Study of the interface nickel/composite cathode of industrially made Li/V2O5 polymer (POE) batteries working at 90 °C

André, Pascal; Deniard, Philippe; Brec, R.; Lascaud, S.

doi:10.1016/s0378-7753(01)00974-0

Cited by 13 publications

(10 citation statements)

References 2 publications

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Section: Stability Issues In Solid-state Batteriesmentioning

confidence: 99%

“…The electrochemical stability of polymer electrolytes has long been considered a main challenge for SSE applications in high voltage battery systems. Therefore, cathodes with low charge/discharge platform, such as LiFePO 4 268 and V 2 O 5 , 269,270 were usually utilized in solid polymer lithium batteries. LSV was performed to examine the electrochemical window of solid polymer electrolytes, and it was reported that the electrochemical stability of polyether-derived electrolytes was in the range 3.7−4.5 V. 134,271,272 However, it was also found that copolymer SSEs exhibited enhanced electrochemical stability; for example, a solid polymer electrolyte with the composition PAN−PEO− LiClO 4 was reported to be stable up to 4.8 V 75 vs Li/Li + .…”

Section: Electrochemical Stabilitymentioning

confidence: 99%

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Approaching Practically Accessible Solid-State Batteries: Stability Issues Related to Solid Electrolytes and Interfaces

et al. 2019

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Solid-state batteries have been attracting wide attention for next generation energy storage devices due to the probability to realize higher energy density and superior safety performance compared with the state-of-the-art lithium ion batteries. However, there are still intimidating challenges for developing low cost and industrially scalable solid-state batteries with high energy density and stable cycling life for large-scale energy storage and electric vehicle applications. This review presents an overview on the scientific challenges, fundamental mechanisms, and design strategies for solid-state batteries, specifically focusing on the stability issues of solid-state electrolytes and the associated interfaces with both cathode and anode electrodes. First, we give a brief overview on the history of solid-state battery technologies, followed by introduction and discussion on different types of solid-state electrolytes. Then, the associated stability issues, from phenomena to fundamental understandings, are intensively discussed, including chemical, electrochemical, mechanical, and thermal stability issues; effective optimization strategies are also summarized. State-of-the-art characterization techniques and in situ and operando measurement methods deployed and developed to study the aforementioned issues are summarized as well. Following the obtained insights, perspectives are given in the end on how to design practically accessible solid-state batteries in the future. CONTENTS 1. Introduction 6822 2. Solid-State Battery Technologies 6822 2.1. Brief Overview of Solid-State Batteries and the Research History 6822 2.2. State-of-the-Art Solid-State Batteries 6823 2.3. Solid-State Batteries and Classifications 6824 2.4. Grand Challenges in Solid-State Batteries 6825 3. Categorizing and Comparing Various Solid-State Electrolytes 6825 3.1. Solid Polymer Electrolytes 6825 3.1.1.

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Section: Stability Issues In Solid-state Batteriesmentioning

confidence: 99%

Section: Electrochemical Stabilitymentioning

confidence: 99%

Approaching Practically Accessible Solid-State Batteries: Stability Issues Related to Solid Electrolytes and Interfaces

et al. 2019

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“…[ 3 ] Despite some early studies showing the stabilization of PEO‐SPEs to 4.2 V (versus Li/Li + ), [ 4 ] subsequent investigations have indicated that the reported “wide electrochemical window (EW)” is actually caused by kinetic polarization. [ 5 ] Xia et al firstly examined the EW of PEO‐SPEs by performing linear sweep voltammetry (LSV) measurements with carbon composite electrodes, and found that the oxidation of PEO‐SPEs started to occur at around 3.8 V. [ 5 ] Such restricted upper voltage limit was further confirmed by a sudden degradation of cycle life when the cut‐off charging voltage was increased to above 3.9 V. [ 6 ] Therefore, the widely reported PEO‐based ASSBs can only employ cathodes with low lithium storage potentials, for example V 2 O 5 [ 7 ] and LiFePO 4 , [ 8 ] as the capacity fades rapidly when PEO is paired with high voltage cathodes of above 3.9 V (e.g., LiCoO 2 , LiNi x Co y Mn 1‐ x ‐ y O 2 ). [ 9,10 ] Various strategies, ranging from compositing with inorganic filler [ 11,12 ] to building co‐polymer, [ 13,14 ] have been pursued to extend EW of SPEs.…”

Section: Introductionmentioning

confidence: 98%

Enabling Stable Cycling of 4.2 V High‐Voltage All‐Solid‐State Batteries with PEO‐Based Solid Electrolyte

