Polydiphenylamine as a promising high-energy cathode material for dual-ion batteries

2020 ◽  
Author(s):  
Filipp Aleksandrovich Obrezkov ◽  
Alexander F. Shestakov ◽  
Sergey G. Vasil'ev ◽  
Keith Stevenson ◽  
Pavel Troshin
Keyword(s):  
Cathode Material ◽  
Cathode Materials ◽  
Metal Ion ◽  
Electronic Conductivity ◽  
Active Material ◽  
High Energy ◽  
The Poor

A serious drawback of organic cathode materials for metal-ion and dual-ion batteries is the poor electronic conductivity of cathode materials leading to relatively low loading of active material in the...

scholarly journals Boron-doped sodium layered oxide for reversible oxygen redox reaction in Na-ion battery cathodes

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Yu-Jie Guo ◽  
Peng-Fei Wang ◽  
Yu-Bin Niu ◽  
Xu-Dong Zhang ◽  
Qinghao Li ◽  
...  
Keyword(s):  
Cathode Material ◽  
High Voltage ◽  
Cathode Materials ◽  
Redox Reaction ◽  
Structural Changes ◽  
Active Material ◽  
Charge Compensation ◽  
High Energy ◽  
Structural Instability ◽  
Capacity Retention

AbstractNa-ion cathode materials operating at high voltage with a stable cycling behavior are needed to develop future high-energy Na-ion cells. However, the irreversible oxygen redox reaction at the high-voltage region in sodium layered cathode materials generates structural instability and poor capacity retention upon cycling. Here, we report a doping strategy by incorporating light-weight boron into the cathode active material lattice to decrease the irreversible oxygen oxidation at high voltages (i.e., >4.0 V vs. Na+/Na). The presence of covalent B–O bonds and the negative charges of the oxygen atoms ensures a robust ligand framework for the NaLi1/9Ni2/9Fe2/9Mn4/9O2 cathode material while mitigating the excessive oxidation of oxygen for charge compensation and avoiding irreversible structural changes during cell operation. The B-doped cathode material promotes reversible transition metal redox reaction enabling a room-temperature capacity of 160.5 mAh g−1 at 25 mA g−1 and capacity retention of 82.8% after 200 cycles at 250 mA g−1. A 71.28 mAh single-coated lab-scale Na-ion pouch cell comprising a pre-sodiated hard carbon-based anode and B-doped cathode material is also reported as proof of concept.

Reversible facile Rb+ and K+ ions de/insertion in a KTiOPO4-type RbVPO4F cathode material

2018 ◽  
Vol 6 (29) ◽  
pp. 14420-14430 ◽  
Author(s):  
Stanislav S. Fedotov ◽  
Aleksandr Sh. Samarin ◽  
Victoria A. Nikitina ◽  
Dmitry A. Aksyonov ◽  
Sergey A. Sokolov ◽  
...  
Keyword(s):  
Alkali Metal ◽  
Cathode Material ◽  
Cathode Materials ◽  
Metal Ion ◽  
Positive Electrode ◽  
Type Structure

In this paper, we report on a novel RbVPO4F fluoride phosphate, which adopts the KTiOPO4 (KTP) type structure and complements the AVPO4F (A = alkali metal) family of positive electrode (cathode) materials for metal-ion batteries.

Preparation and Characterization of High-Voltage Cathode Material LiNi0.5Mn1.5O4 for Lithium Ion Batteries

2019 ◽  
Vol 953 ◽  
pp. 121-126
Author(s):  
Zhe Chen ◽  
Quan Fang Chen ◽  
Sha Ne Zhang ◽  
Guo Dong Xu ◽  
Mao You Lin ◽  
...  
Keyword(s):  
Cathode Material ◽  
Lithium Ion Batteries ◽  
Cathode Materials ◽  
Synthesis Method ◽  
Rate Capability ◽  
Lithium Ion ◽  
Diffusion Path ◽  
High Energy ◽  
High Energy Density ◽  
Charge Discharge

