scholarly journals Carbon-Coated SiO2 Composites as Promising Anode Material for Li-Ion Batteries

Molecules ◽  
2021 ◽  
Vol 26 (15) ◽  
pp. 4531
Author(s):  
Mihaela-Ramona Buga ◽  
Adnana Alina Spinu-Zaulet ◽  
Cosmin Giorgian Ungureanu ◽  
Raul-Augustin Mitran ◽  
Eugeniu Vasile ◽  
...  
Keyword(s):  
Anode Material ◽  
Photoelectron Spectroscopy ◽  
Coulombic Efficiency ◽  
Cycling Stability ◽  
Li Ion Batteries ◽  
Transfer Resistance ◽  
Promising Alternative ◽  
X Ray ◽  
Carbon Coated ◽  
Li Ion

Porous silica-based materials are a promising alternative to graphite anodes for Li-ion batteries due to their high theoretical capacity, low discharge potential similar to pure silicon, superior cycling stability compared to silicon, abundance, and environmental friendliness. However, several challenges prevent the practical application of silica anodes, such as low coulombic efficiency and irreversible capacity losses during cycling. The main strategy to tackle the challenges of silica as an anode material has been developed to prepare carbon-coated SiO2 composites by carbonization in argon atmosphere. A facile and eco-friendly method of preparing carbon-coated SiO2 composites using sucrose is reported herein. The carbon-coated SiO2 composites were characterized using X-ray diffraction, X-ray photoelectron spectroscopy, thermogravimetry, transmission and scanning electron microscopy coupled with energy-dispersive X-ray spectroscopy, cyclic voltammetry, and charge–discharge cycling. A C/SiO2-0.085 M calendered electrode displays the best cycling stability, capacity of 714.3 mAh·g−1, and coulombic efficiency as well as the lowest charge transfer resistance over 200 cycles without electrode degradation. The electrochemical performance improvement could be attributed to the positive effect of the carbon thin layer that can effectively diminish interfacial impedance.

Carbon coated porous silicon flakes with high initial coulombic efficiency and long-term cycling stability for lithium ion batteries

2019 ◽  
Vol 3 (9) ◽  
pp. 2361-2365 ◽  
Author(s):  
Xiaoyong Dou ◽  
Ming Chen ◽  
Jiantao Zai ◽  
Zhen De ◽  
Boxu Dong ◽  
...  
Keyword(s):  
Porous Silicon ◽  
Lithium Ion Batteries ◽  
Anode Material ◽  
Coulombic Efficiency ◽  
Lithium Ion ◽  
Cycling Stability ◽  
Next Generation ◽  
Carbon Coated ◽  
Initial Coulombic Efficiency

Silicon (Si) has been regarded as a promising next-generation anode material to replace carbon-based materials for lithium ion batteries (LIBs).

Porous niobium nitride as a capacitive anode material for advanced Li-ion hybrid capacitors with superior cycling stability

2016 ◽  
Vol 4 (25) ◽  
pp. 9760-9766 ◽  
Author(s):  
Peiyu Wang ◽  
Rutao Wang ◽  
Junwei Lang ◽  
Xu Zhang ◽  
Zhenkun Chen ◽  
...  
Keyword(s):  
Anode Material ◽  
Lithium Ion ◽  
Niobium Nitride ◽  
Cycling Stability ◽  
Li Ion Batteries ◽  
Li Ion ◽  
Superior Cycling Stability ◽  
Hybrid Capacitors

Lithium-ion hybrid capacitors (LIHCs) are receiving intense interest because they can combine the distinctive advantages of Li-ion batteries and supercapacitors.

TiO2(B)–CNT–graphene ternary composite anode material for lithium ion batteries

RSC Advances ◽  
2015 ◽  
Vol 5 (29) ◽  
pp. 22449-22454 ◽  
Author(s):  
Tao Shen ◽  
Xufeng Zhou ◽  
Hailiang Cao ◽  
Chao Zheng ◽  
Zhaoping Liu
Keyword(s):  
Lithium Ion Batteries ◽  
Anode Material ◽  
Lithium Ion ◽  
Cycling Stability ◽  
Conductive Network ◽  
Rate Performance ◽  
Li Ion Batteries ◽  
Composite Anode ◽  
Ternary Composite ◽  
Li Ion

The TiO2(B)–CNT–graphene ternary composite, in which graphene and CNTs construct a highly efficient conductive network, exhibits excellent rate performance and cycling stability as an anode material for Li-ion batteries.

