scholarly journals Directly Electrospun Carbon Nanofibers Incorporated with Mn3O4 Nanoparticles as Bending-Resistant Cathode for Flexible Al-Air Batteries

Nanomaterials ◽  
2020 ◽  
Vol 10 (2) ◽  
pp. 216 ◽  
Author(s):  
Ying Yu ◽  
Yuxin Zuo ◽  
Ying Liu ◽  
Youjun Wu ◽  
Zhonghao Zhang ◽  
...  
Keyword(s):  
Carbon Nanofibers ◽  
Flexible Electronics ◽  
Mechanical Stability ◽  
Specific Capacity ◽  
Wearable Devices ◽  
Power Source ◽  
High Specific Capacity ◽  
Continuous Bending ◽  
Air Battery ◽  
Mn3o4 Nanoparticles

Al-air batteries are regarded as potential power source for flexible and wearable devices. However, the traditional cathodes of Al-air batteries are easy to be broken after continuous bending. This is why few Al-air batteries have been tested under the state of dynamic bending so far. Herein, carbon nanofibers incorporated with Mn3O4 catalyst have been prepared as bending-resistant cathodes through direct electrospinning. The cathode assembled in Al-air battery showed excellent electrochemical and mechanical stability. A high specific capacity of 1021 mAh/cm2 was achieved after bending 1000 times, which is 81.7% of that in platform state. This work will facilitate the progress of using Al-air battery in flexible electronics.

scholarly journals Bifunctional Oxygen Electrocatalyst of Mesoporous Ni/NiO Nanosheets for Flexible Rechargeable Zn–Air Batteries

2020 ◽  
Vol 12 (1) ◽  
Author(s):  
Peitao Liu ◽  
Jiaqi Ran ◽  
Baorui Xia ◽  
Shibo Xi ◽  
Daqiang Gao ◽  
...  
Keyword(s):  
Flexible Electronics ◽  
Oxygen Deficiency ◽  
Specific Capacity ◽  
Half Wave ◽  
Excellent Electrochemical Performance ◽  
Long Time ◽  
Air Battery ◽  
Nio Nanosheets ◽  
Kinetics Of ◽  
Enhanced Conductivity

AbstractOne approach to accelerate the stagnant kinetics of both the oxygen reduction and evolution reactions (ORR/OER) is to develop a rationally designed multiphase nanocomposite, where the functions arising from each of the constituent phases, their interfaces, and the overall structure are properly controlled. Herein, we successfully synthesized an oxygen electrocatalyst consisting of Ni nanoparticles purposely interpenetrated into mesoporous NiO nanosheets (porous Ni/NiO). Benefiting from the contributions of the Ni and NiO phases, the well-established pore channels for charge transport at the interface between the phases, and the enhanced conductivity due to oxygen-deficiency at the pore edges, the porous Ni/NiO nanosheets show a potential of 1.49 V (10 mA cm−2) for the OER and a half-wave potential of 0.76 V for the ORR, outperforming their noble metal counterparts. More significantly, a Zn–air battery employing the porous Ni/NiO nanosheets exhibits an initial charging–discharging voltage gap of 0.83 V (2 mA cm−2), specific capacity of 853 mAh g Zn −1 at 20 mA cm−2, and long-time cycling stability (120 h). In addition, the porous Ni/NiO-based solid-like Zn–air battery shows excellent electrochemical performance and flexibility, illustrating its great potential as a next-generation rechargeable power source for flexible electronics.

Experimental Performance Evaluation of a Rechargeable Lithium-Air Battery Operating at Room Temperature

2014 ◽  
Author(s):  
Susanta K. Das ◽  
Salma Rahman ◽  
Jianfang Chai ◽  
Matthew Quast ◽  
Steven E. Keinath ◽  
...  
Keyword(s):  
Performance Evaluation ◽  
Room Temperature ◽  
Specific Capacity ◽  
High Capacity ◽  
Mesopore Volume ◽  
Air Cathode ◽  
High Specific Capacity ◽  
Experimental Performance ◽  
Dry Air ◽  
Air Battery

The effects of electrolyte, catalyst, and the process of preparation of the air-cathode on the performance of Li-air batteries were investigated. An ether based electrolyte was the best choice for Ketjen Black carbon based air cathodes and delivered high specific capacity (1050 mAh/gC) under dry air with cobalt oxide as catalyst. The introduction of an ultrasonication step in the air-cathode fabrication process improved the air-cathode microstructure. BET analyses revealed that the cathode has a higher surface area and mesopore volume when ultrasonication was used compared to those for the cathode fabricated without the ultrasonication step. With the optimized electrolyte and air-cathode, a high capacity of 2620 mAh/gC was obtained for Li-air batteries tested in dry air with a 0.1 mA/cm2 current density.

Electrospun Li3V2(PO4)3 nanocubes/carbon nanofibers as free-standing cathodes for high-performance lithium-ion batteries

2019 ◽  
Vol 7 (24) ◽  
pp. 14681-14688 ◽  
Author(s):  
Yi Peng ◽  
Rou Tan ◽  
Jianmin Ma ◽  
Qiuhong Li ◽  
Taihong Wang ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Carbon Nanofibers ◽  
High Performance ◽  
Specific Capacity ◽  
Rate Capability ◽  
Lithium Ion ◽  
Cycling Performance ◽  
Free Standing ◽  
High Specific Capacity ◽  
Electrospinning Method

A novel free-standing architecture with Li3V2(PO4)3 nanocubes embedded in N-doped carbon nanofibers has been successfully prepared through a facile ionic liquid-assisted electrospinning method, which exhibits an outstanding electrochemical performance including high specific capacity, stable cycling performance and superior rate capability.