Qiu

Liu

Chen

et al. 2020

Adv Funct Materials

260

162

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Poly(ethylene oxide) (PEO)-based solid electrolytes are expected to be exploited in solid-state batteries with high safety. Its narrow electrochemical window, however, limits the potential for high voltage and high energy density applications. Herein the electrochemical oxidation behavior of PEO and the failure mechanisms of LiCoO 2 -PEO solid-state batteries are studied. It is found that although for pure PEO it starts to oxidize at a voltage of above 3.9 V versus Li/Li + , the decomposition products have appropriate Li + conductivity that unexpectedly form a relatively stable cathode electrolyte interphase (CEI) layer at the PEO and electrode interface. The performance degradation of the LiCoO 2 -PEO battery originates from the strong oxidizing ability of LiCoO 2 after delithiation at high voltages, which accelerates the decomposition of PEO and drives the self-oxygen-release of LiCoO 2 , leading to the unceasing growth of CEI and the destruction of the LiCoO 2 surface. When LiCoO 2 is well coated or a stable cathode LiMn 0.7 Fe 0.3 PO 4 is used, a substantially improved electrochemical performance can be achieved, with 88.6% capacity retention after 50 cycles for Li 1.4 Al 0.4 Ti 1.6 (PO 4 ) 3 coated LiCoO 2 and 90.3% capacity retention after 100 cycles for LiMn 0.7 Fe 0.3 PO 4 . The results suggest that, when paired with stable cathodes, the PEO-based solid polymer electrolytes could be compatible with high voltage operation.

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“…However, the stiff interfacial contact and severe polarization between electrodes and electrolytes restrict their application in LMBs. , Owing to their compatibility with existing battery technologies, solid polymer electrolytes (SPEs) are one of the most promising electrolyte materials because of their high mechanical flexibility, viscoelasticity, and easy processing. , Moreover, SPEs show better contact and stability with electrodes, thereby effectively reducing interfacial resistance between electrolytes and electrodes. In various polymer electrolyte systems, lithium salts (LiX) in poly(oxyethylene) (PEO) are the most popular solid polymer electrolyte matrix because of their good film-forming property, low density, and excellent stability against lithium metal. , These advantages greatly promote the commercialization of PEO-LiX SPEs, but their narrow electrochemical stability window (onset decomposition voltage ∼3.8 V vs Li/Li + ) limits their application to low-voltage battery systems, such as LiFePO 4 and V 2 O 5 . The polymer redox voltage window for application to high-voltage cathode (e.g., LiCoO 2 , LiNi x Co y Mn 1– x – y O 2 ) must be enhanced to meet the growing demand for high-energy-density batteries.…”

Section: Introductionmentioning

confidence: 99%

“…16,17 These advantages greatly promote the commercialization of PEO-LiX SPEs, but their narrow electrochemical stability window (onset decomposition voltage ∼3.8 V vs Li/Li + ) limits their application to low-voltage battery systems, such as LiFePO 4 and V 2 O 5 . 18 The polymer redox voltage window for application to high-voltage cathode (e.g., LiCoO 2 , Li-Ni x Co y Mn 1−x−y O 2 ) must be enhanced to meet the growing demand for high-energy-density batteries. Various strategies, such as cross-linking, 19 formation of block copolymers, 20 and introduction of ceramic fillers, 21 have been devised to compensate for the deficiency of PEO-based polymer electrolytes.…”

Section: Introductionmentioning

confidence: 99%

Double-Layered Multifunctional Composite Electrolytes for High-Voltage Solid-State Lithium-Metal Batteries

Yao

Zhu

et al. 2021

ACS Appl. Mater. Interfaces

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The need for safe storage systems with a high energy density has increased the interest in high-voltage solid-state Li-metal batteries (LMBs). Solid-state electrolytes, as a key material for LMBs, must be stable against both high-voltage cathodes and Li anodes. However, the weak interfacial contact between the electrolytes and electrodes poses challenges in the practical applications of LMBs. In this study, a double-layered solid composite electrolyte (DLSCE) was synthesized by introducing an antioxidative poly(vinylidene fluoride-hexafluoropropylene) (PVDF-HFP)-10 wt % Li1.3Al0.3Ti1.7(PO4)3 (LATP) to the cathode interface, whereas a lithium-friendly poly(oxyethylene) (PEO)-5 wt % LATP was made to come into contact with Li metal. Owing to the heterogeneous double-layered structure of the DLSCE, a high ionic transfer number (0.43), high ionic conductivity (1.49 × 10–4 S/cm), and a wide redox window (4.82 V) were obtained at ambient temperature. Moreover, the DLSCE showed excellent Li-metal stability, thereby enabling the Li–Li symmetric cells to stably run for over 600 h at 0.2 mA/cm2 with effective lithium dendrite inhibition. When paired with a high-voltage LiNi1/3Co1/3Mn1/3O2 cathode, the Li/DLSCE/NCM111 cell exhibited excellent electrochemical performance: long-term cyclability with 85% capacity retention could be conducted at 0.2C after 100 cycles corresponding to 100% Coulombic efficiencies.

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Study of the interface nickel/composite cathode of industrially made Li/V2O5 polymer (POE) batteries working at 90 °C

Cited by 13 publications

References 2 publications

Approaching Practically Accessible Solid-State Batteries: Stability Issues Related to Solid Electrolytes and Interfaces

Approaching Practically Accessible Solid-State Batteries: Stability Issues Related to Solid Electrolytes and Interfaces

Enabling Stable Cycling of 4.2 V High‐Voltage All‐Solid‐State Batteries with PEO‐Based Solid Electrolyte

Double-Layered Multifunctional Composite Electrolytes for High-Voltage Solid-State Lithium-Metal Batteries

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