Room-Temperature Growth of Co(OH)2 Nanosheets on Nanobelt-like Cu(OH)2 Arrays for a Binder-Free High-Performance All-Solid-State Supercapacitor

2021 ◽  
Author(s):  
Biraj Kanta Satpathy ◽  
Satyaroop Patnaik ◽  
Debabrata Pradhan
Keyword(s):  
Solid State ◽  
High Performance ◽  
Room Temperature ◽  
Temperature Growth ◽  
Binder Free

Flexible Fe2 O3 and V2 O5 Nanofibers as Binder-Free Electrodes for High-Performance All-Solid-State Asymmetric Supercapacitors

2018 ◽  
Vol 24 (42) ◽  
pp. 10683-10688 ◽  
Author(s):  
He Jiang ◽  
Hao Niu ◽  
Xue Yang ◽  
Zhiqin Sun ◽  
Fuzhi Li ◽  
...  
Keyword(s):  
Solid State ◽  
High Performance ◽  
Asymmetric Supercapacitors ◽  
Binder Free

scholarly journals High-Performance Polymer Ion Conductors Enabled by Decoupled Fast Ions in Molecular Channels

2020 ◽  
Author(s):  
Liangbing Hu ◽  
Chunpeng Yang ◽  
Qisheng Wu ◽  
Weiqi Xie ◽  
Xin Zhang ◽  
...  
Keyword(s):  
Solid State ◽  
Energy Density ◽  
Ion Transport ◽  
High Performance ◽  
Room Temperature ◽  
Cellulose Nanofibrils ◽  
Ion Conductor ◽  
High Performance Polymer ◽  
Solid State Batteries ◽  
Ion Conductors

Abstract While solid-state batteries are tantalizing for achieving improved safety and higher energy density, solid ion conductors currently available fail to satisfy the rigorous requirements for battery electrolytes and electrodes. Inorganic ion conductors allow fast ion transport, but their rigid and brittle nature prevents good interfacial contact and impedes device integration and stability. Conversely, flexible polymeric ion conductors provide better interfacial compatibility and mechanical tolerance, but suffer from inferior ionic conductivity (< 10−5 S cm−1 at room temperature) due to the coupling of ion transport with the polymer chain motion1-3. In this work, we report a general design strategy for achieving one-dimensional (1D), high-performance polymer solid-state ion conductors through molecular channel engineering, which we demonstrate via Cu2+-coordination of cellulose nanofibrils. The cellulose nanofibrils by themselves are not ionic conductive; however, by opening the molecular channels between the cellulose chains through Cu2+ coordination we are able to achieve a Li-ion conductivity as high as 1.5×10−3 S cm−1 at room temperature—a record among all known polymer ion conductors. This improved conductivity is enabled by a unique Li+ hopping mechanism that is decoupled from the polymer segmental motion. Also benefitted from such decoupling, the cellulose-based ion conductor demonstrates multiple advantages, including a high transference number (0.78 vs. 0.2–0.5 in other polymers2), low activation energy (0.19 eV), and a wide electrochemical stability window (4.5 V) that accommodate both Li metal anode and high-voltage cathodes. Furthermore, we demonstrate this 1D ion conductor not only as a thin, high-conductivity solid-state electrolyte but also as an effective ion-conducting additive for the solid cathode, providing continuous ion transport pathways with a low percolation threshold, which allowed us to utilize the thickest LiFePO4 solid-state cathode ever reported for high energy density. This approach has been validated with other polymers and cations (e.g., Na+ and Zn2+) with record-high conductivities, offering a universal strategy for fast single-ion transport in polymer matrices, with significance that could go far beyond safe, high-performance solid-state batteries.

A colossal dielectric constant of an amorphous TiO2:(Nb, In) film with low loss fabrication at room temperature

2014 ◽  
Vol 2 (33) ◽  
pp. 6790-6795 ◽  
Author(s):  
Zhigang Gai ◽  
Zhenxiang Cheng ◽  
Xiaolin Wang ◽  
Lanling Zhao ◽  
Na Yin ◽  
...  
Keyword(s):  
Dielectric Constant ◽  
Solid State ◽  
High Performance ◽  
Room Temperature ◽  
Dielectric Materials ◽  
Low Loss ◽  
Amorphous Tio2 ◽  
Colossal Dielectric Constant

High-performance dielectric materials continue to arouse considerable interest due to their application in the field of solid state capacitors.

Faradic redox active material of Cu7S4 nanowires with a high conductance for flexible solid state supercapacitors

Nanoscale ◽  
2015 ◽  
Vol 7 (32) ◽  
pp. 13610-13618 ◽  
Author(s):  
Muhammad Sufyan Javed ◽  
Shuge Dai ◽  
Mingjun Wang ◽  
Yi Xi ◽  
Qiang Lang ◽  
...  
Keyword(s):  
Solid State ◽  
Carbon Fiber ◽  
High Performance ◽  
Active Material ◽  
Carbon Fiber Fabric ◽  
Redox Active ◽  
Binder Free ◽  
Fiber Fabric ◽  
High Conductance

The high Faradic redox active material of Cu7S4-NWs coated on a carbon fiber fabric is directly used as a binder-free electrode for a high performance flexible solid state supercapacitor.

Progress and Perspective of All-Solid-State Lithium Batteries with High Performance at Room Temperature

2020 ◽  
Vol 34 (11) ◽  
pp. 13456-13472
Author(s):  
Likun Chen ◽  
Yan-Fei Huang ◽  
Jiabin Ma ◽  
Huajin Ling ◽  
Feiyu Kang ◽  
...  
Keyword(s):  
Solid State ◽  
Lithium Batteries ◽  
High Performance ◽  
Room Temperature
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