Carbon-Coated Nanophase CaMoO4as Anode Material for Li Ion Batteries

2004 ◽  
Vol 16 (3) ◽  
pp. 504-512 ◽  
Author(s):  
N. Sharma ◽  
K. M. Shaju ◽  
G. V. Subba Rao ◽  
B. V. R. Chowdari ◽  
Z. L. Dong ◽  
...  
Keyword(s):  
Anode Material ◽  
Li Ion Batteries ◽  
Carbon Coated ◽  
Li Ion

Lithium chromium pyrophosphate as an insertion material for Li-ion batteries

2015 ◽  
Vol 71 (6) ◽  
pp. 661-667 ◽  
Author(s):  
Martin Reichardt ◽  
Sébastien Sallard ◽  
Petr Novák ◽  
Claire Villevieille
Keyword(s):  
Sol Gel ◽  
Insertion Reaction ◽  
Li Ion Batteries ◽  
Conductivity Measurements ◽  
X Ray Diffraction ◽  
Theoretical Limit ◽  
X Ray ◽  
Electrochemically Active ◽  
Carbon Coated ◽  
Li Ion

Lithium chromium pyrophosphate (LiCrP2O7) and carbon-coated LiCrP2O7 (LiCrP2O7/C) were synthesized by solid-state and sol–gel routes, respectively. The materials were characterized by X-ray diffraction (XRD), thermogravimetric analysis (TGA), scanning electron microscopy (SEM) and conductivity measurements. LiCrP2O7 powder has a conductivity of ∼ 10−8 S cm−1, ∼ 104 times smaller than LiCrP2O7/C (∼ 10−4 S cm−1). LiCrP2O7/C is electrochemically active, mainly between 1.8 and 2.2 V versus Li+/Li (Cr3+/Cr2+ redox couple), whereas LiCrP2O7 has limited electrochemical activity. LiCrP2O7/C delivers a reversible specific charge up to ∼ 105 mAh g−1 after 100 cycles, close to the theoretical limit of 115 mAh g−1. Operando XRD experiments show slight peak shifts between 2.2 and 4.8 V versus Li+/Li, and a reversible amorphization between 1.8 and 2.2 V versus Li+/Li, suggesting an insertion reaction mechanism.

scholarly journals Scalable Synthesis and Electrochemical Properties of Porous Si-CoSi2-C Composites as an Anode for Li-ion Batteries

Materials ◽  
2021 ◽  
Vol 14 (18) ◽  
pp. 5397
Author(s):  
Hyungeun Seo ◽  
Hae-Ri Yang ◽  
Youngmo Yang ◽  
Kyungbae Kim ◽  
Sung Hyon Kim ◽  
...  
Keyword(s):  
Photoelectron Spectroscopy ◽  
High Capacity ◽  
High Energy ◽  
Attractive Alternative ◽  
Composite Electrodes ◽  
Li Ion Batteries ◽  
Porous Si ◽  
X Ray ◽  
Synthesis Strategy ◽  
Li Ion

Si-based anodes for Li-ion batteries (LIBs) are considered to be an attractive alternative to graphite due to their higher capacity, but they have low electrical conductivity and degrade mechanically during cycling. In the current study, we report on a mass-producible porous Si-CoSi2-C composite as a high-capacity anode material for LIBs. The composite was synthesized with two-step milling followed by a simple chemical etching process. The material conversion and porous structure were characterized by X-ray diffraction, X-ray photoelectron spectroscopy, and electron microscopy. The electrochemical test results demonstrated that the Si-CoSi2-C composite electrode exhibits greatly improved cycle and rate performance compared with conventional Si-C composite electrodes. These results can be ascribed to the role of CoSi2 and inside pores. The CoSi2 synthesized in situ during high-energy mechanical milling can be well attached to the Si; its conductive phase can increase electrical connection with the carbon matrix and the Cu current collectors; and it can accommodate Si volume changes during cycling. The proposed synthesis strategy can provide a facile and cost-effective method to produce Si-based materials for commercial LIB anodes.

Sulfurization synthesis of a new anode material for Li-ion batteries: understanding the role of sulfurization in lithium ion conversion reactions and promoting lithium storage performance

2019 ◽  
Vol 7 (37) ◽  
pp. 21270-21279 ◽  
Author(s):  
Yanmin Qin ◽  
Zhongqing Jiang ◽  
Liping Guo ◽  
Jianlin Huang ◽  
Zhong-Jie Jiang ◽  
...  
Keyword(s):  
Anode Material ◽  
High Capacity ◽  
Lithium Ion ◽  
Li Ion Batteries ◽  
Lithium Storage ◽  
Storage Performance ◽  
Carbon Coated ◽  
Li Ion ◽  
Good Cycling Stability

N, S co-doped carbon coated MnOS (MnOS@NSC) has been demonstrated to be a potential anode material for LIBs with high capacity, good cycling stability and excellent rate performance.

Engineering a hierarchical hollow hematite nanostructure for lithium storage

2016 ◽  
Vol 4 (38) ◽  
pp. 14687-14692 ◽  
Author(s):  
Fei Ye ◽  
Yuncheng Hu ◽  
Yong Zhao ◽  
Degui Zhu ◽  
Yonggui Wang ◽  
...  
Keyword(s):  
Anode Material ◽  
Cycling Stability ◽  
High Rate ◽  
Rate Performance ◽  
Li Ion Batteries ◽  
Lithium Storage ◽  
Li Ion ◽  
High Rate Performance ◽  
Good Cycling Stability ◽  
Li Storage

A new hierarchical hollow α-Fe2O3 nanostructure that has a nanosphere morphology of approximately 250 nm in diameter integrated with ensembles of 15 nm diameter nanotubes is designed and engineered. As an anode material for Li-ion batteries, the HHFN exhibits significantly improved Li storage capability, good cycling stability, as well as high-rate performance.

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