Assembling organic–inorganic building blocks for high-capacity electrode design

2021 ◽  
Author(s):  
Xiaolin Zhao ◽  
Zhongli Hu ◽  
Yining Li ◽  
Youwei Wang ◽  
Erhong Song ◽  
...  
Keyword(s):  
Metal Cation ◽  
Local Structure ◽  
Organic Anion ◽  
Specific Capacity ◽  
High Capacity ◽  
Building Blocks ◽  
Electrode Design ◽  
High Specific Capacity ◽  
Inorganic And Organic

The local structure composition of inorganic and organic building blocks could deliver a high specific capacity through cooperatively activating the redox of the metal cation and organic anion.

scholarly journals Wire-in-Wire TiO2/C Nanofibers Free-Standing Anodes for Li-Ion and K-Ion Batteries with Long Cycling Stability and High Capacity

2021 ◽  
Vol 13 (1) ◽  
Author(s):  
Die Su ◽  
Yi Pei ◽  
Li Liu ◽  
Zhixiao Liu ◽  
Junfang Liu ◽  
...  
Keyword(s):  
Critical Role ◽  
Electronic Conductivity ◽  
Specific Capacity ◽  
High Capacity ◽  
Cycling Stability ◽  
Free Standing ◽  
High Specific Capacity ◽  
Tetracarboxylic Dianhydride ◽  
Carbon Network

AbstractWearable and portable mobile phones play a critical role in the market, and one of the key technologies is the flexible electrode with high specific capacity and excellent mechanical flexibility. Herein, a wire-in-wire TiO2/C nanofibers (TiO2 ww/CN) film is synthesized via electrospinning with selenium as a structural inducer. The interconnected carbon network and unique wire-in-wire nanostructure cannot only improve electronic conductivity and induce effective charge transports, but also bring a superior mechanic flexibility. Ultimately, TiO2 ww/CN film shows outstanding electrochemical performance as free-standing electrodes in Li/K ion batteries. It shows a discharge capacity as high as 303 mAh g−1 at 5 A g−1 after 6000 cycles in Li half-cells, and the unique structure is well-reserved after long-term cycling. Moreover, even TiO2 has a large diffusion barrier of K+, TiO2 ww/CN film demonstrates excellent performance (259 mAh g−1 at 0.05 A g−1 after 1000 cycles) in K half-cells owing to extraordinary pseudocapacitive contribution. The Li/K full cells consisted of TiO2 ww/CN film anode and LiFePO4/Perylene-3,4,9,10-tetracarboxylic dianhydride cathode possess outstanding cycling stability and demonstrate practical application from lighting at least 19 LEDs. It is, therefore, expected that this material will find broad applications in portable and wearable Li/K-ion batteries.

An artificial sea urchin with hollow spines: improved mechanical and electrochemical stability in high-capacity Li–Ge batteries

Nanoscale ◽  
2020 ◽  
Vol 12 (10) ◽  
pp. 5812-5816 ◽  
Author(s):  
Jinyun Liu ◽  
Xirong Lin ◽  
Tianli Han ◽  
Qianqian Lu ◽  
Jiawei Long ◽  
...  
Keyword(s):  
Lithium Ion Batteries ◽  
Sea Urchin ◽  
Specific Capacity ◽  
High Capacity ◽  
Rate Capability ◽  
Lithium Ion ◽  
Electrochemical Stability ◽  
High Rate ◽  
High Rate Capability ◽  
High Specific Capacity

Metallic germanium (Ge) as the anode can deliver a high specific capacity and high rate capability in lithium ion batteries.

Penta-BCN monolayer with high specific capacity and mobility as a compelling anode material for rechargeable batteries

2021 ◽  
Author(s):  
Lei Chen ◽  
Yang MinRui ◽  
Kong Fan ◽  
Wenling Du ◽  
Jiyuan Guo ◽  
...  
Keyword(s):  
Anode Material ◽  
First Principles ◽  
Metal Ion ◽  
Electrode Materials ◽  
Specific Capacity ◽  
High Capacity ◽  
Rechargeable Batteries ◽  
First Principles Calculations ◽  
High Specific Capacity ◽  
Increasing Demand

With the increasing demand for sustainable and clean energies, seeking high-capacity density electrode materials applied in the rechargeable metal-ion batteries is urgent. In this work, using first-principles calculations, we evaluate...

