scholarly journals A new spinel high-entropy oxide (Mg0.2Ti0.2Zn0.2Cu0.2Fe0.2)3O4 with fast reaction kinetics and excellent stability as an anode material for lithium ion batteries

RSC Advances ◽  
2020 ◽  
Vol 10 (16) ◽  
pp. 9736-9744 ◽  
Author(s):  
Hong Chen ◽  
Nan Qiu ◽  
Baozhen Wu ◽  
Zhaoming Yang ◽  
Sen Sun ◽  
...  
Keyword(s):  
Lithium Ion ◽  
Solid State Reaction Method ◽  
High Energy ◽  
Lithium Storage ◽  
Fast Reaction ◽  
High Entropy ◽  
One Step ◽  
Energy Ball ◽  
Storage Properties ◽  
Excellent Stability

Here we present novel (Mg0.2Ti0.2Zn0.2Cu0.2Fe0.2)3O4 materials prepared via one-step solid state reaction method and subsequently high-energy ball-milling. When used as anodes for LIBs, it exhibits superior lithium storage properties.

scholarly journals Hierarchical porous ZnMnO3 yolk–shell microspheres with superior lithium storage properties enabled by a unique one-step conversion mechanism

RSC Advances ◽  
2018 ◽  
Vol 8 (55) ◽  
pp. 31388-31395 ◽  
Author(s):  
Xiaoru Su ◽  
Jian Huang ◽  
Bangyuan Yan ◽  
Zhouping Hong ◽  
Siyuan Li ◽  
...  
Keyword(s):  
Lithium Ion Batteries ◽  
Anode Material ◽  
Lithium Ion ◽  
Lithium Storage ◽  
Hierarchical Porous ◽  
One Step ◽  
High Theoretical Capacity ◽  
Storage Properties

ZnMnO3 has attracted enormous attention as a novel anode material for rechargeable lithium-ion batteries due to its high theoretical capacity.

Flexible additive-free CC@TiOxNy@SnS2 nanocomposites with excellent stability and superior rate capability for lithium-ion batteries

RSC Advances ◽  
2016 ◽  
Vol 6 (29) ◽  
pp. 24366-24372 ◽  
Author(s):  
Fengqi Lu ◽  
Qiang Chen ◽  
Yibin Wang ◽  
Yonghao Wu ◽  
Pengcheng Wei ◽  
...  
Keyword(s):  
Lithium Ion Batteries ◽  
Hydrothermal Process ◽  
Rate Capability ◽  
Lithium Ion ◽  
Lithium Storage ◽  
Free Standing ◽  
Storage Performance ◽  
Excellent Stability

The free-standing CC@TiOxNy@SnS2 nanocomposites have been synthesized via two steps hydrothermal process and exhibited excellent lithium storage performance.

Lithium storage properties of Li2MoO3 and its effect as a cathode additive in full cells

2021 ◽  
Author(s):  
Taolin Zhao ◽  
Shaokang Chen ◽  
Xingyue Gao ◽  
Yuxia Zhang
Keyword(s):  
Liquid Phase ◽  
Electrochemical Performance ◽  
Solid Phase ◽  
Specific Capacity ◽  
Lithium Ion ◽  
Phase Method ◽  
Lithium Storage ◽  
Liquid Phase Method ◽  
Cathode Additive ◽  
Storage Properties

High-performance lithium–ion batteries (LIBs) are the main development direction of future energy storage devices. However, most LIBs still face a problem of high first irreversible capacity loss. Pre-lithiation technology can increase the content of active lithium source and compensate the loss of active lithium during the first cycle. Adding lithium supplement additive to the cathode provides an effective way to improve the electrochemical performance of LIBs. Here, Li2MoO3 has been investigated as a cathode additive in the full cells. In order to optimize its preparation, Li2MoO3 has been prepared by three different methods, including solid-phase method, liquid-phase method and ultrasonic method. Based on material characterization and electrochemical performance tests, Li2MoO3 material prepared by liquid-phase method shows the best lithium storage properties and chosen as a cathode additive in the LiNi[Formula: see text]Co[Formula: see text]Mn[Formula: see text]O2/SiO@C full cells. The addition of Li2MoO3 has successfully improved the electrochemical performance of the full cell. The first discharge specific capacity increases from 103.9 mAh g[Formula: see text] to 130.4 mAh g[Formula: see text]. In short, Li2MoO3 material is a promising cathode additive for LIBs.

