Eliminating Local Electrolyte Failure Induced by Asynchronous Reaction for High‐Loading and Long‐Lifespan All‐Solid‐State Batteries

An, Hanwen; Liu, Qingsong; Deng, Bangming; Wang, Jian; Li, Menglu; Li, Xin; Lou, Shuaifeng; Wang, Jiajun

doi:10.1002/adfm.202305186

Cited by 7 publications

(1 citation statement)

References 44 publications

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“…PEs have difficulty penetrating porous cathodes [80] , leading to non-uniform distribution of local electric fields at heterogeneous contact points, reducing the electrochemical stability of batteries. Zhu et al developed a liquid polymer electrolyte (LPE) composed of brush-like polymers with a main chain of polyphosphonitrile and a side chain of oligomeric EO [81] . LPE addresses issues such as electrolyte oxidation, poor lithium plating/stripping performance, and interface instability on the cathode.…”

Section: Interfacial Physical Contactsmentioning

confidence: 99%

Polymer-based electrolytes for high-voltage solid-state lithium batteries

Wang,

Chen,

et al. 2024

Energy Mater

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Increasing the charging cut-off voltage of lithium batteries is a feasible method to enhance the energy density. However, when batteries operate at high voltages (> 4.3 V), the degradation of liquid organic carbonate electrolyte is accelerated and may cause safety hazards. Polymer-based electrolytes with inherently high safety and good electrochemical stability can prevent the electrolyte degradation in high-voltage solid-state lithium batteries. This paper provides a comprehensive and in-depth review of the design strategies, recent developments, and scientific challenges associated with polymer-based electrolytes for high-voltage applications. Emphases are placed on the interfacial compatibility between electrolytes and cathodes, such as mechanical contacts and interface chemical stability, which are critical to the lifespan of high-voltage lithium batteries. Moreover, guidelines for the future development of high-voltage solid-state lithium batteries are also discussed.

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Section: Interfacial Physical Contactsmentioning

confidence: 99%

Polymer-based electrolytes for high-voltage solid-state lithium batteries

Wang,

Chen,

et al. 2024

Energy Mater

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Nature‐Inspired Strategy: Novel Borohydride‐Based Solid Electrolytes Extracted from Cathode‐Electrolyte Interphase

Yin,

Yan,

et al. 2024

Advanced Materials

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As the core component of all‐solid‐state batteries, current solid‐state electrolytes fail to simultaneously meet multiple demands, such as their own high performance, the chemical, electrochemical and mechanical compatibility of electrode interface. A fresh perspective is rather desired to guide the development of novel solid electrolytes with comprehensive performance. Herein, this work proposes a novel strategy to synthesize solid electrolytes extracted from cathode‐electrolyte interphase (CEI), which is inspired by peach trees secreting peach gum to prevent further damage. A proof‐of‐concept, using LiBH4‐Se and LiBH4‐S as prototypes, confirms that as‐synthesized electrolytes inherited and improved up the advantages of LiBH4 with unexpected compatibility toward multiple cathodes. It is believed that the family of new electrolytes will be continuously expanded under the guidance of this CEI‐derived concept.

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Constructing Nano‐Interlayer Inhibiting Interfacial Degradation toward High‐Voltage PEO‐Based All‐Solid‐State Lithium Batteries

Zhai,

Qu,

Ahmad

et al. 2024

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The interfacial instability between PEO‐based solid electrolyte (SPE) and high‐voltage cathode materials inhibits the longevity of high‐energy‐density all‐solid‐state polymer lithium metal batteries (ASSPLBs). Herein, for the first time it is demonstrated, that contact loss caused by gas generation from interfacial side reactions between the high‐voltage cathode and solid polymer electrolyte (SPE) can also arise in ASSPLBs. To alleviate the interfacial side reactions, a LiNb0.6Ti0.5O3 (LNTO) layer is well coated on LiNi0.83Co0.07Mn0.1O2 (NCM83), denoted as (CNCM83). The LNTO layer with low electronic conductivity reduces the decomposition drive force of SPE. Furthermore, Ti and Nb in the LNTO layer spontaneously migrate inside the NCM83 surface to form a strong Ti/Nb─O bond, stalling oxygen evolution in high‐voltage cathodes. The interfacial degradation phenomena, including SPE decomposition, detrimental phase transition and intragranular cracks of NCM83, and void formation between cathode and SPE, are effectively mitigated by the LNTO layer. Therefore, the growth rate of interfacial resistance (RCEI) decreases from 37.6 Ω h−0.5 for bare NCM83 to 2.4 Ω h−0.5 for CNCM83 at 4.2 V. Moreover, 4.2 V PEO‐based ASSPLBs achieve impressive cyclability with high capacity retention of 135 mAh g−1 (75%) even after 300 cycles at 0.5 C.

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Eliminating Local Electrolyte Failure Induced by Asynchronous Reaction for High‐Loading and Long‐Lifespan All‐Solid‐State Batteries

Cited by 7 publications

References 44 publications

Polymer-based electrolytes for high-voltage solid-state lithium batteries

Polymer-based electrolytes for high-voltage solid-state lithium batteries

Nature‐Inspired Strategy: Novel Borohydride‐Based Solid Electrolytes Extracted from Cathode‐Electrolyte Interphase

Constructing Nano‐Interlayer Inhibiting Interfacial Degradation toward High‐Voltage PEO‐Based All‐Solid‐State Lithium Batteries

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