XPS study of lithium surface after contact with lithium-salt doped polymer electrolytes

Ismail, Iqbal M.I.; Noda, Akihiro; Nishimoto, Akio; Watanabe, Masayoshi

doi:10.1016/s0013-4686(00)00758-1

Cited by 176 publications

(165 citation statements)

References 11 publications

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“…At 3.5 V ethene became the most abundant gas and small amounts of ethane and CH 4 were observed. For control electrolyte at 3.5 V, in addition to the large formation of ethene from the reduction of EC, 37,45,46 small amounts of methyl formate, ethyl formate, 1-propene, ethanol and ethyl acetate from the reduction of EMC 44 as well as acetaldehyde and methoxymethane originating from either EC 54 and EMC 44 were found. For VC and PES alone, the amount of ethene decreased compared to control electrolyte due to their preferential reduction ( Figure 2a).…”

Section: Resultsmentioning

confidence: 97%

Understanding the Role of Prop-1-ene-1,3-Sultone and Vinylene Carbonate in LiNi_1/3Mn_1/3Co_1/3O₂/Graphite Pouch Cells: Electrochemical, GC-MS and XPS Analysis

Madec

Petibon

Xia

et al. 2015

J. Electrochem. Soc.

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The role of prop-1-ene-1,3-sultone (PES) used alone or in combination with vinylene carbonate (VC) in LiNi1/3Mn1/3Co1/3O2(NMC)/graphite pouch cells was studied by correlating data from differential capacity (dQ/dV) analysis, gas chromatography/mass spectroscopy (GC−MS), ultrahigh precision coulometry, storage experiments and X-ray photoelectron spectroscopy. VC formed more stable and protective SEI films at both graphite and NMC surfaces due to the formation of a polymer of VC. For PES-containing electrolytes, the preferential reaction of PES led to the formation of SEI films with higher oxygen content at both graphite and NMC surfaces due to the additional oxygen contribution of sulfite species and substantially less LiF compared to control and VC electrolytes. PES also led to thicker SEI films at the NMC surface. When VC was combined with PES, features of the SEI films from both VC and PES were observed. The SEI film features for VC and PES used alone or in combination can explain the improved electrochemical performance as well as the lower production of gas observed with these additives compared to control electrolyte.

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Section: Resultsmentioning

confidence: 97%

Understanding the Role of Prop-1-ene-1,3-Sultone and Vinylene Carbonate in LiNi_1/3Mn_1/3Co_1/3O₂/Graphite Pouch Cells: Electrochemical, GC-MS and XPS Analysis

Madec

Petibon

Xia

et al. 2015

J. Electrochem. Soc.

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“…47−49 For both control and VC electrolytes, two additional peaks are observed at 530.7 and 528.6 eV and attributed to the formation of lithium alkoxide (ROLi) and lithium oxide (Li 2 O), respectively. 50,51 For the lithium alkoxide peak, no correlation between the state of charge and/or electrolyte used was detected. Although the lithium oxide might arise from water according to H 2 O + 2Li + + 2e − → Li 2 O(s) + H 2 (g), in the present case, its formation from further reduction of carbonate degradation compounds is more likely.…”

Section: Xps Analysis For Vc As Additivementioning

confidence: 99%

Effect of Sulfate Electrolyte Additives on LiNi_1/3Mn_1/3Co_1/3O₂/Graphite Pouch Cell Lifetime: Correlation between XPS Surface Studies and Electrochemical Test Results

et al. 2014

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The role of two homologous cyclic sulfate electrolyte additives, trimethylene sulfate (or 1,3,2-dioxathiane-2,2-dioxide, TMS) and ethylene sulfate (or 1,3,2-dioxathiolane-2,2-dioxide, DTD), used either alone or in combination with vinylene carbonate (VC) on the lifetime of LiNi 1/3 Mn 1/3 Co 1/3 O 2 (NMC)/graphite pouch cells was studied by correlating data from gas chromatography/mass spectroscopy (GC−MS), dQ/dV analysis, ultrahigh precision coulometry, storage experiments, and X-ray photoelectron spectroscopy. For VC alone, more stable and protective SEI films were observed at the surface of both electrodes due to the formation of a polymer of VC, which results in higher capacity retention. For TMS, similar chemical SEI compositions were found compared to the TMS-free electrolytes. When VC was added to TMS, longer cell lifetime is attributed to VC. For DTD, a cell lifetime that competes with VC was explained by a preferential reduction potential and a much higher fraction of organic compounds in the SEI films. When VC was added to DTD, the contribution of both additives to the SEI films is consistent with the initial reactivity observed from dQ/dV and GC−MS analysis.

