scholarly journals Systematic Investigation of Prelithiated SiO2 Particles for High-Performance Anodes in Lithium-Ion Battery

2018 ◽  
Vol 8 (8) ◽  
pp. 1245 ◽  
Author(s):  
Yuyao Han ◽  
Xinyi Liu ◽  
Zhenda Lu
Keyword(s):  
High Performance ◽  
Lithium Ion ◽  
Systematic Investigation ◽  
Sio2 Particle ◽  
Sei Layer ◽  
Electrochemical Cycling ◽  
Sio2 Particles ◽  
Improved Performance ◽  
A Charge ◽  
20 Nm

Prelithiation is an important strategy used to compensate for lithium loss during the formation of a solid electrolyte interface (SEI) layer and the other irreversible reactions at the first stage of electrochemical cycling. In this paper, we report a systematic study of thermal prelithiation of SiO2 particles with different sizes (6 nm, 20 nm, 300 nm and 3 μm). All four lithiated anodes (LixSi/Li2O composites) show improved performance over pristine SiO2. More interestingly, lithiated product from micron-sized SiO2 particle demonstrates optimum performance with a charge capacity of 1859 mAhg−1 initially and maintains above 1300 mAhg−1 for over 50 cycles.

scholarly journals Fabrication of MoS2 Nanoflakes Supported on Carbon Nanotubes for High Performance Anode in Lithium-Ion Batteries (LIBs)

2019 ◽  
Vol 2019 ◽  
pp. 1-7
Author(s):  
T. Minh Nguyet Nguyen ◽  
Vinh-Dat Vuong ◽  
Mai Thanh Phong ◽  
Thang Van Le
Keyword(s):  
Carbon Nanotubes ◽  
Lithium Ion Batteries ◽  
High Performance ◽  
Lithium Ion ◽  
Interlayer Spacing ◽  
X Ray Diffraction ◽  
Multiwalled Carbon ◽  
X Ray ◽  
Functionalized Multiwalled Carbon Nanotubes ◽  
20 Nm

Molybdenum disulfide (MoS2), an inorganic-layered material similar to structure of graphite, was randomly dispersed onto the surface of functionalized multiwalled carbon nanotubes to synthesized nanocomposite MoS2/CNT. The as-obtained product was characterized via SEM, TEM, TGA, X-ray diffraction, and Raman spectroscopies. It was confirmed from XRD that MoS2 layers with interlayer spacing of 0.614 nm were successfully produced. TEM images and Raman spectra indicated a random distribution of 20 nm sized nanoflake MoS2 on the surface of MWNTs. The electrochemical performance of materials are expected to pave the way for the utilized anode material for lithium-ion batteries.

Hollow core–shell structured Si/C nanocomposites as high-performance anode materials for lithium-ion batteries

Nanoscale ◽  
2014 ◽  
Vol 6 (6) ◽  
pp. 3138-3142 ◽  
Author(s):  
Huachao Tao ◽  
Li-Zhen Fan ◽  
Wei-Li Song ◽  
Mao Wu ◽  
Xinbo He ◽  
...  
Keyword(s):  
Lithium Ion Batteries ◽  
Anode Materials ◽  
High Performance ◽  
Lithium Ion ◽  
Core Shell ◽  
Discharge Process ◽  
Hollow Core ◽  
A Charge ◽  
Large Volume Change ◽  
Charge Discharge

Hollow core–shell structured Si/C nanocomposites were prepared to adapt for the large volume change during a charge–discharge process.

