A novel Ni@Ni(OH)2 coaxial core-sheath nanowire membrane for electrochemical energy storage electrodes with high volumetric capacity and excellent rate capability

2015 ◽  
Vol 182 ◽  
pp. 464-473 ◽  
Author(s):  
Shusheng Xu ◽  
Xiaolin Li ◽  
Zhi Yang ◽  
Tao Wang ◽  
Minghan Xu ◽  
...  
Keyword(s):  
Energy Storage ◽  
Rate Capability ◽  
Electrochemical Energy Storage ◽  
Volumetric Capacity ◽  
Electrochemical Energy

scholarly journals Defect-free potassium manganese hexacyanoferrate cathode material for high-performance potassium-ion batteries

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Leqing Deng ◽  
Jiale Qu ◽  
Xiaogang Niu ◽  
Juzhe Liu ◽  
Juan Zhang ◽  
...  
Keyword(s):  
Energy Storage ◽  
Specific Energy ◽  
High Performance ◽  
Rate Capability ◽  
High Energy ◽  
Potassium Ion ◽  
High Energy Density ◽  
Electrochemical Energy Storage ◽  
Metal Anode ◽  
Electrochemical Energy

AbstractPotassium-ion batteries (KIBs) are promising electrochemical energy storage systems because of their low cost and high energy density. However, practical exploitation of KIBs is hampered by the lack of high-performance cathode materials. Here we report a potassium manganese hexacyanoferrate (K2Mn[Fe(CN)6]) material, with a negligible content of defects and water, for efficient high-voltage K-ion storage. When tested in combination with a K metal anode, the K2Mn[Fe(CN)6]-based electrode enables a cell specific energy of 609.7 Wh kg−1 and 80% capacity retention after 7800 cycles. Moreover, a K-ion full-cell consisting of graphite and K2Mn[Fe(CN)6] as anode and cathode active materials, respectively, demonstrates a specific energy of 331.5 Wh kg−1, remarkable rate capability, and negligible capacity decay for 300 cycles. The remarkable electrochemical energy storage performances of the K2Mn[Fe(CN)6] material are attributed to its stable frameworks that benefit from the defect-free structure.

Electrochemical energy storage by aluminum as a lightweight and cheap anode/charge carrier

2017 ◽  
Vol 1 (6) ◽  
pp. 1246-1264 ◽  
Author(s):  
Ali Eftekhari ◽  
Pablo Corrochano
Keyword(s):  
Energy Storage ◽  
Charge Carrier ◽  
Alkali Metals ◽  
Rechargeable Batteries ◽  
Electrochemical Energy Storage ◽  
Ion Transfer ◽  
Safety Risk ◽  
Volumetric Capacity ◽  
Earth's Crust ◽  
Electrochemical Energy

Metals such as Li, Na, Mg, etc. are the basis of promising rechargeable batteries, but Al has unique advantages: (i) the most abundant metal in the Earth's crust, (ii) trivalent charge carrier storing three times more charge with each ion transfer compared to Li, (iii) the volumetric capacity of the Al anode is four times higher than that of Li while their gravimetric capacities are similar, (iv) employing a metallic Al anode is not a big safety risk as it is for alkali metals.

Carbothermal conversion of boric acid into boron-oxy-carbide nanostructures for high-power supercapacitors

2021 ◽  
Author(s):  
Dhanasekar Kesavan ◽  
Vimal Kumar Mariappan ◽  
Karthikeyan Krishnamoorthy ◽  
Sang-Jae Kim
Keyword(s):  
Energy Storage ◽  
Boric Acid ◽  
High Power ◽  
Electrochemical Energy Storage ◽  
Energy Storage Devices ◽  
Storage Devices ◽  
Carbothermal Method ◽  
Electrochemical Energy

In this study, we report a facile carbothermal method for the preparation of boron-oxy-carbide (BOC) nanostructures and explore their properties towards electrochemical energy storage devices.

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