Progressive “Layer to Hybrid Spinel/Layer” Phase Evolution with Proton and Zn2+ Co-intercalation to Enable High Performance of MnO2-Based Aqueous Batteries

2021 ◽  
Author(s):  
Shouxiang Ding ◽  
Lele Liu ◽  
Runzhi Qin ◽  
Xin Chen ◽  
Aoye Song ◽  
...  
Keyword(s):  
High Performance ◽  
Phase Evolution ◽  
Spinel Layer ◽  
Aqueous Batteries

High rate and stable symmetric potassium ion batteries fabricated with flexible electrodes and solid-state electrolytes

Nanoscale ◽  
2018 ◽  
Vol 10 (44) ◽  
pp. 20754-20760 ◽  
Author(s):  
Ke Lu ◽  
Hong Zhang ◽  
Siyuan Gao ◽  
Yingwen Cheng ◽  
Houyi Ma
Keyword(s):  
Solid State ◽  
Prussian Blue ◽  
High Performance ◽  
Potassium Ion ◽  
High Rate ◽  
Flexible Electrodes ◽  
Bipolar Electrodes ◽  
Solid State Electrolytes ◽  
Aqueous Batteries

Prussian blue particles were deposited on polypyrrole coated wiper clothes and used as bipolar electrodes for fabrication of high performance flexible solid state K-ion aqueous batteries.

Reinforcing the surface conductivity and stability of primary particles for high-performance Li-rich layered Li1.18Mn0.52Co0.15Ni0.15O2via an integrated strategy

2020 ◽  
Vol 7 (17) ◽  
pp. 3154-3164
Author(s):  
Xianghuan Liu ◽  
Zhenyao Wang ◽  
Weidong Zhuang ◽  
Zhao Li ◽  
Wenjin Li ◽  
...  
Keyword(s):  
Structural Stability ◽  
High Performance ◽  
Rate Capability ◽  
Protective Layer ◽  
Surface Conductivity ◽  
Spinel Layer ◽  
Integrated Strategy ◽  
Primary Particles

A novel integrated Li3PO4 and spinel layer on primary particles surface was constructed by a facile synchronous route. It acts as a protective layer and a 3D Li+ diffusion network, leading to a superior structural stability and rate capability.

PHASE EVOLUTION AND MICROWAVE DIELECTRIC PROPERTIES OF (Li0.5Bi0.5)(W1-xMox)O4(0.0 ≤ x ≤ 1.0) CERAMICS WITH ULTRA-LOW SINTERING TEMPERATURES

2012 ◽  
Vol 05 (04) ◽  
pp. 1250042 ◽  
Author(s):  
DI ZHOU ◽  
JING GUO ◽  
XI YAO ◽  
LI-XIA PANG ◽  
ZE-MING QI ◽  
...  
Keyword(s):  
Dielectric Properties ◽  
High Performance ◽  
Microwave Dielectric Properties ◽  
Phase Evolution ◽  
Solid State Reaction Method ◽  
Ceramic Technology ◽  
Microwave Range ◽  
X Ray ◽  
Microwave Dielectric ◽  
C Complex

The ( Li 0.5 Bi 0.5)( W 1-x Mo x) O 4(0.0 ≤ x ≤ 1.0) ceramics were prepared via the solid state reaction method. The sintering temperature decreased almost linearly from 755°C for ( Li 0.5 Bi 0.5) WO 4 to 560°C for ( Li 0.5 Bi 0.5) MoO 4. When the x≤0.3, a wolframite solid solution can be formed. For x = 0.4 and x = 0.6 compositions, both the wolframite and scheelite phases can be formed from the X-ray diffraction analysis, while two different kinds of grains can be revealed from the scanning electron microscopy and energy-dispersive X-ray spectrometer results. High performance of microwave dielectric properties were obtained in the (Li0.5Bi0.5)(W0.6Mo0.4)O4 ceramic sintered at 620°C with a relative permittivity of 31.5, a Qf value of 8500 GHz (at 8.2 GHz), and a temperature coefficient value of +20 ppm/°C. Complex dielectric spectra of pure (Li0.5Bi0.5)WO4 ceramic gained from the infrared spectra were extrapolated down to microwave range, and they were in good agreement with the measured values. The ( Li0.5Bi0.5 )( W 1-x Mo x) O 4(0.0 ≤ x ≤ 1.0) ceramics might be promising for low temperature co-fired ceramic technology.

