High-defect hydrophilic carbon cuboids anchored with Co/CoO nanoparticles as highly efficient and ultra-stable lithium-ion battery anodes

Sun, Xiaolei; Hao, Guang‐Ping; Lu, Xueyi; Xi, Lixia; Liu, Bo; Si, Wenping; Ma, Chuansheng; Liu, Qiming; Zhang, Qiang; Kaskel, Stefan; Schmidt, Oliver G.

doi:10.1039/c6ta03098j

Cited by 185 publications

(108 citation statements)

References 48 publications

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“…The final PtPb nanoplates in the sample chamber subjected to 3 MeV C + ion irradiation were modified through partial atomic rearrangement due to the interactions between energetic ions and atoms. The incident ions (3 MeV C + ) pass entirely through the sample with almost no residual concentration (Figures S1 and S2, Supporting Information), which could make the influence of residual carbons on catalysis be ignored . Figure b shows the typical transmission electron microscopy (TEM) image of pristine Pt 64 Pb 36 nanoplates.…”

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Defects and Interfaces on PtPb Nanoplates Boost Fuel Cell Electrocatalysis

Sun

Liang

Luo

et al. 2017

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Nanostructured Pt is the most efficient single-metal catalyst for fuel cell technology. Great efforts have been devoted to optimizing the Pt-based alloy nanocrystals with desired structure, composition, and shape for boosting the electrocatalytic activity. However, these well-known controls still show the limited ability in maximizing the Pt utilization efficiency for achieving more efficient fuel cell catalysis. Herein, a new strategy for maximizing the fuel cell catalysis by controlling/tuning the defects and interfaces of PtPb nanoplates using ion irradiation technique is reported. The defects and interfaces on PtPb nanoplates, controlled by the fluence of incident C ions, make them exhibit the volcano-like electrocatalytic activity for methanol oxidation reaction (MOR), ethanol oxidation reaction (EOR), and oxygen reduction reaction (ORR) as a function of ion irradiation fluence. The optimized PtPb nanoplates with the mixed structure of dislocations, subgrain boundaries, and small amorphous domains are the most active for MOR, EOR, and ORR. They can also maintain high catalytic stability in acid solution. This work highlights the impact and significance of inducing/controlling the defects and interfaces on Pt-based nanocrystals toward maximizing the catalytic performance by advanced ion irradiation strategy.

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Defects and Interfaces on PtPb Nanoplates Boost Fuel Cell Electrocatalysis

Sun

Liang

Luo

et al. 2017

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“…[1][2][3][4][5][6][7][8][9][10][11][12][13][14] For example, the most promising Li metal-based battery technologies such as lithium-sulphur and lithium-air batteries have not been successfully commercialized mainly because of the uncontrolled growth of lithium microstructures (LmSs) such as dendrites, fibers, whiskers, moss, etc., which can cause internal short circuit (ISC) of a cell and result in catastrophic fires or even explosions. [15][16][17] Recent field incidents such as fires on a Boeing 787 Dreamliner flight and in a Tesla electric vehicle (EV) or even in the Samsung Note 7 smartphone are believed to be closely linked to ISCs in LIBs.…”

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Study of the Mechanisms of Internal Short Circuit in a Li/Li Cell by Synchrotron X-ray Phase Contrast Tomography

et al. 2016

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Knowledge about degradation and failure of Li-ion batteries (LIBs) is of paramount importance especially because failure can be accompanied by severe hazards. To contribute to the understanding of such phenomena synchrotron in-line phase contrast Xray tomography was employed to investigate internal cell deformation and degradation caused by an internal short circuit (ISC). The tomographic images taken from an uncycled Li/Li cell and a short-circuited Li/Li cell reveal how lithium microstructures (LmS) develop during electrochemical stripping and plating during discharge and charge and how the three-layer separator used is damaged by growing LmSs and delaminates and melts as a consequence of an ISC. Previously unknown insights into the internal cell degradation and deformation mechanisms caused by an ISC are obtained and provide hints of how the properties of the separator could be modified in order to improve the reliability and safety of current and next-generation LIBs.

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“…23-0369) [13] with no impurity phases observed. [14] The presence of graphitic carbon (G-band) in the carbon sample should enable rapid electron transfer. [14] The presence of graphitic carbon (G-band) in the carbon sample should enable rapid electron transfer.…”

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confidence: 90%

Honeycomb‐Like Nitrogen‐Doped Carbon 3D Nanoweb@Li₂S Cathode Material for Use in Lithium Sulfur Batteries

et al. 2019

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High-defect hydrophilic carbon cuboids anchored with Co/CoO nanoparticles as highly efficient and ultra-stable lithium-ion battery anodes

Abstract: High-defect hydrophilic porous carbon cuboids with tightly anchored Co/CoO nanoparticles are rationally fabricated as ultra-stable anodes for lithium-ion batteries over 10 000 cycles.

Cited by 185 publications

References 48 publications

Defects and Interfaces on PtPb Nanoplates Boost Fuel Cell Electrocatalysis

Defects and Interfaces on PtPb Nanoplates Boost Fuel Cell Electrocatalysis

Study of the Mechanisms of Internal Short Circuit in a Li/Li Cell by Synchrotron X-ray Phase Contrast Tomography

Honeycomb‐Like Nitrogen‐Doped Carbon 3D Nanoweb@Li₂S Cathode Material for Use in Lithium Sulfur Batteries

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High-defect hydrophilic carbon cuboids anchored with Co/CoO nanoparticles as highly efficient and ultra-stable lithium-ion battery anodes

Abstract: High-defect hydrophilic porous carbon cuboids with tightly anchored Co/CoO nanoparticles are rationally fabricated as ultra-stable anodes for lithium-ion batteries over 10 000 cycles.

Cited by 185 publications

References 48 publications

Defects and Interfaces on PtPb Nanoplates Boost Fuel Cell Electrocatalysis

Defects and Interfaces on PtPb Nanoplates Boost Fuel Cell Electrocatalysis

Study of the Mechanisms of Internal Short Circuit in a Li/Li Cell by Synchrotron X-ray Phase Contrast Tomography

Honeycomb‐Like Nitrogen‐Doped Carbon 3D Nanoweb@Li2S Cathode Material for Use in Lithium Sulfur Batteries

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Honeycomb‐Like Nitrogen‐Doped Carbon 3D Nanoweb@Li₂S Cathode Material for Use in Lithium Sulfur Batteries