Lithiophilic Sites in Doped Graphene Guide Uniform Lithium Nucleation for Dendrite‐Free Lithium Metal Anodes

Zhang, Rui; Chen, Xiaoru; Chen, Xiang; Cheng, Xin‐Bing; Zhang, Xueqiang; Yan, Chong; Zhang, Qiang

doi:10.1002/anie.201702099

Cited by 1,059 publications

(827 citation statements)

References 42 publications

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“…2 mm) are grown vertically on the electrode when using normal electrolyte (Figure 5d), which is larger than those cycled at 1mAcm À2 and more likely to cause short circuit. [30] Therefore,t here is an egative correlation between zinc dendrite sizes and current densities.At the low current density,z inc tends to be grown largely and dispersedly owing to the less activate sites on the surface which can achieve sufficient energy for zinc nucleation. Figure 5g clearly demonstrates the change trends of cycle life with current densities.I tis obvious that PA Ma dditive can significantly promote the cycle stability in aw ide range of current densities.F urthermore,t he average voltage hysteresis at different current densities and its difference between the two kinds of the electrolyte is summarized in the Supporting Information, Table S1.…”

Section: Angewandte Chemiementioning

confidence: 99%

The Three‐Dimensional Dendrite‐Free Zinc Anode on a Copper Mesh with a Zinc‐Oriented Polyacrylamide Electrolyte Additive

et al. 2019

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Rechargeable aqueous zinc-ion batteries have been considered as ap romising candidate for next-generation batteries.H owever,t he formation of zinc dendrites are the most severe problems limiting their practical applications.T od evelop stable zinc metal anodes,asynergistic method is presented that combines the Cu-Zn solid solution interface on ac opper mesh skeleton with good zinc affinity and ap olyacrylamide electrolyte additive to modify the zinc anode,whichcan greatly reduce the overpotential of the zinc nucleation and increase the stability of zinc deposition. The as-prepared zinc anodes show adendrite-free plating/stripping behavior over awide range of current densities.T he symmetric cell using this dendrite-free anode can be cycled for more than 280 hw ith av ery lowv oltage hysteresis (93.1 mV) at ad ischarged epth of 80 %. The high capacity retention and low polarization are also realized in Zn/MnO 2 full cells.Supportinginformation and the ORCID identification number(s) for the author(s) of this article can be found under: https://doi.

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Section: Angewandte Chemiementioning

confidence: 99%

The Three‐Dimensional Dendrite‐Free Zinc Anode on a Copper Mesh with a Zinc‐Oriented Polyacrylamide Electrolyte Additive

et al. 2019

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“…Coinciding well with Cui's results, there is no nucleation overpotential for Li deposition on the Ag/CNF substrate and Li prominently nucleates and grows on the Ag nanoseeds, resulting in a uniform Li film along the CNFs during Li platting. Afterward, the materials options were further broadened by Zhang et al In addition to metals, they found that different Li nucleation behavior can also be observed from other non-metallic materials such as carbon [343]. The results showed that negligible nucleation overpotential for Li deposition was observed on nitrogen-doped graphene (NG), while obvious nucleation overpotential was observed for its counterparts (graphene and Cu foil).…”

Section: Selective Depositionmentioning

confidence: 99%

Structural Design of Lithium–Sulfur Batteries: From Fundamental Research to Practical Application

Yang

Adair

et al. 2018

Electrochem. Energ. Rev.

343

206

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Lithium-sulfur (Li-S) batteries have been considered as one of the most promising energy storage devices that have the potential to deliver energy densities that supersede that of state-of-the-art lithium ion batteries. Due to their high theoretical energy density and cost-effectiveness, Li-S batteries have received great attention and have made great progress in the last few years. However, the insurmountable gap between fundamental research and practical application is still a major stumbling block that has hindered the commercialization of Li-S batteries. This review provides insight from an engineering point of view to discuss the reasonable structural design and parameters for the application of Li-S batteries. Firstly, a systematic analysis of various parameters (sulfur loading, electrolyte/sulfur (E/S) ratio, discharge capacity, discharge voltage, Li excess percentage, sulfur content, etc.) that influence the gravimetric energy density, volumetric energy density and cost is investigated. Through comparing and analyzing the statistical information collected from recent Li-S publications to find the shortcomings of Li-S technology, we supply potential strategies aimed at addressing the major issues that are still needed to be overcome. Finally, potential future directions and prospects in the engineering of Li-S batteries are discussed.

