Multifunctional Protection Layers via a Self-Driven Chemical Reaction To Stabilize Lithium Metal Anodes

Li, Boyu; Su, Qingmei; Zhang, Jun; Yu, Lintao; Du, Gaohui; Ding, Shukai; Zhang, Miao; Zhao, Wenqi; Xu, Bingshe

doi:10.1021/acsami.1c19158

Cited by 14 publications

(13 citation statements)

References 56 publications

(92 reference statements)

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“…High interfacial resistance with lithium leads to lower power output and low efficiency. Perovskite has the general formula ABO 3 (A = Ca, Sr or La; B = Al, Ti) [58]. The most studied perovskite electrolyte is Li 3x La 2/3−x TiO 3 (LLTO), with bulk Li+ ion conductivity of 10 −3 S. cm −1 at 25 • C [59].…”

Section: Solid-state Electrolytesmentioning

confidence: 99%

On the Current and Future Outlook of Battery Chemistries for Electric Vehicles—Mini Review

et al. 2022

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As the electrification of the transportation industry is accelerating, the energy storage markets are trying to secure more reliable and environmentally benign materials. Advanced materials are the key performance enablers of batteries as well as a key element determining the cost structure, environmental impact, and recyclability of battery cells. In this review, we analyzed the state-of-the-art cell chemistries and active electrode and electrolyte materials for electric vehicles batteries, which we believe will dominate the battery chemistry landscape in the next decade. We believe that major breakthroughs and innovations in electrode materials such as high-nickel cathodes and silicon and metallic lithium anodes, along with novel liquid electrolyte formulations and solid-state electrolytes, will significantly improve the specific capacity of lithium batteries and reduce their cost, leading to accelerated mass-market penetration of EVs.

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Section: Solid-state Electrolytesmentioning

confidence: 99%

On the Current and Future Outlook of Battery Chemistries for Electric Vehicles—Mini Review

et al. 2022

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“…The organic-inorganic hybrid film in combining the merits of each component is an alternative solution to effectively protect Li metal anode. [149][150][151] Dense and highly conductive inorganic components are much involved, such as LiF, [148,152,153] Li 2 O, [154] Li 2 S, [155][156][157] etc. An efficient multifunctional silanization interface on the Li metal anode surface was constructed for high-energy Li metal pouch cells.…”

Section: Designing Artificial Seimentioning

confidence: 99%

“…Organic-inorganic hybrid film was proposed to integrate the merits of organic and inorganic components. [149][150][151] 2D materials were often adopted in the composite film due to their high strength and ionic conductivity, as well as a facile assembly process, such as vermiculite, [164,165] graphene oxide, etc. Specifically, 2D materials can accelerate Li-ion hopping at the surface between polymer chains and functionalized inorganic contents as well as reduce the crystallization degree of organic contents by these inorganic contents, thereby enhancing the Li-ion conductivity.…”

Section: Designing Artificial Seimentioning

confidence: 99%

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Working Principles of Lithium Metal Anode in Pouch Cells

