Two dimension transition metal boride Y2B2 as a promising anode in Li-ion and Na-ion batteries

Ninety percent of the energy produced today come from fossil fuels, making dramatically negative impact on our future due to rapid consumption of these energy sources, ecological damage and climate change. This justifies development of the renewable energy sources and concurrently efficient large storage devices capable to replace fossil fuels. Li-ion batteries have originally been developed for portable electronic devices, but nowadays new application niches are envisaged in electric vehicles and stationary energy storages. However, to satisfy the needs of these rapidly growing applications, Li-ion batteries require further significant improvement of their properties: capacity and power, cyclability, safety and cost. Cathode is the key part of the Li-ion batteries largely determining their performance. Severe requirements are imposed on a cathode material, which should provide fast reversible intercalation of Li-ions at redox potential close to the upper boundary of electrolyte stability window, possess relatively low molecular weight and exhibit small volume variation upon changing Li-concentration. First generation of the cathode materials for the Li-ion batteries based on the spinel (LiM2O4, M – transition metal) or rock-salt derivatives (LiMO2) has already been widely commercialised. However, the potential to further improve the performance of these materials is almost exhausted. The compounds, containing lithium and transition metal cations together with different polyanions (XmOn)p- (X=B, P, S, Si), are now considered as the most promising cathode materials for the next generation of the Li-ion batteries. Covalently-bonded structural frameworks in these compounds offer long-term structural stability, which is essential for good cyclability and safety. Further advantages are expected from combining different anions (such as (XO4)p- and F- ) in the anion sublattice, with the hope to enhance the specific energy and power of these materials. Various fluoride-phosphates and fluoride-sulphates have been recently discovered, and some of them exhibit attractive electrochemical performance. An overview of the research on the cathode materials for the Li-ion batteries will be presented with special emphasis on crystallography as a guide towards improved properties important for practical applications.

Download Full-text

A general polymer-assisted solution approach to grow transition metal oxide nanostructures directly on nickel foam as anodes for Li-ion batteries

Journal of Power Sources ◽

10.1016/j.jpowsour.2013.05.116 ◽

2013 ◽

Vol 242 ◽

pp. 604-609 ◽

Cited By ~ 15

Author(s):

Yun Xu ◽

Ling Fei ◽

Engang Fu ◽

Bin Yuan ◽

Joshua Hill ◽

...

Keyword(s):

Transition Metal ◽

Metal Oxide ◽

Nickel Foam ◽

Transition Metal Oxide ◽

Li Ion Batteries ◽

Solution Approach ◽

Oxide Nanostructures ◽

Metal Oxide Nanostructures ◽

Li Ion

Download Full-text

A Fast Approach to Obtain Layered Transition-Metal Cathode Material for Rechargeable Batteries

Batteries ◽

10.3390/batteries8010004 ◽

2022 ◽

Vol 8 (1) ◽

pp. 4

Author(s):

Shofirul Sholikhatun Nisa ◽

Mintarsih Rahmawati ◽

Cornelius Satria Yudha ◽

Hanida Nilasary ◽

Hartoto Nursukatmo ◽

...

Keyword(s):

Transition Metal ◽

Cathode Material ◽

Rechargeable Batteries ◽

Material Behavior ◽

Heating Process ◽

Battery Materials ◽

High Storage Capacity ◽

Li Ion ◽

Layered Transition Metal ◽

High Storage

Li-ion batteries as a support for future transportation have the advantages of high storage capacity, a long life cycle, and the fact that they are less dangerous than current battery materials. Li-ion battery components, especially the cathode, are the intercalation places for lithium, which plays an important role in battery performance. This study aims to obtain the LiNixMnyCozO2 (NMC) cathode material using a simple flash coprecipitation method. As precipitation agents and pH regulators, oxalic acid and ammonia are widely available and inexpensive. The composition of the NMC mole ratio was varied, with values of 333, 424, 442, 523, 532, 622, and 811. As a comprehensive study of NMC, lithium transition-metal oxide (LMO, LCO, and LNO) is also provided. The crystal structure, functional groups, morphology, elemental composition and material behavior of the particles were all investigated during the heating process. The galvanostatic charge–discharge analysis was tested with cylindrical cells and using mesocarbon microbeads/graphite as the anode. Cells were tested at 2.7–4.25 V at 0.5 C. Based on the analysis results, NMC with a mole ratio of 622 showed the best characteristicd and electrochemical performance. After 100 cycles, the discharged capacity reaches 153.60 mAh/g with 70.9% capacity retention.

Download Full-text

Li intercalation and anion/cation substitution of transition metal chalcogenides: Effects on crystal structure, microstructure, magnetic properties and Li+ ion mobility

Progress in Solid State Chemistry ◽

10.1016/j.progsolidstchem.2009.11.007 ◽

2009 ◽

Vol 37 (2-3) ◽

pp. 206-225 ◽

Cited By ~ 17

Author(s):

Wolfgang Bensch ◽

Thomas Bredow ◽

Hubert Ebert ◽

Paul Heitjans ◽

Sylvio Indris ◽

...

Keyword(s):

Crystal Structure ◽

Magnetic Properties ◽

Transition Metal ◽

Ion Mobility ◽

Cation Substitution ◽

Metal Chalcogenides ◽

Transition Metal Chalcogenides ◽

Li Ion

Download Full-text

Two-dimensional stable transition metal carbides (MnC and NbC) with prediction and novel functionalizations

Physical Chemistry Chemical Physics ◽

10.1039/c8cp04541k ◽

2018 ◽

Vol 20 (39) ◽

pp. 25437-25445 ◽

Cited By ~ 8

Author(s):

Bingwen Zhang ◽

Yina Huang ◽

Weicheng Bao ◽

Baolin Wang ◽

Qiangqiang Meng ◽

...

Keyword(s):

Transition Metal ◽

Hall Effect ◽

Quantum Spin ◽

Two Dimensional ◽

Li Ion Battery ◽

Metal Carbides ◽

Half Metallic ◽

Quantum Spin Hall Effect ◽

Transition Metal Carbides ◽

Li Ion

MnC and NbC monolayers are predicted to be stable and promising for Li-ion battery, by functionalization, they exhibit half-metallic property and quantum spin Hall effect, respectively.

Download Full-text