scholarly journals Spinel LiMn2O4 nanoparticles fabricated by the flexible soft template/Pichini method as cathode materials for aqueous lithium-ion capacitors with high energy and power density

RSC Advances ◽  
2021 ◽  
Vol 11 (25) ◽  
pp. 14891-14898
Author(s):  
Junyu Xiang ◽  
Pengxue Zhang ◽  
Shixian Lv ◽  
Yongjun Ma ◽  
Qi Zhao ◽  
...  
Keyword(s):  
Particle Size ◽  
Cathode Materials ◽  
Lithium Ion ◽  
Expanded Graphite ◽  
High Energy ◽  
Soft Template ◽  
Spinel Limn2o4 ◽  
Lithium Ion Capacitor ◽  
Power Densities ◽  
Energy And Power Density

LiMn2O4 nanoparticles were synthesized by flexible Pichini method with expanded graphite as the soft template to effectively control particle size and agglomeration, contributing to high energy/power densities of its aqueous lithium-ion capacitor.

scholarly journals Instantaneous preparation of high lithium-ion conducting sulfide solid electrolyte Li7P3S11 by a liquid phase process

RSC Advances ◽  
2017 ◽  
Vol 7 (73) ◽  
pp. 46499-46504 ◽  
Author(s):  
Marcela Calpa ◽  
Nataly Carolina Rosero-Navarro ◽  
Akira Miura ◽  
Kiyoharu Tadanaga
Keyword(s):  
Mechanical Properties ◽  
Particle Size ◽  
Solid Electrolyte ◽  
Lithium Ion ◽  
High Energy ◽  
Small Particle Size ◽  
Solid State Battery ◽  
Ion Conducting ◽  
Energy And Power Density ◽  
Phase Process

A solid electrolyte with a small particle size, good mechanical properties and high ionic conductivity is required to achieve high energy and power density in the all-solid-state battery.

Novel Lithium-Ion Capacitor Based on TiSb2 as Negative Electrode: The Role of Mass Ratio towards High Energy-to-Power Densities and Long Cyclability

2018 ◽  
Vol 2 (2) ◽  
pp. 153-159 ◽  
Author(s):  
María Arnaiz ◽  
Juan L. Gómez-Cámer ◽  
Federico Mijangos ◽  
Teófilo Rojo ◽  
Eider Goikolea ◽  
...  
Keyword(s):  
Negative Electrode ◽  
Lithium Ion ◽  
High Energy ◽  
Mass Ratio ◽  
Lithium Ion Capacitor ◽  
Power Densities

scholarly journals Fabrication of high-performance dual carbon Li-ion hybrid capacitor: mass balancing approach to improve the energy-power density and cycle life

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Tandra Panja ◽  
Jon Ajuria ◽  
Noel Díez ◽  
Dhrubajyoti Bhattacharjya ◽  
Eider Goikolea ◽  
...  
Keyword(s):  
Power Density ◽  
High Current Density ◽  
Negative Electrode ◽  
Lithium Ion ◽  
High Energy ◽  
Specific Cell ◽  
Balance Study ◽  
Stability Point ◽  
Lithium Ion Capacitor ◽  
Power Densities

Abstract Most lithium-ion capacitor (LIC) devices include graphite or non-porous hard carbon as negative electrode often failing when demanding high energy at high power densities. Herein, we introduce a new LIC formed by the assembly of polymer derived hollow carbon spheres (HCS) and a superactivated carbon (AC), as negative and positive electrodes, respectively. The hollow microstructure of HCS and the ultra large specific surface area of AC maximize lithium insertion/diffusion and ions adsorption in each of the electrodes, leading to individual remarkable capacity values and rate performances. To optimize the performance of the LIC not only in terms of energy and power densities but also from a stability point of view, a rigorous mass balance study is also performed. Optimized LIC, using a 2:1 negative to positive electrode mass ratio, shows very good reversibility within the operative voltage region of 1.5–4.2 V and it is able to deliver a specific cell capacity of 28 mA h−1 even at a high current density of 10 A g−1. This leads to an energy density of 68 W h kg−1 at an extreme power density of 30 kW kg−1. Moreover, this LIC device shows an outstanding cyclability, retaining more than 92% of the initial capacity after 35,000 charge–discharge cycles.

Nitrogen-doped activated porous carbon for 4.5 V lithium-ion capacitor with high energy and power density

2021 ◽  
pp. 103675
Author(s):  
Weikang Zheng ◽  
Zongyang Li ◽  
Guang Han ◽  
Qiannan Zhao ◽  
Guanjie Lu ◽  
...  
Keyword(s):  
Power Density ◽  
Porous Carbon ◽  
Lithium Ion ◽  
High Energy ◽  
Nitrogen Doped ◽  
Lithium Ion Capacitor ◽  
Energy And Power Density

scholarly journals Na0.76V6O15/Activated Carbon Hybrid Cathode for High-Performance Lithium-Ion Capacitors

