Anionic oxygen vacancies in Nb2O5-/carbon hybrid host endow rapid catalytic behaviors for high-performance high areal loading lithium sulfur pouch cell

Cheng, Shuang; Wang, Jian; Duan, Shaorong; Zhang, Jing; Wang, Qi; Zhang, Yue; Li, Linge; Liu, Haitao; Xiao, Qingbo; Lin, Hongzhen

doi:10.1016/j.cej.2020.128172

Cited by 42 publications

(24 citation statements)

References 59 publications

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“…What is worse, there is a lack of active sites for modulating the lithium ion kinetics to guide initial lithium nucleation in cycling, which determines the later morphology of plated lithium. Recently, single atomic catalysts (SACs) on the nanocarbon matrix show the highest activity and largest surface area in a solo site, serving as efficient adsorbing and catalyzing sites. − Our previous studies had proven that pristine defect-containing catalyst and single atomic catalysts are capable of providing catalytic sites to accelerate lithium ion kinetics in cathodes. ,− Possibly, SACs on nanocarbon may be useful to render abundant lithophilic binding sites and modulate the lithium kinetics behaviors, so as to guide the uniform deposition of lithium and avoid the growth of dendrites. However, there is a lack of simple methods to synthesize and stabilize SACs and it is much more challenging to locate and stabilize the large numbers of the highest active SACs in material synthesis.…”

Section: Introductionsupporting

confidence: 53%

Long-Life Dendrite-Free Lithium Metal Electrode Achieved by Constructing a Single Metal Atom Anchored in a Diffusion Modulator Layer

et al. 2021

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Lithium metal electrodes have shown great promise for high capacity and the lowest potential. However, wide application is restricted by uncontrollable plating/stripping lithium behaviors, an uneven solid electrolyte interphase, and a lithium dendrite. Herein, the highly active single metal atom anchored in vacant catalyst is synthesized on the hierarchical porous nanocarbon (SACo/ADFS@HPSC). Acting as an artificial protective modulation layer on the lithium surface, the numerous atomic sites show the superiority in modulating lithium ion behaviors and smoothing the lithium surface without dendrite growth. As a consequence, the SACo/ADFS@HPSC-modified Li electrode lowers nucleation barrier (15 mV), extends the smooth plating lifespan (1600 h), and improves Coulombic efficiency, significantly accelerating the horizonal deposition of plated lithium. Coupled with a sulfur cathode, the fabricated pouch cell with 5.4 mg cm −2 delivers a high capacity of 3.78 mA h cm −2 corresponding to 1505 Wh kg −1 , showing the promising practical application.

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Section: Introductionsupporting

confidence: 53%

Long-Life Dendrite-Free Lithium Metal Electrode Achieved by Constructing a Single Metal Atom Anchored in a Diffusion Modulator Layer

et al. 2021

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“…Customized to the characteristics of host materials, nanosized sulfur could be synthesized by the reaction between certain sulfur-containing salts (e.g., Na 2 S, Na 2 S 2 O 3 , Na 2 S x ) and acids in aqueous solution. [44][45][46] Followed by the meltingdiffusion process, homogeneous carbon/sulfur cathode materials could be obtained. 29 Back to 2013, Cui and coworkers first synthesized uniform and monodisperse coreshell/yolk-shell S@TiO 2 , where the sulfur core was fabricated by the reaction of Na 2 S 2 O 3 and hydrochloric acid.…”

Section: Chemical Deposition Methodsmentioning

confidence: 99%

“…Similar to doping, the presence of vacancy can also adjust the geometrical and chemical configuration of the compounds. 46,[192][193][194] Note that doping and vacancy were commensal in some cases, 71,195 which are not involved in the following discussion. Ba 0.5 Sr 0.5 Co 0.8 Fe 0.2 O 3-δ perovskite nanoparticles (PrNPs) were proposed to immobilize LiPSs and guide Li 2 S deposition in Li-S batteries.…”

Section: Vacancy Engineeringmentioning

confidence: 99%

“…Besides naturally generated vacancies, artificial vacancies are obtained by different treatments. 182,196,197 For example, various vacancies, such as oxygen, 46 sulfur, 198 selenide, 193 nitride, 104 and metal cation, 194 were introduced into host materials of Li-S batteries. Notably, in parallel with prefabricated defective host materials, in-situ generated vacancies in pristine host materials were attained by LiPSs etching during the cycling (Figure 7B).…”