Reduced Graphene Oxide Decorated with Fe3O4 Nanoparticles as High Performance Anode for Lithium Ion Batteries

2012 ◽  
Vol 519 ◽  
pp. 108-112 ◽  
Author(s):  
Huai Liang Xu ◽  
Yang Shen ◽  
Hong Bi
Keyword(s):  
Graphene Oxide ◽  
Lithium Ion Batteries ◽  
Reduced Graphene Oxide ◽  
Fe3o4 Nanoparticles ◽  
High Performance ◽  
Specific Capacity ◽  
Lithium Ion ◽  
A Value ◽  
Reduced Graphene ◽  
20 Nm

A composite of reduced graphene oxide (r-GO) decorated densely with 20 nm Fe3O4 nanoparticles has been prepared by a facile solvothermal method. The Fe3O4/r-GO composites are used as the anode material for lithium ion batteries, which show an extremely high initial discharge specific capacity of 1702 mAh/g. Compared with the pure Fe3O4 nanoparticles, the composite anode exhibits a higher capacity retention capability since its specific capacity fades very slowly and retains a value of 711 mAh/g after 30 cycles. The r-GO sheets worked as an ultra-thin and conductive substrate can not only prevent the detachment and agglomeration of Fe3O4 nanoparticles, but also compensate for the volume change of Fe3O4 nanoparticles during the charge-discharge cycles, and thus extend the cycling life of the Fe3O4/r-GO composites electrode.

scholarly journals 3D Flower-Like Hierarchitectures Constructed by SnS/SnS2Heterostructure Nanosheets for High-Performance Anode Material in Lithium-Ion Batteries

2015 ◽  
Vol 2015 ◽  
pp. 1-5 ◽  
Author(s):  
Zhiguo Wu ◽  
Fengyi Wang ◽  
Shiyong Zuo ◽  
Shuankui Li ◽  
Baisong Geng ◽  
...  
Keyword(s):  
Lithium Batteries ◽  
Anode Materials ◽  
High Performance ◽  
Three Dimensional ◽  
High Capacity ◽  
Lithium Ion ◽  
Reversible Capacity ◽  
One Pot ◽  
Long Cycle Life ◽  
20 Nm

Sn chalcogenides, including SnS, Sn2S3, and SnS2, have been extensively studied as anode materials for lithium batteries. In order to obtain one kind of high capacity, long cycle life lithium batteries anode materials, three-dimensional (3D) flower-like hierarchitectures constructed by SnS/SnS2heterostructure nanosheets with thickness of ~20 nm have been synthesized via a simple one-pot solvothermal method. The obtained samples exhibit excellent electrochemical performance as anode for Li-ion batteries (LIBs), which deliver a first discharge capacity of 1277 mAhg−1and remain a reversible capacity up to 500 mAhg−1after 50 cycles at a current of 100 mAg−1.

NiFe saponite as a new anode material for high-performance lithium-ion batteries

2020 ◽  
Vol 8 (14) ◽  
pp. 6539-6545
Author(s):  
Jian Zhang ◽  
Qing Yin ◽  
Jianeng Luo ◽  
Jingbin Han ◽  
Lirong Zheng ◽  
...  
Keyword(s):  
Lithium Ion Batteries ◽  
Anode Material ◽  
High Performance ◽  
High Capacity ◽  
Lithium Ion ◽  
Discharge Density ◽  
A Charge ◽  
First Time ◽  
Charge Discharge

NiFe saponite was discovered for the first time as a new anode material for high-performance lithium-ion batteries, delivering a high capacity of 646 mA h g−1 after 1000 cycles with a charge/discharge density of 500 mA g−1.

Helical carbon nanofibers modified with Fe2O3 as a high performance anode material for lithium-ion batteries

2021 ◽  
Author(s):  
Ting Qing ◽  
Naiqiang Liu ◽  
Yongzhong Jin ◽  
Ge Chen ◽  
Dang Min
Keyword(s):  
Particle Size ◽  
Lithium Ion Batteries ◽  
Anode Material ◽  
Carbon Nanofibers ◽  
High Performance ◽  
Lithium Ion ◽  
20 Nm ◽  
Potential Use

Fe2O3/HCNFs were successfully prepared by a chemical liquid deposition (CLPD) method. Within the hybrid composite, the HCNFs and Fe2O3 show a synergistic effect to improve the coulombic efficiency and specific capacity.

