TY - JOUR
T1 - Operando monitoring the lithium spatial distribution of lithium metal anodes
AU - Lv, Shasha
AU - Verhallen, Tomas
AU - Vasileiadis, Alexandros
AU - Ooms, Frans
AU - Xu, Yaolin
AU - Li, Zhaolong
AU - Li, Zhengcao
AU - Wagemaker, Marnix
N1 -
doi erratum 10.1038/s41467-018-95212-6, Scopus http://www.scopus.com/inward/record.url?scp=85050552108&partnerID=8YFLogxK
PY - 2018
Y1 - 2018
N2 - Electrical mobility demands an increase of battery energy density beyond current lithium-ion technology. A crucial bottleneck is the development of safe and reversible lithium-metal anodes, which is challenged by short circuits caused by lithium-metal dendrites and a short cycle life owing to the reactivity with electrolytes. The evolution of the lithium-metal-film morphology is relatively poorly understood because it is difficult to monitor lithium, in particular during battery operation. Here we employ operando neutron depth profiling as a noninvasive and versatile technique, complementary to microscopic techniques, providing the spatial distribution/density of lithium during plating and stripping. The evolution of the lithium-metal-density-profile is shown to depend on the current density, electrolyte composition and cycling history, and allows monitoring the amount and distribution of inactive lithium over cycling. A small amount of reversible lithium uptake in the copper current collector during plating and stripping is revealed, providing insights towards improved lithium-metal anodes.
AB - Electrical mobility demands an increase of battery energy density beyond current lithium-ion technology. A crucial bottleneck is the development of safe and reversible lithium-metal anodes, which is challenged by short circuits caused by lithium-metal dendrites and a short cycle life owing to the reactivity with electrolytes. The evolution of the lithium-metal-film morphology is relatively poorly understood because it is difficult to monitor lithium, in particular during battery operation. Here we employ operando neutron depth profiling as a noninvasive and versatile technique, complementary to microscopic techniques, providing the spatial distribution/density of lithium during plating and stripping. The evolution of the lithium-metal-density-profile is shown to depend on the current density, electrolyte composition and cycling history, and allows monitoring the amount and distribution of inactive lithium over cycling. A small amount of reversible lithium uptake in the copper current collector during plating and stripping is revealed, providing insights towards improved lithium-metal anodes.
UR - http://resolver.tudelft.nl/uuid:b445a0eb-9076-4f74-a733-5b21cda4c684
UR - http://www.scopus.com/inward/record.url?scp=85047982313&partnerID=8YFLogxK
U2 - 10.1038/s41467-018-04394-3
DO - 10.1038/s41467-018-04394-3
M3 - Article
AN - SCOPUS:85047982313
SN - 2041-1723
VL - 9
JO - Nature Communications
JF - Nature Communications
IS - 1
M1 - 2152
ER -