Engineering edge-exposed MoS2 nanoflakes anchored on the 3D cross-linked carbon frameworks for enhanced lithium storage

2020 ◽  
Vol 13 (08) ◽  
pp. 2051050
Author(s):  
Peng Huang ◽  
Yang Wu ◽  
Xinxin Wang ◽  
Peng Chen ◽  
Shuigen Li ◽  
...  
Keyword(s):  
Ion Transport ◽  
High Power ◽  
High Efficiency ◽  
Mechanical Stability ◽  
Rate Capability ◽  
Lithium Ion ◽  
Transport Network ◽  
High Rate ◽  
Lithium Storage ◽  
Transport Pathway

High-rate capability and long cycle life are currently the two most major challenges for high-power rechargeable batteries such as lithium-ion batteries (LIBs), sodium-ion batteries (SIBs). Developing electroactive materials with high-efficiency electron/ion transport network and robust mechanical stability is a key. Herein, we have successfully designed and fabricated 3D cross-linked nitrogen-doped carbon nanosheet frameworks with good interconnection and hierarchical nanostructures, and simultaneously decorated edge-enriched molybdenum disulfide (MoS[Formula: see text] nanoflakes inside the whole carbon scaffold via a salt template assisted confinement pyrolysis strategy, yielding the unique 3D carbon scaffold/MoS2 hybrids. In such a design, such hybrids not only facilitate lithium diffusion kinetics and efficient utilization of MoS2nanoflakes owing to much exposed edges and well interconnection between active components and carbon frameworks, but also provide highly efficient electron/ion transport pathway. When evaluated as anode for lithium storage, the obtained products show superior rate capability of 284 mAh g[Formula: see text] up to 5 A g[Formula: see text] and long-term cycling stability. This work demonstrates an efficient solution to design and construct a high-efficiency electron/ion transport network for high-power applications for energy storage devices.

A Niobium Oxide with Shear Structure and Planar Defects for High-Power Lithium Ion Batteries

2021 ◽  
Author(s):  
Tongtong Li ◽  
Gyutae Nam ◽  
Kuanting Liu ◽  
Jeng-Han Wang ◽  
Bote Zhao ◽  
...  
Keyword(s):  
High Power ◽  
Lithium Batteries ◽  
Anode Materials ◽  
Rate Capability ◽  
Lithium Ion ◽  
High Rate ◽  
High Rate Capability ◽  
Lithium Storage ◽  
Pseudocapacitive Behavior ◽  
Shear Structure

The development of anode materials with high-rate capability is critical to high-power lithium batteries. T-Nb2O5 has been widely reported to exhibit pseudocapacitive behavior and fast lithium storage capability. However, the...

A spherical Sn–Fe3O4@graphite composite as a long-life and high-rate-capability anode for lithium ion batteries

2016 ◽  
Vol 4 (26) ◽  
pp. 10321-10328 ◽  
Author(s):  
Hanyin Zhang ◽  
Renzong Hu ◽  
Hui Liu ◽  
Wei Sun ◽  
Zhongchen Lu ◽  
...  
Keyword(s):  
Ternary Phase ◽  
High Efficiency ◽  
Discharge Plasma ◽  
Rate Capability ◽  
Lithium Ion ◽  
High Rate ◽  
High Rate Capability ◽  
Graphite Composite ◽  
Long Cycle Life ◽  
Long Life

A long cycle life, spherical-shaped Sn–Fe3O4@C ternary-phase composite consisting of nanosized tin (Sn), magnetite (Fe3O4), and graphite (C) was prepared via a two-step process using high-efficiency discharge plasma-assisted milling (P-milling).

Hierarchically porous carbon architectures embedded with hollow nanocapsules for high-performance lithium storage

2015 ◽  
Vol 3 (9) ◽  
pp. 5054-5059 ◽  
Author(s):  
Chang Yu ◽  
Meng Chen ◽  
Xiaoju Li ◽  
Changtai Zhao ◽  
Lianlong He ◽  
...  
Keyword(s):  
Lithium Ion Batteries ◽  
Porous Carbon ◽  
High Performance ◽  
Rate Capability ◽  
Lithium Ion ◽  
High Rate ◽  
Carbon Sphere ◽  
High Rate Capability ◽  
Lithium Storage ◽  
Hierarchically Porous

Hierarchically porous carbon architectures composed of a micro-sized porous carbon sphere matrix embedded with hollow nanocapsules are configured, demonstrating a large capacity and an ultra-high rate capability in lithium ion batteries.

scholarly journals Integrating TiO2/SiO2 into Electrospun Carbon Nanofibers towards Superior Lithium Storage Performance

