Yolk–shell Nb2O5 microspheres as intercalation pseudocapacitive anode materials for high-energy Li-ion capacitors

2019 ◽  
Vol 7 (18) ◽  
pp. 11234-11240 ◽  
Author(s):  
Shida Fu ◽  
Qiang Yu ◽  
Zhenhui Liu ◽  
Ping Hu ◽  
Qiang Chen ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Energy Density ◽  
Anode Materials ◽  
Lithium Ion ◽  
High Energy ◽  
Cycling Stability ◽  
Lithium Ion Capacitor ◽  
Li Ion

Porous yolk–shell structured Nb2O5 enables a Nb2O5//activated carbon lithium-ion capacitor to exhibit superior energy density and cycling stability.

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.

Nb2O5 nanoparticles encapsulated in ordered mesoporous carbon matrix as advanced anode materials for Li ion capacitors

RSC Advances ◽  
2016 ◽  
Vol 6 (75) ◽  
pp. 71338-71344 ◽  
Author(s):  
Jingjie Wang ◽  
Hongsen Li ◽  
Laifa Shen ◽  
Shengyang Dong ◽  
Xiaogang Zhang
Keyword(s):  
Activated Carbon ◽  
Energy Density ◽  
Mesoporous Carbon ◽  
Anode Materials ◽  
High Performance ◽  
Carbon Matrix ◽  
High Energy ◽  
High Energy Density ◽  
Ordered Mesoporous ◽  
Li Ion

A high performance Li ion capacitor was constructed with Nb2O5/CMK-3 as anode and activated carbon as cathode, which demonstrated high energy density and power density benefit from the combination of the merits of batteries and supercapacitors.

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.

scholarly journals Two-dimensional SnO2 anchored biomass-derived carbon nanosheet anode for high-performance Li-ion capacitors

RSC Advances ◽  
2021 ◽  
Vol 11 (17) ◽  
pp. 10018-10026
Author(s):  
Chang Liu ◽  
Zeyin He ◽  
Jianmin Niu ◽  
Qiang Cheng ◽  
Zongchen Zhao ◽  
...  
Keyword(s):  
High Performance ◽  
Lithium Ion ◽  
High Energy ◽  
Good Combination ◽  
Two Dimensional ◽  
Power Characteristics ◽  
Coffee Grounds ◽  
Lithium Ion Capacitor ◽  
Li Ion

In this work, we have fabricated lithium-ion capacitor using SnO2/PCN as anode and waste coffee grounds derived PCN as cathode, which delivers good combination of high energy and power characteristics.

scholarly journals Novel Lithium-Ion Capacitor Based on a NiO-rGO Composite

Materials ◽  
2021 ◽  
Vol 14 (13) ◽  
pp. 3586
Author(s):  
Qi An ◽  
Xingru Zhao ◽  
Shuangfu Suo ◽  
Yuzhu Bai
Keyword(s):  
Energy Storage ◽  
Energy Density ◽  
Power Density ◽  
High Power ◽  
Specific Capacity ◽  
Lithium Ion ◽  
High Energy ◽  
Cycle Life ◽  
High Energy Density ◽  
Lithium Ion Capacitor

Lithium-ion capacitors (LICs) have been widely explored for energy storage. Nevertheless, achieving good energy density, satisfactory power density, and stable cycle life is still challenging. For this study, we fabricated a novel LIC with a NiO-rGO composite as a negative material and commercial activated carbon (AC) as a positive material for energy storage. The NiO-rGO//AC system utilizes NiO nanoparticles uniformly distributed in rGO to achieve a high specific capacity (with a current density of 0.5 A g−1 and a charge capacity of 945.8 mA h g−1) and uses AC to provide a large specific surface area and adjustable pore structure, thereby achieving excellent electrochemical performance. In detail, the NiO-rGO//AC system (with a mass ratio of 1:3) can achieve a high energy density (98.15 W h kg−1), a high power density (10.94 kW kg−1), and a long cycle life (with 72.1% capacity retention after 10,000 cycles). This study outlines a new option for the manufacture of LIC devices that feature both high energy and high power densities.

A high-voltage aqueous lithium ion capacitor with high energy density from an alkaline–neutral electrolyte

2019 ◽  
Vol 7 (8) ◽  
pp. 4110-4118 ◽  
Author(s):  
Chunyang Li ◽  
Wenzhuo Wu ◽  
Shuaishuai Zhang ◽  
Liang He ◽  
Yusong Zhu ◽  
...  
Keyword(s):  
Energy Density ◽  
High Voltage ◽  
Lithium Ion ◽  
High Energy ◽  
High Energy Density ◽  
Carbon Anode ◽  
Biomass Carbon ◽  
Proof Of Concept ◽  
Lithium Ion Capacitor ◽  
Neutral Electrolyte

A proof-of-concept lithium ion capacitor comprising LiMn2O4 nanorods as the cathode, a nitrogen-rich biomass carbon anode and a stable alkaline–neutral electrolyte was designed and fabricated.

Porous activated carbon derived from Chinese-chive for high energy hybrid lithium-ion capacitor

2018 ◽  
Vol 398 ◽  
pp. 128-136 ◽  
Author(s):  
Qun Lu ◽  
Bing Lu ◽  
Manfang Chen ◽  
Xianyou Wang ◽  
Ting Xing ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Lithium Ion ◽  
High Energy ◽  
Lithium Ion Capacitor ◽  
Chinese Chive ◽  
Porous Activated Carbon

Preparation of Activated Carbon Derived from Water Hyacinth as Electrode Active Material for Li-Ion Supercapacitor

2020 ◽  
Vol 1000 ◽  
pp. 50-57
Author(s):  
Jagad Paduraksa ◽  
Muhammad Luthfi ◽  
Ariono Verdianto ◽  
Achmad Subhan ◽  
Wahyu Bambang Widayatno ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Water Hyacinth ◽  
Electrode Materials ◽  
Storage System ◽  
Active Material ◽  
Lithium Ion ◽  
High Energy ◽  
Specific Power ◽  
Full Cell ◽  
Lithium Ion Capacitor

Lithium-Ion Capacitor (LIC) has shown promising performance to meet the needs of high energy and power-density-energy storage system in the era of electric vehicles nowadays. The development of electrode materials and electrolytes in recent years has improvised LIC performance significantly. One of the active materials of LIC electrodes, activated carbon (AC), can be synthesized from various biomass, one of which is the water hyacinth. Its abundant availability and low utilization make the water hyacinth as a promising activated carbon source. To observe the most optimal physical properties of AC, this study also compares various activation temperatures. In this study, full cell LIC was fabricated using LTO based anode, and water hyacinth derived AC as the cathode. The LIC full cell was further characterized to see the material properties and electrochemical performance. Water hyacinth derived LIC can achieve a specific capacitance of 32.11 F/g, the specific energy of 17.83 Wh/kg, and a specific power of 160.53 W/kg.

Ni-rich LiNi0·8Co0·1Mn0·1O2 coated with Li-ion conductive Li3PO4 as competitive cathodes for high-energy-density lithium ion batteries

2020 ◽  
Vol 340 ◽  
pp. 135871 ◽  
Author(s):  
Wenheng Zhang ◽  
Longwei Liang ◽  
Fei Zhao ◽  
Yang Liu ◽  
Linrui Hou ◽  
...  
Keyword(s):  
Energy Density ◽  
Lithium Ion Batteries ◽  
Lithium Ion ◽  
High Energy ◽  
High Energy Density ◽  
Li Ion
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