A free-standing, flexible and bendable lithium-ion anode materials with improved performance

RSC Advances ◽  
2016 ◽  
Vol 6 (112) ◽  
pp. 110733-110740 ◽  
Author(s):  
Xueqian Zhang ◽  
Xiaoxiao Huang ◽  
Yingfei Zhang ◽  
Long Xia ◽  
Bo Zhong ◽  
...  
Keyword(s):  
Electrochemical Properties ◽  
Lithium Ion Batteries ◽  
Anode Materials ◽  
High Performance ◽  
Lithium Ion ◽  
Free Standing ◽  
Improved Performance

Bendable, flexible and self-supported anode materials with excellent electrochemical properties have highly attractive for the high performance lithium-ion batteries (LIBs).

scholarly journals Facile Synthesis Sandwich-Structured Ge/NrGO Nanocomposite as Anodes for High-Performance Lithium-Ion Batteries

Crystals ◽  
2021 ◽  
Vol 11 (12) ◽  
pp. 1582
Author(s):  
Thanapat Autthawong ◽  
Theeraporn Promanan ◽  
Bralee Chayasombat ◽  
Ai-Shui Yu ◽  
Kohei Uosaki ◽  
...  
Keyword(s):  
Lithium Ion Batteries ◽  
High Performance ◽  
Lithium Ion ◽  
Reversible Capacity ◽  
Internal Resistance ◽  
Reduced Graphene ◽  
Sandwiched Structure ◽  
The Individual ◽  
Storage Technologies ◽  
20 Nm

This work aimed to design a facile preparation of sandwich-liked Ge nanoparticles/nitrogen-doped reduced graphene oxide (Ge/NrGO) nanocomposites used as anode in lithium-ion batteries through the chemical solution route. The advanced electron microscopy, STEM-HAADF and STEM-EDS mapping, evidenced that the individual Ge particles with sizes ranging from 5 to 20 nm were distributed and wrapped as sandwiches within the multi-layered NrGO sheets, which were mainly composed of the pyridinic-N form (4.8%wt.). The battery performances of the 20Ge/NrGO nanocomposite anode exhibit a high reversible capacity (700 mAh g−1) and retained its outstanding stability during long-term cycling. The internal resistance (28.0 Ω) was also decreased after cycling, according to EIS measurement. The sandwiched structure of Ge-based nanocomposite with the interconnected NrGO layers discussed in this article possessed the high-performance LIBs with great potential application in energy storage technologies.

Facile approach to thin polypyrrole encapsulation of lamellar iron (II) selenide with much improved performance for lithium-ion storage

2020 ◽  
Vol 13 (08) ◽  
pp. 2050041
Author(s):  
Yue Wang ◽  
Jiangcun Li ◽  
Xusheng Wang ◽  
Chao Wang ◽  
Jitao Chen
Keyword(s):  
Electrochemical Performance ◽  
Discharge Capacity ◽  
High Performance ◽  
High Current Density ◽  
Rate Capability ◽  
Lithium Ion ◽  
Simple Method ◽  
Ion Storage ◽  
Improved Performance ◽  
Enhanced Electrochemical Performance

A facile approach is developed to fabricate polypyrrole-encapsulated lamellar iron (II) selenide (FeSe/PPy) by directly exposing FeSe to pyrrole atmosphere at room temperature. A high FeSe loading of 97 wt.% is achieved for the FeSe/PPy composite, which is designed as an anode for lithium-ion battery (LIB) with much enhanced electrochemical performance than that of the FeSe sample. The FeSe/PPy electrodes demonstrate a reversible discharge capacity of 274 mAh g[Formula: see text] after 50 cycles at a high current density of 0.5 A g[Formula: see text], whereas the lower discharge capacity of 124 mAh g[Formula: see text] for the FeSe electrodes. The FeSe/PPy electrodes also deliver greater rate capability compared to the FeSe electrodes. The improved electrochemical performance should be assigned to the contributions of fast charge transfer and structural defense from the encapsulated PPy. Hence, the FeSe/PPy composite could serve the purpose for constructing reliable anode for LIB, and the simple method of PPy coating can also be used to build high-performance electrodes for other battery systems.

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