Porous Lithiophilic Li–Si Alloy‐Type Interfacial Framework via Self‐Discharge Mechanism for Stable Lithium Metal Anode with Superior Rate (Adv. Energy Mater. 37/2021)

Park, Jung Been; Choi, Changhoon; Yu, Seungho; Chung, Kyung Yoon; Kim, Dong-Wan

doi:10.1002/aenm.202170146

Cited by 8 publications

(7 citation statements)

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“…A rate ability of above 10 C and cycling life of more than 2000 cycles were demonstrated in coin-level LMBs. [69][70][71] At ultrahighenergy-density criteria above 450 W h kg À1 , AFLPBs are impeded by a small current density of 0.5C and restricted cyclic life below 300 cycles, indicating tremendous performance differences derived from the energy density gap. The enormous gap between AFLPBs and coin-level batteries in electrochemical performance causes two constitutions of extremely divergent running and invalidation mechanisms with different difficulties.…”

Section: Designing Ultrahigh-energy-density Aflpbsmentioning

confidence: 99%

Toward practical anode-free lithium pouch batteries

Dong,

Zhong,

Zhang

et al. 2023

Energy Environ. Sci.

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Section: Designing Ultrahigh-energy-density Aflpbsmentioning

confidence: 99%

Toward practical anode-free lithium pouch batteries

Dong,

Zhong,

Zhang

et al. 2023

Energy Environ. Sci.

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“…However, the LFP||Li cell shows poor cycling performance at 5 C. The LFP||3D Cu-LiSn-Li cell shows much more stable long-term cycling (average CE of ≈99.4%), compared to the LFP||Li cell at 10 C (Figure b). There are limited reports on the cycling stability of lithium metal anodes with high current densities. , At high current densities, the LFP cells with the 3D Cu-LiSn-Li anode exhibit competitively ultrahigh initial capacities and exceptional stability for long-term cycling and capability retention compared to other LFP cells from previous studies, as summarized in Table S3 (Supporting Information). The advantages of rapid charge and discharge circles at high current densities open the door to high-power applications for lithium metal batteries.…”

mentioning

confidence: 99%

High Rate and Low-Temperature Stable Lithium Metal Batteries Enabled by Lithiophilic 3D Cu-CuSn Porous Framework

Li,

Zheng,

Gao

et al. 2023

Nano Lett.

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Lithium (Li) metal is regarded as the “Holy Grail” of anodes for high-energy rechargeable lithium batteries by virtue of its ultrahigh theoretical specific capacity and the lowest redox potential. However, the Li dendrite impedes the practical application of Li metal anodes. Herein, lithiophilic three-dimensional Cu-CuSn porous framework (3D Cu-CuSn) was fabricated by a vapor phase dealloying strategy via the difference in saturated vapor pressure between different metals and the Kirkendall effect. CuSn alloy sites were converted into LiSn alloy sites through the molten Li infusion method, and composite Li metal anodes (3D Cu-LiSn-Li) are achieved. Alloyed tin, as the bridge between the porous copper substrate and metallic Li, plays a critical role in optimizing Li nucleation and enhancing the fast lithium migration kinetics. This work demonstrates that lithiophilic binary copper alloys are an effective way to achieve room-temperature high rate performance and satisfied low-temperature cycling stability for Li metal batteries.

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“…[22,23] Specifically, the bonus of fast charge transfer could be achieved for Li metal composite with a Li + conductive alloy host. [24,25] Despite of these great research achievements, the electrochemical performance of the state-of-the-art Li metal anode still cannot satisfy the demand for practical rechargeable Li metal batteries. Advanced material/electrode designs based on novel mechanism are highly desirable for realizing stable Li metal anode with high Li utilization and long cycle lifespan for practical harsh application conditions.…”

mentioning

confidence: 99%

Dynamic Concentration of Alloying Element on Anode Surface Enabling Cycle‐Stable Li Metal Batteries

Wang,

He,

Liu

et al. 2023

Adv Funct Materials

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The pursuit of high energy density Li‐based rechargeable batteries has intrigued numerous research interest on Li metal anode. However, several significant challenges, including severe parasitic reactions and growth of Li dendrites, lead to fast electrode failure and impede its practical implantation. Herein, it is revealed that the dynamic concentration of alloying element in Li solid solution can significantly improve the cycling stability. It is demonstrated that the alloying element of Li solid solution continuously evolved in the reaction layer on cycling. Alloying element got enriched on anode surface after Li stripping, and re‐dispersed into the deposited Li during Li plating processes. The alloying element‐rich surface can reduce the Li nucleation barrier and promote the uniform Li plating behavior. Ultrathin Li solid solution foils are fabricated, and the dynamic alloying element concentration mechanism is further verified, and the cycling lifespan of pure Li is doubled. Consequently, a 1.4 Ah laminated pouch cell with ultrathin Li solid solution anode (30 µm) exhibits high energy density of 836 Wh L−1 and stable cycling performance under the harsh conditions with low negative/positive capacity (N/P) ratio of 2 and electrolyte/capacity (E/C) ratio of 2.6 g Ah−1.

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Porous Lithiophilic Li–Si Alloy‐Type Interfacial Framework via Self‐Discharge Mechanism for Stable Lithium Metal Anode with Superior Rate (Adv. Energy Mater. 37/2021)

Cited by 8 publications

References 0 publications

Toward practical anode-free lithium pouch batteries

Toward practical anode-free lithium pouch batteries

High Rate and Low-Temperature Stable Lithium Metal Batteries Enabled by Lithiophilic 3D Cu-CuSn Porous Framework

Dynamic Concentration of Alloying Element on Anode Surface Enabling Cycle‐Stable Li Metal Batteries

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