CuO nano hexagons, an efficient energy storage material for Li- ion battery application

Subalakshmi, P.; Sivashanmugam, A.

doi:10.1016/j.jallcom.2016.08.157

Cited by 99 publications

(28 citation statements)

References 55 publications

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“…We consider the sequential reduction of each active material to be capable of promoting overall conductivity, and therefore enhance the electrochemical reactivity during each reaction . The anodic scan profile (charge direction) in Co 2 Cu 1 @TNAs shows two peaks located at 1.65 and 2.13 V, which correspond to the multi‐step oxidation of Co to Co 3 O 4 and Cu to CuO, accompanied by the decomposition of Li 2 O . The peak at 2.52 V in Cu@TNAs in particular is merged with the sharp peak at 2.10 V of Co@TNAs, forming a broad peak at 2.13 V in Co 2 Cu 1 @TNAs.…”

Section: Resultsmentioning

confidence: 99%

Fast‐Charging and High Volumetric Capacity Anode Based on Co₃O₄/CuO@TiO₂ Composites for Lithium‐Ion Batteries

Kim

Lee

Choi

2018

Chemistry A European J

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This paper presents an investigation of anodic TiO2 nanotube arrays (TNAs), with a Co3O4/CuO coating, for lithium‐ion batteries (LIBs). The coated TNAs are investigated using various analytical techniques, with the results clearly suggesting that the molar ratio of Co3O4/CuO in the TiO2 nanotubes substantially influences its battery performance. In particular, a cobalt/copper molar ratio of 2:1 on the TNAs (Co2Cu1@TNAs) features the best LIBs anode performance, exhibiting high reversible capacity and enhanced cycling stability. Noticeably, Co2Cu1@TNAs achieve excellent rate capability even after quite a high current density of 20.0 A g−1 (≈25 C, where C corresponds to complete discharge in 1 h) and superior volumetric reversible capacity of ≈3330 mA h−1 cm−3. This value is approximately seven times higher than those of a graphite‐based anode. This outstanding performance is attributed to the synergistic effects of Co2Cu1@TNAs: 1) the structural advantage of TNAs, with their large amount of free space to accommodate the large volume expansion during Li+ insertion/extraction and 2) the optimized ratio of Co3O4 and CuO in the composite for improved capacity. In addition, no binder or conductive agent is used, which is partly responsible for the overall improved volumetric capacity and electrochemical performance.

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Section: Resultsmentioning

confidence: 99%

Fast‐Charging and High Volumetric Capacity Anode Based on Co₃O₄/CuO@TiO₂ Composites for Lithium‐Ion Batteries

Kim

Lee

Choi

2018

Chemistry A European J

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“…However, poor long‐term cycling is often observed, and also capacities beyond the conversion reaction or capacity raise phenomena play a minor role for CuO based electrodes (Table ). This electrochemical behavior is attributed to the poor electronic conductivity and large volume changes (∼174 %) during repetitive lithiation/delithiation ,. In addition, it was suggested that CuO is not the end‐product after recharging under particular conditions.…”

Section: Interfacial Phenomena and Additional Capacities For Nano‐sizmentioning

confidence: 99%

“…This electrochemical behavior is attributed to the poor electronic conductivity and large volume changes (~174 %) during repetitive lithiation/delithiation. [147,148] In addition, it was suggested that CuO is not the end-product after recharging under particular conditions. Martin et al applied XPS to investigate the redox mechanism during lithiation/delithiation of CuO thin films.…”

Section: Chromium-oxide-based Electrodesmentioning

confidence: 99%

Interfacial Phenomena/Capacities Beyond Conversion Reaction Occurring in Nano‐sized Transition‐Metal‐Oxide‐Based Negative Electrodes in Lithium‐Ion Batteries: A Review

