Electrochemical properties of polydopamine coated Ti-Si alloy anodes for Li-ion batteries

Lee, Jisun; Shin, Min-Seon; Lee, Sung-Man

doi:10.1016/j.electacta.2016.11.094

Cited by 15 publications

(3 citation statements)

References 53 publications

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“…Correspondingly, the most applicable technologies would resort to the morphology of Si nanoparticles. Therefore, except to engineering the size of the Si particles, other useful approaches including core–shell structures (Si/SiO 2 /C), yolk (Si)–shell (C) structures, surface modification by creating a thin carbon layer of C on Si, Si–carbon composite, − Si–graphene composite, , and Si–metal alloy − have been attempted to overcome the aforementioned issues.…”

Section: Introductionmentioning

confidence: 99%

Enhanced Capacity and Cyclability of Si@NiSi₂ Nanocomposite Anodes Fabricated by Facile Electroless Ni Plating

Brahma

Liu

2022

J. Phys. Chem. C

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Although silicon (Si) has been proposed as the most promising anode material in lithium-ion batteries due to their high capacity (∼4000 mA h g −1 ), the poor cyclability resulting from the strain-induced pulverization caused by the severe volume change during charge/discharge hinders the industrial applications. Here, Si nanoparticles were conformally coated with either Ni, NiO, or NiSi 2 to suppress the tremendous volume change of Si, hence leading to prolonging the cycle life of the Si anode to a different degree. Both Si@Ni and Si@NiO nanocomposites were synthesized by one-step self-reducing (SR) electroless nickel plating without/with heat treatment, respectively, whereas Si@NiSi 2 nanocomposites were obtained by a two-step (SR + electroless nickel deposition, EN) process, followed by heat treatment. Among all these three nanocomposite anodes, Si@NiSi 2 prepared by 5 min of SR, 30 min of EN, and 400 °C annealing in sequence achieved the highest capacity of ∼1390 mA h g −1 and the best capacity retention of ∼86.6% with a Coulombic efficiency of 99% over 70 cycles. For comparison, the capacity retention of the Si@Ni and Si@NiO electrode over 70 cycles is estimated to be ∼67 and 75%, respectively. These results suggest that NiSi 2 could be a promising protective coating layer to effectively buffer the volume change of Si and promote the battery life.

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Section: Introductionmentioning

confidence: 99%

Enhanced Capacity and Cyclability of Si@NiSi₂ Nanocomposite Anodes Fabricated by Facile Electroless Ni Plating

Brahma

Liu

2022

J. Phys. Chem. C

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“…To overcome these drawbacks, embedding the capacitive elements in a metallic matrix able to provide good electronic conductivity and to hold the volume changes is a beneficial solution [ 22 ]. This can be done with binary compounds having one element reacting with Li when the other one remains inactive, like for Ni 3 Sn 4 [ 23 , 24 , 25 ], Cu 6 Sn 5 [ 26 ], CoSn 2 [ 27 ], FeSn 2 [ 12 ], NiSi 2 [ 28 ] or TiSi 2 [ 29 ].…”

Section: Introductionmentioning

confidence: 99%

Impact of Surface Chemistry of Silicon Nanoparticles on the Structural and Electrochemical Properties of Si/Ni3.4Sn4 Composite Anode for Li-Ion Batteries

et al. 2020

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Embedding silicon nanoparticles in an intermetallic matrix is a promising strategy to produce remarkable bulk anode materials for lithium-ion (Li-ion) batteries with low potential, high electrochemical capacity and good cycling stability. These composite materials can be synthetized at a large scale using mechanical milling. However, for Si-Ni3Sn4 composites, milling also induces a chemical reaction between the two components leading to the formation of free Sn and NiSi2, which is detrimental to the performance of the electrode. To prevent this reaction, a modification of the surface chemistry of the silicon has been undertaken. Si nanoparticles coated with a surface layer of either carbon or oxide were used instead of pure silicon. The influence of the coating on the composition, (micro)structure and electrochemical properties of Si-Ni3Sn4 composites is studied and compared with that of pure Si. Si coating strongly reduces the reaction between Si and Ni3Sn4 during milling. Moreover, contrary to pure silicon, Si-coated composites have a plate-like morphology in which the surface-modified silicon particles are surrounded by a nanostructured, Ni3Sn4-based matrix leading to smooth potential profiles during electrochemical cycling. The chemical homogeneity of the matrix is more uniform for carbon-coated than for oxygen-coated silicon. As a consequence, different electrochemical behaviors are obtained depending on the surface chemistry, with better lithiation properties for the carbon-covered silicon able to deliver over 500 mAh/g for at least 400 cycles.

