A quasi-solid-state Li-ion capacitor with high energy density based on Li3VO4/carbon nanofibers and electrochemically-exfoliated graphene sheets

2017 ◽  
Vol 5 (28) ◽  
pp. 14922-14929 ◽  
Author(s):  
Faxing Wang ◽  
Zaichun Liu ◽  
Xinhai Yuan ◽  
Jun Mo ◽  
Chunyang Li ◽  
...  
Keyword(s):  
Solid State ◽  
Energy Density ◽  
Carbon Nanofibers ◽  
High Energy ◽  
High Energy Density ◽  
Graphene Sheets ◽  
Ultrahigh Energy ◽  
Exfoliated Graphene ◽  
Li Ion ◽  
Charge Discharge

The quasi-solid-state Li-ion capacitor demonstrates an ultrahigh energy density of 110 W h kg−1and rapid charge/discharge capability within 2 min.

scholarly journals N-Enriched carbon nanofibers for high energy density supercapacitors and Li-ion batteries

RSC Advances ◽  
2019 ◽  
Vol 9 (62) ◽  
pp. 36075-36081 ◽  
Author(s):  
Sayali B. Kale ◽  
Manjiri A. Mahadadalkar ◽  
Chang Hyo Kim ◽  
Yoong Ahm Kim ◽  
Manish S. Jayswal ◽  
...  
Keyword(s):  
Energy Density ◽  
Carbon Nanofibers ◽  
High Energy ◽  
High Energy Density ◽  
Li Ion Batteries ◽  
One Step ◽  
Li Ion

Nitrogen enriched carbon nanofibers have been obtained by one-step carbonization/activation of PAN-based nanofibers with various concentrations of melamine at 800 °C under a N2 atmosphere.

scholarly journals Electrolytes for Energy Dense Batteries

2020 ◽  
Author(s):  
Rana Mohtadi
Keyword(s):  
Solid State ◽  
Energy Density ◽  
Storage Systems ◽  
High Energy ◽  
High Energy Density ◽  
Li Ion Batteries ◽  
Future Perspectives ◽  
Research Directions ◽  
Electrochemical Storage ◽  
Li Ion

The ever-rising demands for energy dense electrochemical storage systems have been driving interests in beyond Li-ion batteries such as those based on lithium and magnesium metals. These high energy density batteries suffer from several challenges, several of which stem from the flammability/volatility of the electrolytes and/or instability of the electrolyte with either the negative, positive electrode or both. Recently, hydride-based electrolytes have been paving a path towards overcoming these issues. Namely, highly performing solid state electrolytes have been reported and several key challenges in multivalent batteries were overcome. In this review, the classes of hydride-based electrolytes reported for energy dense batteries are discussed. Future perspectives are presented to guide research directions in this field.

scholarly journals Self-Supported Sheets-on-Wire CuO@Ni(OH)2/Zn(OH)2 Nanoarrays for High-Performance Flexible Quasi-Solid-State Supercapacitor

Processes ◽  
2021 ◽  
Vol 9 (4) ◽  
pp. 680
Author(s):  
Jianyang Jiang ◽  
Xiong Xiong Liu ◽  
Jiayu Han ◽  
Ke Hu ◽  
Jun Song Chen
Keyword(s):  
Solid State ◽  
Energy Density ◽  
Electrode Materials ◽  
Red Light ◽  
High Capacity ◽  
High Energy ◽  
High Rate ◽  
High Energy Density ◽  
Supercapacitor Application ◽  
Charge Discharge

Transition metal hydroxides have attracted a lot of attention as the electrode materials for supercapacitors owing to their relatively high theoretical capacity, low cost, and facile preparation methods. However, their low intrinsic conductivity deteriorates their high-rate performance and cycling stability. Here, self-supported sheets-on-wire CuO@Ni(OH)2/Zn(OH)2 (CuO@NiZn) composite nanowire arrays were successfully grown on copper foam. The CuO nanowire backbone provided enhanced structural stability and a highly efficient electron-conducting pathway from the active hydroxide nanosheets to the current collector. The resulting CuO@NiZn as the battery-type electrode for supercapacitor application delivered a high capacity of 306.2 mAh g−1 at a current density of 0.8 A g−1 and a very stable capacity of 195.1 mAh g−1 at 4 A g−1 for 10,000 charge–discharge cycles. Furthermore, a quasi-solid-state hybrid supercapacitor (qss HSC) was assembled with active carbon, exhibiting 125.3 mAh g−1 at 0.8 A g−1 and a capacity of 41.6 mAh g−1 at 4 A g−1 for 5000 charge–discharge cycles. Furthermore, the qss HSC was able to deliver a high energy density of about 116.0 Wh kg−1. Even at the highest power density of 7.8 kW kg−1, an energy density of 20.5 Wh kg−1 could still be obtained. Finally, 14 red light-emitting diodes were lit up by a single qss HSC at different bending states, showing good potential for flexible energy storage applications.

