Spatial confinement of vertical arrays of lithiophilic SnS2 nanosheets enables conformal Li nucleation/growth towards dendrite-free Li metal anode

Xie, Dan; Li, Huanhuan; Diao, Wan‐Yue; Jiang, Ru; Tao, Fang‐Yu; Sun, Haizhu; Wu, Xiaohong; Zhang, Jingping

doi:10.1016/j.ensm.2021.01.034

Cited by 78 publications

(58 citation statements)

References 40 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…As shown in Figure S21 (Supporting Information), the charge‐transfer resistance ( R ct ) of Zn@3D‐ZGC symmetric cell was much lower than that of symmetric cells based on 3D‐GC and Zn foil anode due to the fast Zn deposition/dissolution kinetics and stable solid electrolyte interface with low ion diffusion barrier of the 3D‐ZGC host. [ 28 ] These excellent electrochemical properties of the Zn@3D‐ZGC composite anodes suggest that the unique 3D conductive network, with evenly distributed zincophilic ZnO/C NPs and mechanical robustness, can effectively eliminate the “dead” Zn or dendrite formation. More specifically, the interconnected electronically conductive 3D network with a high surface area offers a smooth pathway for electrons and effectively uniformizes the electric field distribution.…”

Section: Resultsmentioning

confidence: 99%

“…[ 21–25 ] In addition, the heterogeneous Zn nucleation barrier can be reduced by the zincophilic framework and the uniform Zn growth morphology can be controlled by the initial homogeneous Zn nuclear seed layer. [ 26–28 ] For a desirable 3D Zn metal composite anode that can achieve excellent long‐term cycling performance at ultrahigh current density, optimized material design, and advanced nanotechnology should be combined to simultaneously meet the following basic requirements: 1) evenly distributed zincophilic nucleation sites and low nucleation overpotential with metallic Zn for guiding and regulating uniform Zn nucleation and deposition within the whole framework; [ 27,28 ] 2) intrinsically high electrical conductivity concomitant with a continuous conductive network, ensuring rapid electron charge transfer and uniform local electric field distribution for homogeneous Zn deposition and inhibiting formation of dendrites; [ 21 ] 3) large specific surface area and high porosity with short ion diffusion length ensuring fast ion transmission and uniform concentration distribution; [ 18 ] 4) high hydrogen evolution overpotential for suppressing the undesired side reactions and promoting high coulomb efficiency of plating/stripping; [ 29,30 ] 5) outstanding mechanical strength and toughness for relieving huge internal stress fluctuation and substantially avoiding electrode disintegration or collapse during rapid and repeated Zn plating/stripping processes. [ 22,23 ]…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

A MOF‐Derivative Decorated Hierarchical Porous Host Enabling Ultrahigh Rates and Superior Long‐Term Cycling of Dendrite‐Free Zn Metal Anodes

et al. 2022

View full text Add to dashboard Cite

cell design have presented numerous safety hazards and economic challenges, [3][4][5] which make LIBs less suitable for largescale applications. Compared with organic LIBs, aqueous rechargeable Zn-ion batteries (ZIBs) equipped with nonflammable and highly ion conductive aqueous electrolytes are highly desirable. They benefit from a high theoretical capacity (a gravimetric capacity of 820 mAh g −1 and a volumetric capacity of 5855 mAh cm −3 ) and a low plating/stripping potential (−0.76 V vs standard hydrogen electrode), as well as a high natural abundance of metallic Zn. [6][7][8] Unfortunately, the uncontrolled formation of dendrites, undesired side reactions (e.g., corrosion, hydrogen evolution, and by-product formation), and huge volume variation during repeated Zn deposition-dissolution processes of the host-less metallic Zn anode not only limit the efficiency of plating and stripping, but also result in a remarkably short lifespan, or even internal short-circuiting. [9][10][11] In order to address the issues mentioned above, several strategies have been proposed to regulate the Zn plating/stripping behaviors for stable Zn metal batteries, including surface modification, [12][13][14] electrolyte optimization, [15][16][17] and electrode structural design. [18][19][20] For instance, an ultrathin MXene layer and glucose have been used as an artificial layer and a multifunctional electrolyte additive to stabilize Zn metal anodes, Aqueous Zn metal batteries have attracted much attention due to their high intrinsic capacity, high safety, and low cost. Nevertheless, uncontrollable dendrite growth and adverse side reactions of Zn anodes seriously hinder their further application. Herein, a three-dimensional (3D) porous graphene-carbon nanotubes scaffold decorated with metal-organic framework derived ZnO/C nanoparticles (3D-ZGC) is fabricated as the host for dendrite-free Zn-metal composite anodes. The zincophilic ZnO/C nanoparticles act as preferred deposition sites with low nucleation barriers to induce homogeneous Zn deposition. The mechanically robust 3D scaffold with high conductivity not only suppresses the formation of dendritic Zn by reducing the local current density and homogenizing Zn 2+ ion flux, but also inhibits volume changes during the long-term plating/stripping process. As a result, the 3D-ZGC composite anodes afford unprecedented Zn plating-stripping stability at an ultrahigh current density of 20 mA cm -2 for 1500 cycles with low overpotential (<65 mV) when used in a symmetric cell. When coupled with MnO 2 cathodes, the assembled Zn@3D-ZGC//MnO 2 full batteries deliver an enhanced cycling stability for up to 6000 cycles at 2000 mA g -1 , demonstrating the potential of the 3D-ZGC composite anode for advanced Zn metal batteries.