High energy density and rechargeable lithium ion batteries are attracting widely interest in renewable energy fields. The preparation of the high performance materials for electrodes has been regarded as the most challenging and innovative aspect. By utilizing a facile combustion synthesis method, pure nanostructure LiNi0.5Mn1.5O4 cathode material for lithium ion batteries were successfully fabricated. The crystal phase of the samples were characterized by X-Ray Diffraction, and micro-morphology as well as electrochemistry properties were also evaluated using FE-SEM, electrochemical charge-discharge test. The result shows the fabricated LiNi0.5Mn1.5O4 cathode materials had outstanding crystallinity and near-spherical morphologies. That obtained LiNi0.5Mn1.5O4 samples delivered an initial discharge capacity of 137.2 mAhg-1 at the 0.1 C together with excellent cycling stability and rate capability as positive electrodes in a lithium cell. The superior electrochemical performance of the as-prepared samples are owing to nanostructure particles possessing the shorter diffusion path for Li+ transport, and the nanostructure lead to large contact area to effectively improve the charge/discharge properties and the rate property. It is demonstrated that the as-prepared nanostructure LiNi0.5Mn1.5O4 samples have potential as cathode materials of lithium-ion battery for future new energy vehicles.

A Novel Fluorinated Carbon Material for Primary Lithium Battery

2013 ◽  
Vol 331 ◽  
pp. 427-430 ◽  
Author(s):  
Jia Chun Lu ◽  
Zhi Chao Liu ◽  
Ping Huang ◽  
Quan Fang ◽  
Min Hua Zhu
Keyword(s):  
Cathode Materials ◽  
Electronic Conductivity ◽  
Energy Performance ◽  
High Energy ◽  
High Specific Surface Area ◽  
High Energy Density ◽  
Bamboo Charcoal ◽  
Stored Energy ◽  
Electrochemical Assay ◽  
Layer Spacing

Li/graphite fluoride (GFx) cells have been widely noticed during the past decades due to its highest theoretical capacity in primary lithium batteries, high energy density, long shelf life, safety and a wide operating temperature. However, the low electronic conductivity and discharge potential Li/GFx cells obviously limited its applications. In order to improve the energy performance of Li/GFx cells, an efficient method is to increase the transportation ability of Li+ in cathode. Considering its high specific surface area and large layer spacing, bamboo charcoal is suitable for preparing the cathode materials with highly stored energy. Here, we synthesized the fluorinated bamboo charcoal (FBC) as the novel cathode materials based on gas-solid fluorination. Electrochemical assay show that the lithium/fluorinated bamboo charcoal cells have a novel discharged voltage of 3V versus Li/Li+ electrode, and a special capacity above 750 mAh g-1. The lithium/fluorinated bamboo charcoal cells may be used for new highly stored energy device in the future.

Anthozoan-like Porous Nanocages with Nano-Cobalt Armed CNTs Multifunctional Layer as Cathode Material for High-stable Na-S Battery

2022 ◽  
Author(s):  
Hui Liu ◽  
Yuanke Wu ◽  
Pan Liu ◽  
Han Wang ◽  
Mao-Wen Xu ◽  
...  
Keyword(s):  
Cathode Material ◽  
Porous Carbon ◽  
Volume Expansion ◽  
Room Temperature ◽  
Electronic Conductivity ◽  
Shuttle Effect ◽  
Nitrogen Doped ◽  
The Poor ◽  
Capacity Decay

The capacity decay of room-temperature Na-S batteries is mainly caused by the poor electronic conductivity, shuttle effect, and volume expansion of sulfur/polysulfides (NaPSs). Herein, anthozoan-like nitrogen-doped porous carbon nanocages with...

A New Primary Lithium Battery with Fluorinated Ketjenblack Cathode

2013 ◽  
Vol 704 ◽  
pp. 98-101 ◽  
Author(s):  
Jia Chun Lu ◽  
Zhi Chao Liu ◽  
Ping Huang ◽  
Quan Fang ◽  
Min Hua Zhu
Keyword(s):  
Lithium Batteries ◽  
Cathode Materials ◽  
Electronic Conductivity ◽  
Energy Performance ◽  
High Energy ◽  
High Energy Density ◽  
Stored Energy ◽  
Electrochemical Assay ◽  
Layer Spacing ◽  
Large Bulk

