A copper-clad lithiophilic current collector for dendrite-free lithium metal anodes

Chen, Ke; Pathak, Rajesh; Gurung, Ashim; Reza, Khan Mamun; Ghimire, Nabin; Pokharel, Jyotshna; Baniya, Abiral; He, Wei; Wu, James J.; Qiao, Qiquan; Zhou, Yue

doi:10.1039/c9ta11237e

Cited by 55 publications

(43 citation statements)

References 55 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In addition, the high-resolution zoomed in SEM image of the surface cracks revealed abundant Li dendrites and unhinged “dead” Li (Figure S24b), likely because of the centralized Li + flux in these cracks as a result of the SEI break-down. Thus, the continuous formation of unstable SEI and dead Li on the bare Li electrode could be the major cause of capacity fading. , In contrast, only some small cracks were observed on the surface of Li@NF, showing a generally smooth and flat morphology without evident dendrites (Figure S24c,d). Therefore, as a result of the improved structural integrity and suppressed dendrite formation, Li@NF demonstrated better cycling stability in the full cells.…”

Section: Resultsmentioning

confidence: 99%

“…Thus, the continuous formation of unstable SEI and dead Li on the bare Li electrode could be the major cause of capacity fading. 49,50 In contrast, only some small cracks were observed on the surface of Li@NF, showing a generally smooth and flat morphology without evident dendrites (Figure S24c,d). Therefore, as a result of the improved structural integrity and suppressed dendrite formation, Li@NF demonstrated better cycling stability in the full cells.…”

mentioning

confidence: 99%

See 1 more Smart Citation

Redox-Driven Lithium Perfusion to Fabricate Li@Ni–Foam Composites for High Lithium-Loading 3D Anodes

Jing

et al. 2020

ACS Appl. Mater. Interfaces

View full text Add to dashboard Cite

As the hostless nature of the conventional Li anodes with planar surfaces inevitably causes volume expansion and parasitic dendrite growth, it is essential to develop a composite electrode structure with improved Li plating/ stripping behaviors to mitigate such issues. Herein, a composite Li@NF anode was successfully fabricated through lithium perfusion into the commercial nickel foam (NF) decorated with lithiophilic NiO nanosheets, demonstrating an exceptionally high areal Li loading of 53.2 mg cm −2 with suppressed Li dendrite formation and volume expansion, improved Coulombic efficiency, as well as extended cycling stability in all half, symmetric, and full cell tests. More importantly, density functional theory calculations and control studies with Fe 2 O 3 @NF, pristine NF, and Cu 2 O@CF reveal a linear correlation between the thermodynamics of the surface reactions and the lithiophilicity of the reaction products, attesting to a redox-driven Li perfusion process. Further, through ex situ scanning electron and in situ optical microscopy, the enhanced performance of Li@NF is mainly attributed to the mediation of Li plating/stripping through homogenizing the Li + flux, decentralizing local charge density, and accommodating multidirectional Li deposition by the conductive 3D scaffolds. Consequently, this study offers important insights into the driving of thermal Li perfusion through appropriate material and surface design for achieving safe and stable lithium metal anodes.

show abstract

Section: Resultsmentioning

confidence: 99%

mentioning

confidence: 99%

Redox-Driven Lithium Perfusion to Fabricate Li@Ni–Foam Composites for High Lithium-Loading 3D Anodes

Jing

et al. 2020

ACS Appl. Mater. Interfaces

View full text Add to dashboard Cite

show abstract

“…[106,107] Since electroplating, which effectively activates metal deposition, can only be performed on conductive substrates, conductive materials such as metal particles, carbon materials, or conducting polymers should be preferentially introduced through various approaches, including wet (i.e., electroless plating) or dry (i.e., sputtering, e-beam evaporation, or carbonization) processes. [54,108,109] In the electroplating process, because the metal ions are first adsorbed and then electrically reduced on the substrate (i.e., cathode side) with conducting sites, the surface coverage of conducting seeds on the substrate is very important for uniform deposition of the metal layer. An et al reported that electrodeposition of a Cu layer onto electrospun polyacrylonitrile (PAN)-based elastomeric nanofibers could produce a transparent flexible conductor (Figure 2h−j).…”

Section: Electroless Plating/electroplatingmentioning

confidence: 99%

Interfacial Design and Assembly for Flexible Energy Electrodes with Highly Efficient Energy Harvesting, Conversion, and Storage

