Effects of doping high-valence transition metal (V, Nb and Zr) ions on the structure and electrochemical performance of LIB cathode material LiNi0.8Co0.1Mn0.1O2

2021 ◽  
Author(s):  
Yan-Hui Chen ◽  
Jing Zhang ◽  
Li Yi ◽  
Yongfan Zhang ◽  
Shuping Huang ◽  
...  
Keyword(s):  
Energy Density ◽  
Transition Metal ◽  
Electrochemical Performance ◽  
Cathode Material ◽  
High Energy ◽  
High Energy Density ◽  
Layered Oxides ◽  
Valence Transition ◽  
Capacity Degradation ◽  
Potential Decay

Ni-rich layered oxides, like LiNi0.8Co0.1Mn0.1O2 (NCM811), have been widely investigated as cathodes for high energy density. However, gradual structural transformation during cycling can lead to capacity degradation and potential decay...

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.

LixCoO2 (0

1981 ◽  
Vol 3-4 ◽  
pp. 171-174 ◽  
Author(s):  
K MIZUSHIMA ◽  
P JONES ◽  
P WISEMAN ◽  
J GOODENOUGH
Keyword(s):  
Energy Density ◽  
Cathode Material ◽  
High Energy ◽  
High Energy Density

Nanowire K0.19MnO2 from hydrothermal method as cathode material for aqueous supercapacitors of high energy density

2014 ◽  
Vol 130 ◽  
pp. 693-698 ◽  
Author(s):  
B.H. Zhang ◽  
Y. Liu ◽  
Z. Chang ◽  
Y.Q. Yang ◽  
Z.B. Wen ◽  
...  
Keyword(s):  
Energy Density ◽  
Cathode Material ◽  
Hydrothermal Method ◽  
High Energy ◽  
High Energy Density

scholarly journals Synthesis of LiNi0.8Mn0.1Co0.1O2 cathode material by hydrothermal method for high energy density lithium ion battery

2019 ◽  
Vol 1153 ◽  
pp. 012074 ◽  
Author(s):  
Hendri Widiyandari ◽  
Atika Nadya Sukmawati ◽  
Heri Sutanto ◽  
Cornelius Yudha ◽  
Agus Purwanto
Keyword(s):  
Energy Density ◽  
Cathode Material ◽  
Lithium Ion Battery ◽  
Hydrothermal Method ◽  
Lithium Ion ◽  
High Energy ◽  
High Energy Density

Bifunctional iron disulfide nanoellipsoids for high energy density supercapacitor and electrocatalytic oxygen evolution applications

2019 ◽  
Vol 6 (3) ◽  
pp. 659-670 ◽  
Author(s):  
Zhiqin Sun ◽  
Xue Yang ◽  
Huiming Lin ◽  
Feng Zhang ◽  
Qian Wang ◽  
...  
Keyword(s):  
Energy Density ◽  
Electrochemical Performance ◽  
Oxygen Evolution ◽  
High Energy ◽  
High Energy Density ◽  
Microwave Assisted ◽  
Iron Disulfide ◽  
Excellent Electrochemical Performance ◽  
Microwave Assisted Method

FeS2, prepared using a rapid microwave assisted method, exhibits excellent electrochemical performance for supercapacitor and OER applications.

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