Ni@Li2O co-axial nanowire based reticular anode: Tuning electric field distribution for homogeneous lithium deposition

Zou, Peichao; Chiang, Sumwai; Li, Jing; Wang, Yang; Wang, Xuanyu; Wu, Dang; Nairan, Adeela; Kang, Feiyu; Yang, Cheng

doi:10.1016/j.ensm.2018.09.020

Cited by 63 publications

(44 citation statements)

References 50 publications

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“…Furthermore, electric field simulation should also move forward from the recent mature analysis of the failure mechanism (uneven distribution) to developing strategies for proactively guiding the homogeneous distribution of electric fields through material and structural designs. [225,226]…”

Section: Electric Field Simulationmentioning

confidence: 99%

Dendrites in Zn‐Based Batteries

et al. 2020

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Section: Electric Field Simulationmentioning

confidence: 99%

Dendrites in Zn‐Based Batteries

et al. 2020

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“…Therefore, high-aspect-ratio metal nanowires were assembled as a self-supported 3D network structure to substitute the typical current collectors (Figure 2e,f). [65][66][67][68][69] The nanostructured host electrode materials can provide a well-developed conducting network structure and numerous macropores for Li metal storage as well as a high open surface area with active catalytic sites. In addition, such materials can exhibit high flexibility, as shown in Figure 2f) for a freestanding 3D Cu nanowire network.…”

Section: Free-standing Metal-based Nanoframeworkmentioning

confidence: 99%

“…In addition, such materials can exhibit high flexibility, as shown in Figure 2f) for a free‐standing 3D Cu nanowire network. [ 67 ] In a continuous metal plating/dissolution process conducted for 200 cycles (200 h), several self‐supported electrode materials such as Ni@Li 2 O co‐axial nanowires, [ 65 ] free‐standing Cu nanowire networks, [ 66 ] phosphidized 3D Cu nanowire networks, [ 67 ] and 3D vanadium nitride (VN) nanowire arrays [ 68 ] showed high CEs of 97.3–99.9% and stable cycling behavior without dendritic metal growth. Zhu et al.…”

Section: Metal‐based Electrode Materialsmentioning

confidence: 99%

Advances in the Design of 3D‐Structured Electrode Materials for Lithium‐Metal Anodes

2020

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In view of their high energy densities, absence of memory effects, and high round-trip energy efficiencies, conventional lithium-ion batteries (LIBs) are widely used on scales ranging from compact electronic devices to grid systems [8,9] but are currently reaching their maximal capacity, as their specific/volumetric energy densities are limited by the use of heavy metal-based active host materials. [10,11] The use of Li as a high-energy active anode material is a possible solution to this problem, as this metal exhibits a high theoretical capacity of ≈3860 mAh g −1 and a low redox potential (−3.040 V vs the standard hydrogen electrode). [12,13] However, the Li-metal anode (LMA) has some fatal drawbacks originating from highaspect-ratio metal growth, e.g., continuous electrolyte consumption, Coulombic efficiency (CE) reduction, elevated cell polarization due to side reactions producing dead Li, and safety issues caused by electrode short-circuiting. [14,15] Recently, these drawbacks have been addressed by several approaches such as electrode design and electrolyte engineering. [16-21] Metal growth can be described by a first-order linear equation as Although the lithium-metal anode (LMA) can deliver a high theoretical capacity of ≈3860 mAh g −1 at a low redox potential of −3.040 V (vs the standard hydrogen electrode), its application in rechargeable batteries is hindered by the poor Coulombic efficiency and safety issues caused by dendritic metal growth. Consequently, careful electrode design, electrolyte engineering, solid-electrolyte interface control, protective layer introduction, and other strategies are suggested as possible solutions. In particular, one should note the great potential of 3D-structured electrode materials, which feature high active specific surface areas and stereoscopic structures with multitudinous lithiophilic sites and can therefore facilitate rapid Li-ion flux and metal nucleation as well as mitigate Li dendrite formation through the kinetic control of metal deposition even at high local current densities. This progress report reviews the design of 3D-structured electrode materials for LMA according to their categories, namely 1) metal-based materials, 2) carbon-based materials, and 3) their hybrids, and allows the results obtained under different experimental conditions to be seen at a single glance, thus being helpful for researchers working in related fields.

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“…The uneven electric field distribution is regarded as a main driving force for the uncontrolled Li dendrites growth . The currently proposed porous and conductive 3D LiB skeleton is expected to decentralize the electric field, reduce the local current density and regulate the Li + deposition.…”

Section: Resultsmentioning

confidence: 99%

Mg Doped Li–LiB Alloy with In Situ Formed Lithiophilic LiB Skeleton for Lithium Metal Batteries

Huang

et al. 2020

Advanced Science

119

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High energy density lithium metal batteries (LMBs) are promising next‐generation energy storage devices. However, the uncontrollable dendrite growth and huge volume change limit their practical applications. Here, a new Mg doped Li–LiB alloy with in situ formed lithiophilic 3D LiB skeleton (hereinafter called Li–B–Mg composite) is presented to suppress Li dendrite and mitigate volume change. The LiB skeleton exhibits superior lithiophilic and conductive characteristics, which contributes to the reduction of the local current density and homogenization of incoming Li+ flux. With the introduction of Mg, the composite achieves an ultralong lithium deposition/dissolution lifespan (500 h, at 0.5 mA cm−2) without short circuit in the symmetrical battery. In addition, the electrochemical performance is superior in full batteries assembled with LiCoO2 cathode and the manufactured composite. The currently proposed 3D Li–B–Mg composite anode may significantly propel the advancement of LMB technology from laboratory research to industrial commercialization.

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Ni@Li2O co-axial nanowire based reticular anode: Tuning electric field distribution for homogeneous lithium deposition

Cited by 63 publications

References 50 publications

Dendrites in Zn‐Based Batteries

Dendrites in Zn‐Based Batteries

Advances in the Design of 3D‐Structured Electrode Materials for Lithium‐Metal Anodes

Mg Doped Li–LiB Alloy with In Situ Formed Lithiophilic LiB Skeleton for Lithium Metal Batteries

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