Section: Vacancy Engineeringmentioning

confidence: 99%

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Designing principles of advanced sulfur cathodes toward practical lithium‐sulfur batteries

Zhang

2022

SusMat

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As one of the most promising candidates for next-generation energy storage systems, lithium-sulfur (Li-S) batteries have gained wide attention owing to their ultrahigh theoretical energy density and low cost. Nevertheless, their road to commercial application is still full of thorns due to the inherent sluggish redox kinetics and severe polysulfides shuttle. Incorporating sulfur cathodes with adsorbents/catalysts has been proposed to be an effective strategy to address the foregoing challenges, whereas the complexity of sulfur cathodes resulting from the intricate design parameters greatly influences the corresponding energy density, which has been frequently ignored. In this review, the recent progress in design strategies of advanced sulfur cathodes is summarized and the significance of compatible regulation among sulfur active materials, tailored hosts, and elaborate cathode configuration is clarified, aiming to bridge the gap between fundamental research and practical application of Li-S batteries. The representative strategies classified by sulfur encapsulation, host architecture, and cathode configuration are first highlighted to illustrate their synergetic contribution to the electrochemical performance improvement. Feasible integration principles are also proposed to guide the practical design of advanced sulfur cathodes. Finally, prospects and future directions are provided to realize high energy density and long-life Li-S batteries.

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“…Recently, to further increase the catalytic ability, nanotechnology of forming defect engineering and constructing single atomic catalysts has also been proposed to adjust the local electronic density to polarize hybrid matrices, which is capable of generating more active sites to improve the catalytic ability. [ 64–72 ] Nevertheless, to the best of our knowledge, very few reviews have focused on the highly active defect‐rich catalysts (DRCs) and single atomic catalysts (SACs). In this review, as shown in Figure 1c, from the atom surrounding, on the premise of excellent adsorption, the different kinds of active catalysts are divided into pristine metal‐based nanoparticles catalyst, highly active DRCs and SACs to anchor/converse sulfur species and catalyze the lithium‐ion kinetics to develop smooth dendrite‐free Li anode.…”

Section: Introductionmentioning

confidence: 99%

Electrochemical Kinetic Modulators in Lithium–Sulfur Batteries: From Defect‐Rich Catalysts to Single Atomic Catalysts

Zhang

Chen

Lin

et al. 2022

Energy & Environ Materials

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Lithium-sulfur batteries exhibit unparalleled merits in theoretical energy density (2600 W h kg −1 ) among next-generation storage systems. However, the sluggish electrochemical kinetics of sulfur reduction reactions, sulfide oxidation reactions in the sulfur cathode, and the lithium dendrite growth resulted from uncontrollable lithium behaviors in lithium anode have inhibited high-rate conversions and uniform deposition to achieve high performances. Thanks to the "adsorption-catalysis" synergetic effects, the reaction kinetics of sulfur reduction reactions/sulfide oxidation reactions composed of the delithiation of Li 2 S and the interconversions of sulfur species are propelled by lowering the delithiation/diffusion energy barriers, inhibiting polysulfide shuttling. Meanwhile, the anodic plating kinetic behaviors modulated by the catalysts tend to uniformize without dendrite growth. In this review, the various active catalysts in modulating lithium behaviors are summarized, especially for the defect-rich catalysts and single atomic catalysts. The working mechanisms of these highly active catalysts revealed from theoretical simulation to in situ/operando characterizations are also highlighted. Furthermore, the opportunities of future higher performance enhancement to realize practical applications of lithium-sulfur batteries are prospected, shedding light on the future practical development.

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Anionic oxygen vacancies in Nb2O5-/carbon hybrid host endow rapid catalytic behaviors for high-performance high areal loading lithium sulfur pouch cell

Cited by 42 publications

References 59 publications

Long-Life Dendrite-Free Lithium Metal Electrode Achieved by Constructing a Single Metal Atom Anchored in a Diffusion Modulator Layer

Long-Life Dendrite-Free Lithium Metal Electrode Achieved by Constructing a Single Metal Atom Anchored in a Diffusion Modulator Layer

Designing principles of advanced sulfur cathodes toward practical lithium‐sulfur batteries

Electrochemical Kinetic Modulators in Lithium–Sulfur Batteries: From Defect‐Rich Catalysts to Single Atomic Catalysts

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