Lee

Kwon

et al. 2021

Advanced Energy Materials

View full text Add to dashboard Cite

Charge transfer between a conductive support and active materials as well as between neighboring active materials is one of the most critical factors in determining the performance of various electrodes in energy harvesting, conversion, and/or storage. Particularly, when preparing energy electrodes using conductive and/or electrochemically active nanoparticles (NPs), the bulky organic materials (i.e., ligand or polymeric binder) covering the NP surface seriously limit the charge transfer within the electrode, thereby restricting the energy storage or conversion efficiency. Furthermore, the flexibility and mechanical stability of the electrode have been considered important evaluation indices for flexible/wearable energy applications. In this regard, considerable research has been directed toward controlling the interfacial structure to enhance the charge transfer efficiency and toward incorporating functional materials into flexible/porous supports. This review describes the central progress in flexible electrodes for energy harvesting, conversion, and storage, along with the challenges in designing highperformance energy electrodes. In particular, layer-by-layer (LbL) assembly is analyzed, which is an ultrathin film fabrication technology that enables fine tuning of the interfacial structure for various electrode materials. It is shown how LbL assembly can be effectively applied to energy electrodes to obtain desired functionalities and improve the charge transfer efficiency of electrodes.

show abstract

“…Therefore, appropriate surface modification strategies must be explored to significantly enhance the affinity between the Li and 3D skeletons. The decoration of 3D skeletons with lithiophilic substances is one of the most effective ways, and a reasonable design of micro/nanostructured lithiophilic layer on 3D skeletons facilitates the improvement of the wettability of Li metals, resulting in uniform Li deposition [36][37][38][39][40]. The present metalorganic framework (MOF)-derived pathway is an effective strategy to grow controllable hollow/porous structures and easily introduce lithiophilic N-functional groups or precursors for the conversion to lithiophilic metal oxides [41][42][43].…”

Section: Introductionmentioning

confidence: 99%

General construction of lithiophilic 3D skeleton for dendrite-free lithium metal anode via a versatile MOF-derived route

Zeng

Zhou

et al. 2021

Sci. China Mater.

View full text Add to dashboard Cite

The pursuit of high-mileage models results in the recurrence of lithium metal batteries (LMBs) to researchers' horizon. However, the lithium (Li) metal anode for LMBs undergoes the uncontrollable formation of Li dendrites and infinite volume change during cycling, impeding its practical application. To overcome these challenges, we developed a metal-organic framework (MOF)-derived pathway to construct lithiophilic three-dimensional (3D) skeleton using different substrates (e.g., carbon cloth (CC) and Cu mesh) for dendrite-free lithium metal anodes. As a typical example, the MOF-derived ZnO/nitrogen-doped carbon (NC) nanosheet-modified 3D CC was well-constructed as a lithiophilic hierarchical host (CC@ZnO/NC@Li) for molten Li infiltration. Benefiting from the lithiophilic N-functional groups and LiZn alloy, the synthesized CC@ZnO/NC@Li composite anode promoted the uniform distribution of Li, resulting in a dendrite-free morphology. Meanwhile, the 3D conductive carbon skeleton enhanced the reaction kinetics and buffered the volume change of the electrode. The CC@ZnO/ NC@Li composite anode presented a prolonged lifespan of over 1000 cycles at 5 mA cm −2 with a low overpotential of 19 mV. Coupled with a LiFePO 4 cathode, the CC@ZnO/ NC@Li composite anode also exhibited superior electrochemical properties in the full-cell system. This versatile strategy may open up the channel of designing multi-functional lithiophilic 3D hosts for the Li metal anode.

show abstract

A copper-clad lithiophilic current collector for dendrite-free lithium metal anodes

Abstract: A flexible copper-clad lithiophilic current collector was designed for high coulombic efficiency dendrite-free Li metal anodes.

Cited by 55 publications

References 55 publications

Redox-Driven Lithium Perfusion to Fabricate Li@Ni–Foam Composites for High Lithium-Loading 3D Anodes

Redox-Driven Lithium Perfusion to Fabricate Li@Ni–Foam Composites for High Lithium-Loading 3D Anodes

Interfacial Design and Assembly for Flexible Energy Electrodes with Highly Efficient Energy Harvesting, Conversion, and Storage

General construction of lithiophilic 3D skeleton for dendrite-free lithium metal anode via a versatile MOF-derived route

Contact Info

Product

Resources

About