In2O3 nanocrystal–π conjugated molecule hybrid materials for high-capacity anode in lithium ion battery

Pham, Hien Thu; Lee, Don-Sung; Dao, Tung Duy; Jeong, Hyun‐Dam

doi:10.1016/j.jiec.2017.08.003

Cited by 8 publications

(3 citation statements)

References 33 publications

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“…Furthermore, the ability to enable electron/Li + ion transport of the π−π network in π-conjugated molecules would also have contributed to the cycling stability. 32 The CE of Si QD cluster at the current rate of 200 mAh/g reached 80% after the second cycle, with an average of 97% during the 10th−100th cycles. Furthermore, the rate capability of the 4-Bs/Oct Si QD and Si QD clusters was evaluated under various current rates ranging from 200 to 8000 mAh/g, as shown in Figure 5f.…”

Section: ■ Results and Discussionmentioning

confidence: 95%

“…The π-conjugated molecules between Si QDs and on the surface of the Si QD cluster acts as a buffer layer to mitigate the mechanical stresses arising from the alloying reaction of Si with lithium during the extended cycles. Furthermore, the ability to enable electron/Li + ion transport of the π–π network in π-conjugated molecules would also have contributed to the cycling stability . The CE of Si QD cluster at the current rate of 200 mAh/g reached 80% after the second cycle, with an average of 97% during the 10th–100th cycles.…”

Section: Results and Discussionmentioning

confidence: 99%

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Synthesis and Electrochemical Performance of π-Conjugated Molecule Bridged Silicon Quantum Dot Cluster as Anode Material for Lithium-Ion Batteries

et al. 2020

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π-Conjugated molecule bridged silicon quantum dots (Si QDs) cluster was prepared by Sonogashira C−C cross-coupling reaction between 4-bromostyryl and octyl co-capped Si QDs (4-Bs/Oct Si QDs) and 1,4-diethynylbenzene. The surface chemical structure, morphology, and chemical composition of the Si QD cluster were confirmed by Fourier transform infrared spectroscopy, field emission transmission electron microscopy, and energy-dispersive X-ray spectroscopy. Lithiumion batteries were fabricated using 4-Bs/Oct Si QD and Si QD clusters as anode materials to investigate the effect of QD clustering on the electrochemical performance. Compared with the 4-Bs/Oct Si QD electrode, the Si QD cluster exhibits improved electrochemical performance, such as a high initial discharge capacity of ∼1957 mAh/g and good cycling stability with ∼63% capacity retention following 100 cycles at a current rate of 200 mA/g when tested at the voltage window of 0.01−2.5 V. The improved electrochemical performance of the Si QD cluster is attributed to the π-conjugated molecules between the Si QDs and on the surface of Si QD cluster, which serve as a buffer layer to alleviate the mechanical stresses arising from the alloying reaction of Si with lithium and maintain the electrical conduits in the anode system.

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Section: ■ Results and Discussionmentioning

confidence: 95%

Section: Results and Discussionmentioning

confidence: 99%

Synthesis and Electrochemical Performance of π-Conjugated Molecule Bridged Silicon Quantum Dot Cluster as Anode Material for Lithium-Ion Batteries

et al. 2020

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“…Assembly into a hierarchical architecture, with NPs as the basic structural unit, is an efficient strategy for fabricating high-performance porous materials for LIBs. 18,19,24–29 In recent years, NP assemblies have come under the spotlight as high-performance anode materials for LIBs owing to their lower interfacial area compared to that of NPs, which can significantly reduce the interparticle resistance and mitigate the risk of side reactions. 25,26 In addition, their high tap density results in thinner electrodes at the same mass loading, which allows shorter electron pathways and increases the volumetric specific capacity of the whole cell.…”

Section: Introductionmentioning

confidence: 99%

Influence of bridge structure manipulation on the electrochemical performance of π-conjugated molecule-bridged silicon quantum dot nanocomposite anode materials for lithium-ion batteries

et al. 2023

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Ultra‐stable and High‐rate Lithium Ion Batteries Based on Metal–organic Framework‐derived In₂O₃ Nanocrystals/Hierarchically Porous Nitrogen‐doped Carbon Anode

Wang

Zhong

et al. 2020

Energy & Environ Materials

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Exploring electrode materials with attractive specific capacity and prominent cyclic durability is of the essence for promoting lithium ion batteries (LIBs). In2O3 has shown an extraordinary promise for LIBs with advantageous gravimetric capacity (theoretically 965 mA h g−1) and low working voltage. However, In2O3 still suffers from the inherent weaknesses of metal oxides in practical application, especially low conductivity and incorrigible volume expansion upon the cycling process. Here, we demonstrate the architecture of metal–organic framework (MOF)‐derived In2O3 nanocrystals/hierarchically porous nitrogen‐doped carbon composite (In2O3/HPNC) for ultra‐stable LIBs anode. This hierarchically porous structure (micro/meso/macro‐pores) with nitrogen doping not only ensures exceptional mechanical strength and accommodates the volume expansion of In2O3 nanocrystals, but also offers electrons and lithium ions efficient interpenetrating pathways to migrate rapidly during charge/discharge processes. Thus, In2O3/HPNC exhibits excellent cyclic stability with a high specific capacity of 623 mA h g−1 over 2000 cycles at 1000 mA g−1, corresponding to an ultra‐low specific capacity decay of 0.017% per cycle (the best among the In2O3‐based anode for LIBs), and outstanding rate performance, suggesting a critical step toward achieving long‐life and high‐rate LIBs in practical devices.

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In2O3 nanocrystal–π conjugated molecule hybrid materials for high-capacity anode in lithium ion battery

Cited by 8 publications

References 33 publications

Synthesis and Electrochemical Performance of π-Conjugated Molecule Bridged Silicon Quantum Dot Cluster as Anode Material for Lithium-Ion Batteries

Synthesis and Electrochemical Performance of π-Conjugated Molecule Bridged Silicon Quantum Dot Cluster as Anode Material for Lithium-Ion Batteries

Influence of bridge structure manipulation on the electrochemical performance of π-conjugated molecule-bridged silicon quantum dot nanocomposite anode materials for lithium-ion batteries

Ultra‐stable and High‐rate Lithium Ion Batteries Based on Metal–organic Framework‐derived In₂O₃ Nanocrystals/Hierarchically Porous Nitrogen‐doped Carbon Anode

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In2O3 nanocrystal–π conjugated molecule hybrid materials for high-capacity anode in lithium ion battery

Cited by 8 publications

References 33 publications

Synthesis and Electrochemical Performance of π-Conjugated Molecule Bridged Silicon Quantum Dot Cluster as Anode Material for Lithium-Ion Batteries

Synthesis and Electrochemical Performance of π-Conjugated Molecule Bridged Silicon Quantum Dot Cluster as Anode Material for Lithium-Ion Batteries

Influence of bridge structure manipulation on the electrochemical performance of π-conjugated molecule-bridged silicon quantum dot nanocomposite anode materials for lithium-ion batteries

Ultra‐stable and High‐rate Lithium Ion Batteries Based on Metal–organic Framework‐derived In2O3 Nanocrystals/Hierarchically Porous Nitrogen‐doped Carbon Anode

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Ultra‐stable and High‐rate Lithium Ion Batteries Based on Metal–organic Framework‐derived In₂O₃ Nanocrystals/Hierarchically Porous Nitrogen‐doped Carbon Anode