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Investigating Surfa...
Investigating Surface Reactivity of a Ni-Rich Cathode Material toward CO2, H2O, and O2 Using Ambient Pressure X-ray Photoelectron Spectroscopy
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- Chen, Heyin (författare)
- Uppsala University,Uppsala universitet,Strukturkemi
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- Ericson, Tove, 1983- (författare)
- Uppsala University,Uppsala universitet,Strukturkemi
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- Temperton, Robert H. (författare)
- Lund University,Lunds universitet,MAX IV-laboratoriet,MAX IV Laboratory
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- Källquist, Ida (författare)
- Uppsala University,Uppsala universitet,Energimaterialens fysik
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- Liu, Haidong, Dr. (författare)
- Uppsala University,Uppsala universitet,Strukturkemi
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- Eads, Calley N. (författare)
- Lund University,Lunds universitet,MAX IV-laboratoriet,MAX IV Laboratory
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- Mikheenkova, Anastasiia (författare)
- Uppsala University,Uppsala universitet,Strukturkemi
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- Andersson, Margit (författare)
- Lund University,Lunds universitet,MAX IV-laboratoriet,MAX IV Laboratory
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- Kokkonen, Esko (författare)
- Lund University,Lunds universitet,MAX IV-laboratoriet,MAX IV Laboratory
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- Brant, William R. (författare)
- Uppsala University,Uppsala universitet,Strukturkemi
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- Hahlin, Maria (författare)
- Uppsala University,Uppsala universitet,Strukturkemi,Energimaterialens fysik
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(creator_code:org_t)
- American Chemical Society (ACS), 2023
- 2023
- Engelska.
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Ingår i: ACS Applied Energy Materials. - : American Chemical Society (ACS). - 2574-0962. ; 6:22, s. 11458-11467
- Relaterad länk:
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https://doi.org/10.1...
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https://uu.diva-port... (primary) (Raw object)
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http://dx.doi.org/10... (free)
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https://urn.kb.se/re...
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https://doi.org/10.1...
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https://lup.lub.lu.s...
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Abstract
Ämnesord
Stäng
- Layered Ni-rich transition metal oxide materials are considered the most promising cathodes for use in commercial Li-ion batteries. Due to their instability in air, an impurity layer forms during storage under ambient conditions, and this layer increases electrochemical polarization during charging and discharging, which ultimately leads to a lower cycling capacity. In this work, we found that storage of the LiNi0.8Mn0.1Co0.1O2 (NMC 811) material in ultrahigh vacuum (UHV) can restore the surface by reducing the amount of native carbonate species in the impurity layer. In this work, in situ soft X-ray ambient pressure photoelectron spectroscopy is used to directly follow the interaction between common gases found in air and the NMC 811 surface. During gas exposure of the NMC 811 surface to pure CO2, O2, and a mixture of both pure gases, surface-adsorbed CO2 or/and O2 were detected; however, permanent changes could not be identified under UHV after the gas exposure. In contrast, a permanent increase in metal hydroxide species was observed on the sample surface following H2O vapor exposure, and an increased intensity in the carboxylate peak was observed after exposure to a mixture of CO2/O2/H2O. Thus, the irreversible degradation reaction with CO2 is triggered in the presence of H2O (on relevant time scales defined by the experiment). Additional measurements revealed that X-ray irradiation induces the formation of metal carbonate species on the NMC 811 surface under CO2 and H2O vapor pressure.
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Elektroteknik och elektronik -- Annan elektroteknik och elektronik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Electrical Engineering, Electronic Engineering, Information Engineering -- Other Electrical Engineering, Electronic Engineering, Information Engineering (hsv//eng)
- NATURVETENSKAP -- Kemi -- Materialkemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Materials Chemistry (hsv//eng)
- TEKNIK OCH TEKNOLOGIER -- Materialteknik -- Annan materialteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Materials Engineering -- Other Materials Engineering (hsv//eng)
Nyckelord
- Ni-rich NMC materials
- Li-ion batteries
- gas exposure
- ambient pressure PES
- beam effect
- surface degradation
- Chemistry with specialization in Inorganic Chemistry
- Kemi med inriktning mot oorganisk kemi
- Kemi
- Chemistry
- Materialvetenskap
- Materials Science
- ambient pressure PES
- beam effect
- gas exposure
- Li-ion batteries
- Ni-rich NMC materials
- surface degradation
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
Hitta via bibliotek
Till lärosätets databas
- Av författaren/redakt...
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Chen, Heyin
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Ericson, Tove, 1 ...
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Temperton, Rober ...
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Källquist, Ida
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Liu, Haidong, Dr ...
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Eads, Calley N.
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visa fler...
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Mikheenkova, Ana ...
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Andersson, Margi ...
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Kokkonen, Esko
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Brant, William R ...
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Hahlin, Maria
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- Om ämnet
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- TEKNIK OCH TEKNOLOGIER
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TEKNIK OCH TEKNO ...
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och Elektroteknik oc ...
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och Annan elektrotek ...
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- NATURVETENSKAP
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NATURVETENSKAP
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och Kemi
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och Materialkemi
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- TEKNIK OCH TEKNOLOGIER
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TEKNIK OCH TEKNO ...
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och Materialteknik
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och Annan materialte ...
- Artiklar i publikationen
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ACS Applied Ener ...
- Av lärosätet
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Uppsala universitet
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Lunds universitet