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A MOF‐Derivative Decorated Hierarchical Porous Host Enabling Ultrahigh Rates and Superior Long‐Term Cycling of Dendrite‐Free Zn Metal Anodes

et al. 2022

View full text Add to dashboard Cite

show abstract

“…Derived from its high reactivity, the reduction reaction of lithium occurs when it comes into contact with other metal salt solutions, thereby forming SEI films containing lithium-based alloys. For example, Li–M (M = aluminum (Al), 35–37 zinc (Zn), 26 tin (Sn), 38–40 antimony (Sb), 41,42 and indium (In)) 43 alloy layers with good mechanical properties and high electrical conductivity are easily formed to protect lithium anodes. Specifically, the Li 3 InCl 6 additive can form a lithiophilic Li–In alloy layer on Li metal.…”

Section: Interfacial Regulation Mechanism Of Lrrsmentioning

confidence: 99%

“…39 Likewise, lithium metal with high reactivity could react with SnS 2 nanosheets to generate lithiophilic Li 13 Sn 5 , reducing the Li nucleation barrier. 40…”

Section: Lrrs For Liquid Lithium Metal Batteriesmentioning

confidence: 99%

Lithium reduction reaction for interfacial regulation of lithium metal anode

Zhang

Zeng

et al. 2022

Chem. Commun.

View full text Add to dashboard Cite

show abstract

“…To overcome these drawbacks, tremendous efforts have been applied to stabilize the LMAs, such as introducing lithiophilic host, constructing artificial solid electrolyte interphase (SEI) layers, and employing solid‐state electrolytes, and so on. [ 12–20 ] Despite constructing artificial SEI and solid‐state electrolytes can effectively suppress the Li dendrite growth to some extent, the dramatical electrode dimension change caused by “hostless” Li plating/stripping still exists, which can cause the rupture of the artificial SEI and instability of the solid‐electrolyte interface. [ 21–23 ] Therefore, Li hosts with numerous lithiophilic sites are required and show the capability to guide uniform Li plating/stripping.…”

Section: Introductionmentioning

confidence: 99%

Single‐Atom Reversible Lithiophilic Sites toward Stable Lithium Anodes

Yang

Dang

Zhai

et al. 2022

Advanced Energy Materials

View full text Add to dashboard Cite

Lithiophilic sites with high binding energy to Li have shown the capability to guide uniform Li deposition, however, the irreversible reaction between Li and lithiophilic sites causes a loss of lithiophilicity. Herein, the concept of using reversible lithiophilic sites, such as single‐atoms (SAs) doped graphene, as a host, is systematically inspected in the context of Li metal battery (LMB) performance. Here, it is proposed that the binding energy to Li atoms should be within a certain threshold range, i.e., strong enough to inhibit Li dendrite growth and weak enough to avoid host structure collapse. Six kinds of SAs are utilized; doped 3D graphene, nitrogen‐doped 3D graphene, and pure 3D graphene, whose performance in LMBs are compared with each other. It is discovered that the SA‐Mn doped 3D graphene (SAMn@NG) has the most reversible lithiophilic site, in which adsorption strength with Li is suitable to guide uniform deposition and keep the structure stable. During Li plating/stripping, the changes of the atomic structures in SAMn@NG, such as change of bond length and bond angle around Mn atoms are much smaller than those on SAZr@NG, although its binding energy is higher, enabling a much‐improved battery performance in SAMn@NG. This work provides a new insight to design lithiophilic sites in LMBs.

show abstract

Spatial confinement of vertical arrays of lithiophilic SnS2 nanosheets enables conformal Li nucleation/growth towards dendrite-free Li metal anode

Cited by 78 publications

References 40 publications

A MOF‐Derivative Decorated Hierarchical Porous Host Enabling Ultrahigh Rates and Superior Long‐Term Cycling of Dendrite‐Free Zn Metal Anodes

A MOF‐Derivative Decorated Hierarchical Porous Host Enabling Ultrahigh Rates and Superior Long‐Term Cycling of Dendrite‐Free Zn Metal Anodes

Lithium reduction reaction for interfacial regulation of lithium metal anode

Single‐Atom Reversible Lithiophilic Sites toward Stable Lithium Anodes

Contact Info

Product

Resources

About