Behavior of Solid Electrolyte in Li-Polymer Battery with NMC Cathode via in-Situ Scanning Electron Microscopy

Kaboli, Shirin; Demers, Hendrix; Paolella, Andrea; Darwiche, Ali; Dontigny, Martin; Clément, Daniel; Guerfi, Abdelbast; Trudeau, Michel; Goodenough, John B.; Zaghib, Karim

doi:10.1021/acs.nanolett.9b04452

Cited by 91 publications

(63 citation statements)

References 25 publications

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“…Zaghib and coworkers have done substantial work in this field. 67,68,70 They studied the discharging and charging process of cells with Li • anode, PEO-based polymer electrolyte, and various cathode like NMC, LiFePO 4 , LiV 3 O 8 (LVP) ( Figure 5A), etc. 70 The formation and evolution of the SEI and dendrites have been clearly demonstrated.…”

Section: In-situ Semmentioning

confidence: 99%

Electrolyte and anode‐electrolyte interphase in solid‐state lithium metal polymer batteries: A perspective

Zhang

Chen

et al. 2021

SusMat

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The interest for solid-state lithium metal (Li •) batteries (SSLMBs) has been growing exponentially in recent years in view of their higher energy density and eliminated safety concerns. Solid polymer electrolytes (SPEs) are soft ionic conductors which can be easily processed into thin films at industrial level; these unique features confer solid-state Li • polymer batteries (SSLMPBs, i.e., SSLMBs utilizing SPEs as electrolytes) distinct advantages compared to SSLMBs containing other electrolytes. In this article, we briefly review recent progresses and achievements in SSLMPBs including the improvement of ionic conductivity of SPEs and their interfacial stability with Li • anode. Moreover, we outline several advanced in-situ and ex-situ characterizing techniques which could assist in-depth understanding of the anode-electrolyte interphases in SSLMPBs. This article is hoped not only to update the state-of-the-art in the research on SSLMPBs but also to bring intriguing insights that could improve the fundamental properties (e.g., transport, dendrite formation, and growth, etc.) and electrochemical performance of SSLMPBs. K E Y W O R D S anode-electrolyte interphase, solid polymer electrolytes, solid-state batteries, solid-state lithium metal polymer batteries This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.

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Section: In-situ Semmentioning

confidence: 99%

Electrolyte and anode‐electrolyte interphase in solid‐state lithium metal polymer batteries: A perspective

Zhang

Chen

et al. 2021

SusMat

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“…It has been proved that a chemically unstable SPE will, very likely, be poorly compatible with active electrode materials, generating gas and harmful small molecules which are detrimental to the battery safety and service life. [ 69 ] The cathode materials are most active in the charged state and, if SPEs are chemically unstable, can catalyze SPE decomposition. [ 14,70 ]…”

Section: Criteria For Spesmentioning

confidence: 99%

Solid Polymer Electrolytes with High Conductivity and Transference Number of Li Ions for Li‐Based Rechargeable Batteries

et al. 2021

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Smart electronics and wearable devices require batteries with increased energy density, enhanced safety, and improved mechanical flexibility. However, current state‐of‐the‐art Li‐based rechargeable batteries (LBRBs) use highly reactive and flowable liquid electrolytes, severely limiting their ability to meet the above requirements. Therefore, solid polymer electrolytes (SPEs) are introduced to tackle the issues of liquid electrolytes. Nevertheless, due to their low Li+ conductivity and Li+ transference number (LITN) (around 10−5 S cm−1 and 0.5, respectively), SPE‐based room temperature LBRBs are still in their early stages of development. This paper reviews the principles of Li+ conduction inside SPEs and the corresponding strategies to improve the Li+ conductivity and LITN of SPEs. Some representative applications of SPEs in high‐energy density, safe, and flexible LBRBs are then introduced and prospected.

