Li–LiAl alloy composite with memory effect as high-performance lithium metal anode

Zhuang, Huifeng; Zhao, Ping; Li, Guangda; Xu, Yue; Jia, Xiang

doi:10.1016/j.jpowsour.2020.227977

Cited by 32 publications

(16 citation statements)

References 45 publications

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“…In consideration of these advantages, the Li-Al alloy is a promising candidate for the advanced anode material. Li-Al alloy has been studied as the protective coating layer of Li (20,21) and the anode material (22)(23)(24) in liquid electrolyte batteries, whereas it has been rarely reported in all-solid-state LSBs with sulfide SSEs.…”

Section: Introductionmentioning

confidence: 99%

Carbon-free and binder-free Li-Al alloy anode enabling an all-solid-state Li-S battery with high energy and stability

et al. 2022

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Incompatibility of electrolytes with Li anode impedes the application of solid-state batteries. Aluminum with appropriate potential, high-capacity, and electronic conductivity can alloy with Li spontaneously and is proposed herein as a carbon-free and binder-free anode of an all-solid-state Li-S battery (LSB). A biphasic lithiation reaction of Al with modest volume change was revealed by in situ characterization. The Li 0.8 Al alloy anode showed excellent compatibility toward the Li 10 GeP 2 S 12 (LGPS) electrolyte, as verified by the steady Li 0.8 Al-LGPS-Li 0.8 Al cell operation for over 2500 hours at 0.5 mA cm −2 . An all-solid-state LSB comprising Li 0.8 Al alloy anode and melting-coated S composite cathode functioned steadily for over 200 cycles with a capacity retention of 93.29%. Furthermore, a Li-S full cell with a low negative-to-positive ratio of 1.125 delivered a specific energy of 541 Wh kg −1 . This work provides an applicable anode selection for all-solid-state LSBs and promotes their practical procedure.

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Section: Introductionmentioning

confidence: 99%

Carbon-free and binder-free Li-Al alloy anode enabling an all-solid-state Li-S battery with high energy and stability

et al. 2022

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“…Owing to the intense local current density stemming from the intensified electric field (Figure S10a, Supporting Information), [ 22 ] the Li deposited unevenly on the bare Li, building island‐like sparse domains. After full Li stripping, the Li surface foamed and had an uneven surface (Figure S10b, Supporting Information) [ 47 ] due to the endless dendrite proliferation of the hostless Li (Figure S11, Supporting Information). Bare Li forms unstable SEI and “dead Li” during the repeated plating/stripping processes, which may lead to the critical hidden dangers of LMB such as “dry‐out” and “soft short circuit.” [ 12 ] In contrast, the Li deposited homogeneously in porous LSIF (Figure 4f and Figure S10c, Supporting Information), forming a smooth surface.…”

Section: Resultsmentioning

confidence: 99%

Porous Lithiophilic Li–Si Alloy‐Type Interfacial Framework via Self‐Discharge Mechanism for Stable Lithium Metal Anode with Superior Rate

Park

Choi

et al. 2021

Advanced Energy Materials

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Lithium is regarded as an ideal anode for next‐generation Li metal batteries (LMB) as it exhibits extraordinarily high theoretical capacity and the lowest electrochemical potential among all anode candidates. However, safety concerns and poor cycling stability of Li induced by uncontrollable dendrite growth and severe side reactions impede its practical application for LMB. Although various strategies for fabricating Li anodes have been suggested, developing high‐rate LMB remains a significant challenge. To address this challenge, the use of a 3D porous Li–Si alloy‐type interfacial framework (LSIF) created via a “self‐discharge” mechanism with the aid of an electrolyte is proposed here. Exploiting the in situ spontaneous prelithiation, lithiophilic Li15Si4 particles are homogenously arranged to build porous 3D LSIF. The balanced ionic/electronic conducting LSIF serves as a stable Li host, helping to suppress dendrite growth and volume expansion during cycling. The LSIF@Li anode possesses a strong affinity toward Li, rapid Li diffusion kinetics, and low nucleation/diffusion barriers. Moreover, the LSIF@Li symmetric cells are capable of stable cycling (over 1000 cycles) even at an ultrahigh current density (15 mA cm–2). When paired with LiNi0.5Co0.2Mn0.3O2 or LiFePO4, LSIF@Li full cells show improved rate capability and long‐term cycling stability (≈2000 cycles) at 10 C.

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“…Therefore, more efforts are required to develop economical metals as the surface coating on the current collectors. In other cases, some (non)metals are also used as 3D lithiophilic hosts to accommodate the deposited lithium, reduce the local current density, and suppress the formation of the lithium dendrites (Kong et al, 2019;Pathak et al, 2020;Ye et al, 2020;Zhuang et al, 2020). The 3D substrate functioned with the lithiophilic Li-Zn alloy surface was designed to induce the uniform lithium deposition along the conductive skeleton, effectively suppress the dendrite growth and volume expansion (Ye et al, 2020).…”

Section: Electrochemically Reactive Substratesmentioning

confidence: 99%

Controlled Lithium Deposition

Zhang

Yang

et al. 2022

Front. Energy Res.

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Lithium metal is a promising anode material for its low redox potential and high theoretical specific capacity. However, the commercial application of the lithium metal anode is hindered with safety concerns arising from the uncontrolled growth of the lithium dendrites and significant volume variation during the lithium plating and stripping processes. Modification to the current collector is effective in tailoring the morphology of the deposited lithium and improving the cycling performance of the lithium metal batteries This review summarizes at first the global research advances in the structural design and the selection of the current collectors and their textures. It then presents some of our efforts in realizing controlled lithium deposition by designing current collectors in three aspects, lithium deposition induced by the micro-to-nano structures, lithiophilic alloys and iron carbides. Finally, conclusions and prospects are made for the further research of the current collectors.

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Li–LiAl alloy composite with memory effect as high-performance lithium metal anode

Cited by 32 publications

References 45 publications

Carbon-free and binder-free Li-Al alloy anode enabling an all-solid-state Li-S battery with high energy and stability

Carbon-free and binder-free Li-Al alloy anode enabling an all-solid-state Li-S battery with high energy and stability

Porous Lithiophilic Li–Si Alloy‐Type Interfacial Framework via Self‐Discharge Mechanism for Stable Lithium Metal Anode with Superior Rate

Controlled Lithium Deposition

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