A new O3-type layered oxide cathode with high energy/power density for rechargeable Na batteries

2015 ◽  
Vol 51 (22) ◽  
pp. 4693-4696 ◽  
Author(s):  
Haodong Liu ◽  
Jing Xu ◽  
Chuze Ma ◽  
Ying Shirley Meng
Keyword(s):  
Phase Transformation ◽  
Energy Density ◽  
Cathode Material ◽  
Power Density ◽  
High Energy ◽  
High Energy Density ◽  
Rate Performance ◽  
Layered Oxide ◽  
Oxide Cathode ◽  
Wide Range

A new O3–Na0.78Li0.18Ni0.25Mn0.583Ow is prepared as the cathode material for Na-ion batteries, delivering exceptionally high energy density and superior rate performance. No phase transformation happens through a wide range of sodium concentrations.

High Energy Density Sodium-Ion Battery with Industrially Feasible and Air-Stable O3-Type Layered Oxide Cathode

2017 ◽  
Vol 8 (5) ◽  
pp. 1701610 ◽  
Author(s):  
Jianqiu Deng ◽  
Wen-Bin Luo ◽  
Xiao Lu ◽  
Qingrong Yao ◽  
Zhongmin Wang ◽  
...  
Keyword(s):  
Energy Density ◽  
High Energy ◽  
Sodium Ion ◽  
High Energy Density ◽  
Sodium Ion Battery ◽  
Layered Oxide ◽  
Oxide Cathode

scholarly journals Comparative Investigation of Non-halogenated Imidazolium and Phosphonium-based Surface-Active Ionic Liquids as Electrolyte for Supercapacitors

2021 ◽  
Author(s):  
Preeti Jain ◽  
Oleg N. Antzutkin
Keyword(s):  
Ionic Liquids ◽  
Energy Density ◽  
Specific Capacitance ◽  
Power Density ◽  
High Energy ◽  
High Energy Density ◽  
Equivalent Series Resistance ◽  
Imidazolium Cations ◽  
Wide Range ◽  
Surface Active

<p>We report a comparative analysis of non-halogenated surface-active ionic liquids (SAILs), which consists of the surface-active anion, 2-ethylhexyl sulfate, and the phosphonium, and imidazolium cations <i>i.e.,</i> tetrabutylphosphonium ([P<sub>4444</sub>]<sup>+</sup>), trihexyl(tetradecyl)phosphonium ([P<sub>66614</sub>]<sup>+</sup>), and 1-methyl-3-hexylimidazolium ([C<sub>6</sub>C<sub>1</sub>IM]<sup>+</sup>). We explored the thermal and electrochemical properties, <i>i.e.</i>, degradation, melting and crystallization temperatures, and ionic conductivity of this new class of IL. These SAILs were tested as an electrolyte in a multi-walled carbon nanotubes (MWCNTs)-based supercapacitor at various temperatures from 253 to 373 K. The electrochemical performance of different SAILs by varying the cationic core as a function of temperature were compared, in the same MWCNT-based supercapacitor. We found that the supercapacitor cell with [C<sub>6</sub>C<sub>1</sub>IM][EHS] shown high specific capacitance (<i>C<sub>elec</sub></i> in F g<sup>-1</sup>), a high energy density (<i>E</i> in Wh kg<sup>-1</sup>), and a high power density (<i>P</i> in kW kg<sup>-1</sup>) when compared to those for the other SAILs <i>i.e.</i> [P<sub>4444</sub>][EHS], [P<sub>66614</sub>][EHS], and [N<sub>8888</sub>][EHS] at all temperatures. The supercapacitor with an MWCNT-based electrode and [C<sub>6</sub>C<sub>1</sub>IM][EHS], [P<sub>4444</sub>][EHS], and [P<sub>66614</sub>][EHS] as an electrolyte showed a specific capacitance of 148, 90, and 47 F g<sup>-1</sup> (at the scan rate of 2 mV s<sup>-1</sup>) with an energy density of 82, 50, and 26 Wh kg<sup>-1</sup> (at 2 mV s<sup>-1</sup>) respectively, at 298 K. The temperature effect can be seen by the three to four-fold increase in the specific capacitance of the cell and the energy density values, <i>i.e.</i>, 290, 198, and 114 F g<sup>-1</sup> (at 2 mV s<sup>-1</sup>) and 161, 110, and 63 Wh kg<sup>-1</sup> (at 2 mV s<sup>-1</sup>), respectively, at 373 K. This study reveals that these new SAILs specifically [C<sub>6</sub>C<sub>1</sub>IM][EHS] and [P<sub>4444</sub>][EHS] can potentially be used as electrolytes in the wide range of temperature. The solution resistance (<i>R<sub>s</sub></i>), charge transfer resistance (<i>R<sub>ct</sub></i>), and equivalent series resistance (ESR) also decreased with an increase in temperature for all SAILs as electrolytes. These new SAILs can explicitly be used for high-temperature (wide range of temperature) electrochemical applications, such as efficient supercapacitors for high energy storage due to enhanced specific capacitance, energy, and power density at elevated temperatures. </p>

scholarly journals Comparative Investigation of Non-halogenated Imidazolium and Phosphonium-based Surface-Active Ionic Liquids as Electrolyte for Supercapacitors

2021 ◽  
Author(s):  
Preeti Jain ◽  
Oleg N. Antzutkin
Keyword(s):  
Ionic Liquids ◽  
Energy Density ◽  
Specific Capacitance ◽  
Power Density ◽  
High Energy ◽  
High Energy Density ◽  
Equivalent Series Resistance ◽  
Imidazolium Cations ◽  
Wide Range ◽  
Surface Active

