MOF-derived porous Co3O4-NC nanoflake arrays on carbon fiber cloth as stable hosts for dendrite-free Li metal anodes

Jiang, Guangyu; Jiang, Nan; Zheng, Nan; Xiao, Chen; Mao, Jiayi; Ding, Guoyu; Li, Yahui; Sun, Fugen; Li, Yongsheng

doi:10.1016/j.ensm.2019.05.014

Cited by 157 publications

(119 citation statements)

References 48 publications

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“…The symmetrical cells with KL‐Zn electrodes demonstrated much lower polarization than that of the bare Zn at current densities of 0.2, 1.8, and 4.4 mA cm −2 ( Figure a–c), respectively. It suggests that the kaolin coating does accelerate the ion mobility during the deposition/stripping process of Zn, [ 26 ] which can be further confirmed by the low charge‐transfer resistance of the EIS results for KL‐Zn. From the surface SEM and EDS measurements of a half kaolin‐coated Zn anode (Figure 2d) after 100 cycles at a current density of 1.8 mA cm −2 , the bare Zn is rough with lots of flakes and patches while the surface of KL‐Zn is neat and flat.…”

Section: Resultsmentioning

confidence: 77%

A Sieve‐Functional and Uniform‐Porous Kaolin Layer toward Stable Zinc Metal Anode

Deng

Xie

Han

et al. 2020

Adv Funct Materials

524

363

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Zinc metal is considered as one of the best anode choices for rechargeable aqueous Zn-based batteries due to its high specific capacity, abundance, and safety. However, dendrite and corrosion issues remain a challenge for this system. Herein, sieve-element function (selective channel of Zn 2+ ) and uniform-pore distribution (≈3.0 nm) of a kaolin-coated Zn anode (KL-Zn) is proposed to alleviate these problems. Based on the artificial Zn metal/electrolyte interface, the KL-Zn anode not only ensures dendritefree deposition and long-time stability (800 h at 1.1 mA h cm −2 ), but also retards side reactions. As a consequence, KL-Zn/MnO 2 batteries can deliver high specific capacity and good capacity retention as well as a reasonably well-preserved morphology (KL-Zn) after 600 cycles at 0.5 A g −1 . This work provides a deep step toward high-performance rechargeable Zn-based battery system.

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Section: Resultsmentioning

confidence: 77%

A Sieve‐Functional and Uniform‐Porous Kaolin Layer toward Stable Zinc Metal Anode

Deng

Xie

Han

et al. 2020

Adv Funct Materials

524

363

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“…Therefore, the 3D hierarchical structure induces uniform Li deposition to inhibit the formation of Li dendrites and improve the electrochemical performance of the batteries. Even compared with reported composite anodes with similar 3D nanosheets lithiophilic layers, the anodes with 3D nanorod arrays show significantly smaller overpotential and superior cyclic stability at different current densities. It can be speculated that the ordered nanorod arrays may be more efficient in homogenizing Li deposition than the nanosheets with relatively random distribution.…”

Section: Resultsmentioning

confidence: 76%

“…In comparison to the lithiophilic layer of 2D overlay‐type, the 3D lithiophilic nanorod arrays provides more Li deposition sites, the rich channels and voids. Even compared with similar 3D lithiophilic skeleton in published works, the synthesis process of the 3DHF host in our work is much simpler, and the length and diameter of nanorods can be controlled by hydrothermal time and temperature. Moreover, the 3DHF−Li exhibits much lower overpotential and better cycle stability.…”

Section: Resultsmentioning

confidence: 93%

“…In order to investigate the interfacial stability of the electrode during cycling, the electrochemical impedance spectroscopy (EIS) measurements of the full cells were conducted (Figure c). The semi‐circle at high frequency (R 1 ) is associated with the interfacial resistance at SEI layer and charge transfer resistance . As both of the cathodes are LiCoO 2 which is stable for hundreds of cycles, the changes in EIS could be reasonably attributed to the differences of the Li anodes surface.…”

Section: Resultsmentioning

confidence: 99%

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Three‐Dimensional Hierarchical Framework Loaded with Lithiophilic Nanorod Arrays for High‐Performance Lithium‐Metal Anodes