scholarly journals Electrospun Al2O3 Film as Inhibiting Corrosion Interlayer of Anode for Solid Aluminum–Air Batteries

Batteries ◽  
2020 ◽  
Vol 6 (1) ◽  
pp. 19 ◽  
Author(s):  
Yuxin Zuo ◽  
Ying Yu ◽  
Hao Liu ◽  
Zhiqing Gu ◽  
Qianqian Cao ◽  
...  
Keyword(s):  
Current Density ◽  
Specific Capacity ◽  
High Capacity ◽  
High Energy ◽  
Power Source ◽  
Discharge Voltage ◽  
High Energy Density ◽  
Al2o3 Film ◽  
Air Battery ◽  
Excellent Stability

Solid Al–air batteries are a promising power source for potable electronics due to their environmentally friendly qualities and high energy density. However, the solid Al–air battery suffers from anodic corrosion and it is difficult to achieve a higher specific capacity. Thus, this work aims at suppressing the corrosion of Al anode by adding an electrospun Al2O3 interlayer on to the surface of the anode. The Al2O3 interlayer effectively inhibits the self-corrosion of the Al anode. Further, the effects of the thickness of the Al2O3 film on corrosion behavior were investigated. The results showed that the Al–air battery with a 4 μm Al2O3 interlayer is more suitable for a low current density discharge, which could be applied for mini-watt devices. With a proper thickness of the Al2O3 interlayer, corrosion of the anode was considerably suppressed without sacrificing the discharge voltage at a low current density. The Al–air battery with a 4 μm Al2O3 interlayer provided a significantly high capacity (1255 mAh/g at 5 mA/cm2) and an excellent stability. This wo presents a promising approach for fabricating an inhibiting corrosion interlayer for solid Al–air battery designed for mini-watt devices.

Honeycomb-Like Carbon with Doping of Transition-Metal and Nitrogen for Highly Efficient Zinc-Air Battery and Zinc-Ion Battery

2021 ◽  
Author(s):  
Qian Huang ◽  
Shuxian Zhuang ◽  
Xin You ◽  
Jinpeng Zhang ◽  
Ao Xie ◽  
...  
Keyword(s):  
Energy Storage ◽  
Transition Metal ◽  
Low Cost ◽  
Specific Capacity ◽  
Zinc Ion ◽  
Environmental Friendliness ◽  
High Specific Capacity ◽  
Highly Efficient ◽  
Air Battery

The aqueous Zinc-base batteries such as the Zn-air battery and the Zn-ion battery, featured with low-cost, high safety, high specific capacity and environmental-friendliness, have attracted intensive attention for energy storage....

The Coralloid-carbon Material Based on Biomass as Promising Anode Material for Lithium and Sodium Storage

2021 ◽  
Author(s):  
Ziqiang Yu ◽  
Zhiqiang Zhao ◽  
Tingyue Peng
Keyword(s):  
Lithium Ion Battery ◽  
Anode Material ◽  
Carbon Material ◽  
Specific Capacity ◽  
Lithium Ion ◽  
High Specific Capacity ◽  
Further Development ◽  
Sodium Storage ◽  
Cycling Life

Lithium ion battery (LIB), advantageous in high specific capacity, long cycling life and eco-friendly, has been widely used in many fields. The dwindling reserves, however, limit the further development. Sharing...

scholarly journals Enhanced Reversible Zinc Ion Intercalation in Deficient Ammonium Vanadate for High-Performance Aqueous Zinc-Ion Battery

2021 ◽  
Vol 13 (1) ◽  
Author(s):  
Quan Zong ◽  
Wei Du ◽  
Chaofeng Liu ◽  
Hui Yang ◽  
Qilong Zhang ◽  
...  
Keyword(s):  
High Performance ◽  
Coulombic Efficiency ◽  
Specific Capacity ◽  
Interlayer Spacing ◽  
Zinc Ion ◽  
Carbon Cloth ◽  
High Specific Capacity ◽  
Irreversible Reaction ◽  
Ammonium Vanadate ◽  
Structure Degradation

AbstractAmmonium vanadate with bronze structure (NH4V4O10) is a promising cathode material for zinc-ion batteries due to its high specific capacity and low cost. However, the extraction of $${\text{NH}}_{{4}}^{ + }$$ NH 4 + at a high voltage during charge/discharge processes leads to irreversible reaction and structure degradation. In this work, partial $${\text{NH}}_{{4}}^{ + }$$ NH 4 + ions were pre-removed from NH4V4O10 through heat treatment; NH4V4O10 nanosheets were directly grown on carbon cloth through hydrothermal method. Deficient NH4V4O10 (denoted as NVO), with enlarged interlayer spacing, facilitated fast zinc ions transport and high storage capacity and ensured the highly reversible electrochemical reaction and the good stability of layered structure. The NVO nanosheets delivered a high specific capacity of 457 mAh g−1 at a current density of 100 mA g−1 and a capacity retention of 81% over 1000 cycles at 2 A g−1. The initial Coulombic efficiency of NVO could reach up to 97% compared to 85% of NH4V4O10 and maintain almost 100% during cycling, indicating the high reaction reversibility in NVO electrode.

scholarly journals High-Specific-Capacity and High-Performing Post-Lithium-Ion Battery Anode over 2D Black Arsenic Phosphorus

2021 ◽  
Author(s):  
Nabil Khossossi ◽  
Deobrat Singh ◽  
Amitava Banerjee ◽  
Wei Luo ◽  
Ismail Essaoudi ◽  
...  
Keyword(s):  
Lithium Ion Battery ◽  
Specific Capacity ◽  
Lithium Ion ◽  
High Specific Capacity ◽  
High Performing ◽  
Battery Anode
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