Ni3S2 Nanocomposite Structures Doped with Zn and Co as Long-Lifetime, High-Energy-Density, and Binder-Free Cathodes in Flexible Aqueous Nickel-Zinc Batteries

2021 ◽  
Author(s):  
Yang Zhou ◽  
Xin Tong ◽  
Ning Pang ◽  
Yanping Deng ◽  
Chenhuan Yan ◽  
...  
Keyword(s):  
Energy Density ◽  
High Energy ◽  
High Energy Density ◽  
Nickel Zinc ◽  
Binder Free ◽  
Long Lifetime ◽  
Nanocomposite Structures

3D Alumina-Graphene Hybrid Nanofibers as a Binder‐Free Cathode for Rechargeable Li‐S Batteries

2019 ◽  
Vol 799 ◽  
pp. 191-196
Author(s):  
Masoud Taleb ◽  
Roman Ivanov ◽  
Irina Hussainova
Keyword(s):  
Energy Density ◽  
Active Material ◽  
High Energy ◽  
High Energy Density ◽  
Storage Device ◽  
Rechargeable Lithium Batteries ◽  
Alumina Nanofibers ◽  
Electrochemically Active ◽  
Binder Free ◽  
Li Ion

Lithium-sulfur (Li-S) batteries are promising as a next generation energy-storage device because their energy density is higher than that of current Li-ion devices. Alumina nanofibers coated with graphene is electrochemically active material with tunable graphene flakes and surface area. Combination of this material with sulfur leads to an improved initial discharge capacity and cycle stability, probably due to improved electrical and ionic transport during electrochemical reactions. Based on this understanding, the resulting graphene sulfur composite showed high and stable specific capacities up to ∼900 mAh/g after 50 cycles, representing a promising cathode material for rechargeable lithium batteries with high energy density.

High-energy density nanofiber-based solid-state supercapacitors

2016 ◽  
Vol 4 (1) ◽  
pp. 160-166 ◽  
Author(s):  
Daniel W. Lawrence ◽  
Chau Tran ◽  
Arun T. Mallajoysula ◽  
Stephen K. Doorn ◽  
Aditya Mohite ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Solid State ◽  
Energy Density ◽  
Electric Double Layer ◽  
Carbon Nanofiber ◽  
High Energy ◽  
High Energy Density ◽  
Gel Electrolytes ◽  
Porous Carbon Nanofiber ◽  
Binder Free

We have developed binder-free solid-state electric double layer supercapacitors using freestanding porous carbon nanofiber electrodes fabricated using electrospinning and silica-based ionic liquid gel electrolytes.

scholarly journals Binder-Free V2O5 Cathode for High Energy Density Rechargeable Aluminum-Ion Batteries

Nanomaterials ◽  
2020 ◽  
Vol 10 (2) ◽  
pp. 247 ◽  
Author(s):  
Diem ◽  
Fenk ◽  
Bill ◽  
Burghard
Keyword(s):  
Energy Density ◽  
Metal Ion ◽  
Low Cost ◽  
Lithium Ion ◽  
High Energy ◽  
High Energy Density ◽  
Aluminum Ion ◽  
Future Design ◽  
Aluminum Ions ◽  
Binder Free

Nowadays, research on electrochemical storage systems moves into the direction of post-lithium-ion batteries, such as aluminum-ion batteries, and the exploration of suitable materials for such batteries. Vanadium pentoxide (V2O5) is one of the most promising host materials for the intercalation of multivalent ions. Here, we report on the fabrication of a binder-free and self-supporting V2O5 micrometer-thick paper-like electrode material and its use as the cathode for rechargeable aluminum-ion batteries. The electrical conductivity of the cathode was significantly improved by a novel in-situ and self-limiting copper migration approach into the V2O5 structure. This process takes advantage of the dissolution of Cu by the ionic liquid-based electrolyte, as well as the presence of two different accommodation sites in the nanostructured V2O5 available for aluminum-ions and the migrated Cu. Furthermore, the advanced nanostructured cathode delivered a specific discharge capacity of up to ~170 mAh g−1 and the reversible intercalation of Al3+ for more than 500 cycles with a high Coulomb efficiency reaching nearly 100%. The binder-free concept results in an energy density of 74 Wh kg−1, which shows improved energy density in comparison to the so far published V2O5-based cathodes. Our results provide valuable insights for the future design and development of novel binder-free and self-supporting electrodes for rechargeable multivalent metal-ion batteries associating a high energy density, cycling stability, safety and low cost.

An ultra-high energy density flexible asymmetric supercapacitor based on hierarchical fabric decorated with 2D bimetallic oxide nanosheets and MOF-derived porous carbon polyhedra

2019 ◽  
Vol 7 (3) ◽  
pp. 946-957 ◽  
Author(s):  
Muhammad Sufyan Javed ◽  
Nusrat Shaheen ◽  
Shahid Hussain ◽  
Jinliang Li ◽  
Syed Shoaib Ahmad Shah ◽  
...  
Keyword(s):  
Energy Density ◽  
Porous Carbon ◽  
High Energy ◽  
High Energy Density ◽  
Asymmetric Supercapacitor ◽  
Ultra High Energy ◽  
Binder Free

A 2D zinc cobaltite nanosheet is rationally designed and directly utilized as a binder-free electrode for SC with extraordinary high energy density.

Co9S8-Ni3S2/CuMn2O4-NiMn2O4 and MnFe2O4-ZnFe2O4/graphene as binder-free cathode and anode materials for high energy density supercapacitors

2020 ◽  
Vol 381 ◽  
pp. 122640 ◽  
Author(s):  
Chandu V.V. Muralee Gopi ◽  
Rajangam Vinodh ◽  
Sangaraju Sambasivam ◽  
Ihab M. Obaidat ◽  
Saurabh Singh ◽  
...  
Keyword(s):  
Energy Density ◽  
Anode Materials ◽  
High Energy ◽  
High Energy Density ◽  
Binder Free
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