Two dimensional ZIF-derived ultra-thin Cu–N/C nanosheets as high performance oxygen reduction electrocatalysts for high-performance Zn–air batteries

Guan, Yi; Li, Nan; Li, Yongliang; Sun, Lingna; Gao, Yuan; Zhang, Qianling; He, Chuanxin; Liu, Jianhong; Ren, Xiangzhong

doi:10.1039/d0nr03495a

Cited by 37 publications

(18 citation statements)

References 50 publications

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“…2 j, the XPS results were used to validate the structural composition of the CLCS. The common graphic N (399.31 eV), pyrrolic N (399.31 eV), pyridinic N (398.75 eV), and notably the Cu–N site (398.21 eV) are observed in the N 1s spectrum of the CLCS [ 40 – 43 ]. The isolated Raman spectrum of the CLCS displays a high degree of graphitization (Fig.…”

Section: Resultsmentioning

confidence: 99%

Dendrite-Free and Stable Lithium Metal Battery Achieved by a Model of Stepwise Lithium Deposition and Stripping

Liu

Wang

et al. 2021

Nano-Micro Lett.

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Highlights A facile method is adopted to obtain cucumber-like lithiophilic composite skeleton. Massive lithiophilic sites in cucumber-like lithiophilic composite skeleton can promote and guide uniform Li depositions. A unique model of stepwise Li deposition and stripping is determined. Abstract The uncontrolled formation of lithium (Li) dendrites and the unnecessary consumption of electrolyte during the Li plating/stripping process have been major obstacles in developing safe and stable Li metal batteries. Herein, we report a cucumber-like lithiophilic composite skeleton (CLCS) fabricated through a facile oxidation-immersion-reduction method. The stepwise Li deposition and stripping, determined using in situ Raman spectra during the galvanostatic Li charging/discharging process, promote the formation of a dendrite-free Li metal anode. Furthermore, numerous pyridinic N, pyrrolic N, and CuxN sites with excellent lithiophilicity work synergistically to distribute Li ions and suppress the formation of Li dendrites. Owing to these advantages, cells based on CLCS exhibit a high Coulombic efficiency of 97.3% for 700 cycles and an improved lifespan of 2000 h for symmetric cells. The full cells assembled with LiFePO4 (LFP), SeS2 cathodes and CLCS@Li anodes demonstrate high capacities of 110.1 mAh g−1 after 600 cycles at 0.2 A g−1 in CLCS@Li|LFP and 491.8 mAh g−1 after 500 cycles at 1 A g−1 in CLCS@Li|SeS2. The unique design of CLCS may accelerate the application of Li metal anodes in commercial Li metal batteries.

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Section: Resultsmentioning

confidence: 99%

Dendrite-Free and Stable Lithium Metal Battery Achieved by a Model of Stepwise Lithium Deposition and Stripping

Liu

Wang

et al. 2021

Nano-Micro Lett.

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“…It was assumed that their reactivity could not be replaced via base metals. 213 However, recent progress in nanomaterial design has successfully addressed this issue and among a myriad of contemporary novel materials, DHBT-derived Cuf has stood out as an excellent and flexible catalyst for a wide variety of applications, as discussed below.…”

Section: Multifunctional Applications Of Cuf For Clean Energy Technol...mentioning

confidence: 99%

The versatility of the dynamic hydrogen bubble template derived copper foam on the emerging energy applications: progress and future prospects

Das¹,

Biswas²,

Purkait³

et al. 2022

J. Mater. Chem. A

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“…The as-prepared Cu NPs/N-C-800 catalyst exhibits excellent ORR performances in both alkaline and acidic electrolytes, especially featured with a high half-wave of 0.88 V vs reversible hydrogen electrode (RHE), durable stability, and methanol tolerance in 0.1 M KOH. Moreover, the assembled liquid Zn–air battery using Cu NPs/N-C-800 as an air cathode exhibits higher power density (163.5 mW cm –2 ) and superior cycling stability (118 h) than the Pt/C-based counterpart and the analogous Cu-based catalysts. − Meanwhile, the flexible all-solid-state Zn–air battery equipped with Cu NPs/N-C-800 exhibits a superior peak-power density of 43.0 mW cm –2 . Furthermore, the maximum power density of Cu NPs/N-C-800-equipped H 2 –O 2 fuel cell reached 281.5 mW cm –2 .…”

