Layered Ag-graphene films synthesized by Gamma ray irradiation for stable lithium metal anodes in carbonate-based electrolytes

Liu, Jiaxiang; Ma, Haoshen; Wen, Zhipeng; Li, Huiyang; Yang, Jaeyoung; Pei, Nanbiao; Zhang, Peng; Zhao, Jinbao

doi:10.1016/j.jechem.2021.04.044

Cited by 28 publications

(14 citation statements)

References 30 publications

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“…CNZ plays a significant role in improving the electrochemical performance of lithium-free anodes, which benefits from the modification with lithiophilic ZnO, in particular the introduction of micromagnetic fields to promote the deep deposition of lithium. [55] Cycle performance was evaluated to further demonstrate the long-term stability of CNZ for use as a lithium-free anode. Among all the symmetrical cells, under a current density of 2 mA cm −2 , CNZ exhibits the best properties with the lowest overpotential of 49 mV, stable cycling and the longest span-life (Figure 5a).…”

Section: Resultsmentioning

confidence: 99%

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Lithiophilic 3D Copper‐Based Magnetic Current Collector for Lithium‐Free Anode to Realize Deep Lithium Deposition

Zhang

Chen

Wen

et al. 2021

Adv Funct Materials

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Lithium metal is the ideal anode material for high-energy-density lithiumbased batteries. Nevertheless, lithium metal tends to accumulate on the surface of the current collector during the plating and stripping process to form lithium dendrites, resulting in low Coulombic efficiency and safety issues. Here, a lithiophilic 3D copper-based magnetic current collector is designed by loading ferromagnetic nickel-cobalt alloy and lithiophilic zinc oxide onto the copper foam to create a lithium-free anode. Under the micromagnetic field, the novel lithium-free anode achieves a high level of deep lithium deposition (from 300 µm to about 1000 µm), successfully alleviating the large change of lithium volume. In addition, the Coulombic efficiency and cyclic stability are improved effectively. With a total capacity of 1 mA h cm −2 at a current density of 1 mA cm −2 , the Coulombic efficiency of the above remains 95% at 590th-cycle. Moreover, the symmetric cell can stably cycle for more than 560 h at 2 mA cm −2 with the capacity of 1 mA h cm −2 . This novel strategy will potentially open up new horizons for lithium-free anodes, which may be generalized to other advanced energy storage systems.

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Section: Resultsmentioning

confidence: 99%

“…CNZ plays a significant role in improving the electrochemical performance of lithium‐free anodes, which benefits from the modification with lithiophilic ZnO, in particular the introduction of micromagnetic fields to promote the deep deposition of lithium. [ 55 ]…”

Section: Resultsmentioning

confidence: 99%

Lithiophilic 3D Copper‐Based Magnetic Current Collector for Lithium‐Free Anode to Realize Deep Lithium Deposition

Zhang

Chen

Wen

et al. 2021

Adv Funct Materials

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“…Other works using graphene-based substrates for Li metal are listed in Table 2. Graphene-based substrates including accordion-like graphene oxide array, [128] Ag nano-particles/layered graphene oxide nanosheets, [129] Li x M (M = Si, Sn, or Al) nanoparticles/graphene sheets, [130] Li/graphene, [105] Janus-faced graphene, [131] N-graphene aerogels, [132] mesoporous silica-coated graphene nanosheets, [133] 3D graphene substrate with continuous duct-like structure, [134] graphene/ MgF 2 substrate, [135] PVDF-supported graphene foam, [136] AlNembedded reduced graphene oxide (rGO) scaffold, [137] and so on have been reported. In general, by reasonably modifying graphene and combining lithiophilic designs, the graphene-based substrates can uniformly deposit Li and inhibit the growth of Li dendrite by relying on large specific surface areas and lithiophilic sites.…”

Section: Graphene-based Substratementioning

confidence: 99%

Carbon/Lithium Composite Anode for Advanced Lithium Metal Batteries: Design, Progress, In Situ Characterization, and Perspectives