Li/graphite fluoride (GFx) cells, with highest theoretical capacity in primary lithium batteries, high energy density, long shelf life, safety and a wide operating temperature, have been widely noticed during the past decades. However, the low electronic conductivity and discharge potential of Li/GFx cells obviously limited its applications. The key to improve the energy performance of Li/GFx cells is to increase the transportation ability of Li+ in cathode materials. Considering its high specific surface area, large bulk volume and layer spacing, Ketjenblack is used for preparing the cathode materials with highly stored energy. Based on gas-solid fluorination, we synthesized the fluorinated Ketjenblack (FKB). As the cathode materials of lithium batteries, electrochemical assay show that the lithium/FKB cells have a novel discharged voltage of 3V versus Li/Li+ electrode, and a special capacity near 800 mAh g-1. The lithium/FKB cells may be used for a new highly stored energy device.

scholarly journals Effect of Different Composition on Voltage Attenuation of Li-Rich Cathode Material for Lithium-ion Batteries

2019 ◽  
Author(s):  
Jun Liu ◽  
Qiming Liu ◽  
Huali Zhu ◽  
Feng Lin ◽  
Yan Ji ◽  
...  
Keyword(s):  
Cathode Material ◽  
Lithium Ion Batteries ◽  
Cathode Materials ◽  
Nickel Content ◽  
Lithium Ion ◽  
High Energy ◽  
Commercial Application ◽  
Layered Oxide ◽  
Oxide Cathode ◽  
Voltage Attenuation

Li-rich layered oxide cathode materials have become one of the most promising cathode materials for high-energy-density lithium-ion batteries owning to its high theoretical specific capacity, low cost, high operating voltage and environmental friendliness. Yet they suffer from severe capacity and voltage attenuation during prolong cycling, which blocks their commercial application. To clarify these causes, we synthesize 0.5Li2MnO3·0.5LiNi0.8Co0.1Mn0.1O2 (LL-811) with high-nickel-content cathode material by a solid-sate complexation method, and it manifests a lot slower capacity and voltage attenuation during prolong cycling compared to LL-111 and LL-523 cathode materials. The capacity retention at 1C after 100 cycles reaches to 87.5% and the voltage attenuation after 100 cycles is only 0.460 V. Combining X-ray diffraction (XRD), scanning electron microscope (SEM) and transmission electron microscopy (TEM), it indicates that increasing the nickel content not only stabilizes the structure but also alleviates the attenuation of capacity and voltage. Therefore, it provides a new idea for designing of Li-rich layered oxide cathode materials that suppress voltage and capacity attenuation.

scholarly journals Off-stoichiometric Na3−3xV2+x(PO4)3/C nanocomposites as cathode materials for high-performance sodium-ion batteries prepared by high-energy ball milling

RSC Advances ◽  
2018 ◽  
Vol 8 (36) ◽  
pp. 20319-20326 ◽  
Author(s):  
Pingping Sun ◽  
Yuanting Wang ◽  
Xiuzhen Wang ◽  
Qingyu Xu ◽  
Qi Fan ◽  
...  
Keyword(s):  
Energy Storage ◽  
Cathode Material ◽  
Ball Milling ◽  
Cathode Materials ◽  
High Performance ◽  
High Energy ◽  
Sodium Ion ◽  
Sodium Ion Batteries ◽  
Energy Ball ◽  
Energy Storage Applications

Na3V2(PO4)3 (NVP) is regarded as a promising cathode material for sustainable energy storage applications.

Olivine LiMnxFe1-xPO4 Cathode Materials for Lithium Ion Batteries: Restricted Factors of Rate Performances

2021 ◽  
Author(s):  
Li Yang ◽  
Wentao Deng ◽  
Wei Xu ◽  
Ye Tian ◽  
Anni Wang ◽  
...  
Keyword(s):  
Energy Density ◽  
Cathode Material ◽  
Lithium Ion Batteries ◽  
Cathode Materials ◽  
High Performance ◽  
Lithium Ion ◽  
High Energy ◽  
High Energy Density

As a promising cathode material for high performance lithium ion batteries, olivine LiMnxFe1-xPO4 (LMFP) combines the high safety of LiFePO4 and the high energy density of LiMnPO4. However, there are...

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