Gas Evolution in All-Solid-State Battery Cells

Bartsch, Timo; Strauss, Florian; Hatsukade, Toru; Schiele, Alexander; Kim, A‐Young; Hartmann, Pascal; Janek, Jürgen; Brezesinski, Torsten

doi:10.1021/acsenergylett.8b01457

Cited by 120 publications

(145 citation statements)

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“…Resultsf rom DEMS conducted on aL i/LNO cell are depicted in Figure 5a-c and Figure S2, showingt he gas evolution over three cycles as af unctiono fx(Li)a nd time, respectively.F igure 5c is am agnified view of the 3rd charge/ discharge cycle. [37] No furtherO 2 evolution is detected during formation of the monoclinic phase, thus suggesting as table lattice structure. For NCM CAMs, it has been reported that CO 2 evolution is ar esult of electrolyte oxidation duet oo xygen release from the lattice,a mong others.…”

Section: Differential Electrochemical Mass Spectrometrymentioning

confidence: 94%

Phase Transformation Behavior and Stability of LiNiO₂ Cathode Material for Li‐Ion Batteries Obtained from In Situ Gas Analysis and Operando X‐Ray Diffraction

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Section: Differential Electrochemical Mass Spectrometrymentioning

confidence: 94%

Phase Transformation Behavior and Stability of LiNiO₂ Cathode Material for Li‐Ion Batteries Obtained from In Situ Gas Analysis and Operando X‐Ray Diffraction

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“…The oxygen release from various NCMs was further studied by Jung et al, [91,219,220] clearly showing enhanced O 2 evolution with increasing Ni content. [227] For Li-rich layered oxides, the O 2 evolution usually occurs at high potentials. [213] We also note that O 2 evolution during both charging and discharging has been confirmed recently by DEMS measurements conducted on all-solid-state battery cells.…”

Section: In Situ Gas Analyticsmentioning

confidence: 99%

“…[213] We also note that O 2 evolution during both charging and discharging has been confirmed recently by DEMS measurements conducted on all-solid-state battery cells. [227] For Li-rich layered oxides, the O 2 evolution usually occurs at high potentials. [101,219,220] During initial high-voltage charging up to 4.5-4.6 V vs Li + /Li of HE-NCM CAMs, Li 2 MnO 3 -like domains are supposed to be activated by extraction of Li and O atoms from the lattice.…”

Section: In Situ Gas Analyticsmentioning

confidence: 99%

Chemical, Structural, and Electronic Aspects of Formation and Degradation Behavior on Different Length Scales of Ni‐Rich NCM and Li‐Rich HE‐NCM Cathode Materials in Li‐Ion Batteries

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costs are required. Current state-of-theart LIBs using, e.g., well-established LiNi 1/3 Co 1/3 Mn 1/3 O 2 (NCM111) cathode material are yet not able to fulfill all these demands. In order to increase the energy density of LIBs, battery produ cers and researchers pursue various strategies. Substitution of expensive Co by Ni to achieve LiNi 1−x−y Co x Mn y O 2 compounds with x < 0.3 in order to increase the structural stability at high state-of-charge (SOC) is one possible approach. Another promising material class is represented by Li-rich high-energy NCM (HE-NCM) materials (cLi 2 MnO 3 ⋅[1 − c]LiTMO 2 [TM = Ni, Co, Mn, etc.]). All of these subgroups of layered oxides have in common a crystal structure that is prone to irreversible changes and fatigue during continuous Li (de-)intercalation. The relevant changes in electronic and crystal structure strongly depend on the particular cathode composition and micro/nanostructure. The development of a target-oriented roadmap to improved LIBs that meet the above requirements must address the underlying mechanisms on different cell levels, i.e., from the atomic level to the electrode level. A comprehensive summary of the properties and developments in the field of Ni-rich NCM [1][2][3][4][5][6][7][8][9] and Li-rich HE-NCM [10][11][12][13][14][15][16] has been presented recently In order to satisfy the energy demands of the electromobility market, both Ni-rich and Li-rich layered oxides of NCM type are receiving much attention as high-energy-density cathode materials for application in Li-ion batteries. However, due to different stability issues, their longevity is limited. During formation and continuous cycling, especially the electronic and crystal structure suffers from various changes, eventually leading to fatigue and mechanical degradation. In recent years, comprehensive battery research has been conducted at Karlsruhe Institute of Technology, mainly aiming at better understanding the primary degradation processes occurring in these layered transition metal oxides. The characteristic process of formation and mechanisms of fatigue are fundamentally characterized and the effect of chemical composition on cell chemistry, electrochemistry, and cycling stability is addressed on different length scales by use of state-of-the-art analytical techniques, ranging from "standard" characterization tools to combinations of advanced in situ and operando methods. Here, the results are presented and discussed within a broader scientific context. by several authors. Here, we focus on the detailed characterization of these materials on different length scales, including the processes during formation and fatigue.After a brief introduction of the different materials addressed here, their characteristic process of formation and mechanisms of fatigue are discussed with respect to cell chemistry, electrochemistry, and cycling stability. Based on the fundamental results of our experimental studies on the material level, the effect of formation and fatigue on different cell levels is evalu...

