diffraction (SR-PXD) during a full cycle. With the aid of surface analysis, the role of the cathode substrate and surface modification is demonstrated. The presented results are a further step toward a wise design of stable cathodes for Li-O2 batteries.
AB - The instability of carbon cathode materials is one of the key problems that hinder the development of lithium-air/lithium-oxygen (Li-O2) batteries. In this contribution, a type of TiC-based cathode is developed as a suitable alternative to carbon based cathodes, and its stability with respect to its surface properties is investigated. Here, a free-standing TiC nanowire array cathode was in situ grown on a carbon textile, covering its exposed surface. The TiC nanowire array, via deposition with Ru nanoparticles, showed enhanced oxygen reduction/evolution activity and cyclability, compared to the one without Ru modification. The battery performance of the Li-O2 cells with Ru-TiC was investigated by using in operando synchrotron radiation powder X-ray diffraction (SR-PXD) during a full cycle. With the aid of surface analysis, the role of the cathode substrate and surface modification is demonstrated. The presented results are a further step toward a wise design of stable cathodes for Li-O2 batteries.
UR - http://www.scopus.com/inward/record.url?scp=85057474292&partnerID=8YFLogxK
U2 - 10.1039/c7ta10930j
DO - 10.1039/c7ta10930j
M3 - 文章
AN - SCOPUS:85057474292
SN - 2050-7488
VL - 6
SP - 23659
EP - 23668
JO - Journal of Materials Chemistry A
JF - Journal of Materials Chemistry A
IS - 46
ER -
