Pomegranate-like gallium oxide nanospheres coated with nitrogen-doped carbon as an anode for lithium-ion batteries with an ultra-long cycle life

Yu, Jiayu; Xiong, Gangyi; Yin, Shuai; Guan, Xianggang; Zhou, Heliang; Xia, Jun; Yang, Yang; Zhang, Shichao; Xing, Yalan; Yang, Puheng

doi:10.1016/j.jallcom.2022.168038

Cited by 5 publications

(7 citation statements)

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“…In this aspect, related studies demonstrated the increase in cycle stability by embedding samples with reduced graphene oxide or N‐doped carbon shells to prevent the Ga from aggregation during the cycling process and enhance electric conductivity. [ 69,70 ] SEM post‐mortem analyses (see Figure S5, Supporting Information) still show hollow structures comparable to the initial tetrapodal shaped microstructures (cf. Figure 3) after 65 cycles, but indicate degradation of the material.…”

Section: Resultsmentioning

confidence: 86%

Synthesis and Nanostructure Investigation of Hybrid β‐Ga₂O₃/ZnGa₂O₄ Nanocomposite Networks with Narrow‐Band Green Luminescence and High Initial Electrochemical Capacity

Wolff

Braniste

Krüger

et al. 2023

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The material design of functional “aero”‐networks offers a facile approach to optical, catalytical, or and electrochemical applications based on multiscale morphologies, high large reactive area, and prominent material diversity. Here in this paper, the synthesis and structural characterization of a hybrid β‐Ga2O3/ZnGa2O4 nanocomposite aero‐network are presented. The nanocomposite networks are studied on multiscale with respect to their micro‐ and nanostructure by X‐ray diffraction (XRD) and transmission electron microscopy (TEM) and are characterized for their photoluminescent response to UV light excitation and their electrochemical performance with Li‐ion conversion reaction. The structural investigations reveal the simultaneous transformation of the precursor aero‐GaN(ZnO) network into hollow architectures composed of β‐Ga2O3 and ZnGa2O4 nanocrystals with a phase ratio of ≈1:2. The photoluminescence of hybrid aero‐β‐Ga2O3/ZnGa2O4 nanocomposite networks demonstrates narrow band (λem = 504 nm) green light emission of ZnGa2O4 under UV light excitation (λex = 300 nm). The evaluation of the metal‐oxide network performance for electrochemical application for Li‐ion batteries shows high initial capacities of ≈714 mAh g−1 at 100 mA g−1 paired with exceptional rate performance even at high current densities of 4 A g−1 with 347 mAh g−1. This study provides is an exciting showcase example of novel networked materials and demonstrates the opportunities of tailored micro‐/nanostructures for diverse applications a diversity of possible applications.

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Section: Resultsmentioning

confidence: 86%

Synthesis and Nanostructure Investigation of Hybrid β‐Ga₂O₃/ZnGa₂O₄ Nanocomposite Networks with Narrow‐Band Green Luminescence and High Initial Electrochemical Capacity

Wolff

Braniste

Krüger

et al. 2023

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“…The GITT result indicates that Li 3 VO 4 -Ga 2 O 3 @PCNF has excellent electrochemical reaction kinetics, which could be ascribed to the heterointerfaces of Li 3 VO 4 and Ga 2 O 3 . 38,57,58 To further elucidate the impact of Li 3 VO 4 -Ga 2 O 3 @PCNF performance and its underlying mechanism, we analyzed Fig. 5(a)-(f), which depict the pseudocapacitance contribution at different scan rates.…”

Section: Resultsmentioning

confidence: 99%

“…1(f)) displayed a peak at 21.6 eV, consistent with the binding energy of Ga–O bond, confirming the presence of Ga 2 O 3 . 38 A peak observed at 20.2 eV corresponds to the Ga–N bond, 39 while the peak centered at 24.2 eV represents the O 2s orbital. 40 The N 1s spectrum (Fig.…”

Section: Resultsmentioning

confidence: 99%

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Heterostructured Li₃VO₄–Ga₂O₃-embedded porous carbon nanofibers as advanced anode materials for lithium-ion batteries

Chen,

Pei,

Yang

et al. 2023

Phys. Chem. Chem. Phys.

