Potassium Pre-Inserted K1.04Mn8O16 Cathode Materials for Aqueous Li-Ion and Na-Ion Hybrid Capacitors

2019 ◽  
Author(s):  
Yamin Zhang ◽  
Lina Chen ◽  
Chongyang Hao ◽  
Xiaowen Zheng ◽  
Yixuan Guo ◽  
...  
Keyword(s):  
Cycling Performance ◽  
High Energy ◽  
High Energy Density ◽  
Potassium Ions ◽  
Tunnel Structure ◽  
Hybrid Supercapacitor ◽  
Hybrid Supercapacitors ◽  
Li Ion ◽  
Power Densities ◽  
Hybrid Capacitors

For the applications of aqueous Li-ion hybrid capacitors and Na-ion hybrid capacitors, potassium ions are pre-inserted into MnO<sub>2</sub> tunnel structure, the as-prepared K<sub>1.04</sub>Mn<sub>8</sub>O<sub>16</sub> materials consist of <a>nanoparticles</a> and nanorods were prepared by facile high-temperature solid-state reaction. <a></a>The as-prepared materials were well studied andthey show outstanding electrochemical behavior. We assembled hybrid supercapacitors with commercial activated carbon (YEC-8A) as anode and K<sub>1.04</sub>Mn<sub>8</sub>O<sub>16 </sub>as cathode. It has high energy densities and power densities. Li-ion capacitors reach a high energy density of 127.61 Wh kg<sup>-1 </sup>at the power density of 99.86 W kg<sup>-1</sup> and Na-ion capacitor obtains 170.96 Wh kg<sup>-1 </sup>at 133.79 W kg<sup>-1</sup>. In addition, the <a>hybrid supercapacitor</a>s demonstrate excellent cycling performance which maintain 97 % capacitance retention for Li-ion capacitor and 85 % for Na-ion capacitor after 10,000 cycles.

Potassium Pre-Inserted K1.04Mn8O16 Cathode Materials for Aqueous Li-Ion and Na-Ion Hybrid Capacitors

2019 ◽  
Author(s):  
Yamin Zhang ◽  
Lina Chen ◽  
Chongyang Hao ◽  
Xiaowen Zheng ◽  
Yixuan Guo ◽  
...  
Keyword(s):  
Cycling Performance ◽  
High Energy ◽  
High Energy Density ◽  
Potassium Ions ◽  
Tunnel Structure ◽  
Hybrid Supercapacitor ◽  
Hybrid Supercapacitors ◽  
Li Ion ◽  
Power Densities ◽  
Hybrid Capacitors

For the applications of aqueous Li-ion hybrid capacitors and Na-ion hybrid capacitors, potassium ions are pre-inserted into MnO<sub>2</sub> tunnel structure, the as-prepared K<sub>1.04</sub>Mn<sub>8</sub>O<sub>16</sub> materials consist of <a>nanoparticles</a> and nanorods were prepared by facile high-temperature solid-state reaction. <a></a>The as-prepared materials were well studied andthey show outstanding electrochemical behavior. We assembled hybrid supercapacitors with commercial activated carbon (YEC-8A) as anode and K<sub>1.04</sub>Mn<sub>8</sub>O<sub>16 </sub>as cathode. It has high energy densities and power densities. Li-ion capacitors reach a high energy density of 127.61 Wh kg<sup>-1 </sup>at the power density of 99.86 W kg<sup>-1</sup> and Na-ion capacitor obtains 170.96 Wh kg<sup>-1 </sup>at 133.79 W kg<sup>-1</sup>. In addition, the <a>hybrid supercapacitor</a>s demonstrate excellent cycling performance which maintain 97 % capacitance retention for Li-ion capacitor and 85 % for Na-ion capacitor after 10,000 cycles.

Rechargeable Na/Ni batteries based on the Ni(OH)2/NiOOH redox couple with high energy density and good cycling performance

2019 ◽  
Vol 7 (4) ◽  
pp. 1564-1573 ◽  
Author(s):  
Seungyoung Park ◽  
Ziyauddin Khan ◽  
Tae Joo Shin ◽  
Youngsik Kim ◽  
Hyunhyub Ko
Keyword(s):  
Energy Density ◽  
Storage Systems ◽  
Low Cost ◽  
Cycling Performance ◽  
High Energy ◽  
High Energy Density ◽  
Rechargeable Battery ◽  
Li Ion Batteries ◽  
Battery Systems ◽  
Li Ion

Rechargeable battery systems that use Na-based anodes as alternatives to Li-ion batteries are highly desirable for grid-scale energy storage systems owing to the high abundance and low cost of Na.

