Reshaping Lithium Plating/Stripping Behavior via Bifunctional Polymer Electrolyte for Room-Temperature Solid Li Metal Batteries

Zeng, Xian‐Xiang; Yin, Ya‐Xia; Li, Nianwu; Du, Wencheng; Guo, Yu‐Guo; Li, Wan

doi:10.1021/jacs.6b10088

Cited by 423 publications

(210 citation statements)

References 54 publications

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“…Besides, a bifunctional solid polymer electrolyte with an interpenetrating network of poly(ether‐acrylate) (ipn‐PEA) has been proposed by Guo's group 101. Such ipn‐PEA electrolyte suppressed dendrite growth and enhanced kinetics for high‐rate operation of the room‐temperature solid lithium metal batteries.…”

Section: Micro/nanostructured Solid Electrolyte Interphasementioning

confidence: 99%

Advanced Micro/Nanostructures for Lithium Metal Anodes

et al. 2017

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Owning to their very high theoretical capacity, lithium metal anodes are expected to fuel the extensive practical applications in portable electronics and electric vehicles. However, unstable solid electrolyte interphase and lithium dendrite growth during lithium plating/stripping induce poor safety, low Coulombic efficiency, and short span life of lithium metal batteries. Lately, varies of micro/nanostructured lithium metal anodes are proposed to address these issues in lithium metal batteries. With the unique surface, pore, and connecting structures of different nanomaterials, lithium plating/stripping processes have been regulated. Thus the electrochemical properties and lithium morphologies have been significantly improved. These micro/nanostructured lithium metal anodes shed new light on the future applications for lithium metal batteries.

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Section: Micro/nanostructured Solid Electrolyte Interphasementioning

confidence: 99%

Advanced Micro/Nanostructures for Lithium Metal Anodes

et al. 2017

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“…To handle this trouble, the current researches of solidstate electrolyte focus on two aspects: (1) Continuously enhancing the ionic conductivity of solid-state electrolyte by developing novel solid-state electrolyte, such as Li 10 GeP 2 S 12 , 126 ipn-PEA electrolyte, 127 three-dimensional (3D) ceramic/polymer network, 128 in-situ plasticized polymer electrolyte, 129 and composite polymer electrolyte with well-aligned ceramic nanowire (Figure 13a), 130 etc. (2) Adequately reducing the interfacial impedance between the solid-state electrolyte and Li anode by the surface coating layer (Figure 13b) It should be noticed that the coating layer must be thin and ionically conductive, which renders a high energy and power density at a cell level.…”

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.

251

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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“…However, the free radical polymerization reaction of unsaturated carbon–carbon double bonds always requires addition of a thermal and UV‐light initiator. This radical polymerization between confined electrodes is not reliable due to lack of reproducibility caused by the interfacial side reactions 15, 16. Therefore, initiator‐free and reliable in situ synthetic chemistry strategy is highly desirable.…”

Section: Introductionmentioning

confidence: 99%

High Performance Solid Polymer Electrolytes for Rechargeable Batteries: A Self‐Catalyzed Strategy toward Facile Synthesis

et al. 2017

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It is urgent to seek high performance solid polymer electrolytes (SPEs) via a facile chemistry and simple process. The lithium salts are composed of complex anions that are stabilized by a Lewis acid agent. This Lewis acid can initiate the ring opening polymerization. Herein, a self‐catalyzed strategy toward facile synthesis of crosslinked poly(ethylene glycol) diglycidyl ether‐based solid polymer electrolyte (C‐PEGDE) is presented. It is manifested that the poly(ethylene glycol) diglycidyl ether‐based solid polymer electrolyte possesses a superior electrochemical stability window up to 4.5 V versus Li/Li+ and considerable ionic conductivity of 8.9 × 10−5 S cm−1 at ambient temperature. Moreover, the LiFePO4/C‐PEGDE/Li batteries deliver stable charge/discharge profiles and considerable rate capability. It is demonstrated that this self‐catalyzed strategy can be a very effective approach for high performance solid polymer electrolytes.

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Reshaping Lithium Plating/Stripping Behavior via Bifunctional Polymer Electrolyte for Room-Temperature Solid Li Metal Batteries

Cited by 423 publications

References 54 publications

Advanced Micro/Nanostructures for Lithium Metal Anodes

Advanced Micro/Nanostructures for Lithium Metal Anodes

Review—Li Metal Anode in Working Lithium-Sulfur Batteries

High Performance Solid Polymer Electrolytes for Rechargeable Batteries: A Self‐Catalyzed Strategy toward Facile Synthesis

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