Shape-controlled porous carbon from calcium citrate precursor and their intriguing application in lithium-ion batteries

Gao, Yang; Li, Junfeng; Liu, Yuqing; Zhong, Liangzhao; Shu, Chaozhu; Yue, Bo; Zhang, Wentao

doi:10.1007/s11581-017-2089-7

Cited by 12 publications

(4 citation statements)

References 52 publications

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“…In the first cycle, the peak emerged at ∼0.01 V was attributed to the intercalation of Li + ions in NDC-TF or NDC-MW. 46,47 For both samples, the CV curves of the first cycles were different from those of the subsequent cycles, indicating a large amount of irreversible capacity. [48][49][50] However, the CV curves of NDC-MW almost overlapped from the 2 nd cycle onward, indicating the formation of stable SEI films and superior reversibility of NDC-MW.…”

Section: Resultsmentioning

confidence: 97%

Microwave Modification of N-Doped Carbon for High Performance Lithium-Ion Batteries

Meng¹,

Xiao²,

Wang³

et al. 2017

J. Electrochem. Soc.

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In this work, the modification effect of microwave irradiation on the surface functional groups and electrochemical properties of N-doped carbon (NDC) was investigated. The microwave irradiation generated a large number of edge defects and thus many pyridinic and pyrrolic N on the surface of NDC, which served as the active sites for Li + ions adsorption. The microwave irradiation also led to the decomposition of the hydroxyl functional groups on the surface of NDC, which were beneficial to the formation of a more stable and conductive solid electrolyte interface (SEI) film on the surface of NDC. Therefore, the microwave modified NDC delivered a high specific capacity of 613.5 mAh g −1 after 50 cycles at 0.1 C and excellent rate performance when used as anode material of lithium ion battery.

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Section: Resultsmentioning

confidence: 97%

Microwave Modification of N-Doped Carbon for High Performance Lithium-Ion Batteries

Meng¹,

Xiao²,

Wang³

et al. 2017

J. Electrochem. Soc.

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“…Step II (272–477 °C) involves the melting of zinc citrate and subsequent decomposition of Zn 3 (C 6 H 5 O 7 ) 2 as well as the production of ZnCO 3 , carbonized products, and some gases such as CO and CH 4 . In step III, ZnCO 3 decomposes into ZnO and CO 2 and the weight loss of zinc citrate is ≈55.22% . Figure b shows the XRD pattern of ZnO/porous carbon microspheres.…”

Section: Resultsmentioning

confidence: 99%

In Situ Synthesis of ZnO/Porous Carbon Microspheres and Their High Performance for Lithium‐Ion Batteries

Gao

Lai

et al. 2019

Physica Status Solidi (a)

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The applications of ZnO anode material in lithium-ion batteries are limited due to its large volume changes and low electric conductivity in dischargecharge cycles. In the study, the molecular-level design is employed to develop a novel ZnO/porous carbon composite structure. With zinc citrate as the precursor, ZnO/porous carbon microspheres self-assembled by nanosheets are successfully synthesized according to the carbonization method. ZnO particles with the size of 10-30 nm are uniformly dispersed inside porous carbon, which acts as a buffer layer. As the anode material, ZnO/porous carbon microspheres exhibit excellent cycle capacity (557 mAh g À1 at 100 mA g À1 ) and rate performance (304 mAh g À1 at 1 A g À1 ). The as-prepared ZnO/porous carbon microspheres not only guarantee the structural integrity of electrode, but also directly solve the problem of capacity fading. The in situ composite structure may endow ZnO/porous carbon microspheres with wide application potentials in lithium-ion batteries. The study may also pave a new way to design high-performance anode materials for lithium-ion batteries at the molecular scale.

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“…To solve the problem of low energy density, it is necessary to develop next-generation LIBs with higher specific capacities. As a result, various carbon-based materials such as graphene [7], carbon microspheres [8], carbon nanotubes [9], porous carbon [10], and carbon nanofibers [11], have been proposed as alternative anode candidates. Among these materials, carbon nanofibers are considered as one of the most promising candidates due to their continuous and interconnected structure.…”

Section: Introductionmentioning

confidence: 99%

Cu-supported nitrogen-doped carbon nanofibers with hierarchical three-dimensional net structure as binder-free anodes for enhanced lithium-ion batteries

Gao

Wang

et al. 2019

Nanotechnology

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Cu-supported nitrogen-doped carbon nanofibers (NCNFs) were fabricated via electrospinning and subsequent activation treatment with poly vinylpyrrolidone as both carbon and nitrogen sources. The NCNFs are firmly adhered to Cu foil without any additional binder and form a hierarchical three-dimensional net structure, which could effectively shorten the diffusion paths for electrons and lithium ions, thus resulting in lower impedance and superior electrochemical properties. Additionally, NCNFs feature a amorphous carbon structure, N-rich carbon lattice and wide pore distribution, not only ensuring fast ions/electrons transport, but also giving rise to the higher energy density. When directly used as a binder-free electrode, NCNFs deliver a high reversible capacity of 617.8 mAh g−1 at 200 mA g−1 after 100 cycles and maintain a superior capacity of 274.1 mAh g−1 at 1.44 A g−1 even after 500 cycles. Besides, the reversible capacity up to 216.5 mAh g−1 can be still obtained at a high current density of 6 A g−1, demonstrating the excellent high-rate cyclability. The facile synthesis approach and superior electrochemical properties make NCNFs electrodes an alternative anode candidate for lithium-ion batteries.

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Shape-controlled porous carbon from calcium citrate precursor and their intriguing application in lithium-ion batteries

Cited by 12 publications

References 52 publications

Microwave Modification of N-Doped Carbon for High Performance Lithium-Ion Batteries

Microwave Modification of N-Doped Carbon for High Performance Lithium-Ion Batteries

In Situ Synthesis of ZnO/Porous Carbon Microspheres and Their High Performance for Lithium‐Ion Batteries

Cu-supported nitrogen-doped carbon nanofibers with hierarchical three-dimensional net structure as binder-free anodes for enhanced lithium-ion batteries

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