<p>We report a comparative analysis of non-halogenated surface-active ionic liquids (SAILs), which consists of the surface-active anion, 2-ethylhexyl sulfate, and the phosphonium, and imidazolium cations <i>i.e.,</i> tetrabutylphosphonium ([P<sub>4444</sub>]<sup>+</sup>), trihexyl(tetradecyl)phosphonium ([P<sub>66614</sub>]<sup>+</sup>), and 1-methyl-3-hexylimidazolium ([C<sub>6</sub>C<sub>1</sub>IM]<sup>+</sup>). We explored the thermal and electrochemical properties, <i>i.e.</i>, degradation, melting and crystallization temperatures, and ionic conductivity of this new class of IL. These SAILs were tested as an electrolyte in a multi-walled carbon nanotubes (MWCNTs)-based supercapacitor at various temperatures from 253 to 373 K. The electrochemical performance of different SAILs by varying the cationic core as a function of temperature were compared, in the same MWCNT-based supercapacitor. We found that the supercapacitor cell with [C<sub>6</sub>C<sub>1</sub>IM][EHS] shown high specific capacitance (<i>C<sub>elec</sub></i> in F g<sup>-1</sup>), a high energy density (<i>E</i> in Wh kg<sup>-1</sup>), and a high power density (<i>P</i> in kW kg<sup>-1</sup>) when compared to those for the other SAILs <i>i.e.</i> [P<sub>4444</sub>][EHS], [P<sub>66614</sub>][EHS], and [N<sub>8888</sub>][EHS] at all temperatures. The supercapacitor with an MWCNT-based electrode and [C<sub>6</sub>C<sub>1</sub>IM][EHS], [P<sub>4444</sub>][EHS], and [P<sub>66614</sub>][EHS] as an electrolyte showed a specific capacitance of 148, 90, and 47 F g<sup>-1</sup> (at the scan rate of 2 mV s<sup>-1</sup>) with an energy density of 82, 50, and 26 Wh kg<sup>-1</sup> (at 2 mV s<sup>-1</sup>) respectively, at 298 K. The temperature effect can be seen by the three to four-fold increase in the specific capacitance of the cell and the energy density values, <i>i.e.</i>, 290, 198, and 114 F g<sup>-1</sup> (at 2 mV s<sup>-1</sup>) and 161, 110, and 63 Wh kg<sup>-1</sup> (at 2 mV s<sup>-1</sup>), respectively, at 373 K. This study reveals that these new SAILs specifically [C<sub>6</sub>C<sub>1</sub>IM][EHS] and [P<sub>4444</sub>][EHS] can potentially be used as electrolytes in the wide range of temperature. The solution resistance (<i>R<sub>s</sub></i>), charge transfer resistance (<i>R<sub>ct</sub></i>), and equivalent series resistance (ESR) also decreased with an increase in temperature for all SAILs as electrolytes. These new SAILs can explicitly be used for high-temperature (wide range of temperature) electrochemical applications, such as efficient supercapacitors for high energy storage due to enhanced specific capacitance, energy, and power density at elevated temperatures. </p>

High Energy Density Lithium Ion Batteries with Iron- and Nickel-Substituted Lithium-Rich Layered Oxide Cathode

2016 ◽  
Vol 163 (9) ◽  
pp. A1881-A1885 ◽  
Author(s):  
Ryota Yuge ◽  
Noriyuki Tamura ◽  
Sadanori Kuroshima ◽  
Katsumi Maeda ◽  
Kaoru Narita ◽  
...  
Keyword(s):  
Energy Density ◽  
Lithium Ion Batteries ◽  
Lithium Ion ◽  
High Energy ◽  
High Energy Density ◽  
Layered Oxide ◽  
Oxide Cathode

A New P2‐Type Layered Oxide Cathode with Extremely High Energy Density for Sodium‐Ion Batteries

2019 ◽  
Vol 9 (15) ◽  
pp. 1803346 ◽  
Author(s):  
Jang‐Yeon Hwang ◽  
Jongsoon Kim ◽  
Tae‐Yeon Yu ◽  
Yang‐Kook Sun
Keyword(s):  
Energy Density ◽  
High Energy ◽  
Sodium Ion ◽  
High Energy Density ◽  
Sodium Ion Batteries ◽  
Layered Oxide ◽  
Oxide Cathode

Novel High Energy Density Sodium Layered Oxide Cathode Materials: from Material to Cells

2017 ◽  
Vol 75 (22) ◽  
pp. 13-24 ◽  
Author(s):  
Katherine Smith ◽  
Joshua Treacher ◽  
Daniela Ledwoch ◽  
Paul Adamson ◽  
Emma Kendrick
Keyword(s):  
Energy Density ◽  
Cathode Materials ◽  
High Energy ◽  
High Energy Density ◽  
Layered Oxide ◽  
Oxide Cathode

Li- and Mn-rich layered oxide cathode materials for lithium-ion batteries: a review from fundamentals to research progress and applications

2018 ◽  
Vol 3 (5) ◽  
pp. 748-803 ◽  
Author(s):  
Hongge Pan ◽  
Shiming Zhang ◽  
Jian Chen ◽  
Mingxia Gao ◽  
Yongfeng Liu ◽  
...  
Keyword(s):  
Energy Density ◽  
Lithium Ion Batteries ◽  
Cathode Materials ◽  
Lithium Ion ◽  
High Energy ◽  
High Energy Density ◽  
Research Progress ◽  
Layered Oxides ◽  
Layered Oxide ◽  
Oxide Cathode

Li- and Mn-rich layered oxides (LMRO) have drawn much attention for application as cathode materials for lithium-ion batteries due to their high-energy density of over 1000 W h kg−1.

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