Section: Introductionmentioning

confidence: 99%

Ultrauniformly Dispersed Cu Nanoparticles Embedded in N-Doped Carbon as a Robust Oxygen Electrocatalyst

Kong

Tian

Pei

et al. 2022

ACS Sustainable Chem. Eng.

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Developing high-efficiency and low-cost nonprecious catalysts for the oxygen reduction reaction (ORR) is important but still challenging. Herein, a N-doped carbon catalyst embedded with uniformly dispersed Cu nanoparticles (∼30 nm) is fabricated by the spatial confinement effect of a nitrogen-rich Salen-based covalent organic framework (Salen-COF), in which Cu(II) ions are anchored onto open chelate sites of Salen-COF and isolated by aromatic rings to form uniformly dispersed Cu nanoparticles embedded in N-doped carbon (Cu NPs/N-C) during pyrolysis. The optimized Cu NPs/N-C-800 exhibits high ORR catalytic activity in both alkaline and acidic electrolytes, especially with an onset potential (E onset) of 1.02 V and a half-wave potential (E 1/2) of 0.88 V in an alkaline electrolyte. Attractively, the Cu NPs/N-C-800-derived Zn–air battery demonstrates a higher peak-power density (163.5 mW cm–2) and long-term cycling stability (118 h). The electronic interaction between the highly concentrated homogeneously dispersed Cu NPs and carbon shell results in an appropriate d-band center, and the porous graphitized carbon shell leads to faster electron transfer and mass transport, which are responsible for the high ORR performance of Cu NPs/N-C-800. This strategy provides a new prospect to synthesize uniformly dispersed metal nanoparticle electrocatalysts with more exposed active sites and efficient catalytic activities for renewable energy conversion devices.

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Two dimensional ZIF-derived ultra-thin Cu–N/C nanosheets as high performance oxygen reduction electrocatalysts for high-performance Zn–air batteries

Abstract:
Cu–N–C active sites make a great contribution to the activity of 2D-ZIF derived electrocatalysts.

Cited by 37 publications

References 50 publications

Dendrite-Free and Stable Lithium Metal Battery Achieved by a Model of Stepwise Lithium Deposition and Stripping

Dendrite-Free and Stable Lithium Metal Battery Achieved by a Model of Stepwise Lithium Deposition and Stripping

The versatility of the dynamic hydrogen bubble template derived copper foam on the emerging energy applications: progress and future prospects

Ultrauniformly Dispersed Cu Nanoparticles Embedded in N-Doped Carbon as a Robust Oxygen Electrocatalyst

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Two dimensional ZIF-derived ultra-thin Cu–N/C nanosheets as high performance oxygen reduction electrocatalysts for high-performance Zn–air batteries

Abstract: Cu–N–C active sites make a great contribution to the activity of 2D-ZIF derived electrocatalysts.

Cited by 37 publications

References 50 publications

Dendrite-Free and Stable Lithium Metal Battery Achieved by a Model of Stepwise Lithium Deposition and Stripping

Dendrite-Free and Stable Lithium Metal Battery Achieved by a Model of Stepwise Lithium Deposition and Stripping

The versatility of the dynamic hydrogen bubble template derived copper foam on the emerging energy applications: progress and future prospects

Ultrauniformly Dispersed Cu Nanoparticles Embedded in N-Doped Carbon as a Robust Oxygen Electrocatalyst

Contact Info

Product

Resources

About

Abstract:
Cu–N–C active sites make a great contribution to the activity of 2D-ZIF derived electrocatalysts.