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Section: Recent Progress In Electrode Materialsmentioning

confidence: 99%

Advances and Prospects of Sulfide All‐Solid‐State Lithium Batteries via One‐to‐One Comparison with Conventional Liquid Lithium Ion Batteries

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Owing to the safety issue of lithium ion batteries (LIBs) under the harsh operating conditions of electric vehicles and mobile devices, all‐solid‐state lithium batteries (ASSLBs) that utilize inorganic solid electrolytes are regarded as a secure next‐generation battery system. Significant efforts are devoted to developing each component of ASSLBs, such as the solid electrolyte and the active materials, which have led to considerable improvements in their electrochemical properties. Among the various solid electrolytes such as sulfide, polymer, and oxide, the sulfide solid electrolyte is considered as the most promising candidate for commercialization because of its high lithium ion conductivity and mechanical properties. However, the disparity in energy and power density between the current sulfide ASSLBs and conventional LIBs is still wide, owing to a lack of understanding of the battery electrode system. Representative developments of ASSLBs in terms of the sulfide solid electrolyte, active materials, and electrode engineering are presented with emphasis on the current status of their electrochemical performances, compared to those of LIBs. As a rational method to realizing high energy sulfide ASSLBs, the requirements for the sulfide solid electrolytes and active materials are provided along through simple experimental demonstrations. Potential future research directions in the development of commercially viable sulfide ASSLBs are suggested.

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Gas Evolution in All-Solid-State Battery Cells

Cited by 120 publications

References 32 publications

Phase Transformation Behavior and Stability of LiNiO₂ Cathode Material for Li‐Ion Batteries Obtained from In Situ Gas Analysis and Operando X‐Ray Diffraction

Phase Transformation Behavior and Stability of LiNiO₂ Cathode Material for Li‐Ion Batteries Obtained from In Situ Gas Analysis and Operando X‐Ray Diffraction

Chemical, Structural, and Electronic Aspects of Formation and Degradation Behavior on Different Length Scales of Ni‐Rich NCM and Li‐Rich HE‐NCM Cathode Materials in Li‐Ion Batteries

Advances and Prospects of Sulfide All‐Solid‐State Lithium Batteries via One‐to‐One Comparison with Conventional Liquid Lithium Ion Batteries

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Gas Evolution in All-Solid-State Battery Cells

Cited by 120 publications

References 32 publications

Phase Transformation Behavior and Stability of LiNiO2 Cathode Material for Li‐Ion Batteries Obtained from In Situ Gas Analysis and Operando X‐Ray Diffraction

Phase Transformation Behavior and Stability of LiNiO2 Cathode Material for Li‐Ion Batteries Obtained from In Situ Gas Analysis and Operando X‐Ray Diffraction

Chemical, Structural, and Electronic Aspects of Formation and Degradation Behavior on Different Length Scales of Ni‐Rich NCM and Li‐Rich HE‐NCM Cathode Materials in Li‐Ion Batteries

Advances and Prospects of Sulfide All‐Solid‐State Lithium Batteries via One‐to‐One Comparison with Conventional Liquid Lithium Ion Batteries

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Phase Transformation Behavior and Stability of LiNiO₂ Cathode Material for Li‐Ion Batteries Obtained from In Situ Gas Analysis and Operando X‐Ray Diffraction

Phase Transformation Behavior and Stability of LiNiO₂ Cathode Material for Li‐Ion Batteries Obtained from In Situ Gas Analysis and Operando X‐Ray Diffraction