Keppeler

Srinivasan

2017

ChemElectroChem

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Nano‐sized transition‐metal oxides are of topical interest in current research towards high‐capacity negative electrodes for rechargeable lithium‐ion batteries. Schematically, an interaction with Li+ through a conversion reaction is commonly accepted. However, experimentally observed capacities often significantly exceed the correlating theoretical quantity of transferred charge carriers based on the conversion reaction. The origin of the additional capacity is under intense debate, although the indispensability of interfacial phenomena and material dimensions in the nanometer regime for concrete explanations are widely observed. Scenarios associated with additional capacities are electrode/electrolyte interphases (solid‐electrolyte interphase, polymer/gel‐like film), additional Li+ accommodation through reaction with grain boundary phases in nanostructures, interfacial Li+ accommodation along with charge separation at phase boundaries, or additional Li+ uptake in unique structural architectures with high specific surface areas that often exhibit an extensive hierarchical meso‐ and/or nanoporous system. In addition, interfacial phenomena are strongly related to battery safety, and hence a topic of highest relevance. As the number of related articles has become so intense, this Review article provides an up‐to‐date summary, and a first attempt is made to systematically classify capacity profiles of nano‐sized transition‐metal oxides that exhibit additional capacities beyond the theoretical value based on the concept of conversion reaction.

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“…Many efforts have been devoted to addressing the pressing issues of the CuO based anodes, such as improving the electrical conductivety of the CuO anode by forming a uniform conducting network in electrodes . Also, construction of nanoscaled CuO particles alleviates the volume change and thereby improves the long‐term performance …”

Section: Introductionmentioning

confidence: 99%

Epoxy Resin Enables Facile Scalable Synthesis of CuO/C Nanohybrid Lithium‐Ion Battery Anode with Enhanced Electrochemical Performance

Meng

Cheng

et al. 2020

ChemistrySelect

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CuO based anodes hold a promise alternative to the commercial graphite due to their high reversible capacities, low cost, and environmental friendliness. However, drastic volume change, partial irreversibility, and poor electron conductivity yields compromised the electrochemical performance including reversible capacities, cyclic stability and rate performance. A facile scalable method is developed to synthesize CuO/C nanohybrid lithium-ion battery anode. Copper nanoparticles are synthesized in situ using the amine based curing agent as both coordination ligand and reducing agent. The copper nanoparticles/amine based curing agent further reacts with the epoxy resin monomers, where the copper nanoparticles are incorporated into the thermosetting polymer network. Due to thermosetting nature of the epoxy polymer, agglomeration of the copper nanoparticles is effectively suppressed during the carbonization process, which are further converted to the CuO nanoparticles within the carbon matrix through heat treatment in air. Systematic structure and electrochemical performance characterizations are carefully studied. The results show that both the reversible capacities are effectively improved in comparision with the bare carbon sample. Moreover, excellent cyclic stability and high rate capability are also demonstrated by the CuO/C nanohybrid.[a] L.

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CuO nano hexagons, an efficient energy storage material for Li- ion battery application

Cited by 99 publications

References 55 publications

Fast‐Charging and High Volumetric Capacity Anode Based on Co₃O₄/CuO@TiO₂ Composites for Lithium‐Ion Batteries

Fast‐Charging and High Volumetric Capacity Anode Based on Co₃O₄/CuO@TiO₂ Composites for Lithium‐Ion Batteries

Interfacial Phenomena/Capacities Beyond Conversion Reaction Occurring in Nano‐sized Transition‐Metal‐Oxide‐Based Negative Electrodes in Lithium‐Ion Batteries: A Review

Epoxy Resin Enables Facile Scalable Synthesis of CuO/C Nanohybrid Lithium‐Ion Battery Anode with Enhanced Electrochemical Performance

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CuO nano hexagons, an efficient energy storage material for Li- ion battery application

Cited by 99 publications

References 55 publications

Fast‐Charging and High Volumetric Capacity Anode Based on Co3O4/CuO@TiO2 Composites for Lithium‐Ion Batteries

Fast‐Charging and High Volumetric Capacity Anode Based on Co3O4/CuO@TiO2 Composites for Lithium‐Ion Batteries

Interfacial Phenomena/Capacities Beyond Conversion Reaction Occurring in Nano‐sized Transition‐Metal‐Oxide‐Based Negative Electrodes in Lithium‐Ion Batteries: A Review

Epoxy Resin Enables Facile Scalable Synthesis of CuO/C Nanohybrid Lithium‐Ion Battery Anode with Enhanced Electrochemical Performance

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Fast‐Charging and High Volumetric Capacity Anode Based on Co₃O₄/CuO@TiO₂ Composites for Lithium‐Ion Batteries

Fast‐Charging and High Volumetric Capacity Anode Based on Co₃O₄/CuO@TiO₂ Composites for Lithium‐Ion Batteries