Tailoring the pore structure of carbon nanofibers for achieving ultrahigh-energy-density supercapacitors using ionic liquids as electrolytes

2016 ◽  
Vol 4 (13) ◽  
pp. 4763-4770 ◽  
Author(s):  
Chang Hyo Kim ◽  
Jae-Hyung Wee ◽  
Yoong Ahm Kim ◽  
Kap Seung Yang ◽  
Cheol-Min Yang
Keyword(s):  
Ionic Liquid ◽  
Ionic Liquids ◽  
Energy Density ◽  
Pore Structure ◽  
Carbon Nanofibers ◽  
High Energy ◽  
High Energy Density ◽  
Ultra High Energy ◽  
Ultrahigh Energy ◽  
Carbon Based

Carbon based supercapacitor with ultra-high energy density was developed by using pore structure tailored carbon nanofibers and ionic liquid.

High Energy Density Hybrid Solid-State Li-Ion Batteries Enabled by a Gel/Ceramic/Gel Sandwich Electrolyte

2020 ◽  
Vol 3 (6) ◽  
pp. 5113-5119
Author(s):  
Zihao Chen ◽  
Baichuan Han ◽  
Yuansheng Shi ◽  
Senhao Wang ◽  
Zhizhen Zhang ◽  
...  
Keyword(s):  
Solid State ◽  
Energy Density ◽  
High Energy ◽  
High Energy Density ◽  
Li Ion Batteries ◽  
Li Ion

scholarly journals Beyond Typical Electrolytes for Energy Dense Batteries

Molecules ◽  
2020 ◽  
Vol 25 (8) ◽  
pp. 1791
Author(s):  
Rana Mohtadi
Keyword(s):  
Solid State ◽  
Energy Density ◽  
Storage Systems ◽  
High Energy ◽  
High Energy Density ◽  
Li Ion Batteries ◽  
Future Perspectives ◽  
Research Directions ◽  
Electrochemical Storage ◽  
Li Ion

The ever-rising demands for energy dense electrochemical storage systems have been driving interests in beyond Li-ion batteries such as those based on lithium and magnesium metals. These high energy density batteries suffer from several challenges, several of which stem from the flammability/volatility of the electrolytes and/or instability of the electrolytes with either the negative, positive electrode or both. Recently, hydride-based electrolytes have been paving the way towards overcoming these issues. Namely, highly performing solid-state electrolytes have been reported and several key challenges in multivalent batteries were overcome. In this review, the classes of hydride-based electrolytes reported for energy dense batteries are discussed. Future perspectives are presented to guide research directions in this field.

New high-energy-density GeTe-based anodes for Li-ion batteries

2019 ◽  
Vol 7 (7) ◽  
pp. 3278-3288 ◽  
Author(s):  
Ki-Hun Nam ◽  
Geon-Kyu Sung ◽  
Jeong-Hee Choi ◽  
Jong-Sang Youn ◽  
Ki-Joon Jeon ◽  
...  
Keyword(s):  
Solid State ◽  
Energy Density ◽  
Lithium Ion Batteries ◽  
Lithium Ion ◽  
High Energy ◽  
High Energy Density ◽  
Li Ion Batteries ◽  
Electrochemical Behaviors ◽  
Germanium Telluride ◽  
Li Ion

A layered germanium telluride (GeTe) and its C-modified nanocomposite (GeTe–C) are synthesized by a simple solid-state synthesis technique, and their electrochemical behaviors for rechargeable lithium-ion batteries (LIBs) are evaluated.

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