Novel silicon and tin alloy nano-particulate materials via spark erosion for high performance and high capacity anodes in lithium ion batteries

2014 ◽  
Author(s):  
Emma Marie Hamilton White
2012 ◽  
Vol 1440 ◽  
Author(s):  
Jiajia Tan ◽  
Ashutosh Tiwari

ABSTRACTLi2FeP2O7 is a newly developed polyanionic cathode material for high performance lithium ion batteries. It is considered very attractive due to its large specific capacity, good thermal and chemical stability, and environmental benignity. However, the application of Li2FeP2O7 is limited by its low ionic and electronic conductivities. To overcome the above problem, a solution-based technique was successfully developed to synthesize Li2FeP2O7 powders with very fine and uniform particle size (< 1 μm), achieving much faster kinetics. The obtained Li2FeP2O7 powders were tested in lithium ion batteries by measurements of cyclic voltammetry, electrochemical impedance spectroscopy and galvanostatic charge/discharge cycling. We found that the modified Li2FeP2O7 cathode could maintain a relatively high capacity even at fast discharge rates.


2019 ◽  
Vol 11 (1) ◽  
Author(s):  
Lu Wang ◽  
Junwei Han ◽  
Debin Kong ◽  
Ying Tao ◽  
Quan-Hong Yang

Abstract Lithium-ion batteries (LIBs), which are high-energy-density and low-safety-risk secondary batteries, are underpinned to the rise in electrochemical energy storage devices that satisfy the urgent demands of the global energy storage market. With the aim of achieving high energy density and fast-charging performance, the exploitation of simple and low-cost approaches for the production of high capacity, high density, high mass loading, and kinetically ion-accessible electrodes that maximize charge storage and transport in LIBs, is a critical need. Toward the construction of high-performance electrodes, carbons are promisingly used in the enhanced roles of active materials, electrochemical reaction frameworks for high-capacity noncarbons, and lightweight current collectors. Here, we review recent advances in the carbon engineering of electrodes for excellent electrochemical performance and structural stability, which is enabled by assembled carbon architectures that guarantee sufficient charge delivery and volume fluctuation buffering inside the electrode during cycling. Some specific feasible assembly methods, synergism between structural design components of carbon assemblies, and electrochemical performance enhancement are highlighted. The precise design of carbon cages by the assembly of graphene units is potentially useful for the controlled preparation of high-capacity carbon-caged noncarbon anodes with volumetric capacities over 2100 mAh cm−3. Finally, insights are given on the prospects and challenges for designing carbon architectures for practical LIBs that simultaneously provide high energy densities (both gravimetric and volumetric) and high rate performance.


RSC Advances ◽  
2016 ◽  
Vol 6 (39) ◽  
pp. 32462-32466 ◽  
Author(s):  
Haihua Zhao ◽  
Wen Qi ◽  
Xuan Li ◽  
Hong Zeng ◽  
Ying Wu ◽  
...  

Alloy anodes for Li-ion batteries (LIBs) have attracted great interest due to their high capacity.


2016 ◽  
Vol 4 (19) ◽  
pp. 7185-7189 ◽  
Author(s):  
Youguo Huang ◽  
Qichang Pan ◽  
Hongqiang Wang ◽  
Cheng Ji ◽  
Xianming Wu ◽  
...  

Sn@SnO2@C nanosheets decorated with MoS2 are prepared via a facile ball milling and hydrothermal method, and the Sn@SnO2@C@MoS2 composite shows high capacity and long-term cycling stability when used as an anode material for lithium-ion batteries.


2020 ◽  
Vol 2 (2) ◽  
pp. 157-163

Flexible lithium ion batteries (FLIBs) are considered as potential application in the next 20 years for wearable devices and internet of things. However, it is a rough road to commercial preparation of flexible electrodes due to the complicated experimental process and expensive cost. Herein, a- facile fabricated strategy, filtration, is applied to disperse active materials LiFePO4 in conductive flexible network (LFP/CNTs/cotton) as a free-standing cathode for FLIBs. The fabricated free-standing LFP/CNTs/cotton electrode holds promising electrochemical stability, which still has a high capacity of 120 mAh/g at a current density of 2000 mA/g for 900 cycles. In addition, this method can be easily replicated for the flexibility of other powder active materials. This study is of great significance for the industrialization of the flexible electrode and exhibiting great potential in high-performance flexibility energy-related systems.


2019 ◽  
Vol 55 (3) ◽  
pp. 361-364 ◽  
Author(s):  
Donghee Gueon ◽  
Jun Hyuk Moon

We report simple yet rationally designed, polydopamine-wrapped, silicon nanoparticle-impregnated macroporous CNT particles for high-capacity lithium-ion batteries.


Author(s):  
Fei Zhang ◽  
Tao Jing ◽  
Shao Cai ◽  
Mingsen Deng ◽  
Dongmei Liang ◽  
...  

Rational design of high-performance anode materials is of paramount importance for developing rechargeable lithium ion batteries (LIBs) and sodium ion batteries (SIBs). In this work, ZrC2 monolayer is predicted by...


2017 ◽  
Vol 5 (46) ◽  
pp. 24269-24274 ◽  
Author(s):  
Yongzhe Wang ◽  
Mingguang Kong ◽  
Ziwei Liu ◽  
Chucheng Lin ◽  
Yi Zeng

Multilayered Co3O4/NiO/C electrodes with a ball-in-ball hollow morphology are employed in lithium-ion batteries and deliver an excellent rate capacity of 421 mA h g−1 at 4 A g−1 and a high capacity of 776 mA h g−1 over 1000 cycles at 1 A g−1.


RSC Advances ◽  
2017 ◽  
Vol 7 (87) ◽  
pp. 54939-54946 ◽  
Author(s):  
Shoupu Zhu ◽  
Lei Fan ◽  
Yingying Lu

Ultra-small and uniform Fe3O4 nanoparticle–rGO composite materials have been synthesized and used as anodes for high capacity lithium-ion batteries.


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