Lin

Jian

et al. 2020

ChemElectroChem

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Although the highest theoretical specific capacity and lowest redox potential make lithium metal anodes essential for next‐generation high‐energy batteries, the infinite volume changes and uncontrollable Li dendrites severely restrict their application. Herein, the 3D hierarchical framework (3DHF) loaded with lithiophilic nanorod arrays on interwoven carbon fibers is constructed as a host to stabilize the Li metal anode. With cooperation of the lithiophilicity and the capillary force of the nanorod arrays, molten Li easily wraps the surface of the nanorods to form 3DHF−Li composite anodes. The void spaces and channels among the nanorods may provide a buffer space for Li stripping/plating to relieve the volume changes. In addition, the enlarged specific surface area reduces the local current density to homogenize Li deposition and suppress Li dendrites. The 3DHF−Li anodes exhibit improved cycle stability and rate capability in both symmetric cells and full cells, providing references for the development of Li composite anodes.

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“…Transition metal compounds have been widely used as the heterogeneous seeds on the surface of 3D host to decrease the nucleation barrier and guide the uniform Li nucleation. [ 24,25 ] Up to now, various transition metal oxides (e.g., ZnO, [ 26,27 ] TiO 2 , [ 28 ] Co 3 O 4 , [ 29 ] CuO, [ 30 ] Cu 2 O, [ 31 ] etc. ), transition metal sulfides (Cu 2 S [ 32 ] ), transition metal bromides (CuBr [ 33 ] ), and transition metal nitrides (TiN, [ 23 ] Cu 3 N, [ 34 ] and Ni x N [ 35 ] ) have been extensively investigated to enhance the lithiophilicity of 3D scaffold materials.…”

Section: Introductionmentioning

confidence: 99%

In Situ Growing Chromium Oxynitride Nanoparticles on Carbon Nanofibers to Stabilize Lithium Deposition for Lithium Metal Anodes

Jian

Xiao

Liu

et al. 2020

Small

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To address the dendrite growth and interface instability of high‐capacity Li metal anode, heterogeneous seed‐decorated 3D host materials are expected to suppress the growth of Li dendrites. The physical stability and chemical reactivity of these nanoseeds are the decisive conditions for long cycling lithium metal batteries. Herein, carbon nanofibers decorated with uniform CrO0.78N0.48 nanoparticles (ACrCFs) are synthesized by a novel in situ growing method, where the size, composition, distribution, and migration behavior of these nanoparticles are controlled by the introduction of asphaltene. As the 3D host materials for Li anodes, ACrCFs exhibit an excellent lithiophilicity, a superior mixed ion‐electron conductivity, and abundant electrochemical active sites. Thus, the ACrCF‐modified Li anodes deliver a smooth Li morphology, low nucleation overpotential (10.4 mV), superior cyclic stability with 320 stable cycles (Coulombic efficiency, >98.0%) at 1 mA cm−2, and excellent plating/stripping stability over 1000 h. Notably, no obvious detachment or chalking of these nanoparticles occur during the cycling process. The full cell with LiFePO4 cathode also delivers a better rate capability with more stable cycling performance. The homogeneous CrO0.78N0.48 nanoparticles achieved by this in situ growing method also promise a facile method for the potential applications of transition‐metal oxynitride for high energy density battery systems.

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MOF-derived porous Co3O4-NC nanoflake arrays on carbon fiber cloth as stable hosts for dendrite-free Li metal anodes

Cited by 157 publications

References 48 publications

A Sieve‐Functional and Uniform‐Porous Kaolin Layer toward Stable Zinc Metal Anode

A Sieve‐Functional and Uniform‐Porous Kaolin Layer toward Stable Zinc Metal Anode

Three‐Dimensional Hierarchical Framework Loaded with Lithiophilic Nanorod Arrays for High‐Performance Lithium‐Metal Anodes

In Situ Growing Chromium Oxynitride Nanoparticles on Carbon Nanofibers to Stabilize Lithium Deposition for Lithium Metal Anodes

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