Nanomaterials ◽  
2019 ◽  
Vol 9 (1) ◽  
pp. 68 ◽  
Author(s):  
Wenxing Liu ◽  
Tianhao Yao ◽  
Sanmu Xie ◽  
Yiyi She ◽  
Hongkang Wang
Keyword(s):  
Carbon Nanofibers ◽  
Anode Materials ◽  
Rate Capability ◽  
Lithium Ion ◽  
High Rate ◽  
Cycle Stability ◽  
High Rate Capability ◽  
Lithium Storage ◽  
Storage Performance ◽  
The Poor

In order to overcome the poor electrical conductivity of titania (TiO2) and silica (SiO2) anode materials for lithium ion batteries (LIBs), we herein report a facile preparation of integrated titania–silica–carbon (TSC) nanofibers via electrospinning and subsequent heat-treatment. Both titania and silica are successfully embedded into the conductive N-doped carbon nanofibers, and they synergistically reinforce the overall strength of the TSC nanofibers after annealing (Note that titania–carbon or silica–carbon nanofibers cannot be obtained under the same condition). When applied as an anode for LIBs, the TSC nanofiber electrode shows superior cycle stability (502 mAh/g at 100 mA/g after 300 cycles) and high rate capability (572, 518, 421, 334, and 232 mAh/g each after 10 cycles at 100, 200, 500, 1000 and 2000 mA/g, respectively). Our results demonstrate that integration of titania/silica into N-doped carbon nanofibers greatly enhances the electrode conductivity and the overall structural stability of the TSC nanofibers upon repeated lithiation/delithiation cycling.

Fabrication of Uniform Fe3O4 Nanocubes Derived from Prussian Blue and Enhanced Performance for Lithium Storage Properties

NANO ◽  
2020 ◽  
Vol 15 (08) ◽  
pp. 2050108
Author(s):  
Youzhen Dong ◽  
Xia Ding ◽  
Wei Gu ◽  
Zhifeng Yang
Keyword(s):  
Thermal Decomposition ◽  
Electrochemical Performance ◽  
Prussian Blue ◽  
High Efficiency ◽  
Structural Characteristics ◽  
Specific Capacity ◽  
Rate Capability ◽  
Lithium Ion ◽  
Energy Storage And Conversion ◽  
Lithium Storage

Owing to the special structural characteristics, oxide derivatives of Prussian blue (PB)-based hollow structures are widely used in electrochemical energy storage and conversion. Here, Fe3O4 particles have been synthesized by one-step thermal decomposition of PB. The cube-sized iron-based PB and structural stability of thermal decomposition products at different amount of polyvinyl pyrrolidone (PVP) were well investigated. In the derivatived architecature, the hollow Fe3O4 nanocubes provide high-efficiency lithium ion transporation and the diffusion of electrolyte, enabling better electrochemical performance. The as-obtained Fe3O4 nanocubes show a remarkable rate capability (462[Formula: see text]mAh[Formula: see text]g[Formula: see text] at 1.0[Formula: see text]A/g) and outstanding specific capacity (803[Formula: see text]mAh[Formula: see text]g[Formula: see text] at 0.1[Formula: see text]A/g, 97.5% capacity retention over 140 cycles), which have a potential application as anode materials for lithium ion batteries due to the facile preparation method and high electrochemical performance.

Nitrogen-doped carbon coated silicon derived from a facile strategy with enhanced performance for lithium storage

2016 ◽  
Vol 09 (05) ◽  
pp. 1650055 ◽  
Author(s):  
Lingxing Zeng ◽  
Renpin Liu ◽  
Heyuan Qiu ◽  
Xi Chen ◽  
Xiaoxia Huang ◽  
...  
Keyword(s):  
Interfacial Polymerization ◽  
Rate Capability ◽  
Lithium Ion ◽  
Reversible Capacity ◽  
High Rate ◽  
Lithium Storage ◽  
Nitrogen Doped ◽  
Carbon Coated ◽  
Nitrogen Doped Carbon ◽  
Ion Intercalation

Silicon-based nanostructures are receiving intense interest in lithium-ion batteries (LIBs) because they have ultrahigh lithium ion storage ability. However, the fast capacity fading induced by the considerably tremendous volume changes of Si anode during the Li-ion intercalation processes as well as the low intrinsic electric conductivity have hindered its deployment. Herein, we initially developed an effective technique to synthesize the core-shell Si/nitrogen-doped carbon (Si/N[Formula: see text]C), composite by combining in situ interfacial polymerization and decorate with melamine, followed by carbonization. When used as anode material for LIBs, the Si/N[Formula: see text]C composite delivered a notable reversible capacity (1084 mAh g[Formula: see text] at 0.2 A g[Formula: see text] for 50 cycles) and high rate capability (495 mAh g[Formula: see text] at 1 A g[Formula: see text]).

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