scholarly journals Hydrothermal synthesis and adsorption behavior of H4Ti5O12 nanorods along [100] as lithium ion-sieves

RSC Advances ◽  
2020 ◽  
Vol 10 (58) ◽  
pp. 35153-35163
Author(s):  
Bing Zhao ◽  
Min Guo ◽  
Fangren Qian ◽  
Zhiqiang Qian ◽  
Naicai Xu ◽  
...  
Keyword(s):  
Hydrothermal Synthesis ◽  
Lithium Ion ◽  
Adsorption Behavior ◽  
Liquid Lithium ◽  
Batch Experiments ◽  
Calcination Process ◽  
Hydrothermal Methods

H4Ti5O12 nanorods were successfully prepared by hydrothermal methods followed by a calcination process. Batch experiments indicate that the nanorod adsorbent is a promising adsorbent to recover lithium from liquid lithium resources.

scholarly journals Regeneration of LiFePO4 from spent lithium-ion battery by a facile closed-loop process featuring acid leaching and hydrothermal synthesis

2021 ◽  
Author(s):  
Yifan Song ◽  
Boyi Xie ◽  
Shuya Lei ◽  
Shaole Song ◽  
Wei Sun ◽  
...  
Keyword(s):  
Hydrothermal Synthesis ◽  
Lithium Ion Battery ◽  
Closed Loop ◽  
Acid Leaching ◽  
Lithium Ion ◽  
Power Battery

As a widely used power battery, the scrapping boom of LiFePO4 (LFP) battery is coming. Both pyrometallurgical repair and hydrometallurgical processes have been applied in the recycling of spent LFP...

Hydrothermal synthesis of bismuth oxybromide–bismuth oxyiodide composites with high visible light photocatalytic performance for the degradation of CV and phenol

RSC Advances ◽  
2015 ◽  
Vol 5 (39) ◽  
pp. 30851-30860 ◽  
Author(s):  
Yu-Rou Jiang ◽  
Shang-Yi Chou ◽  
Jia-Lin Chang ◽  
Shiuh-Tsuen Huang ◽  
Ho-Pan Lin ◽  
...  
Keyword(s):  
Hydrothermal Synthesis ◽  
Visible Light ◽  
Photocatalytic Performance ◽  
First Report ◽  
Hydrothermal Methods ◽  
Visible Light Photocatalytic

This is the first report on a series of BiOpBrq/BiOmIn heterojunctions that were prepared using controlled hydrothermal methods.

scholarly journals Effect of the Heating Rate to Prevent the Generation of Iron Oxides during the Hydrothermal Synthesis of LiFePO4

Nanomaterials ◽  
2021 ◽  
Vol 11 (9) ◽  
pp. 2412
Author(s):  
Francisco Ruiz-Jorge ◽  
Almudena Benítez ◽  
M. Belén García-Jarana ◽  
Jezabel Sánchez-Oneto ◽  
Juan R. Portela ◽  
...  
Keyword(s):  
Hydrothermal Synthesis ◽  
Iron Oxides ◽  
Energy Demand ◽  
Operating Cost ◽  
Negative Electrode ◽  
Lithium Ion ◽  
Synthesis Process ◽  
Manufacturing Cost ◽  
Operating Voltage ◽  
Heating Rates

Lithium-ion batteries (LIBs) have gained much interest in recent years because of the increasing energy demand and the relentless progression of climate change. About 30% of the manufacturing cost for LIBs is spent on cathode materials, and its level of development is lower than the negative electrode, separator diaphragm and electrolyte, therefore becoming the “controlling step”. Numerous cathodic materials have been employed, LiFePO4 being the most relevant one mainly because of its excellent performance, as well as its rated capacity (170 mA·h·g−1) and practical operating voltage (3.5 V vs. Li+/Li). Nevertheless, producing micro and nanoparticles with high purity levels, avoiding the formation of iron oxides, and reducing the operating cost are still some of the aspects still to be improved. In this work, we have applied two heating rates (slow and fast) to the same hydrothermal synthesis process with the main objective of obtaining, without any reducing agents, the purest possible LiFePO4 in the shortest time and with the lowest proportion of magnetite impurities. The reagents initially used were: FeSO4, H3PO4, and LiOH, and a crucial phenomenon has been observed in the temperature range between 130 and 150 °C, being verified with various techniques such as XRD and SEM.

scholarly journals Facile One-Step Hydrothermal Synthesis of the rGO@Ni3V2O8 Interconnected Hollow Microspheres Composite for Lithium-Ion Batteries

Nanomaterials ◽  
2020 ◽  
Vol 10 (12) ◽  
pp. 2389
Author(s):  
Faizan Ghani ◽  
In Wook Nah ◽  
Hyung-Seok Kim ◽  
JongChoo Lim ◽  
Afifa Marium ◽  
...  
Keyword(s):  
Hydrothermal Synthesis ◽  
Lithium Ion Batteries ◽  
High Surface ◽  
Electronic Conductivity ◽  
Lithium Ion ◽  
High Energy ◽  
Hollow Microspheres ◽  
High Energy Density ◽  
Layered Crystal ◽  
One Step

Low-cost, vanadium-based mixed metal oxides mostly have a layered crystal structure with excellent kinetics for lithium-ion batteries, providing high energy density. The existence of multiple oxidation states and the coordination chemistry of vanadium require cost-effective, robust techniques to synthesize the scaling up of their morphology and surface properties. Hydrothermal synthesis is one of the most suitable techniques to achieve pure phase and multiple morphologies under various conditions of temperature and pressure. We attained a simple one-step hydrothermal approach to synthesize the reduced graphene oxide coated Nickel Vanadate (rGO@Ni3V2O8) composite with interconnected hollow microspheres. The self-assembly route produced microspheres, which were interconnected under hydrothermal treatment. Cyclic performance determined the initial discharge/charge capacities of 1209.76/839.85 mAh g−1 at the current density of 200 mA g−1 with a columbic efficiency of 69.42%, which improved to 99.64% after 100 cycles. High electrochemical performance was observed due to high surface area, the porous nature of the interconnected hollow microspheres, and rGO induction. These properties increased the contact area between electrode and electrolyte, the active surface of the electrodes, and enhanced electrolyte penetration, which improved Li-ion diffusivity and electronic conductivity.

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