A high-capacity iron silicide–air primary battery in an acidic saline electrolyte

2020 ◽  
Vol 44 (4) ◽  
pp. 1624-1631
Author(s):  
Junjie Wang ◽  
Lifeng Cui ◽  
Shasha Li ◽  
Tingting Pu ◽  
Xueyou Fang ◽  
...  
Keyword(s):  
Specific Capacity ◽  
Iron Silicide ◽  
High Capacity ◽  
High Specific Capacity ◽  
Primary Battery

An FeSi2–air primary battery in saline electrolyte was assembled, which shows a high specific capacity of 1.90 A h g−1.

scholarly journals High Capacity and Superior Rate Performances Coexisting in Carbon-Based Sodium-Ion Battery Anode

Research ◽  
2019 ◽  
Vol 2019 ◽  
pp. 1-9
Author(s):  
Yuqian Li ◽  
Liyuan Zhang ◽  
Xiuli Wang ◽  
Xinhui Xia ◽  
Dong Xie ◽  
...  
Keyword(s):  
Ion Channels ◽  
High Performance ◽  
Specific Capacity ◽  
High Capacity ◽  
Rate Capability ◽  
Sodium Ion ◽  
Transformation Rule ◽  
High Specific Capacity ◽  
Storage Behavior ◽  
Fast Ion

Amorphous carbon is considered as a prospective and serviceable anode for the storage of sodium. In this contribution, we illuminate the transformation rule of defect/void ratio and the restrictive relation between specific capacity and rate capability. Inspired by this mechanism, ratio of plateau/slope capacity is regulated via temperature-control pyrolysis. Moreover, pore-forming reaction is induced to create defects, open up the isolated voids, and build fast ion channels to further enhance the capacity and rate ability. Numerous fast ion channels, high ion-electron conductivity, and abundant defects lead the designed porous hard carbon/Co3O4 anode to realize a high specific capacity, prolonged circulation ability, and enhanced capacity at high rates. This research deepens the comprehension of sodium storage behavior and proposes a fabrication approach to achieve high performance carbonaceous anodes for sodium-ion batteries.

scholarly journals Facile Hydrothermal Synthesis and Supercapacitor Performance of Mesoporous Necklace-Type ZnCo2O4 Nanowires

Catalysts ◽  
2021 ◽  
Vol 11 (12) ◽  
pp. 1516
Author(s):  
John Anthuvan Rajesh ◽  
Kwang-Soon Ahn
Keyword(s):  
Surface Area ◽  
High Surface ◽  
Specific Capacity ◽  
High Surface Area ◽  
Negative Electrode ◽  
Building Blocks ◽  
High Specific Capacity ◽  
Supercapacitor Performance ◽  
Subsequent Calcination ◽  
Excellent Stability

In this work, mesoporous ZnCo2O4 electrode material with necklace-type nanowires was synthesized by a simple hydrothermal method using water/ethylene glycol mixed solvent and subsequent calcination treatment. The ZnCo2O4 nanowires were assembled by several tiny building blocks of nanoparticles which led to the growth of necklace-type nanowires. The as-synthesized ZnCo2O4 nanowires had porous structures with a high surface area of 25.33 m2 g−1 and with an average mesopore of 23.13 nm. Due to the higher surface area and mesopores, the as-prepared necklace-type ZnCo2O4 nanowires delivered a high specific capacity of 439.6 C g−1 (1099 F g−1) at a current density of 1 A g−1, decent rate performance (47.31% retention at 20 A g−1), and good cyclic stability (84.82 % capacity retention after 5000 cycles). Moreover, a hybrid supercapacitor was fabricated with ZnCo2O4 nanowires as a positive electrode and activated carbon (AC) as a negative electrode (ZnCo2O4 nanowires//AC), which delivered an energy density of 41.87 Wh kg−1 at a power density of 800 W kg−1. The high electrochemical performance and excellent stability of the necklace-type ZnCo2O4 nanowires relate to their unique architecture, high surface area, mesoporous nature, and the synergistic effect between Zn and Co metals.