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“…Recently, in situ scanning electron microscopy (SEM) was employed to monitor the structural evolution of an NMC/SPE/Li cell during cycling at 50 °C. [ 320 ] As a result, the progressive decomposition of the SPEs was the principal failure mechanism, which contributed to the outgassing of the cell during cycling. This phenomenon led to a gradual decaying of capacity and efficiency.…”

Section: Conclusion and Perspectivementioning

confidence: 99%

Rechargeable Battery Electrolytes Capable of Operating over Wide Temperature Windows and Delivering High Safety

Lin

Zhou

Liu

et al. 2020

Advanced Energy Materials

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self-discharge rates. [1-3] LIBs permeate nearly every aspect of human life. They are widely used in portable electronics (e.g., smartphones, smart-watches, and laptops), transportation (e.g., electric and hybrid vehicles), and biomedical applications (e.g., cardiac pacemakers and cochlear implants). In light of these achievements, J.B. Goodenough, M.S. Whittingham, and A. Yoshino won the 2019 Nobel prize in chemistry. [4] Despite the considerable success of conventional LIBs, their operational regime is typically around room temperature (RT). Operating at low (<0 °C) or high (>60 °C) temperatures usually deteriorate the performance and leads to safety risks. [5] We should also note that commercial LIBs are highly hazardous as they can ignite and explode in case of an accident, overheating, and overcharging, requiring more stringent safety standards, e.g., wide temperature operability and nonflammability. For example, electric vehicles require battery systems that can deliver a stable performance while maintaining a high energy density even in extreme climates, such as cold mountainous areas, where the temperatures can be as low as −40 °C, and hot deserts, where equipment exposed to sunlight can reach temperatures exceeding 70 °C. [6] Moreover, task-specific applications call for reliable energy storage solutions at extreme temperatures, including subsurface exploration (such as for mineral, oil, and gas), aerospace engineering, safety and rescue, and sterilizable medical devices. [2] Conventional LIBs are composed of a positive electrode or cathode (e.g., LiFePO 4 (LFP), LiNi x Mn y Co z O 2 (x + y + z = 1, NMC) and LiCoO 2 (LCO)), an electrolyte (including solvents, Li salts, and additives), a separator (typically a polyolefin membrane), and a negative electrode or anode (e.g., graphite and Li 4 Ti 5 O 12 (LTO)). Generally, the electrode materials are nonflammable and thermal stable (>300 °C). While the polyolefin membrane will melt/shrink over 120 °C, the commercial separators composited with ceramic nanoparticle (e.g., SiO 2 and Al 2 O 3) have been developed to reduce thermal shrinkage when exposed to overheating. [7,8] Therefore, the major challenge of commercial LIBs at extreme operating temperatures comes to the electrolyte. Carbonates are commonly used as solvents for conventional LIB electrolytes. However, these compounds are Li-ion batteries (LIBs) are the energy storage systems of choice for portable electronics and electric vehicles. Due to the growing deployment of energy storage solutions, LIBs are increasingly required to function safely and steadily over a broad range of operational conditions. However, the conventional electrolytes used in LIBs will malfunction when the temperatures fall below zero or elevate above 60 °C. Further, conventional electrolytes are toxic and flammable, leading to severe safety risks, especially in the case of an accident or overheating. Therefore, an ever-growing body of research has been dedicated to the development of electrolytes characterized by high ionic conduct...

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Behavior of Solid Electrolyte in Li-Polymer Battery with NMC Cathode via in-Situ Scanning Electron Microscopy

Cited by 91 publications

References 25 publications

Electrolyte and anode‐electrolyte interphase in solid‐state lithium metal polymer batteries: A perspective

Electrolyte and anode‐electrolyte interphase in solid‐state lithium metal polymer batteries: A perspective

Solid Polymer Electrolytes with High Conductivity and Transference Number of Li Ions for Li‐Based Rechargeable Batteries

Rechargeable Battery Electrolytes Capable of Operating over Wide Temperature Windows and Delivering High Safety

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