The underestimated charge storage capability of carbon cathodes for advanced alkali metal-ion capacitors

Nanoscale ◽  
2019 ◽  
Vol 11 (24) ◽  
pp. 11445-11450 ◽  
Author(s):  
Hong Tan ◽  
Xiuyi Lin ◽  
Jianqiu Huang ◽  
Jiaqiang Huang ◽  
Maijia Shi ◽  
...  
Keyword(s):  
Energy Density ◽  
Alkali Metal ◽  
Metal Ion ◽  
High Energy ◽  
High Energy Density ◽  
Charge Storage ◽  
Alkali Metal Ion ◽  
Anions And Cations

The synergistic storage of anions and cations results in exceptionally high energy density.

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.

High Energy-Density Electrodes for Alkali-Metal Battery Systems

1977 ◽  
Author(s):  
Wayne L. Worrell ◽  
Samar Basu ◽  
Alan Nagelberg
Keyword(s):  
Energy Density ◽  
Alkali Metal ◽  
High Energy ◽  
High Energy Density ◽  
Battery Systems

scholarly journals A seamlessly integrated device of micro-supercapacitor and wireless charging with ultrahigh energy density and capacitance

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Chang Gao ◽  
Jiancheng Huang ◽  
Yukun Xiao ◽  
Guoqiang Zhang ◽  
Chunlong Dai ◽  
...  
Keyword(s):  
Energy Density ◽  
Power Efficiency ◽  
Metal Ion ◽  
High Energy ◽  
High Energy Density ◽  
Material System ◽  
Wireless Charging ◽  
Ultrahigh Energy ◽  
Circuit Structure ◽  
Integrated Device

AbstractMicrodevice integrating energy storage with wireless charging could create opportunities for electronics design, such as moveable charging. Herein, we report seamlessly integrated wireless charging micro-supercapacitors by taking advantage of a designed highly consistent material system that both wireless coils and electrodes are of the graphite paper. The transferring power efficiency of the wireless charging is 52.8%. Benefitting from unique circuit structure, the intact device displays low resistance and excellent voltage tolerability with a capacitance of 454.1 mF cm−2, superior to state-of-the-art conventional planar micro-supercapacitors. Besides, a record high energy density of 463.1 μWh cm−2 exceeds the existing metal ion hybrid micro-supercapacitors and even commercial thin film battery (350 μWh cm−2). After charging for 6 min, the integrated device reaches up to a power output of 45.9 mW, which can drive an electrical toy car immediately. This work brings an insight for contactless micro-electronics and flexible micro-robotics.

scholarly journals A Seamlessly Integrated Device of Micro-supercapacitor and Wireless Charging with Ultrahigh Energy Density and Capacitance

2020 ◽  
Author(s):  
Chang Gao ◽  
Jiancheng Huang ◽  
Yukun Xiao ◽  
Guoqiang Zhang ◽  
Chunlong Dai ◽  
...  
Keyword(s):  
Energy Density ◽  
Power Efficiency ◽  
Metal Ion ◽  
High Energy ◽  
High Energy Density ◽  
Material System ◽  
Wireless Charging ◽  
Ultrahigh Energy ◽  
Circuit Structure ◽  
Integrated Device

Abstract Microdevice integrating energy storage with wireless charging could provide new opportunities for electronics design, such as moveable charging. Herein, we report a seamlessly integrated wireless charging micro-supercapacitors (IWC-MSCs) by taking advantage of a designed highly consistent material system that both wireless coil and electrode are of the graphite paper. The transferring power efficiency of the wireless charging is 52.8%. Benefitting from unique circuit structure, the intact IWC-MSCs displays low resistance and excellent voltage tolerability with a capacitance of 454.1 mF cm− 2, superior to state-of-the-art conventional planar MSCs. Besides, a record high energy density of 567.6 µWh cm− 2 exceeds the existing metal ion hybrid MSCs and even commercial thin film batteries (350 µWh cm− 2). After charging for 6 minutes, the IWC-MSCs reaches up to a power output of 4.5 mW, which can drive an electrical toy car immediately. The specific electrode layout brings new insight for contactless micro-electronics and flexible micro-robotics.

Atomically thin mesoporous NiCo2O4 grown on holey graphene for enhanced pseudocapacitive energy storage

2020 ◽  
Vol 8 (27) ◽  
pp. 13443-13451 ◽  
Author(s):  
Ding Yuan ◽  
Yuhai Dou ◽  
Li Xu ◽  
Linping Yu ◽  
Ningyan Cheng ◽  
...  
Keyword(s):  
Energy Storage ◽  
Energy Density ◽  
Lithium Ion Batteries ◽  
High Power ◽  
Lithium Ion ◽  
High Energy ◽  
High Energy Density ◽  
Charge Storage ◽  
High Power Density ◽  
Mesoporous Nico2o4

Pseudocapacitive charge storage at the surface/interface of atomically thin mesoporous heterostructures is promising for achieving both high energy density and high power density in lithium-ion batteries (LIBs).

A first-principles investigation of the ScO2 monolayer as the cathode material for alkali metal-ion batteries

2018 ◽  
Vol 6 (7) ◽  
pp. 3171-3180 ◽  
Author(s):  
Zhixiao Liu ◽  
Huiqiu Deng ◽  
Shiguo Zhang ◽  
Wangyu Hu ◽  
Fei Gao
Keyword(s):  
Energy Density ◽  
Alkali Metal ◽  
Cathode Material ◽  
First Principles ◽  
Metal Ion ◽  
Specific Capacity ◽  
High Specific Capacity ◽  
Alkali Metal Ion

The ScO2 monolayer as the cathode material can deliver high specific capacity, voltage and energy density.

Oxygen‐Rich Non‐Graphitic Carbon Derived from Citrus sinensis for High‐Energy Density Pseudocapacitive Charge Storage

2020 ◽  
Vol 5 (47) ◽  
pp. 14993-15003
Author(s):  
Bhumika Tiwari ◽  
Akanksha Joshi ◽  
Priyank Mohan ◽  
Raj Kishore Sharma ◽  
Gurmeet Singh
Keyword(s):  
Energy Density ◽  
Citrus Sinensis ◽  
High Energy ◽  
Graphitic Carbon ◽  
High Energy Density ◽  
Charge Storage

Recent Advances in Two-Dimensional Materials for Alkali Metal Anodes

2021 ◽  
Author(s):  
lianbo ma ◽  
Junxiong Wu ◽  
Guoyin Zhu ◽  
Yao Hui Lv ◽  
Yizhou Zhang ◽  
...  
Keyword(s):  
Energy Density ◽  
Alkali Metal ◽  
High Energy ◽  
High Energy Density ◽  
Two Dimensional ◽  
Redox Potentials ◽  
Practical Applications ◽  
Two Dimensional Materials ◽  
High Theoretical Capacity ◽  
Metal Anodes

Alkali metal anodes (AMAs) with high theoretical capacity, high energy density, and low redox potentials have attracted tremendous attention for high-energy-density batteries. However, their practical applications are hindered by severe...

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