Sun

Cheng

et al. 2022

Advanced Energy Materials

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Advanced energy storage technology represented by lithium (Li)-ion batteries (LIBs) has revolutionized human life in recent years. The energy density of LIBs based on intercalation chemistry is approaching its theoretical limit after unremitting efforts for the past three decades. The state-of-the-art LIBs with graphite anode can only achieve an energy density lower than 300 Wh kg −1 . [1] This cannot satisfy the increasing demands for portable electronic devices, electric vehicles, and stationary energy storage systems. [2] Therefore, it is urgently called for next-generation batteries with a high energy density, long lifespan, and high safety performance. [3,4] Electrode material is of great importance in determining the energy density of batteries. [5] As the holy grail anode, Li metal possesses the ultrahigh theoretical specific capacity (3860 mAh g −1 ) and low potential (−3.04 V vs the standard hydrogen electrode). The promising feature renders Li metal anode to be an indispensable candidate for constructing next-generation high-energy-density batteries. [6] A high energy density of 400 or even 500 Wh kg −1 can be achieved with Li metal batteries (LMBs) matching Ni-rich LiNi x Co y Mn (1−x−y) O 2 (0 < x, y <1), oxygen, or sulfur cathodes, etc. [7][8][9] However, the conversion chemistry and high reactivity of Li metal also bring great challenges to the design of robust LMBs with long lifespan and high safety. [10,11] Specifically, Li dendrite growth and infinite volume variation lead to unstable solid electrolyte interphase (SEI) on Li metal anodes, resulting in low Li utilization, capacity decline, and even safety risk, [12] severely hindering the practical applications of LMBs. [13][14][15] Recently, extensive strategies have been exploited to control the dendrite growth of Li metal anodes, including engineering electrolytes and additives, [16] designing 3D host structures, [17][18][19] constructing artificial SEI, [20,21] applying solid-state electrolyte (SSE), [22][23][24] and adjusting operation conditions. [25] A high Coulombic efficiency (>99.9%) and long lifespan (>1000 cycles) have been reported in the materials-level coin cells. [26][27][28] Notably, Li dendrite growth is primarily driven by the kinetical limitation of Li-ion diffusion near the electrolyte/electrode interface. Serious dendrite issues can be encountered under harsh operating conditions in pouch cells, considering the accelerated consumption of Li ions at large currents and high Lithium metal battery has been considered as one of the potential candidates for next-generation energy storage systems. However, the dendrite growth issue in Li anodes results in low practical energy density, short lifespan, and poor safety performance. The strategies in suppressing Li dendrite growth are mostly conducted in materials-level coin cells, while their validity in device-level pouch cells is still under debate. It is imperative to address dendrite issues in pouch cells to realize the practical application of Li metal batteries. This review prese...

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“…However, the ionic conductivity of PEO‐based SPEs (in the range of 10 −7 to 10 −6 S cm −1 ) is far lower than that of liquid electrolytes (~10 −2 S cm −1 ) owing to its high crystallinity at room temperature (RT) and the intrinsically low mobility of polymer chains 13,14 . Several strategies have been attempted to overcome this deficiency, including the fabrication of cross‐linked/interpenetrating‐network PEO‐based copolymers, 11,15–18 and the addition of functional fillers to PEO matrix 19–22 . In‐depth investigations have revealed that active nanofillers could provide additional Li + transfer pathways in SPEs and elevate the Li + concentration in the space‐charge region at the filler/polymer interface 23 .…”

Section: Introductionmentioning

confidence: 99%

Nanocomposite polymer electrolytes for solid‐state lithium‐ion batteries with enhanced electrochemical properties

Liu

Zhang

Liu

et al. 2022

J of Applied Polymer Sci

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Solid‐state polymer electrolytes (SPEs) have attracted significant attention owing to their improvement in high energy density and high safety performance. However, the low lithium‐ion conductivity of SPEs at room temperature restricts their further application in lithium‐ion batteries (LIBs). Herein, we propose a novel poly (ethylene oxide) (PEO)‐based nanocomposite polymer electrolytes by blending boron‐containing nanoparticles (BNs) in the PEO matrix (abbreviated as: PEO/BNs NPEs). The boron atom of BNs is sp2‐hybridized and contains an empty p‐orbital that can interact with the anion of lithium salt, promoting the dissociation of the lithium salts. In addition, the introduction of the BNs could reduce the crystallinity of PEO. And thus, the ionic conductivity of PEO/BNs NPEs could reach as high as 1.19 × 10−3 S cm−1 at 60°C. Compared to the pure PEO solid polymer electrolyte (PEO SPEs), the PEO/BNs NPEs showed a wider electrochemical window (5.5 V) and larger lithium‐ion migration number (0.43). In addition, the cells assembled with PEO/BNs NPEs exhibited good cycle performance with an initial discharge capacity of 142.5 mA h g−1 and capacity retention of 87.7% after 200 cycles at 2 C (60°C).

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Multifunctional Protection Layers via a Self-Driven Chemical Reaction To Stabilize Lithium Metal Anodes

Cited by 14 publications

References 56 publications

On the Current and Future Outlook of Battery Chemistries for Electric Vehicles—Mini Review

On the Current and Future Outlook of Battery Chemistries for Electric Vehicles—Mini Review

Working Principles of Lithium Metal Anode in Pouch Cells

Nanocomposite polymer electrolytes for solid‐state lithium‐ion batteries with enhanced electrochemical properties

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