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.

Zinc ion stabilized MnO2 nanospheres for high capacity and long lifespan aqueous zinc-ion batteries

2019 ◽  
Vol 7 (22) ◽  
pp. 13727-13735 ◽  
Author(s):  
Jinjin Wang ◽  
Jian-Gan Wang ◽  
Huanyan Liu ◽  
Chunguang Wei ◽  
Feiyu Kang
Keyword(s):  
Specific Capacity ◽  
High Capacity ◽  
Zinc Ion ◽  
Cycling Stability ◽  
High Specific Capacity ◽  
Stabilized Mno ◽  
Superior Cycling Stability

Zinc ion stabilized MnO2 nanospheres with a flower-like morphology and mesoporous texture are prepared, and they show high specific capacity and superior cycling stability for Zn-ion batteries.

scholarly journals New Fe2O3-Clay@C Nanocomposite Anodes for Li-Ion Batteries Obtained by Facile Hydrothermal Processes

Nanomaterials ◽  
2018 ◽  
Vol 8 (10) ◽  
pp. 808 ◽  
Author(s):  
Daniel Alonso-Domínguez ◽  
María Pico ◽  
Inmaculada Álvarez-Serrano ◽  
María López
Keyword(s):  
Iron Oxide ◽  
Electrochemical Performance ◽  
Low Cost ◽  
Specific Capacity ◽  
High Capacity ◽  
Particle Morphology ◽  
High Specific Capacity ◽  
Li Ion ◽  
Composition Structure ◽  
Structure And Microstructure

New iron-oxide-based anodes are prepared by an environmentally-friendly and low-cost route. The analysis of the composition, structure, and microstructure of the samples reveals the presence of a major hematite phase, which is accompanied by a certain concentration of an oxyhydroxide phase, which can act as a “lithium-reservoir”. By using sodium alginate as a binder, the synthesized anodes display superior electrochemical response, i.e., high specific capacity values and high stability, not only versus Li but also versus a high voltage cathode in a full cell. From these bare materials, clay-supported anodes are further obtained using sepiolite and bentonite natural silicates. The electrochemical performance of such composites is improved, especially for the sepiolite-containing one treated at 400 °C. The thermal treatment at this temperature provides the optimal conditions for a synergic nano-architecture to develop between the clay and the hematite nanoparticles. High capacity values of ~2500 mA h g−1 after 30 cycles at 1 A g−1 and retentions close to 92% are obtained. Moreover, after 450 cycles at 2 A g−1 current rate, this composite electrode displays values as high as ~700 mA h g−1. These results are interpreted taking into account the interactions between the iron oxide nanoparticles and the sepiolite surface through hydrogen bonds. The electrochemical performance is not only dependent on the oxidation state and particle morphology, but the composition is revealed as a key feature.

Fast charging with high capacity for aluminum rechargeable batteries using organic additive in an ionic liquid electrolyte

2020 ◽  
Vol 22 (47) ◽  
pp. 27525-27528
Author(s):  
Yeseul Park ◽  
Danbi Lee ◽  
Jongmin Kim ◽  
Gibaek Lee ◽  
Yongsug Tak
Keyword(s):  
Ionic Liquid ◽  
Specific Capacity ◽  
High Capacity ◽  
Liquid Electrolyte ◽  
Rechargeable Batteries ◽  
Organic Additive ◽  
High Current ◽  
High Specific Capacity ◽  
Ionic Liquid Electrolyte ◽  
Fast Charging

The electrolyte containing benzene additive in Al-ion battery exhibited the best electrochemical properties with a high specific capacity at an extremely high current rate.

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