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“…[21] Thep orous and freestanding O f -CNT with specific surface area of 174.9 m 2 g À1 was latter used as a3 Dc onducting scaffold to accommodate Na metal without additional current collectors (Supporting Information, Figures S1-S3). [22,23] TheO1s spectra of asprepared O f -CNT (Supporting Information, Figure S7) exhibited three peaks assigned to ether oxygen (534.8 eV), carbonyl oxygen (533.2 eV), and oxhydryl oxygen (531.2 eV). A2 4.4 atom %Ocontent was generally utilized for O f -CNT in this work if not otherwise specified (Supporting Information, Figures S5 and S6).…”

Section: Angewandte Chemiementioning

confidence: 99%

A Sodiophilic Interphase‐Mediated, Dendrite‐Free Anode with Ultrahigh Specific Capacity for Sodium‐Metal Batteries

et al. 2019

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Despite efforts to stabilizesodium metal anodes and prevent dendrite formation, achieving long cycle life with high areal capacities remains difficult owing to ac ombination of complex failure modes that involve retardant uneven sodium nucleation and subsequent dendrite formation. Now,as odiophilic interphase based on oxygen-functionalized carbon nanotube networks is presented, which concurrently facilitates ahomogeneous sodium nucleation and adendrite-free,lateral growth behavior upon recurring sodium plating/stripping processes.T his sodiophilic interphase renders sodium anodes with an ultrahigh capacity of 1078 mAh g À1 (areal capacity of 10 mAh cm À2 ), approaching the theoretical capacity of 1166 mAh g À1 of pure sodium, as well as al ong cycle life up to 3000 cycles.I mplementation of this anode allows for the construction of as odium-air battery with largely enhanced cycling performance owing to the oxygen functionalizationmediated, dendrite-free sodium morphology.Metallic sodium (Na) has been considered as one of the most attractive anode materials for rechargeable high-energy batteries owing to its high theoretical capacity (1166 mAh g À1 ), low redox potential (À2.714 Vv s. standard hydrogen electrode), and much greater abundance over metallic lithium (Li). [1][2][3] Unfortunately,t he formation of Na dendrites caused by inhomogeneous deposition will decrease the utilization of reactive Na with poor cyclic stability,a nd more importantly,r esult in at hreat of internal short circuit towards thermal runaway and fire hazards (Figure 1a). Therefore,Nadendrites and their related issues have severely hindered the practical applications of sodium-metal batteries (SMBs), [4,5] fore xample,s odium-air batteries [2,6] and roomtemperature sodium-sulfur batteries. [7] To solve these problems,s ignificant progress has been achieved recently by applying various strategies,including an artificial solid-electrolyte interphase (SEI), [8,9] electrolyte additives, [10,11] solid-state electrolytes, [12,13] and nanostructured Na anodes. [14,15] Generally,t hese strategies mainly concentrate on the already formed Na plating morphology,t hat is, Na dendrites,y et few involve the initial Na deposition behavior, including the nucleation. However,t he final Na morphology significantly depends on the initial nucleating behavior, especially upon the realistic application requiring high areal capacity (for example,10mAh cm À2

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Lithiophilic Sites in Doped Graphene Guide Uniform Lithium Nucleation for Dendrite‐Free Lithium Metal Anodes

Cited by 1,059 publications

References 42 publications

The Three‐Dimensional Dendrite‐Free Zinc Anode on a Copper Mesh with a Zinc‐Oriented Polyacrylamide Electrolyte Additive

The Three‐Dimensional Dendrite‐Free Zinc Anode on a Copper Mesh with a Zinc‐Oriented Polyacrylamide Electrolyte Additive

Structural Design of Lithium–Sulfur Batteries: From Fundamental Research to Practical Application

A Sodiophilic Interphase‐Mediated, Dendrite‐Free Anode with Ultrahigh Specific Capacity for Sodium‐Metal Batteries

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