Novel zinc–iodine hybrid supercapacitors with a redox iodide ion electrolyte and B, N dual-doped carbon electrode exhibit boosted energy density

2019 ◽  
Vol 7 (42) ◽  
pp. 24400-24407 ◽  
Author(s):  
Lu Han ◽  
Hailong Huang ◽  
Junfeng Li ◽  
Zhongli Yang ◽  
Xinlu Zhang ◽  
...  
Keyword(s):  
Energy Density ◽  
High Energy ◽  
High Energy Density ◽  
Carbon Electrode ◽  
Hybrid Supercapacitor ◽  
Hybrid Supercapacitors ◽  
Iodide Ion

A novel high-energy-density zinc–iodine hybrid supercapacitor was designed via the introduction of a redox iodide ion electrolyte and B, N dual-doped carbon electrode.

scholarly journals Reviewing the Safe Shipping of Lithium-Ion and Sodium-Ion Cells: A Materials Chemistry Perspective

2021 ◽  
Vol 2021 ◽  
pp. 1-12
Author(s):  
Ashish Rudola ◽  
Christopher J. Wright ◽  
Jerry Barker
Keyword(s):  
Lithium Ion ◽  
Current Collector ◽  
Cycling Performance ◽  
High Energy ◽  
Sodium Ion ◽  
High Energy Density ◽  
Materials Chemistry ◽  
Li Ion Batteries ◽  
International Regulations ◽  
Li Ion

High energy density lithium-ion (Li-ion) batteries are commonly used nowadays. Three decades’ worth of intense research has led to a good understanding on several aspects of such batteries. But, the issue of their safe storage and transportation is still not widely understood from a materials chemistry perspective. Current international regulations require Li-ion cells to be shipped at 30% SOC (State of Charge) or lower. In this article, the reasons behind this requirement for shipping Li-ion batteries are firstly reviewed and then compared with those of the analogous and recently commercialized sodium-ion (Na-ion) batteries. For such alkali-ion batteries, the safest state from their active materials viewpoint is at 0 V or zero energy, and this should be their ideal state for storage/shipping. However, a “fully discharged” Li-ion cell used most commonly, composed of graphite-based anode on copper current collector, is not actually at 0 V at its rated 0% SOC, contrary to what one might expect—the detailed mechanism behind the reason for this, namely, copper dissolution, and how it negatively affects cycling performance and cell safety, will be summarized herein. It will be shown that Na-ion cells, capable of using a lighter and cheaper aluminum current collector on the anode, can actually be safely discharged to 0 V (true 0% SOC) and beyond, even to reverse polarity (negative voltages). It is anticipated that this article spurs further research on the 0 V capability of Na-ion systems, with some suggestions for future studies provided.

scholarly journals Preparation of a NbN/graphene nanocomposite by solution impregnation and its application in high-performance Li-ion hybrid capacitors

RSC Advances ◽  
2017 ◽  
Vol 7 (32) ◽  
pp. 19967-19975 ◽  
Author(s):  
Zhen-Kun Chen ◽  
Jun-Wei Lang ◽  
Ling-Yang Liu ◽  
Ling-Bin Kong
Keyword(s):  
Energy Density ◽  
Power Density ◽  
High Performance ◽  
High Energy ◽  
High Energy Density ◽  
Graphene Nanocomposite ◽  
Li Ion ◽  
Hybrid Capacitors

Freestanding NbN/graphene papers were used in Li-ion hybrid capacitors and exhibit high energy density and power density.

scholarly journals Wire-Shaped 3D-Hybrid Supercapacitors as Substitutes for Batteries

2020 ◽  
Vol 12 (1) ◽  
Author(s):  
Kyeong-Nam Kang ◽  
Ananthakumar Ramadoss ◽  
Jin-Wook Min ◽  
Jong-Chul Yoon ◽  
Deokjung Lee ◽  
...  
Keyword(s):  
Energy Density ◽  
Active Sites ◽  
Rate Capability ◽  
High Energy ◽  
High Energy Density ◽  
Easy Access ◽  
Nickel Wire ◽  
Hybrid Supercapacitor ◽  
Hybrid Supercapacitors ◽  
Volumetric Capacitance

Abstract We report a wire-shaped three-dimensional (3D)-hybrid supercapacitor with high volumetric capacitance and high energy density due to an interconnected 3D-configuration of the electrode allowing for large number of electrochemical active sites, easy access of electrolyte ions, and facile charge transport for flexible wearable applications. The interconnected and compact electrode delivers a high volumetric capacitance (gravimetric capacitance) of 73 F cm−3 (2446 F g−1), excellent rate capability, and cycle stability. The 3D-nickel cobalt-layered double hydroxide onto 3D-nickel wire (NiCo LDH/3D-Ni)//the 3D-manganese oxide onto 3D-nickel wire (Mn3O4/3D-Ni) hybrid supercapacitor exhibits energy density of 153.3 Wh kg−1 and power density of 8810 W kg−1. The red light-emitting diode powered by the as-prepared hybrid supercapacitor can operate for 80 min after being charged for tens of seconds and exhibit excellent electrochemical stability under various deformation conditions. The results verify that such wire-shaped 3D-hybrid supercapacitors are promising alternatives for batteries with long charge–discharge times, for smart wearable and implantable devices.