Materials ◽  
2020 ◽  
Vol 14 (1) ◽  
pp. 122
Author(s):  
Renwei Lu ◽  
Xiaolong Ren ◽  
Chong Wang ◽  
Changzhen Zhan ◽  
Ding Nan ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Energy Density ◽  
Power Density ◽  
Cathode Materials ◽  
Low Cost ◽  
Lithium Ion ◽  
High Energy ◽  
Cycling Stability ◽  
High Energy Density ◽  
Artificial Graphite

Lithium-ion hybrid capacitors (LICs) are regarded as one of the most promising next generation energy storage devices. Commercial activated carbon materials with low cost and excellent cycling stability are widely used as cathode materials for LICs, however, their low energy density remains a significant challenge for the practical applications of LICs. Herein, Na0.76V6O15 nanobelts (NaVO) were prepared and combined with commercial activated carbon YP50D to form hybrid cathode materials. Credit to the synergism of its capacitive effect and diffusion-controlled faradaic effect, NaVO/C hybrid cathode displays both superior cyclability and enhanced capacity. LICs were assembled with the as-prepared NaVO/C hybrid cathode and artificial graphite anode which was pre-lithiated. Furthermore, 10-NaVO/C//AG LIC delivers a high energy density of 118.9 Wh kg−1 at a power density of 220.6 W kg−1 and retains 43.7 Wh kg−1 even at a high power density of 21,793.0 W kg−1. The LIC can also maintain long-term cycling stability with capacitance retention of approximately 70% after 5000 cycles at 1 A g−1. Accordingly, hybrid cathodes composed of commercial activated carbon and a small amount of high energy battery-type materials are expected to be a candidate for low-cost advanced LICs with both high energy density and power density.

scholarly journals Nitrogen-enriched graphene framework from a large-scale magnesiothermic conversion of CO2 with synergistic kinetics for high-power lithium-ion capacitors

2021 ◽  
Vol 13 (1) ◽  
Author(s):  
Chen Li ◽  
Xiong Zhang ◽  
Kai Wang ◽  
Xianzhong Sun ◽  
Yanan Xu ◽  
...  
Keyword(s):  
Energy Density ◽  
High Power ◽  
Power Output ◽  
Large Scale ◽  
Electrode Materials ◽  
Lithium Ion ◽  
High Energy ◽  
High Energy Density ◽  
Chemical Doping ◽  
Lithium Ion Capacitor

AbstractLithium-ion capacitors are envisaged as promising energy-storage devices to simultaneously achieve a large energy density and high-power output at quick charge and discharge rates. However, the mismatched kinetics between capacitive cathodes and faradaic anodes still hinder their practical application for high-power purposes. To tackle this problem, the electron and ion transport of both electrodes should be substantially improved by targeted structural design and controllable chemical doping. Herein, nitrogen-enriched graphene frameworks are prepared via a large-scale and ultrafast magnesiothermic combustion synthesis using CO2 and melamine as precursors, which exhibit a crosslinked porous structure, abundant functional groups and high electrical conductivity (10524 S m−1). The material essentially delivers upgraded kinetics due to enhanced ion diffusion and electron transport. Excellent capacities of 1361 mA h g−1 and 827 mA h g−1 can be achieved at current densities of 0.1 A g−1 and 3 A g−1, respectively, demonstrating its outstanding lithium storage performance at both low and high rates. Moreover, the lithium-ion capacitor based on these nitrogen-enriched graphene frameworks displays a high energy density of 151 Wh kg−1, and still retains 86 Wh kg−1 even at an ultrahigh power output of 49 kW kg−1. This study reveals an effective pathway to achieve synergistic kinetics in carbon electrode materials for achieving high-power lithium-ion capacitors.

Boosting Cycling Stability of Ni-rich Layered Oxide Cathode by Dry Coating of Ultrastable Li3V2(PO4)3 Nanoparticles

Nanoscale ◽  
2021 ◽  
Author(s):  
Dongdong Wang ◽  
Qizhang Yan ◽  
Mingqian Li ◽  
Hongpeng Gao ◽  
Jianhua Tian ◽  
...  
Keyword(s):  
Lithium Ion Batteries ◽  
Cathode Materials ◽  
Lithium Ion ◽  
High Energy ◽  
Cycling Stability ◽  
Next Generation ◽  
Layered Oxides ◽  
Dry Coating ◽  
Layered Oxide ◽  
Oxide Cathode

Nickel (Ni)-rich layered oxides such as LiNi0.6Co0.2Mn0.2O2 (NCM622) represent one of the most promising candidates for the next-generation high-energy lithium-ion batteries (LIBs). However, the pristine Ni-rich cathode materials usually suffer...

Valuation of Surface Coatings in High-Energy Density Lithium-ion Battery Cathode Materials

2021 ◽  
Author(s):  
Umair Nisar ◽  
Nitin Muralidharan ◽  
Rachid Essehli ◽  
Ruhul Amin ◽  
Ilias Belharouak
Keyword(s):  
Energy Density ◽  
Lithium Ion Battery ◽  
Cathode Materials ◽  
Lithium Ion ◽  
High Energy ◽  
Surface Coatings ◽  
High Energy Density
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