A two-step method for preparing Li4Ti5O12–graphene as an anode material for lithium-ion hybrid capacitors

RSC Advances ◽  
2015 ◽  
Vol 5 (114) ◽  
pp. 94361-94368 ◽  
Author(s):  
Nansheng Xu ◽  
Xianzhong Sun ◽  
Xiong Zhang ◽  
Kai Wang ◽  
Yanwei Ma
Keyword(s):  
Energy Density ◽  
Anode Material ◽  
Total Mass ◽  
Lithium Ion ◽  
Step Method ◽  
Hybrid Capacitors

Li4Ti5O12–graphene anode was prepared by a two-step method and applied to a lithium-ion hybrid capacitor which could deliver an energy density of 6.6 W h kg−1 based on the total mass of the whole device.

Highly Oriented Graphene Sponge Electrode for Ultra High Energy Density Lithium Ion Hybrid Capacitors

2016 ◽  
Vol 8 (38) ◽  
pp. 25297-25305 ◽  
Author(s):  
Wook Ahn ◽  
Dong Un Lee ◽  
Ge Li ◽  
Kun Feng ◽  
Xiaolei Wang ◽  
...  
Keyword(s):  
Energy Density ◽  
Lithium Ion ◽  
High Energy ◽  
High Energy Density ◽  
Ultra High Energy ◽  
Graphene Sponge ◽  
Hybrid Capacitors

Porous niobium nitride as a capacitive anode material for advanced Li-ion hybrid capacitors with superior cycling stability

2016 ◽  
Vol 4 (25) ◽  
pp. 9760-9766 ◽  
Author(s):  
Peiyu Wang ◽  
Rutao Wang ◽  
Junwei Lang ◽  
Xu Zhang ◽  
Zhenkun Chen ◽  
...  
Keyword(s):  
Anode Material ◽  
Lithium Ion ◽  
Niobium Nitride ◽  
Cycling Stability ◽  
Li Ion Batteries ◽  
Li Ion ◽  
Superior Cycling Stability ◽  
Hybrid Capacitors

Lithium-ion hybrid capacitors (LIHCs) are receiving intense interest because they can combine the distinctive advantages of Li-ion batteries and supercapacitors.

A fast and efficient pre-doping approach to high energy density lithium-ion hybrid capacitors

2014 ◽  
Vol 2 (26) ◽  
pp. 10029-10033 ◽  
Author(s):  
Minho Kim ◽  
Fan Xu ◽  
Jin Hong Lee ◽  
Cheolsoo Jung ◽  
Soon Man Hong ◽  
...  
Keyword(s):  
Energy Density ◽  
Lithium Ion ◽  
High Energy ◽  
High Energy Density ◽  
Efficient Process ◽  
Hybrid Capacitors

We demonstrate that the internal short (IS) approach is a fast and efficient process for lithium pre-doping in lithium-ion capacitors.

scholarly journals Facile synthesis of Camellia oleifera shell-derived hard carbon as an anode material for lithium-ion batteries

RSC Advances ◽  
2019 ◽  
Vol 9 (35) ◽  
pp. 20424-20431 ◽  
Author(s):  
Beibei Ma ◽  
Yewei Huang ◽  
Zhenzhen Nie ◽  
Xiaobin Qiu ◽  
Dawei Su ◽  
...  
Keyword(s):  
Lithium Ion Batteries ◽  
Anode Material ◽  
Porous Carbon ◽  
Lithium Ion ◽  
Camellia Oleifera ◽  
Hard Carbon ◽  
Facile Synthesis ◽  
Step Method ◽  
Camellia Oleifera Shell

Bio-waste Camellia oleifera shells (COS) are converted into porous carbon by a two-step method.

Application of super-concentrated phosphonium based ionic liquid electrolyte for anode-free lithium metal batteries

2021 ◽  
Author(s):  
Thushan Pathirana ◽  
Robert Kerr ◽  
Maria Forsyth ◽  
Patrick C. Howlett
Keyword(s):  
Ionic Liquid ◽  
Energy Density ◽  
Anode Material ◽  
Specific Energy ◽  
Lithium Ion ◽  
Liquid Electrolyte ◽  
Cell Assembly ◽  
Lithium Metal ◽  
Ionic Liquid Electrolyte ◽  
Lithium Metal Batteries

Anode-free lithium metal batteries based on ionic liquid electrolytes offer an excellent pathway to significantly boost the energy density and specific energy over current lithium-ion technology by eliminating the anode material during cell assembly.

Three-dimensionally ordered porous TiNb2O7 nanotubes: a superior anode material for next generation hybrid supercapacitors

2015 ◽  
Vol 3 (32) ◽  
pp. 16785-16790 ◽  
Author(s):  
Hongsen Li ◽  
Laifa Shen ◽  
Jie Wang ◽  
Shan Fang ◽  
Yingxia Zhang ◽  
...  
Keyword(s):  
Energy Density ◽  
Lithium Ion Batteries ◽  
Power Density ◽  
Anode Material ◽  
Lithium Ion ◽  
Hybrid Supercapacitor ◽  
Hybrid Supercapacitors ◽  
Cycling Performances ◽  
Ordered Porous ◽  
Generation Hybrid

A novel hybrid supercapacitor is successfully constructed based on the 3D ordered porous TiNb2O7 electrode (anode) and graphene grass electrode (cathode). In combination with the advantages from the lithium ion batteries and supercapacitors, this device shows superior energy density and power density with improved cycling performances.

Electrospun LiFexMn1-xPO4/C Composite Nanofibers for Lithium-Ion Batteries

2021 ◽  
Vol 58 (2) ◽  
pp. 211-219
Author(s):  
Ozan Toprakci
Keyword(s):  
Energy Density ◽  
Electrochemical Performance ◽  
Cathode Materials ◽  
Composite Nanofibers ◽  
Active Material ◽  
Lithium Ion ◽  
Li Ion Batteries ◽  
Step Method ◽  
Long Cycle Life ◽  
Li Ion

Since the commercialization of Li-ion batteries by Sony in 1990, the performance of cathode materials used in Li-ion batteries has improved significantly. However, Li-ion batteries cannot respond to the needs of the energy storage market in terms of energy density. In order to increase theoretical energy density of active materials, molar mass of the active material should be decreased, or electron number participating per reaction or reaction potential should be increased. In this study, it was aimed to produce cathode materials for Li-ion batteries in the form of composite nanofibers via electrospinning method. For this purpose, porous LiFexMn1-xPO4/C composite nanofibers (1 ] x ] 0) were synthesized with a scalable, two-step method (electrospinning and subsequent heat treatment). The morphological, structural and electrochemical properties of the LiFexMn1-xPO4/C composite nanofibers were determined by scanning electron microscope, X-ray diffraction and galvanostatic charge/discharge tests. Cathodes made of LiFexMn1-xPO4/C composite nanofibers showed various advantages such as long cycle life, improved electrochemical performance etc. due to the presence of carbon and LiFexMn1-xPO4 in the composite structure. With the addition of Mn to the structure of LiFePO4/C composite nanofibers, electrochemical performance was improved. LiFe0.8Mn0.2PO4/C composite nanofibers showed the best performance in terms of energy density among the samples. Further increment in Mn/Fe ratio resulted declining electrochemical capacity and energy density.

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