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“…The poor compatibility of polymer electrolytes containing fluorinated lithium salts with lithium metal anode may be attributed to the following reasons. As confirmed by XPS analysis the amount of the fluorine substances on the lithium surface increases according to the storage time [137,138]. An important reason for the increase in ''R i '' is supposed to be the formation of fluorine compound on lithium surface [135e138].…”

Section: Compatibilitymentioning

confidence: 99%

Review on composite polymer electrolytes for lithium batteries

Stephan

Nahm

2006

Polymer

850

246

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This paper reviews the state of the art of composite polymer electrolytes (CPE) in view of their electrochemical and physical properties for the applications in lithium batteries. This review mainly encompasses on composite polymer electrolyte hosts namely poly(ethylene oxide) (PEO), poly(acrylonitrile) (PAN), poly(methyl methacrylate) (PMMA) and poly(vinylidene fluoride) (PVdF) studied so far. Also the ionic conductivity, transference number, compatibility and the cycling behavior of poly(vinylidene fluoride-hexafluoro propylene) (PVdF-HFP)e [AlO(OH)] n eLiPF 6 /LiClO 4 composite electrolytes have been studied and the results are discussed.

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XPS study of lithium surface after contact with lithium-salt doped polymer electrolytes

Cited by 176 publications

References 11 publications

Understanding the Role of Prop-1-ene-1,3-Sultone and Vinylene Carbonate in LiNi_1/3Mn_1/3Co_1/3O₂/Graphite Pouch Cells: Electrochemical, GC-MS and XPS Analysis

Understanding the Role of Prop-1-ene-1,3-Sultone and Vinylene Carbonate in LiNi_1/3Mn_1/3Co_1/3O₂/Graphite Pouch Cells: Electrochemical, GC-MS and XPS Analysis

Effect of Sulfate Electrolyte Additives on LiNi_1/3Mn_1/3Co_1/3O₂/Graphite Pouch Cell Lifetime: Correlation between XPS Surface Studies and Electrochemical Test Results

Review on composite polymer electrolytes for lithium batteries

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XPS study of lithium surface after contact with lithium-salt doped polymer electrolytes

Cited by 176 publications

References 11 publications

Understanding the Role of Prop-1-ene-1,3-Sultone and Vinylene Carbonate in LiNi1/3Mn1/3Co1/3O2/Graphite Pouch Cells: Electrochemical, GC-MS and XPS Analysis

Understanding the Role of Prop-1-ene-1,3-Sultone and Vinylene Carbonate in LiNi1/3Mn1/3Co1/3O2/Graphite Pouch Cells: Electrochemical, GC-MS and XPS Analysis

Effect of Sulfate Electrolyte Additives on LiNi1/3Mn1/3Co1/3O2/Graphite Pouch Cell Lifetime: Correlation between XPS Surface Studies and Electrochemical Test Results

Review on composite polymer electrolytes for lithium batteries

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About

Understanding the Role of Prop-1-ene-1,3-Sultone and Vinylene Carbonate in LiNi_1/3Mn_1/3Co_1/3O₂/Graphite Pouch Cells: Electrochemical, GC-MS and XPS Analysis

Understanding the Role of Prop-1-ene-1,3-Sultone and Vinylene Carbonate in LiNi_1/3Mn_1/3Co_1/3O₂/Graphite Pouch Cells: Electrochemical, GC-MS and XPS Analysis

Effect of Sulfate Electrolyte Additives on LiNi_1/3Mn_1/3Co_1/3O₂/Graphite Pouch Cell Lifetime: Correlation between XPS Surface Studies and Electrochemical Test Results