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 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.

A large π-conjugated tetrakis (4-carboxyphenyl) porphyrin anode enables high specific capacity and superior cycling stability in lithium-ion batteries

2019 ◽  
Vol 55 (76) ◽  
pp. 11370-11373 ◽  
Author(s):  
Han Wu ◽  
Jianjun Zhang ◽  
Xiaofan Du ◽  
Min Zhang ◽  
Jinfeng Yang ◽  
...  
Keyword(s):  
Lithium Ion Batteries ◽  
Specific Capacity ◽  
Rate Capability ◽  
Lithium Ion ◽  
Cycling Stability ◽  
High Specific Capacity ◽  
Homo Lumo ◽  
Superior Cycling Stability ◽  
Uptake And Release

Small HOMO–LUMO gaps that enable the facile uptake and release of electrons, which can improve the rate capability.

High capacity and exceptional cycling stability of ternary metal sulfide nanorods as Li ion battery anodes

2015 ◽  
Vol 51 (69) ◽  
pp. 13350-13353 ◽  
Author(s):  
Dhrubajyoti Bhattacharjya ◽  
Apurba Sinhamahapatra ◽  
Jae-Jung Ko ◽  
Jong-Sung Yu
Keyword(s):  
Specific Capacity ◽  
High Capacity ◽  
Metal Sulfide ◽  
Cycling Stability ◽  
Passivation Layer ◽  
Li Ion Battery ◽  
Composite Binder ◽  
High Specific Capacity ◽  
Ternary Metal ◽  
Li Ion

Ternary spinel NiCo2S4 nanorods demonstrate high specific capacity and outstanding cycling stability as Li ion battery anodes due to restriction of a polymeric gel passivation layer by the CMC–PAA composite binder.

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.

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.

Sol–Gel Driving LiFe(MoO4)2 Microcrystals: High Capacity and Superior Cycling Stability for Anode Material in Lithium Ion Batteries

2019 ◽  
Vol 15 (2) ◽  
pp. 186-191 ◽  
Author(s):  
Li Wang ◽  
Yuanchuan He ◽  
Yanlin Mu ◽  
Bo Wu ◽  
Mengjiao Liu ◽  
...  
Keyword(s):  
Lithium Ion Batteries ◽  
Anode Material ◽  
Sol Gel ◽  
High Capacity ◽  
Lithium Ion ◽  
Cycling Stability ◽  
Superior Cycling Stability

scholarly journals Rechargeable Aqueous Zinc-Ion Batteries in MgSO4/ZnSO4 Hybrid Electrolytes

2020 ◽  
Vol 12 (1) ◽  
Author(s):  
Yingmeng Zhang ◽  
Henan Li ◽  
Shaozhuan Huang ◽  
Shuang Fan ◽  
Lingna Sun ◽  
...  
Keyword(s):  
Current Density ◽  
Specific Capacity ◽  
Cost Effective ◽  
Reversible Capacity ◽  
Zinc Ion ◽  
Rate Performance ◽  
Capacity Fading ◽  
Battery System ◽  
High Specific Capacity ◽  
A Current

AbstractMgSO4 is chosen as an additive to address the capacity fading issue in the rechargeable zinc-ion battery system of MgxV2O5·nH2O//ZnSO4//zinc. Electrolytes with different concentration ratios of ZnSO4 and MgSO4 are investigated. The batteries measured in the 1 M ZnSO4−1 M MgSO4 electrolyte outplay other competitors, which deliver a high specific capacity of 374 mAh g−1 at a current density of 100 mA g−1 and exhibit a competitive rate performance with the reversible capacity of 175 mAh g−1 at 5 A g−1. This study provides a promising route to improve the performance of vanadium-based cathodes for aqueous zinc-ion batteries with electrolyte optimization in cost-effective electrolytes.

Luminescence sensing and supercapacitor performances of a new (3,3)-connected Cd-MOF

CrystEngComm ◽  
2019 ◽  
Vol 21 (41) ◽  
pp. 6186-6195 ◽  
Author(s):  
Qian-Qian Liu ◽  
Ke-Fen Yue ◽  
Xian-Jun Weng ◽  
Yao-Yu Wang
Keyword(s):  
Specific Capacity ◽  
Cycling Stability ◽  
High Specific Capacity ◽  
Good Cycling Stability

The Cd-MOF shows high luminescence sensing for Cu2+ and nitrobenzene. The Cd-MOF electrode exhibits high specific capacity and good cycling stability.

Flower-like C@V2O5 microspheres as highly electrochemically active cathode in aqueous zinc-ion batteries

2020 ◽  
Vol 10 (10) ◽  
pp. 1697-1703
Author(s):  
Zebin Wu ◽  
Wei Zhou ◽  
Zhen Liu ◽  
Yijie Zhou ◽  
Guilin Zeng ◽  
...  
Keyword(s):  
Electrochemical Properties ◽  
Retention Rate ◽  
Specific Capacity ◽  
Cycling Performance ◽  
Zinc Ion ◽  
Rate Performance ◽  
Capacity Retention ◽  
Facile Hydrothermal Method ◽  
High Specific Capacity ◽  
Electrochemically Active

Flower-like C@V2O5 microspheres with high specific capacity were synthesized by a facile hydrothermal method. The microstructure, specific capacity and electrochemical properties of C@V2O5 microspheres were studied. Results showed that the C@V2O5 microspheres with a diameter of ∼3 m are covered over by V2O5 nanosheets, and therefore have a large surface area which is almost 5 times higher than that of pure V2O5 powders. Moreover, the initial specific capacity of C@V2O5 microsphere is as high as 247.42 mAh · g–1, and after 100 cycles, the capacity retention rate is still 99.4%. Compared with pure V2O5, flower-like C@V2O5 microspheres show higher discharge specific capacity, better rate performance and more stable cycling performance.

scholarly journals Urchin-like NiCoP coated with a carbon layer as a high-performance electrode for all-solid-state asymmetric supercapacitors

2020 ◽  
Vol 1 (3) ◽  
pp. 481-494 ◽  
Author(s):  
Jingzhou Ling ◽  
Hanbo Zou ◽  
Wei Yang ◽  
Shengzhou Chen
Keyword(s):  
Solid State ◽  
High Performance ◽  
Specific Capacity ◽  
Physical Structure ◽  
Carbon Layer ◽  
Cycling Stability ◽  
High Conductivity ◽  
Asymmetric Supercapacitors ◽  
High Specific Capacity ◽  
Excellent Cycling Stability

The NiCoP@C-ULAs composite with high conductivity, abundant pores and good physical structure shows high specific capacity and excellent cycling stability.

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