Self‐Stabilized and Strongly Adhesive Supramolecular Polymer Protective Layer Enables Ultrahigh‐Rate and Large‐Capacity Lithium‐Metal Anode

Wang, Gang; Chen, Chao; Chen, Yunhua; Kang, Xiongwu; Yang, Chenghao; Wang, Fei; Liu, Yong; Xiong, Xunhui

doi:10.1002/anie.201913351

Cited by 209 publications

(127 citation statements)

References 40 publications

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“…l) Cycling performance of bare Li||NCM and LiPEO‐UPy@Li||NCM cells at 1 C. Reproduced with permission. [ 149 ] Copyright 2020, Wiley‐VCH. IV) Ionic selectivity: m) 3d molecular model of the polymer with intrinsic microporosity (PIM‐1).…”

Section: Strategies Of Tailoring Solid Electrolyte Interphase With Dementioning

confidence: 99%

Recent Progress in Understanding Solid Electrolyte Interphase on Lithium Metal Anodes

Jia

Wang

et al. 2020

Advanced Energy Materials

297

339

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Lithium metal batteries (LMBs) are one of the most promising candidates for next‐generation high‐energy‐density rechargeable batteries. Solid electrolyte interphase (SEI) on Li metal anodes plays a significant role in influencing the Li deposition morphology and the cycle life of LMBs. However, a thorough understanding on the mechanisms of SEI formation and evolution is still inadequate. In this review, the progress in understanding structures, properties, and influencing factors of SEI, as well as efficient strategies of tailoring SEI are focused upon. First, the compositions, models, and recent progress in characterizing atomic structures of SEI are summarized. Second, the properties of SEI, including electronic conduction, ionic conduction, stability, and mechanical properties are elucidated. Structures and properties of SEI are greatly affected by multiple factors, thus interactions between these factors and SEI are systematically discussed. Correlations of SEI with Li deposition morphology, rate capability, and cycle life are further summarized. Moreover, efficient strategies of tailoring SEI with desired properties, including in situ SEI and ex situ SEI, are also reviewed. Finally, future directions, including in‐operando techniques, multi‐modality approaches for characterization of SEI, and artificial intelligence assisted understanding of correlations between electrolyte components and SEI properties are proposed.

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Section: Strategies Of Tailoring Solid Electrolyte Interphase With Dementioning

confidence: 99%

Recent Progress in Understanding Solid Electrolyte Interphase on Lithium Metal Anodes

Jia

Wang

et al. 2020

Advanced Energy Materials

297

339

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“…To the best of our knowledge, the long cycling stability (3000 h) at such a high current density (20 mA cm −2 ) and areal capacity (10 mAh cm −2 ) of the Li@C 0.5 ‐MXene/AgNW anode is superior to all previously reported Li composite anodes (Figure 4c; Table S2, Supporting Information). [ 9,10,32,40,42,46,49,60–77 ] It also outperforms all Li metal anodes stabilized by other strategies (Table S3, Supporting Information), [ 15,16,20,21,78–86 ] such as SEI layer modification, [ 15,16,78–82 ] separator modification, [ 20,21 ] and electrolyte modification. [ 83–86 ] Moreover, similar to most previously published works, our Li@C 0.5 ‐MXene/AgNW composite anode exhibited better cycling stability in ether based electrolyte than that in carbonate based electrolytes (Figure S8, Supporting Information).…”

Section: Resultsmentioning

confidence: 99%

Polysiloxane Cross‐Linked Mechanically Stable MXene‐Based Lithium Host for Ultrastable Lithium Metal Anodes with Ultrahigh Current Densities and Capacities

Qian

Fan

Peng

et al. 2020

Adv Funct Materials

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The applications of lithium metal anode are limited by uncontrollable lithium dendrite growth and infinite volume changes during cycling. These fundamental issues are exacerbated at high cycling current densities and capacities. Herein, a mechanically stable and resilient lithium metal host is fabricated by covalently cross‐linking a highly‐conductive and lithiophilic MXene/silver nanowire scaffold through a silylation reaction between MXene nanosheets and polysiloxane. Compared with the control sample (an MXene scaffold assembled by weak van der Waals forces), the covalently cross‐linked MXene scaffold displays excellent mechanical strength and resilience, which is conducive to buffer the large internal stress fluctuations generated during rapid and deep lithium plating‐stripping and guaranteed that the integrated framework structure is maintained during long‐term charging‐discharging cycles. When used in a symmetric cell, the lithium composite anode based on the covalently cross‐linked MXene host affords an unprecedented cyclic lithium plating‐stripping stability of a record‐high 3000 h lifespan at an ultrahigh current density (20 mA cm−2) and areal capacity (10 mAh cm−2). When this composite anode is coupled with a LiNi0.5Co0.2Mn0.3O2 cathode, the full cell delivers an ultrahigh rate of 10 C for up to 1000 cycles, with an average capacity decay of 0.043% per cycle and a stable Coulombic efficiency of 98.7%.

