A high energy density Li-rich positive-electrode material with superior performances via a dual chelating agent co-precipitation route

2015 ◽  
Vol 3 (18) ◽  
pp. 9427-9431 ◽  
Author(s):  
Peiyu Hou ◽  
Long Xu ◽  
Jishun Song ◽  
Dawei Song ◽  
Xixi Shi ◽  
...  
Keyword(s):  
Energy Density ◽  
Electrode Material ◽  
Chelating Agent ◽  
High Energy ◽  
Positive Electrode ◽  
Cycle Life ◽  
High Energy Density ◽  
Positive Electrode Material ◽  
Co Precipitation ◽  
High Median

A new Li-rich positive-electrode material is successfully achieved via a dual chelating agent co-precipitation route, which delivers a high volumetric energy density of over 2100 W h L−1, superior cycle life and stable high median-voltage.

Organic positive-electrode material utilizing both an anion and cation: a benzoquinone-tetrathiafulvalene triad molecule, Q-TTF-Q, for rechargeable Li, Na, and K batteries

2019 ◽  
Vol 43 (3) ◽  
pp. 1626-1631 ◽  
Author(s):  
Minami Kato ◽  
Titus Masese ◽  
Masaru Yao ◽  
Nobuhiko Takeichi ◽  
Tetsu Kiyobayashi
Keyword(s):  
Energy Density ◽  
Electrode Material ◽  
High Energy ◽  
Rechargeable Batteries ◽  
Positive Electrode ◽  
Design Concept ◽  
High Energy Density ◽  
Discharge Process ◽  
Positive Electrode Material ◽  
Charge Discharge

This study highlights the design concept of a positive electrode material which can accommodate both cations and anions during the charge/discharge process for realizing high energy density rechargeable batteries.

LiMO2@Li2MnO3 positive-electrode material for high energy density lithium ion batteries

2016 ◽  
Vol 21 (1) ◽  
pp. 145-152 ◽  
Author(s):  
Mohammed Adnan Mezaal ◽  
Limin Qu ◽  
Guanghua Li ◽  
Wei Liu ◽  
Xiaoyuan Zhao ◽  
...  
Keyword(s):  
Energy Density ◽  
Lithium Ion Batteries ◽  
Electrode Material ◽  
Lithium Ion ◽  
High Energy ◽  
Positive Electrode ◽  
High Energy Density ◽  
Positive Electrode Material

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.

scholarly journals Fabrication of Hierarchical NiMoO4/NiMoO4 Nanoflowers on Highly Conductive Flexible Nickel Foam Substrate as a Capacitive Electrode Material for Supercapacitors with Enhanced Electrochemical Performance

Energies ◽  
2019 ◽  
Vol 12 (6) ◽  
pp. 1143 ◽  
Author(s):  
Anil Yedluri ◽  
Tarugu Anitha ◽  
Hee-Je Kim
Keyword(s):  
Energy Density ◽  
Electrochemical Performance ◽  
Specific Capacitance ◽  
Electrode Material ◽  
High Performance ◽  
Nickel Foam ◽  
High Specific Capacitance ◽  
High Energy ◽  
High Energy Density ◽  
Charge Discharge

Hierarchical NiMoO4/NiMoO4 nanoflowers were fabricated on highly conductive flexible nickel foam (NF) substrates using a facile hydrothermal method to achieve rapid charge-discharge ability, high energy density, long cycling lifespan, and higher flexibility for high-performance supercapacitor electrode materials. The synthesized composite electrode material, NF/NiMoO4/NiMoO4 with a nanoball-like NF/NiMoO4 structure on a NiMoO4 surface over a NF substrate, formed a three-dimensional interconnected porous network for high-performance electrodes. The novel NF/NiMoO4/NiMoO4 nanoflowers not only enhanced the large surface area and increased the electrochemical activity, but also provided an enhanced rapid ion diffusion path and reduced the charge transfer resistance of the entire electrode effectively. The NF/NiMoO4/NiMoO4 composite exhibited significantly improved supercapacitor performance in terms of a sustained cycling life, high specific capacitance, rapid charge-discharge capability, high energy density, and good rate capability. Electrochemical analysis of the NF/NiMoO4/NiMoO4 nanoflowers fabricated on the NF substrate revealed ultra-high electrochemical performance with a high specific capacitance of 2121 F g−1 at 12 mA g−1 in a 3 M KOH electrolyte and 98.7% capacitance retention after 3000 cycles at 14 mA g−1. This performance was superior to the NF/NiMoO4 nanoball electrode (1672 F g−1 at 12 mA g−1 and capacitance retention 93.4% cycles). Most importantly, the SC (NF/NiMoO4/NiMoO4) device displayed a maximum energy density of 47.13 W h kg−1, which was significantly higher than that of NF/NiMoO4 (37.1 W h kg−1). Overall, the NF/NiMoO4/NiMoO4 composite is a suitable material for supercapacitor applications.

Core–Shell Structured NiCo2O4@ZnCo2O4 Nanomaterials with High Energy Density for Hybrid Capacitors

2021 ◽  
Vol 16 (7) ◽  
pp. 1134-1142
Author(s):  
Wenduo Yang ◽  
Jun Xiang ◽  
Sroeurb Loy ◽  
Nan Bu ◽  
Duo Cui ◽  
...  
Keyword(s):  
Energy Density ◽  
Electrode Material ◽  
Composite Electrode ◽  
Electrode Materials ◽  
Structural Characteristics ◽  
High Energy ◽  
High Energy Density ◽  
Core Shell ◽  
Shell Composite ◽  
Hybrid Capacitors

NiCo2O4 as an electrode material for supercapacitors (SCs) has been studied by a host of researchers due to its unique structural characteristics and high capacitance. However, its performance has not yet reached the level of practical applications.it is an effective strategy to synthesize composite electrode materials for tackling the problem. Herein, NiCo2O4@ZnCo2O4 as a novel core–shell composite electrode material has been fabricated through a two-step simple hydrothermal method. The as-prepared sample can be directly used as cathode material of a supercapacitor, and its specific capacitance is 463.1 C/g at 1 A/g. An assembled capacitor has an energy density of 77 Wh·kg−1 at 2700 W·kg−1, and after 8000 cycles, 88% of the initial capacity remains.

Ultra-fine surface solid-state electrolytes for long cycle life all-solid-state lithium–air batteries

2018 ◽  
Vol 6 (43) ◽  
pp. 21248-21254 ◽  
Author(s):  
Sheng Wang ◽  
Jue Wang ◽  
Jingjing Liu ◽  
Hucheng Song ◽  
Yijie Liu ◽  
...  
Keyword(s):  
Solid State ◽  
Energy Density ◽  
High Energy ◽  
Cycle Life ◽  
High Energy Density ◽  
Safety Issues ◽  
Long Cycle Life ◽  
Fine Surface ◽  
Solid State Electrolytes ◽  
Lithium Air Batteries

Solid-state electrolytes (SSEs) are potential candidates for developing high-energy-density and safe all-solid-state lithium (Li)-metal batteries due to the elimination of most of the safety issues encountered with liquid electrolytes.

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