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“…[ 10 ] The Ga 2p spectrum (Figure 2d), it is deconvoluted into two typical peaks, Ga 2p 3/2 (1118.9 eV for Ga 3+ and 1117.8 eV for Ga 0 ) and Ga 2p 1/2 (1145.7 eV for Ga 3+ and 1144.6 eV for Ga 0 ). [ 9b,11 ] Figure 2e shows the In 3d spectrum, and the peaks at 444.0 eV (451.4 eV) and 445.4 eV (452.8 eV), indicating the existence of In 0 and In 3+ , respectively. [ 9d,12 ] Additionally, Figure 2f shows the N 1s spectrum (the presence of small amounts of N in PVP precursors), which can also be deconvoluted into two peaks at 395.18 and 398.3 eV, corresponding to Ga LMMb (metallic Ga peak) and pyrrolic N, respectively.…”

Section: Results Ans Discussionmentioning

confidence: 99%

Alkali‐Ion Batteries by Carbon Encapsulation of Liquid Metal Anode

Huang,

Guo,

Wang

et al. 2023

Advanced Materials

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Gallium‐based metallic liquids, exhibiting high theoretical capacity, are considered a promising anode material for room‐temperature liquid metal alkali‐ion batteries. However, electrochemical performances, especially the cyclic stability, of the liquid metal anode for alkali‐ion batteries are strongly limited because of the volume expansion and unstable solid electrolyte interphase film of liquid metal. Here, the bottleneck problem is resolved by designing carbon encapsulation on gallium‐indium liquid metal nanoparticles (EGaIn@C LMNPs). A superior cycling stability (644 mAh g−1 after 800 cycles at 1.0 A g−1) is demonstrated for lithium‐ion batteries, and excellent cycle stability (87 mAh g−1 after 2500 cycles at 1.0 A g−1, 82.3% capacity retention) is achieved for sodium‐ion batteries by carbon encapsulation of the liquid metal anode. Morphological and phase changes of EGaIn@C LMNPs during the electrochemical reaction process are revealed by in‐situ transmission electron microscopy measurements in real time. The origin for the excellent performance is uncovered, i.e., the EGaIn@C core‐shell structure effectively suppresses the non‐uniform volume expansion of LMNPs from about 160% to 127%, improves the electrical conductivity of the LMNPs, and exhibits superior electrochemical kinetics and a self‐healing phenomenon. This work paves the way for the applications of room‐temperature liquid metal anodes for high performance alkali‐ion batteries.This article is protected by copyright. All rights reserved

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Pomegranate-like gallium oxide nanospheres coated with nitrogen-doped carbon as an anode for lithium-ion batteries with an ultra-long cycle life

Cited by 5 publications

References 47 publications

Synthesis and Nanostructure Investigation of Hybrid β‐Ga₂O₃/ZnGa₂O₄ Nanocomposite Networks with Narrow‐Band Green Luminescence and High Initial Electrochemical Capacity

Synthesis and Nanostructure Investigation of Hybrid β‐Ga₂O₃/ZnGa₂O₄ Nanocomposite Networks with Narrow‐Band Green Luminescence and High Initial Electrochemical Capacity

Heterostructured Li₃VO₄–Ga₂O₃-embedded porous carbon nanofibers as advanced anode materials for lithium-ion batteries

Alkali‐Ion Batteries by Carbon Encapsulation of Liquid Metal Anode

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Pomegranate-like gallium oxide nanospheres coated with nitrogen-doped carbon as an anode for lithium-ion batteries with an ultra-long cycle life

Cited by 5 publications

References 47 publications

Synthesis and Nanostructure Investigation of Hybrid β‐Ga2O3/ZnGa2O4 Nanocomposite Networks with Narrow‐Band Green Luminescence and High Initial Electrochemical Capacity

Synthesis and Nanostructure Investigation of Hybrid β‐Ga2O3/ZnGa2O4 Nanocomposite Networks with Narrow‐Band Green Luminescence and High Initial Electrochemical Capacity

Heterostructured Li3VO4–Ga2O3-embedded porous carbon nanofibers as advanced anode materials for lithium-ion batteries

Alkali‐Ion Batteries by Carbon Encapsulation of Liquid Metal Anode

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Synthesis and Nanostructure Investigation of Hybrid β‐Ga₂O₃/ZnGa₂O₄ Nanocomposite Networks with Narrow‐Band Green Luminescence and High Initial Electrochemical Capacity

Synthesis and Nanostructure Investigation of Hybrid β‐Ga₂O₃/ZnGa₂O₄ Nanocomposite Networks with Narrow‐Band Green Luminescence and High Initial Electrochemical Capacity

Heterostructured Li₃VO₄–Ga₂O₃-embedded porous carbon nanofibers as advanced anode materials for lithium-ion batteries