Conductive Nanostructured Scaffolds Render Low Local Current Density to Inhibit Lithium Dendrite Growth

Zhang, Rui; Cheng, Xin‐Bing; Zhao, Chen‐Zi; Peng, Hong‐Jie; Shi, Jiale; Huang, Jia‐Qi; Wang, Jinfu; Wei, Fei; Zhang, Qiang

doi:10.1002/adma.201504117

Cited by 608 publications

(394 citation statements)

References 51 publications

(39 reference statements)

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“…Dendritic Li growth induced by the large currents is mainly responsible for the cell failure. 56 Other than the usually prevailing theory of the failure caused by dendrite-induced short-circuit, the practical cell is more possible to be failed by the large polarization caused by powdery and dead Li in the porous layer. In a Li metal battery with the highly stable cathode (such as lithium iron phosphate and lithium titanate), the large capacity decay of Li metal battery is primarily due to the considerable polarization resulting from the porous and highly resistant layer in the Li metal anode.…”

Section: The Significance Of LI Metal Anode In Working Li−s Batteriesmentioning

confidence: 99%

Review—Li Metal Anode in Working Lithium-Sulfur Batteries

Cheng

Huang

Zhang

2017

J. Electrochem. Soc.

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237

169

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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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Section: The Significance Of LI Metal Anode In Working Li−s Batteriesmentioning

confidence: 99%

Review—Li Metal Anode in Working Lithium-Sulfur Batteries

Cheng

Huang

Zhang

2017

J. Electrochem. Soc.

Self Cite

237

169

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“…Various strategies have been designed to prevent dendrite penetration and reduce dendrite structure, including the use of nanostructured anodes,5 modified separators,6 and physical protective layers 7. However, these strategies cannot change the breakage/repair mechanism of SEI layer, and significantly improve the Coulombic efficiency of Li plating/stripping.…”

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confidence: 99%

Passivation of Lithium Metal Anode via Hybrid Ionic Liquid Electrolyte toward Stable Li Plating/Stripping

et al. 2016

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Hybrid electrolyte of ionic liquid and ethers is used to passivate the surface of Li metal surface via modification of the as‐formed solid electrolyte interphase with N‐propyl‐N‐methylpyrrolidinium bis(trifluoromethanesulfonyl)amide (Py13TFSI), thereby reducing the side reactions between the Li metal and electrolyte, leading to remarkably suppressed Li dendrite growth and mitigating Li metal corrosion.

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“…In another study, Zhang et al [208] not only utilized unstacked graphene frameworks as the hosts for the deposition of lithium metal, but also used a LiTFSI-LiFSI dualsalt electrolyte to form a stable SEI layer. (Schematic diagrams are shown in Fig.…”

Section: Carbon-based Lithium Hostsmentioning

confidence: 99%

“…Therefore, to improve lithium metal anode performances, the interface between lithium and electrolytes must be stabilized and the lithium stripping/plating process must be optimized to suppress the formation of lithium dendrites and promote the uniform distribution of lithium during cycling. Currently, several promising protective methods to stabilize lithium metal anodes have been explored, such as the stabilization of interfaces [39], the construction of lithium hosts [208] and the fabrication of nucleation sites [209]. For example, stable SEI layers must satisfy the requirement of mechanical strength to restrain the growth of lithium dendrites, taking advantage of the mechanical properties of the material.…”

Section: Carbon-based Materials For Lithium Metal Anodesmentioning

confidence: 99%

Multifunctionality of Carbon-based Frameworks in Lithium Sulfur Batteries

Tang

Hou

2018

Electrochem. Energ. Rev.

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Compared with conventional lithium ion batteries (LIBs), lithium sulfur (Li-S) batteries possess advantages such as higher theoretical energy densities and better cost efficiencies, making them promising next-generation energy storage systems. However, the commercialization of Li-S batteries is impeded by several drawbacks, including low cycling stabilities, limited sulfur utilizations, existing shuttle effects of polysulfide intermediates, serious safety concerns, as well as inferior cycling performances of lithium metal anodes. To address these issues, researchers have achieved rapid developments for sulfur cathodes and increased their attention to lithium metal anodes to facilitate the widespread application of Li-S batteries. And among the substrate materials for electrodes in Li-S batteries being developed, carbon-based materials have been especially promising because of their multifunctionality, demonstrating great potential for application in advanced energy storage and conversion systems. In this review, recent advancements of carbon-based frameworks applied to Li-S batteries will be summarized and diverse utilization methods of these carbon-based materials for both sulfur cathodes and lithium metal anodes will be provided. Future research directions and the prospects of Li-S batteries with high performance and practicability will also be discussed. Keywords

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Conductive Nanostructured Scaffolds Render Low Local Current Density to Inhibit Lithium Dendrite Growth

Cited by 608 publications

References 51 publications

Review—Li Metal Anode in Working Lithium-Sulfur Batteries

Review—Li Metal Anode in Working Lithium-Sulfur Batteries

Passivation of Lithium Metal Anode via Hybrid Ionic Liquid Electrolyte toward Stable Li Plating/Stripping

Multifunctionality of Carbon-based Frameworks in Lithium Sulfur Batteries

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