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“…The PDA-modified separators can improve the wetting ability, the electrolyte uptake, and the ionic conductivity. PDA has been used to modify the sulfur cathode in Li/S battery and CuO, SnO 2 , Si, and Ti–Si alloy anode materials for lithium-ion batteries. − PDA coating layer can effectively improve their electrochemical performances.…”

Section: Introductionmentioning

confidence: 99%

Biomimetic Synthesis of Polydopamine Coated ZnFe₂O₄ Composites as Anode Materials for Lithium-Ion Batteries

Yue

Wang³

et al. 2018

ACS Omega

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Metal oxides as anode materials for lithium storage suffer from poor cycling stability due to their conversion mechanisms. Here, we report an efficient biomimetic method to fabricate a conformal coating of conductive polymer on ZnFe2O4 nanoparticles, which shows outstanding electrochemical performance as anode material for lithium storage. Polydopamine (PDA) film, a bionic ionic permeable film, was successfully coated on the surfaces of ZnFe2O4 particles by the self-polymerization of dopamine in the presence of an alkaline buffer solution. The thickness of PDA coating layer was tunable by controlling the reaction time, and the obtained ZnFe2O4/PDA sample with 8 nm coating layer exhibited an outstanding electrochemical performance in terms of cycling stability and rate capability. ZnFe2O4/PDA composites delivered an initial discharge capacity of 2079 mAh g–1 at 1 A g–1 and showed a minimum capacity decay after 150 cycles. Importantly, the coating layer improved the rate capability of composites compared to that of its counterpart, the bare ZnFe2O4 particle materials. The outstanding electrochemical performance was because of the buffering and protective effects of the PDA coating layer, which could be a general protection strategy for electrode materials in lithium-ion batteries.

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Electrochemical properties of polydopamine coated Ti-Si alloy anodes for Li-ion batteries

Cited by 15 publications

References 53 publications

Enhanced Capacity and Cyclability of Si@NiSi₂ Nanocomposite Anodes Fabricated by Facile Electroless Ni Plating

Enhanced Capacity and Cyclability of Si@NiSi₂ Nanocomposite Anodes Fabricated by Facile Electroless Ni Plating

Impact of Surface Chemistry of Silicon Nanoparticles on the Structural and Electrochemical Properties of Si/Ni3.4Sn4 Composite Anode for Li-Ion Batteries

Biomimetic Synthesis of Polydopamine Coated ZnFe₂O₄ Composites as Anode Materials for Lithium-Ion Batteries

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Electrochemical properties of polydopamine coated Ti-Si alloy anodes for Li-ion batteries

Cited by 15 publications

References 53 publications

Enhanced Capacity and Cyclability of Si@NiSi2 Nanocomposite Anodes Fabricated by Facile Electroless Ni Plating

Enhanced Capacity and Cyclability of Si@NiSi2 Nanocomposite Anodes Fabricated by Facile Electroless Ni Plating

Impact of Surface Chemistry of Silicon Nanoparticles on the Structural and Electrochemical Properties of Si/Ni3.4Sn4 Composite Anode for Li-Ion Batteries

Biomimetic Synthesis of Polydopamine Coated ZnFe2O4 Composites as Anode Materials for Lithium-Ion Batteries

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Enhanced Capacity and Cyclability of Si@NiSi₂ Nanocomposite Anodes Fabricated by Facile Electroless Ni Plating

Enhanced Capacity and Cyclability of Si@NiSi₂ Nanocomposite Anodes Fabricated by Facile Electroless Ni Plating

Biomimetic Synthesis of Polydopamine Coated ZnFe₂O₄ Composites as Anode Materials for Lithium-Ion Batteries