scholarly journals Ultra-High Energy Density Hybrid Supercapacitors Using MnO2/Reduced Graphene Oxide Hybrid Nanoscrolls

Nanomaterials ◽  
2020 ◽  
Vol 10 (10) ◽  
pp. 2049 ◽  
Author(s):  
Janardhanan. R. Rani ◽  
Ranjith Thangavel ◽  
Minjae Kim ◽  
Yun Sung Lee ◽  
Jae-Hyung Jang
Keyword(s):  
Graphene Oxide ◽  
Energy Storage ◽  
Energy Density ◽  
Storage Systems ◽  
High Energy ◽  
High Energy Density ◽  
Ultra High Energy ◽  
Hybrid Supercapacitor ◽  
Hybrid Supercapacitors ◽  
Reduced Graphene

Manganese oxide (MnO2) is a promising material for supercapacitor applications, with a theoretical ultra-high energy density of 308 Wh/kg. However, such ultra-high energy density has not been achieved experimentally in MnO2-based supercapacitors because of several practical issues, such as low electrical conductivity of MnO2, incomplete utilization of MnO2, and dissolution of MnO2. The present study investigates the potential of MnO2/reduced graphene oxide (rGO) hybrid nanoscroll (GMS) structures as electrode material for overcoming the difficulties and for developing ultra-high-energy storage systems. A hybrid supercapacitor, comprising MnO2/rGO nanoscrolls as anode material and activated carbon (AC) as a cathode, is fabricated. The GMS/AC hybrid supercapacitor exhibited enhanced energy density, superior rate performance, and promising Li storage capability that bridged the energy–density gap between conventional Li-ion batteries (LIBs) and supercapacitors. The fabricated GMS/AC hybrid supercapacitor demonstrates an ultra-high lithium discharge capacity of 2040 mAh/g. The GMS/AC cell delivered a maximum energy density of 105.3 Wh/kg and a corresponding power density of 308.1 W/kg. It also delivered an energy density of 42.77 Wh/kg at a power density as high as 30,800 W/kg. Our GMS/AC cell’s energy density values are very high compared with those of other reported values of graphene-based hybrid structures. The GMS structures offer significant potential as an electrode material for energy-storage systems and can also enhance the performance of the other electrode materials for LIBs and hybrid supercapacitors.

Hierarchical Cu2S@NiCo-LDH double-shelled nanotube arrays with enhanced electrochemical performance for hybrid supercapacitors

2020 ◽  
Vol 8 (42) ◽  
pp. 22163-22174
Author(s):  
Ze Yuan ◽  
Haiyan Wang ◽  
Junling Shen ◽  
Pengcheng Ye ◽  
Jiqiang Ning ◽  
...  
Keyword(s):  
Energy Density ◽  
Electrochemical Performance ◽  
Rate Capability ◽  
High Energy ◽  
High Energy Density ◽  
Nanotube Arrays ◽  
Hybrid Supercapacitor ◽  
Hybrid Supercapacitors ◽  
Enhanced Electrochemical Performance

Hierarchical Cu2S@NiCo-LDH double-shelled nanotube arrays (Cu2S@NiCo-LDH DSNAs) are prepared by a multi-step approach, and the fabricated Cu2S@NiCo-LDH DSNAs//NPC hybrid supercapacitor exhibits a high energy density and remarkable rate capability.

scholarly journals Improved pseudocapacitive charge storage in highly ordered mesoporous TiO2/carbon nanocomposites as high-performance Li-ion hybrid supercapacitor anodes

RSC Advances ◽  
2019 ◽  
Vol 9 (65) ◽  
pp. 37882-37888
Author(s):  
Yujin Lee ◽  
Seoa Kim ◽  
Jeong Han Lee ◽  
Kwang Chul Roh ◽  
Eunho Lim ◽  
...  
Keyword(s):  
Self Assembly ◽  
High Performance ◽  
High Energy ◽  
Hybrid Supercapacitor ◽  
Carbon Nanocomposites ◽  
Hybrid Supercapacitors ◽  
Ordered Mesoporous ◽  
Pseudocapacitive Behavior ◽  
Li Ion ◽  
Carbon Nanocomposite

A mesoporous TiO2/carbon nanocomposite prepared by block copolymer self-assembly improves pseudocapacitive behavior and achieves high energy/power density Li-ion hybrid supercapacitors.

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