Poly(dimethylsiloxane) Thin Film as a Stable Interfacial Layer for High‐Performance Lithium‐Metal Battery Anodes

Zhu, Bin; Jin, Yan; Hu, Xiaozhen; Zheng, Qinghui; Zhang, Su; Wang, Qianjin; Zhu, Jing

doi:10.1002/adma.201603755

Cited by 483 publications

(359 citation statements)

References 31 publications

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“…For instance, a uniform and stable silane film could be facilely grown on lithium plates by simple hydrolysis of tetraethoxysilane since the abundant free hydroxyl groups on the surface of lithium acted as initiation hydrolysis sites. [32] Through a simple acid treatment, a PDMS film with nanoporous structure could be further achieved to improve its Li + conductivity, rendering the porous PDMS-lithium hybrid to have an excellent cycling stability with Coulombic efficiency of ≈95% over 200 cycles. Similarly, a uniform polydimethylsiloxane (PDMS) film was also synthesized onto the surface of lithium anode via a sol-gel method (Figure 3).…”

Section: Surficial Engineering Of Metallic Lithium Anodes By Inactivementioning

confidence: 99%

“…In order to improve the lithium-ionic conductive of protective films, an ionic conductive salt of Li 3 N was formed as protective films by directly blooming N 2 gas on lithium metal surface. [32] Copyright 2017, Wiley-VCH. Very recently, a new inorganic protective film of Li 3 PO 4 was in situ formed by immersing pristine lithium plates in H 3 PO 4 -dimethyl sulphoxide (DMSO) solution.…”

Section: Surficial Engineering Of Metallic Lithium Anodes By Inactivementioning

confidence: 99%

“…As a consequence, the 3D lithium-Cu electrode exhibited a high stable and low voltage hysteresis in symmetric cell and exhibited a high Columbic efficiency of 99% and long cycling lifespan in a full cell with LiFePO 4 as cathode. [32] Copyright 2017, Wiley-VCH. [47] Hence, directly employing lithium alloys is becoming another effective strategy for overcoming the problems of complex electrochemical deposition process.…”

Section: Regulating Electric Fields or Decreasing Effective Current Dmentioning

confidence: 99%

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A Material Perspective of Rechargeable Metallic Lithium Anodes

Wang

Yang

2018

Advanced Energy Materials

109

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Rechargeable lithium‐based batteries are long considered as the most promising candidates for application in various electronic devices, electric vehicles, and even electrical grids owing to their ultrahigh energy densities. However, to date, metallic lithium‐based batteries are still far from practical applications due to the low Coulombic efficiency and fast capacity decay of lithium anodes. The poor electrochemical performances of metallic lithium anodes are inherently related to random growth of lithium dendrites and infinite volume charge of lithium anodes. In this review, the failure mechanisms of metallic lithium anodes are summarized and ascribed to the unstable and inhomogeneous solid electrolyte interphase, uneven distributions of electric field, and lithium‐ion flux during the lithium plating processes. Correspondingly, efficient strategies for mitigating these problems, including surficial engineering, electric field, and lithium‐ion flux regulation are discussed from the perspective of anode materials. Finally, an outlook is proposed for the design and fabrication of next‐generation rechargeable metallic lithium anodes that aims to address the intrinsic problems of metallic lithium anodes.

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Section: Surficial Engineering Of Metallic Lithium Anodes By Inactivementioning

confidence: 99%

Section: Surficial Engineering Of Metallic Lithium Anodes By Inactivementioning

confidence: 99%

Section: Regulating Electric Fields or Decreasing Effective Current Dmentioning

confidence: 99%

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A Material Perspective of Rechargeable Metallic Lithium Anodes

Wang

Yang

2018

Advanced Energy Materials

109

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“…Due to its simplicity, various coating methods have been proposed and nearly all the coating materials can suppress Li dendrite growth under certain conditions. The coating materials include Al 2 O 3 , 108,109 carbon, 110,111 some polymers [112][113][114] and some alloys, 115,116 etc. The Li−S battery with a thin Li−Al alloy coating layer on the Li anode exhibits a better cycling performance than the one with pure Li anode.…”

Section: Metal Protection In Li−s Batteriesmentioning

confidence: 99%

Review—Li Metal Anode in Working Lithium-Sulfur Batteries

Cheng

Huang

Zhang

2017

J. Electrochem. Soc.

243

170

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Due to the high theoretical energy density of 2600 Wh kg −1 , lithium-sulfur batteries are strongly regarded as the promising nextgeneration energy storage devices. However, the practical applications of lithium-sulfur batteries are challenged by several obstacles, including the low sulfur utilization and poor lifespan, which are partly attributed to the shuttle of lithium polysulfides and lithium dendrite growth in working lithium-sulfur batteries. Suppressing lithium dendrite growth is a necessary step not only for a safe and efficient Li metal anode, but also for a high capacity cell with a high Coulombic efficiency. Herein we review the lithium metal anode protection in a polysulfide-rich environment, relative to most reviews on lithium metal anode without considering the effect of lithium polysulfides in lithium metal batteries. Firstly, the importance and dilemma of Li metal anode issues in lithium-sulfur batteries are underscored, aiming to arouse the attentions to Li metal anode protection. Specific attentions are paid to the surface chemistry of Li metal anode in a polysulfide-rich lithium-sulfur battery. Next, the proposed strategies to stabilize solid electrolyte interface and protect Li metal anode are included. Finally, a general conclusion and a perspective on the current limitations, as well as recommended future research directions of Li metal anode in lithium-sulfur batteries are presented. The ever-increasing requirement for efficient and economic energy storage technologies has triggered the continued research into advanced battery systems.1 Lithium ion batteries, based on the lithium intercalation chemistry, have dominated the battery market since their commercial application in the 1990s.2 However, conventional lithium ion batteries are very expensive and their energy densities (theoretically, 350 − 500 Wh kg −1 , practically, 100 − 250 Wh kg −1 ) seem insufficient for long-range electrical vehicles and high-end portable electronics. These emerging demands have energized the evolution of other alternative rechargeable batteries with higher energy density and longer lifespan.3 Lithium−sulfur (Li−S) battery, a 'beyond Li-ion' technology, has drawn extensive attentions due to its high specific capacity (1675 mAh g −1 ) and energy density (2600 Wh kg −1 ). 4-6The greater energy storage ability of Li−S batteries is realized through the phase-transformation electrochemistry based on elemental sulfur cathode and metallic lithium anode [S 8 + 16Li ↔ 8Li 2 S], 7,8 which is fundamentally different from current transition metal-based cathodes and graphite-based anodes in Li-ion batteries.The conversion chemistry in a Li−S cell offers not only significant advantages as mentioned above, but also some critical challenges, such as the low conductivity of sulfur and lithium sulfide, the huge volumetric change from sulfur (71 mol L −1 ) to lithium sulfide (36 mol L −1 ), and the shuttle of long-chain polysulfide intermediates during discharge/charge cycling.9-12 Therefore, a composite cathode with sulfur in ...

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“…2c). The performance is among the best reported for Li|Cu cells working under equivalent conditions with other protecting strategies like 3D porous Cu, 49 interconnected hollow carbon nanospheres, 37 polymer films, 50 polymer fibers 51,52 and a Cu nanowire membrane, 53 most of which maintain high CE for 100–150 cycles at 1 mA cm –2 (Table S1†). At higher current densities of 1.5 and 3 mA cm –2 , the cell with the NH 2 -MIL-125(Ti)-coated separator can be cycled at high efficiency for ∼150 and 60 cycles, respectively (Fig.…”

Section: Resultsmentioning

confidence: 93%