MIL-88A@polyoxometalate microrods as an advanced anode for high-performance lithium ion batteries

CrystEngComm ◽  
2020 ◽  
Vol 22 (21) ◽  
pp. 3588-3597 ◽  
Author(s):  
Xiangchen Zhao ◽  
Guiling Niu ◽  
Hongxun Yang ◽  
Jiaojiao Ma ◽  
Mengfei Sun ◽  
...  
Keyword(s):  
Lithium Ion Batteries ◽  
Hydrothermal Method ◽  
High Performance ◽  
Storage Capacity ◽  
Lithium Ion ◽  
Cycling Stability ◽  
Rate Performance ◽  
Lithium Storage ◽  
One Step

New MIL-88A@polyoxometalates microrods have been constructed via a simple one-step hydrothermal method, exhibiting the improved lithium storage capacity, rate performance and cycling stability.

scholarly journals Refractory High-Entropy HfTaTiNbZr-Based Alloys by Combined Use of Ball Milling and Spark Plasma Sintering: Effect of Milling Intensity

Metals ◽  
2020 ◽  
Vol 10 (9) ◽  
pp. 1268 ◽  
Author(s):  
Natalia Shkodich ◽  
Alexey Sedegov ◽  
Kirill Kuskov ◽  
Sergey Busurin ◽  
Yury Scheck ◽  
...  
Keyword(s):  
Solid Solution ◽  
Ball Milling ◽  
Spark Plasma Sintering ◽  
Vickers Hardness ◽  
High Energy ◽  
High Entropy Alloy ◽  
High Entropy ◽  
Plasma Sintering ◽  
Spark Plasma ◽  
Energy Ball

For the first time, a powder of refractory body-centered cubic (bcc) HfTaTiNbZr-based high-entropy alloy (RHEA) was prepared by short-term (90 min) high-energy ball milling (HEBM) followed by spark plasma sintering (SPS) at 1300 °C for 10 min and the resultant bulk material was characterized by XRD and SEM/EDX. The material showed ultra-high Vickers hardness (10.7 GPa) and a density of 9.87 ± 0.18 g/cm³ (98.7%). Our alloy was found to consist of HfZrTiTaNb-based solid solution with bcc structure as a main phase, a hexagonal closest packed (hcp) Hf/Zr-based solid solution, and Me2Fe phases (Me = Hf, Zr) as minor admixtures. Principal elements of the HEA phase were uniformly distributed over the bulk of HfTaTiNbZr-based alloy. Similar alloys synthesized without milling or in the case of low-energy ball milling (LEBM, 10 h) consisted of a bcc HEA and a Hf/Zr-rich hcp solid solution; in this case, the Vickers hardness of such alloys was found to have a value of 6.4 GPa and 5.8 GPa, respectively.

Ni or FeO nanocrystal-integrated hollow (solid) N-doped carbon nanospheres: preparation, characterization and electrochemical properties

Nanoscale ◽  
2020 ◽  
Vol 12 (28) ◽  
pp. 15157-15168
Author(s):  
Yucang Liang ◽  
Jonathan David Oettinger ◽  
Peng Zhang ◽  
Bin Xu
Keyword(s):  
Electrochemical Properties ◽  
Lithium Ion Batteries ◽  
Anode Materials ◽  
Lithium Ion ◽  
Carbon Nanospheres ◽  
Lithium Storage ◽  
Storage Properties

N-Doped carbon nano(micro)spheres have been rationally designed, successfully synthesized and used as anode materials for lithium-ion batteries, showing excellent lithium storage properties and superior reversibility.

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.

scholarly journals Few-layer WS2 nanosheets with oxygen-incorporated defect-sulphur entrapped by a hierarchical N, S co-doped graphene network towards advanced long-term lithium storage performances

RSC Advances ◽  
2020 ◽  
Vol 10 (12) ◽  
pp. 7134-7145
Author(s):  
Yan Wang ◽  
Xiaojun Zhao ◽  
Zhi-Hong Liu
Keyword(s):  
Lithium Storage ◽  
Oxygen Incorporation ◽  
Ion Storage ◽  
Doped Graphene ◽  
One Step ◽  
Li Ion ◽  
Ws2 Nanosheets ◽  
Storage Properties ◽  
Co Doped

One-step preparation of few-layer oxygen incorporation in defect-sulphur WS2 nanosheets embedded into the NSG framework exhibits excellent Li-ion storage properties.

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