Ultra-durable two-electrode Zn–air secondary batteries based on bifunctional titania nanocatalysts: a Co2+ dopant boosts the electrochemical activity

2016 ◽  
Vol 4 (20) ◽  
pp. 7841-7847 ◽  
Author(s):  
Li-Na Han ◽  
Li-Bing Lv ◽  
Qian-Cheng Zhu ◽  
Xiao Wei ◽  
Xin-Hao Li ◽  
...  
Keyword(s):  
Energy Density ◽  
High Stability ◽  
High Energy ◽  
Electrochemical Activity ◽  
High Energy Density ◽  
Air Cathode ◽  
Air Battery ◽  
Co Doped

A two-electrode Zn–air battery made of the Co-doped TiO2 based air cathode offered superior high energy density and ultra-high stability.

High energy density supercapacitor based on N/B co-doped graphene nanoarchitectures and ionic liquid electrolyte

Ionics ◽  
2019 ◽  
Vol 25 (9) ◽  
pp. 4351-4360 ◽  
Author(s):  
Zhongliang Yu ◽  
Jiahe Zhang ◽  
Chunxian Xing ◽  
Lei Hu ◽  
Lili Wang ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Energy Density ◽  
High Energy ◽  
Liquid Electrolyte ◽  
High Energy Density ◽  
Ionic Liquid Electrolyte ◽  
Doped Graphene ◽  
Co Doped

A rechargeable zinc-air battery based on zinc peroxide chemistry

Science ◽  
2020 ◽  
Vol 371 (6524) ◽  
pp. 46-51
Author(s):  
Wei Sun ◽  
Fei Wang ◽  
Bao Zhang ◽  
Mengyi Zhang ◽  
Verena Küpers ◽  
...  
Keyword(s):  
Atmospheric Carbon Dioxide ◽  
Ambient Air ◽  
High Energy ◽  
Zinc Ion ◽  
High Energy Density ◽  
Air Cathode ◽  
Reversible Redox ◽  
Air Battery ◽  
Zinc Peroxide ◽  
Zinc Air Batteries

Rechargeable alkaline zinc-air batteries promise high energy density and safety but suffer from the sluggish 4 electron (e−)/oxygen (O2) chemistry that requires participation of water and from the electrochemical irreversibility originating from parasitic reactions caused by caustic electrolytes and atmospheric carbon dioxide. Here, we report a zinc-O2/zinc peroxide (ZnO2) chemistry that proceeds through a 2e−/O2 process in nonalkaline aqueous electrolytes, which enables highly reversible redox reactions in zinc-air batteries. This ZnO2 chemistry was made possible by a water-poor and zinc ion (Zn2+)–rich inner Helmholtz layer on the air cathode caused by the hydrophobic trifluoromethanesulfonate anions. The nonalkaline zinc-air battery thus constructed not only tolerates stable operations in ambient air but also exhibits substantially better reversibility than its alkaline counterpart.

scholarly journals Research on high energy density portable power supply based on metal-air battery

2021 ◽  
Vol 1983 (1) ◽  
pp. 012064
Author(s):  
Changfu Wang ◽  
Yaohui Wang ◽  
Bin Zhang ◽  
Hui Sun ◽  
Wanli Xu
Keyword(s):  
Energy Density ◽  
Power Supply ◽  
High Energy ◽  
High Energy Density ◽  
Portable Power ◽  
Air Battery

scholarly journals A high energy density all solid-state tungsten–air battery

2013 ◽  
Vol 49 (47) ◽  
pp. 5357 ◽  
Author(s):  
Xuan Zhao ◽  
Xue Li ◽  
Yunhui Gong ◽  
Nansheng Xu ◽  
Kevin Romito ◽  
...  
Keyword(s):  
Solid State ◽  
Energy Density ◽  
High Energy ◽  
High Energy Density ◽  
Air Battery

scholarly journals Lithium-Air Batteries: TiC MXene High Energy Density Cathode for Lithium-Air Battery (Adv. Theory Simul. 9/2018)

2018 ◽  
Vol 1 (9) ◽  
pp. 1870021
Author(s):  
Zhenyu Wang ◽  
Xin Chen ◽  
Fei Shen ◽  
Xiaogang Hang ◽  
Chunming Niu
Keyword(s):  
Energy Density ◽  
High Energy ◽  
High Energy Density ◽  
Air Battery ◽  
Lithium Air Batteries

scholarly journals A General Self-Sacrifice Template Strategy to 3D Heteroatom-Doped Macroporous Carbon for High-Performance Potassium-Ion Hybrid Capacitors

2021 ◽  
Vol 13 (1) ◽  
Author(s):  
Junwei Li ◽  
Xiang Hu ◽  
Guobao Zhong ◽  
Yangjie Liu ◽  
Yaxin Ji ◽  
...  
Keyword(s):  
Energy Density ◽  
High Performance ◽  
Density Functional ◽  
High Energy ◽  
Potassium Ion ◽  
High Energy Density ◽  
Capacitance Performance ◽  
Hybrid Capacitors ◽  
Co Doped ◽  
Macroporous Carbon

AbstractPotassium-ion hybrid capacitors (PIHCs) tactfully combining capacitor-type cathode with battery-type anode have recently attracted increasing attentions due to their advantages of decent energy density, high power density, and low cost; the mismatches of capacity and kinetics between capacitor-type cathode and battery-type anode in PIHCs yet hinder their overall performance output. Herein, based on prediction of density functional theory calculations, we find Se/N co-doped porous carbon is a promising candidate for K+ storage and thus develop a simple and universal self-sacrifice template method to fabricate Se and N co-doped three-dimensional (3D) macroporous carbon (Se/N-3DMpC), which features favorable properties of connective hierarchical pores, expanded interlayer structure, and rich activity site for boosting pseudocapacitive activity and kinetics toward K+ storage anode and enhancing capacitance performance for the reversible anion adsorption/desorption cathode. As expected, the as-assembled PIHCs full cell with a working voltage as high as 4.0 V delivers a high energy density of 186 Wh kg−1 and a power output of 8100 W kg−1 as well as excellent long service life. The proof-of-concept PIHCs with excellent performance open a new avenue for the development and application of high-performance hybrid capacitors.

N, S Co-doped hierarchical porous carbon rods derived from protic salt: Facile synthesis for high energy density supercapacitors

2018 ◽  
Vol 274 ◽  
pp. 378-388 ◽  
Author(s):  
Ling Miao ◽  
Dazhang Zhu ◽  
Mingxian Liu ◽  
Hui Duan ◽  
Zhiwei Wang ◽  
...  
Keyword(s):  
Energy Density ◽  
Porous Carbon ◽  
High Energy ◽  
High Energy Density ◽  
Hierarchical Porous Carbon ◽  
Facile Synthesis ◽  
Hierarchical Porous ◽  
Carbon Rods ◽  
Co Doped
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