Biofilm Nanofiber-Coated Separators for Dendrite-Free Lithium Metal Anode and Ultrahigh-Rate Lithium Batteries

Nie, Lu; Li, Yingfeng; Chen, Shaojie; Li, Ké; Huang, Yonghui; Zhu, Ying; Sun, Zhetao; Zhang, Jicong; He, Yingjie; Cui, Mengkui; Wei, Shicao; Qiu, Feng; Zhong, Chao; Liu, Wei

doi:10.1021/acsami.9b08656

Cited by 63 publications

(48 citation statements)

References 57 publications

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“…As compared with results across the published reports, the devices with the BNNTMs separator exhibit excellent Li dendritesuppressing ability to enable exceptional small overpotential ( Supplementary Fig. 13) and cycling stability with a cumulative lifetime capacity exceeding 4,000 mAh cm -2 , exceeding the lifetime capacity of typical LIBs (typically < 2,000 mAh cm -2 ) 44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60 (Fig. 4j) (Details are shown in Supplementary Table S3).…”

Section: Lithium-ion Transference Number (T LImentioning

confidence: 72%

Super Electrolyte-Philic Boron Nitride Nanotube Membranes as Highly Robust Separators for Lithium Batteries

Duan¹,

Shen²,

Zhu³

et al. 2020

Preprint

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The widespread deployment of lithium ion (Li+) batteries with increasing energy density entails a worsening safety concern. Among many contributing factors, the typical polymer separators are plagued with poor thermal stability,limited mechanical strength and lower Li+ transference number, and are prone to catastrophic failure when subjected to local thermalor mechanical stress (e.g., pierced by lithium dendrites). Herein, we report an all-inorganicnonwoven boron nitride nanotube membrane featuring exceptional chemical stability, thermal stability, fire resistance and mechanical flexibility. The resulting membranes show superior wettability to electrolyte to endow excellent Li+ transport properties with the lowest ionic resistance and the highest Li+ transference number (0.86) when compared with all commercial separators. They can thus function as highly robust separators for Li/Li symmetriccells with ultralow overpotential (8.5 mV) and exceptional reversibility for repeated lithium plating/stripping cycles for over 8000 hours, and for practical LiFePO4/Li cell with unusually high temperature stability. Our study defines a unique class of super electrolyte-philic ceramic separators with favorable mechanical strength, thermal stability and ion transfer properties for advanced lithium batteries.

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Section: Lithium-ion Transference Number (T LImentioning

confidence: 72%

Super Electrolyte-Philic Boron Nitride Nanotube Membranes as Highly Robust Separators for Lithium Batteries

Duan¹,

Shen²,

Zhu³

et al. 2020

Preprint

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“…[22] Figure S15 shows the typical Nyquist plots of Li j AuÀ GCP, Li j GCP, and Li j Cu cells, where the high-frequency semicircle corresponds to the interfacial transport resistance associated with the resistance at the electrode/electrolyte interface. [23] The interfacial transport resistance of AuÀ GCP electrode is 44 Ω after 10 cycles and then keeps at 38 Ω after 50 cycles, lower than that of both GCP electrode and Cu foil electrode after every cycle. It indicates that the outstanding electrode interface stability benefits from the homogeneous nucleation and spherical deposition of Li in AuÀ GCP network.…”

Section: Resultsmentioning

confidence: 93%

Sustainable and Robust Graphene Cellulose Paper Decorated with Lithiophilic Au Nanoparticles to Enable Dendrite‐free and High‐Power Lithium Metal Anode

Diao

Xie

et al. 2021

Chemistry A European J

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Lithium metal anodes (LMAs) with high energy density have recently captured increasing attention for development of next-generation batteries. However, practical viability of LMAs is hindered by the uncontrolled Li dendrite growth and infinite dimension change. Even though constructing 3D conductive skeleton has been regarded as a reliable strategy to prepare stable and low volume stress LMAs, engineering the renewable and lithiophilic conductive scaffold is still a challenge. Herein, a robust conductive scaffold derived from renewable cellulose paper, which is coated with reduced graphene oxide and decorated with lithiophilic Au nanoparticles, is engineered for LMAs. The graphene cellulose fibres with high surface area can reduce the local current density, while the well-dispersed Au nanoparticles can serve as lithiophilic nanoseeds to lower the nucleation overpotential of Li plating. The coupled relationship can guarantee uniform Li nucleation and unique spherical Li growth into 3D carbon matrix. Moreover, the natural cellulose paper possesses outstanding mechanical strength to tolerate the volume stress. In virtue of the modulated deposition behaviour and near-zero volume change, the hybrid LMAs can achieve reversible Li plating/ stripping even at an ultrahigh current density of 10 mA cm À 2 as evidenced by high Coulombic efficiency (97.2 % after 60 cycles) and ultralong lifespan (1000 cycles) together with ultralow overpotential (25 mV). Therefore, this strategy sheds light on a scalable approach to multiscale design versatile Li host, promising highly stable Li metal batteries to be feasible and practical.

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“…The straight line is attributed to the Li-ion Warburg diffusion process in the electrode. Moreover, the Li-ion diffusion coefficient (D Li+ ) can be calculated using the following equation [25].…”

Section: Resultsmentioning

confidence: 99%

LaNiO3 as a Novel Anode for Lithium-Ion Batteries

Zhang

et al. 2020

Trans. Tianjin Univ.

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Lithium-ion batteries (LIBs) have been developed for over 30 years; however, existing electrode materials cannot satisfy the increasing requirements of high-energy density, stable cycling, and low cost. Here, we present a perovskite-type LaNiO 3 oxide (LNO) as a new negative electrode material. LNO was successfully synthesized by a sol-gel method. The microstructure and electrochemical performance of LNO calcined at various temperatures have been systematically investigated. The LNO electrode shows a high rate capability and long cycling stability. In a Crate test, a specific capacity of 77 mAh/g was exhibited at 6 C. LNO can also deliver a specific capacity of 92 mAh/g after 200 cycles at 1 C. This paper presents a type of binary metal oxide as a new anode material for high-performance LIBs.

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Biofilm Nanofiber-Coated Separators for Dendrite-Free Lithium Metal Anode and Ultrahigh-Rate Lithium Batteries

Cited by 63 publications

References 57 publications

Super Electrolyte-Philic Boron Nitride Nanotube Membranes as Highly Robust Separators for Lithium Batteries

Super Electrolyte-Philic Boron Nitride Nanotube Membranes as Highly Robust Separators for Lithium Batteries

Sustainable and Robust Graphene Cellulose Paper Decorated with Lithiophilic Au Nanoparticles to Enable Dendrite‐free and High‐Power Lithium Metal Anode

LaNiO3 as a Novel Anode for Lithium-Ion Batteries

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