Lyu

Luo

Wang

et al. 2022

Advanced Energy Materials

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The lithium metal anode is a competitive candidate for next‐generation lithium‐ion batteries for its low redox potential and ultra‐high theoretical specific capacity. Nevertheless, obstacles regarding heterogeneous lithium deposition, dendrite growth, and poor Coulombic efficiency limit its practical application. Among rational electrode designs, carbon materials have been regarded as feasible hosts for stabilizing lithium to address the above issues due to their light weight, high conductivity, and adjustable physicochemical properties. Therefore, tremendous efforts have been made to design stereoscopic carbon materials with multitudinous lithiophilic sites and large specific surface areas to facilitate rapid lithium‐ion flux, nucleation and mitigate lithium dendrite formation by controlling the kinetics of lithium deposition. Furthermore, the mechanism of lithium plating/stripping is commendably elucidated with the help of advanced in situ characterization techniques. This progress report systematically reviews progress in carbon materials/lithium composite anodes for lithium metal batteries and the detailed parts are as follows: 1) carbon/lithium composite methods; 2) design lithiophilic mechanism; 3) various carbon materials substrates; 4) advanced in situ characterization techniques for lithium metal anodes; and 5) prospects toward the practical applications of advanced lithium metal batteries. This review provides new insights into lithium metal batteries’ technological development and practical application.

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“…Heteroatom doping or metal composites with graphene have both reportedly increased the lithiophilicity, provided uniform Li deposition, and low nucleation potential. [6,34] Previously, 3D graphene assemblies were prepared in the form of graphene films, [14,[35][36][37][38] 3D foams, [39] and crumpled graphene balls using vacuum filtration, hydrothermal treatment, [40,41] and spray drying, [42] and all of these assemblies were used as 3D hosts. However, in these 3D graphene hosts, the contacts between 2D graphene were typically weak, which caused their corresponding 3D structures to be prone to breakage during the large volume changes induced by the repeated charge and discharge processes.…”

Section: Introductionmentioning

confidence: 99%

Mechanically Resilient Graphene Assembly Microspheres with Interlocked N‐Doped Graphene Nanostructures Grown In Situ for Highly Stable Lithium Metal Anodes

Kim

Lee

Choi

et al. 2022

Adv Funct Materials

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Li metal is considered the most attractive anode material for high‐energy Li batteries. However, the uncontrollable growth of Li dendrites and severe volume changes during Li plating and stripping inhibit the practical application of Li metal anodes. Herein, a synergistic strategy is developed not only to suppress Li dendrite growth but also to withstand repeated volume changes during long‐term cycling. Specifically, mechanically resilient graphene assembly microspheres with interlocked Ni/N‐doped lithiophilic graphene nanostructures grown in situ are developed as stable 3D graphene hosts for Li‐metal anodes. Importantly, the approach provides a novel strategy to control radial distribution of lithiophilic Ni nanocatalysts in the graphene assembly. These 3D graphene hosts can repeatedly guide the uniform deposition of Li owing to the high lithiophilicity of Ni nanocatalysts and the N‐doped graphene nanostructures. Furthermore, graphene nanoshell forms in situ between the graphene layers in the inner part of the graphene assembly, creating strong contacts between rGO layers and providing the 3D graphene host with high structural integrity. Notably, the approach emphasizes mechanical resilience of the 3D graphene host, which retains its initial morphology after repeated Li plating/stripping cycles. Consequently, the 3D graphene host maintains a highly stable coulombic efficiency of 99% over 500 cycles.

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Layered Ag-graphene films synthesized by Gamma ray irradiation for stable lithium metal anodes in carbonate-based electrolytes

Cited by 28 publications

References 30 publications

Lithiophilic 3D Copper‐Based Magnetic Current Collector for Lithium‐Free Anode to Realize Deep Lithium Deposition

Lithiophilic 3D Copper‐Based Magnetic Current Collector for Lithium‐Free Anode to Realize Deep Lithium Deposition

Carbon/Lithium Composite Anode for Advanced Lithium Metal Batteries: Design, Progress, In Situ Characterization, and Perspectives

Mechanically Resilient Graphene Assembly Microspheres with Interlocked N‐Doped Graphene Nanostructures Grown In Situ for Highly Stable Lithium Metal Anodes

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