A Flexible Solid Electrolyte Interphase Layer for Long‐Life Lithium Metal Anodes

Li, Nianwu; Shi, Yang; Yin, Ya‐Xia; Zeng, Xian‐Xiang; Li, Jinyi; Li, Congju; Li, Wan; Wen, Rui; Guo, Yu‐Guo

doi:10.1002/anie.201710806

Cited by 644 publications

(391 citation statements)

References 45 publications

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“…2019, 9,1900260 field (Figure 1b,c). [29,30,47,44] Li + deflects after receiving a Lorentz force perpendicular to the velocity direction (Figure 1g). [43,46] However, when magnetic field is applied, Li + is subjected to Lorentz force during the movement.…”

Section: Resultsmentioning

confidence: 99%

Magnetic Field–Suppressed Lithium Dendrite Growth for Stable Lithium‐Metal Batteries

Shen

Wang

et al. 2019

Advanced Energy Materials

233

135

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for the battery technologies. However, the main impediment for the practical application of lithium metal batteries is the lithium dendrite formation. [5] It not only penetrates the separator to induce the short circuit of the batteries, [6] but also generates high surface area in the anode to accelerate the unwanted side reactions between electrolytes and lithium metal, resulting in the electrolyte depletion and the subsequent battery failure. [7][8][9] Up to now, many strategies targeting lithium dendrites suppression rely on the "internal strategies," i.e., the modification or optimization of the components inside the cells. Those strategies include electrolyte optimization, artificial solid electrolyte interphase (SEI) design, and synthesis of 3D current collector. [1] Electrolyte additives such as LiF, [10] LiNO 3 , [11] and Li 2 S x [12] were chosen to form stable SEI on the surface of Li anode to suppress the dendrite growth. [13] For creating artificial SEI layer on the anode, gas treatment [14] (N 2 , O 2 , CO 2 , or SO 2 ), liquid treatment (Li 3 PO 4[15] and Cu 3 N/styrene−butadiene rubber [16] ), and physical deposition of nanofilm (Al 2 O 3 , [17] carbon, [18] and organic polymer [19] ) are the three typical methods by accessing the internal interface of the battery. The rational design of 3D current collectors also helps to inhibit dendritic growth. [20] One type of 3D current collectors is lithiophilic matrix such as lithiophilic-lithiophobic gradient interfacial layer, [21] N-doped graphene, [22] and metal−organic framework, [23] which redistributes Li-ions to the anode surface through chemical bonding interactions to achieve uniform lithium deposition. The other type is conductive matrix including porous carbon, [7] graphene matrix, [24] 3D-ordered macroporous Cu, [25] and fibrous metal felt [26] that reduces dendritic growth by reducing the current density with a large surface area. [27,28] Although these "internal strategies" could effectively suppress the dendrite formation, cell stability becomes a concern due to the change of the cell environment such as the use of additives and the modification of the electrode.Introducing an "external strategy," by using external magnetic field to rearrange the Li + concentration on the anode surface, could achieve a uniform lithium deposition. The latest study shows that the growth of Li dendrites stems from the nonuniform Li + concentration on the electrode surface. [29] Lithium metal is the most attractive anode material due to its extremely high specific capacity, minimum potential, and low density. However, uncontrollable growth of lithium dendrite results in severe safety and cycling stability concerns, which hinders the application in next generation secondary batteries. In this paper, a new and facile method imposing a magnetic field to lithium metal anodes is proposed. That is, the lithium ions suffering Lorentz force due to the electromagnetic fields are put into spiral motion causing magnetohydrodynamics (MHD) effect. This MHD effect can effecti...

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Section: Resultsmentioning

confidence: 99%

Magnetic Field–Suppressed Lithium Dendrite Growth for Stable Lithium‐Metal Batteries

Shen

Wang

et al. 2019

Advanced Energy Materials

233

135

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“…Li ions migrate between cathodes and anodes through electrolytes and separators repeatedly to experience the electrochemical reactions in rechargeable batteries ( 24 , 25 ). Because of the ionically insulated nature of the commercial separator skeleton, the electrolytes in the separators pave the way for Li-ion transport between cathodes and anodes.…”

Section: Introductionmentioning

confidence: 99%

An ion redistributor for dendrite-free lithium metal anodes

et al. 2018

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“…Moreover, the nonuniform deposition of Li metal in LEs upon cycling will generate undesired mossy or dendritic Li, resulting in increased impedance and capacity decay . Sometimes, the resulting dendrite tips will pierce through the separator, introducing serious safety issues (e.g., catastrophic fires or explosion) …”

Section: Introductionmentioning

confidence: 99%

Flexible, Flame‐Resistant, and Dendrite‐Impermeable Gel‐Polymer Electrolyte for Li–O₂/Air Batteries Workable Under Hurdle Conditions

Zou

Lü

Zhong

et al. 2018

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Gel-polymer electrolytes are considered as a promising candidate for replacing the liquid electrolytes to address the safety concerns in Li-O /air batteries. In this work, by taking advantage of the hydrogen bond between thermoplastic polyurethane and aerogel SiO in gel polymer, a highly crosslinked quasi-solid electrolyte (FST-GPE) with multifeatures of high ionic conductivity, high mechanical flexibility, favorable flame resistance, and excellent Li dendrite impermeability is developed. The resulting gel-polymer Li-O /air batteries possess high reaction kinetics and stabilities due to the unique electrode-electrolyte interface and fast O diffusion in cathode, which can achieve up to 250 discharge-charge cycles (over 1000 h) in oxygen gas. Under ambient air atmosphere, excellent performances are observed for coin-type cells over 20 days and for prototype cells working under extreme bending conditions. Moreover, the FST-GPE electrolyte also exhibits durability to protect against fire, dendritic Li, and H O attack, demonstrating great potential for the design of practical Li-O /air batteries.

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A Flexible Solid Electrolyte Interphase Layer for Long‐Life Lithium Metal Anodes

Cited by 644 publications

References 45 publications

Magnetic Field–Suppressed Lithium Dendrite Growth for Stable Lithium‐Metal Batteries

Magnetic Field–Suppressed Lithium Dendrite Growth for Stable Lithium‐Metal Batteries

An ion redistributor for dendrite-free lithium metal anodes

Flexible, Flame‐Resistant, and Dendrite‐Impermeable Gel‐Polymer Electrolyte for Li–O₂/Air Batteries Workable Under Hurdle Conditions

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A Flexible Solid Electrolyte Interphase Layer for Long‐Life Lithium Metal Anodes

Cited by 644 publications

References 45 publications

Magnetic Field–Suppressed Lithium Dendrite Growth for Stable Lithium‐Metal Batteries

Magnetic Field–Suppressed Lithium Dendrite Growth for Stable Lithium‐Metal Batteries

An ion redistributor for dendrite-free lithium metal anodes

Flexible, Flame‐Resistant, and Dendrite‐Impermeable Gel‐Polymer Electrolyte for Li–O2/Air Batteries Workable Under Hurdle Conditions

Contact Info

Product

Resources

About

Flexible, Flame‐Resistant, and Dendrite‐Impermeable Gel‐Polymer Electrolyte for Li–O₂/Air Batteries Workable Under Hurdle Conditions