T-Nb2O5 embedded carbon nanosheets with superior reversibility and rate capability as an anode for high energy Li-ion capacitors

2019 ◽  
Vol 3 (4) ◽  
pp. 1055-1065 ◽  
Author(s):  
Dong Li ◽  
Jing Shi ◽  
Haolin Liu ◽  
Chunyue Liu ◽  
Guanghe Dong ◽  
...  
Keyword(s):  
Power Density ◽  
Rate Capability ◽  
Lithium Ion ◽  
High Energy ◽  
Carbon Nanosheets ◽  
Lithium Ion Capacitor ◽  
Li Ion

A lithium-ion capacitor was fabricated by using T-Nb2O5/GCN anode and GCN cathode, which exhibits excellent energy/power density in 0–3.5 V and bridges the gap between batteries and supercapacitors.

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.

High rate capability Li3V2¬xNix(PO4)3/C (x = 0, 0.05, and 0.1) cathodes for Li-ion asymmetric supercapacitors

2015 ◽  
Vol 3 (22) ◽  
pp. 11807-11816 ◽  
Author(s):  
Marco Secchiaroli ◽  
Gabriele Giuli ◽  
Bettina Fuchs ◽  
Roberto Marassi ◽  
Margret Wohlfahrt-Mehrens ◽  
...  
Keyword(s):  
Power Density ◽  
High Power ◽  
Rate Capability ◽  
High Energy ◽  
High Rate ◽  
High Power Density ◽  
Cycle Stability ◽  
High Rate Capability ◽  
Asymmetric Supercapacitors ◽  
Li Ion

Nanostructured Li3V2−xNix(PO4)3 (x = 0, 0.05, and 0.1) cathodes, thanks to their high rate capability and excellent cycle stability, are proposed as excellent candidates for the development of high energy and high power density Li-ion asymmetric supercapacitors.

Formation and Operating Mechanisms of Single-Crystalline Perovskite NaNbO3 Nanocubes/Few-Layered Nb2CTx MXene Hybrids towards Li-Ion Capacitors

2021 ◽  
Author(s):  
Li Qin ◽  
Yang Liu ◽  
Shuhao Zhu ◽  
Dongxu Wu ◽  
Guangyuan Wang ◽  
...  
Keyword(s):  
Lithium Ion Batteries ◽  
Power Density ◽  
Lithium Ion ◽  
High Energy ◽  
Single Crystalline ◽  
Long Duration ◽  
Li Ion

Lithium-ion capacitors (LICs), combining both merits of lithium-ion batteries and supercapacitors, possess high energy/power density and long-duration lifespan in one device. However, the dynamic imbalance between the positive and negative...

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 Progress in Preparation and Modification of LiNi0.6Mn0.2Co0.2O2 Cathode Material for High Energy Density Li-Ion Batteries

2018 ◽  
Vol 2018 ◽  
pp. 1-12 ◽  
Author(s):  
Lipeng Xu ◽  
Fei Zhou ◽  
Bing Liu ◽  
Haobing Zhou ◽  
Qichang Zhang ◽  
...  
Keyword(s):  
Cathode Materials ◽  
Low Cost ◽  
Specific Capacity ◽  
Rate Capability ◽  
Lithium Ion ◽  
High Energy ◽  
High Energy Density ◽  
Synthesis Methods ◽  
High Specific Capacity ◽  
Li Ion

Due to the advantages of high specific capacity, various temperatures, and low cost, layered LiNi0.6Co0.2Mn0.2O2 has become one of the potential cathode materials for lithium-ion battery. However, its application was limited by the high cation mixing degree and poor electric conductivity. In this paper, the influences of synthesis methods and modification such surface coating and doping materials on the electrochemical properties such as capacity, cycle stability, rate capability, and impedance of LiNi0.6Co0.2Mn0.2O2 cathode materials are reviewed and discussed. The confronting issues of LiNi0.6Co0.2Mn0.2O2 cathode materials have been pointed out, and the future development of its application is also prospected.

All Graphene Lithium Ion Capacitor with High-Energy-Power Density Performance

2018 ◽  
Vol 76 (8) ◽  
pp. 644 ◽  
Author(s):  
Xiaoyu Gu ◽  
Ye Hong ◽  
Guo Ai ◽  
Chaoyang Wang ◽  
Wenfeng Mao
Keyword(s):  
Power Density ◽  
Lithium Ion ◽  
High Energy ◽  
Lithium Ion Capacitor

Progress of Research on Li-Rich Cathode Materials xLi2MnO3·(1-x) LiMO2(M=Ni, Co, Mn...) for Li-Ion Battery

2014 ◽  
Vol 1070-1072 ◽  
pp. 543-548
Author(s):  
Xin Nuan Liu ◽  
Qun Jie Xu ◽  
Xiao Lei Yuan ◽  
Xue Jin ◽  
Luo Zeng Zhou
Keyword(s):  
High Capacity ◽  
Rate Capability ◽  
Lithium Ion ◽  
High Energy ◽  
Power Sources ◽  
Long Cycle Life ◽  
Portable Electronics ◽  
Li Ion ◽  
Storage Technologies ◽  
Efficient Power

With the development of the portable electronics industry, the need for more efficient power sources has been enlarged. Lithium-ion batteries are able to deliver high energy densities, high capacity and long cycle life at reasonable costs among competing energy storage technologies. The major goal of this paper is to introduce the promising Li-rich cathode material xLi2MnO3·(1-x) LiMO2(M=Ni, Co, Mn...), which owns enhanced energy and power density, high energy efficiency, superior rate capability and excellent cycling stability due to different modification methods.

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.

scholarly journals High power and stable P-doped yolk-shell structured Si@C anode simultaneously enhancing conductivity and Li+ diffusion kinetics

Nano Research ◽  
2020 ◽  
Author(s):  
Ming Chen ◽  
Qinnan Zhou ◽  
Jiantao Zai ◽  
Asma Iqbal ◽  
TsegayeTadesse Tsega ◽  
...  
Keyword(s):  
Power Density ◽  
High Power ◽  
Coulombic Efficiency ◽  
High Capacity ◽  
Rate Capability ◽  
Lithium Ion ◽  
High Power Density ◽  
Rate Performance ◽  
Energy Storage Devices ◽  
Lithium Ion Capacitor

Abstract Silicon is a low price and high capacity anode material for lithium-ion batteries. The yolk-shell structure can effectively accommodate Si expansion to improve stability. However, the limited rate performance of Si anodes can’t meet people’s growing demand for high power density. Herein, the phosphorus-doped yolk-shell Si@C materials (P-doped Si@C) were prepared through carbon coating on P-doped Si/SiOx matrix to obtain high power and stable devices. Therefore, the as-prepared P-doped Si@C electrodes delivered a rapid increase in Coulombic efficiency from 74.4% to 99.6% after only 6 cycles, high capacity retention of ∼ 95% over 800 cycles at 4 A·g−1, and great rate capability (510 mAh·g−1 at 35 A·g−1). As a result, P-doped Si@C anodes paired with commercial activated carbon and LiFePO4 cathode to assemble lithium-ion capacitor (high power density of ∼ 61,080 W·kg−1 at 20 A·g−1) and lithium-ion full cell (good rate performance with 68.3 mAh·g−1 at 5 C), respectively. This work can provide an effective way to further improve power density and stability for energy storage devices.

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