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“…investigated a SH copolymer based on pendant poly(ethylene oxide) segments and UPy groups as a self‐stabilizing and strongly adhesive artificial protective layer for LMBs. [ 191 ] Again, the self‐healing property is guaranteed by UPy quadruple hydrogen bonding moieties that trigger the intrinsic autonomous recovery of this robust artificial SEI. Thanks to the strong adhesion between Li and coating, and to the resulting homogenization of Li + flux, uncontrolled nucleation is prevented and dendritic growth is inhibited.…”

Section: Self‐healable Batteriesmentioning

confidence: 99%

Exploiting Self‐Healing in Lithium Batteries: Strategies for Next‐Generation Energy Storage Devices

Mezzomo

Ferrara

Brugnetti

et al. 2020

Advanced Energy Materials

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An improved lifetime can be achieved by exploiting higher intrinsic durability of the materials, or by repairing the deteriorated component and restoring its original properties. Indeed, in the last years, several attempts to improve the lifetime of widespread devices (prosthetics, batteries, solar cells, lighting devices, etc.) were reported. [4-8] However, traditional techniques (welding, gluing, patching) need in situ application of fresh healing materials, and are not applicable to many modern complex devices that require disassembly and targeted operations well beyond the expertise of the final user. Moreover, repair by specialized personnel may be impossible or unsustainable from an economic point of view. To overcome these problems, a radically new strategy that can pave the way for more durable materials is emerging: the concept of selfhealing (SH). [9] This term refers to those smart materials that can automatically restore some, or all, of their functions after having suffered of an external damage that degraded their original properties. This usually has to do with autonomous recovery of physical cracks, but may include a wider range of features prolonging the lifetime of a material/ device, which space from anticorrosion to bactericidal properties. [10,11] By tailoring an appropriate response of the system, it becomes possible to design a material that can respond to various external perturbations and accommodate their eventual disturbance. The idea at the base of this approach is usually defined as biomimetic, since it takes inspiration from nature and mimic it in solving complex technological problems. [12] During the years, many different materials or technologies, naively depicted in Figure 1a, have taken inspiration from nature (as Velcro tape which mimics tiny hooks on bur fruits, naturally ventilated facades that mime termites' mounds, hydrophobic lotus-leaf coatings, and iridescent or adhesive surfaces respectively inspired by butterflies and geckos) and self-healing is not an exception. [13-15] In fact, in nature many organisms are capable of healing damages and of restoring their functionalities: skin, bones, plants, and other living systems can sense any failure and reconstruct the injured biological part which recovers its original functionalities. [16-18] Since these features lengthen the life of natural living beings, analog mechanisms can be exploited in artificial self-healing materials to benefit the Major improvements in stability and performance of batteries are still required for a more effective diffusion in industrial key sectors such as automotive and foldable electronics. An encouraging route resides in the implementation into energy storage devices of self-healing features, which can effectively oppose the deterioration upon cycling that is typical of these devices. In order to provide a comprehensive view of the topic, this Review first summarizes the main self-healing processes that have emerged in the multifaceted field of smart materials, classifying them on the basis of t...

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Self‐Stabilized and Strongly Adhesive Supramolecular Polymer Protective Layer Enables Ultrahigh‐Rate and Large‐Capacity Lithium‐Metal Anode

Abstract: Supportinginformation and the ORCID identification number(s) for the author(s) of this article can be found under: https://doi.

Cited by 209 publications

References 40 publications

Recent Progress in Understanding Solid Electrolyte Interphase on Lithium Metal Anodes

Recent Progress in Understanding Solid Electrolyte Interphase on Lithium Metal Anodes

Polysiloxane Cross‐Linked Mechanically Stable MXene‐Based Lithium Host for Ultrastable Lithium Metal Anodes with Ultrahigh Current Densities and Capacities

Exploiting Self‐Healing in Lithium Batteries: Strategies for Next‐Generation Energy Storage Devices

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