scholarly journals Mechanism of Li2S formation and dissolution in Lithium-Sulphur batteries

2021 ◽  
Author(s):  
Christian Prehal ◽  
Sara Drvarič Talian ◽  
Alen Vizintin ◽  
Heinz Amenitsch ◽  
Robert Dominko ◽  
...  
Keyword(s):  
High Performance ◽  
Surface Film ◽  
Rate Capability ◽  
Stochastic Modelling ◽  
Phase Evolution ◽  
Saxs Data ◽  
X Ray ◽  
X Ray Scattering ◽  
Chemical Phase

Abstract Insufficient understanding of the mechanism that reversibly converts sulphur into lithium sulphide (Li2S) via soluble polysulphides (PS) hampers the realization of high performance lithium-sulphur cells. Typically Li2S formation is explained by direct electroreduction of a PS to Li2S; however, this is not consistent with the size of the insulating Li2S deposits. Here, we use in situ small and wide angle X-ray scattering (SAXS/WAXS) to track the growth and dissolution of crystalline and amorphous deposits from atomic to sub-micron scales during charge and discharge. Stochastic modelling based on the SAXS data allows quantification of the chemical phase evolution during discharge and charge. We show that Li2S deposits predominantly via disproportionation of transient, solid Li2S2 to form primary Li2S crystallites and solid Li2S4 particles. We further demonstrate that this process happens in reverse during charge. These findings show that the discharge capacity and rate capability in Li-S battery cathodes are therefore limited by mass transport through the increasingly tortuous network of Li2S / Li2S4 / carbon pores rather than electron transport through a passivating surface film.

Tuning phase evolution of β-MnO2 during microwave hydrothermal synthesis for high-performance aqueous Zn ion battery

Nano Energy ◽  
2019 ◽  
Vol 64 ◽  
pp. 103942 ◽  
Author(s):  
Mingqiang Liu ◽  
Qinghe Zhao ◽  
Hao Liu ◽  
Jinglong Yang ◽  
Xin Chen ◽  
...  
Keyword(s):  
Hydrothermal Synthesis ◽  
High Performance ◽  
Phase Evolution ◽  
Microwave Hydrothermal

2D few-layer iron phosphosulfide: a self-buffer heterophase structure induced by irreversible breakage of P–S bonds for high-performance lithium/sodium storage

2019 ◽  
Vol 7 (4) ◽  
pp. 1529-1538 ◽  
Author(s):  
Chao-Ying Fan ◽  
Xiao-Hua Zhang ◽  
Yan-Hong Shi ◽  
Hai-Yang Xu ◽  
Jing-Ping Zhang ◽  
...  
Keyword(s):  
Low Temperature ◽  
High Performance ◽  
Phase Evolution ◽  
Heterophase Structure ◽  
Layer Iron ◽  
Sodium Storage

2D few-layer FePS3 is proposed for high-performance and low-temperature lithium/sodium storage through the synergism of oriented nanoengineering and intrinsic phase evolution.

High performance polyanthraquinone/Co–Ni(OH)2 aqueous batteries based on hydroxyl and potassium insertion/extraction reactions

2020 ◽  
Vol 4 (1) ◽  
pp. 132-137 ◽  
Author(s):  
Chang Liu ◽  
Ting Ma ◽  
Kexin Xia ◽  
Xuesen Hou ◽  
Qingshun Nian ◽  
...  
Keyword(s):  
Power Density ◽  
High Performance ◽  
Cycling Performance ◽  
High Energy ◽  
Aqueous Batteries

A high performance poly(1,4-anthraquinone)/Ni(OH)2 dual-ion battery is designed with high energy/power density and good cycling performance.

Phase Evolution and Sintering Characteristics of Mullite-Based Ceramics Prepared from Coal Fly Ash, Calcined Bauxite and Ball Clay

2009 ◽  
Vol 79-82 ◽  
pp. 2019-2022 ◽  
Author(s):  
Xue Ma ◽  
Xiao Yao ◽  
Su Dong Hua
Keyword(s):  
Fly Ash ◽  
Flexural Strength ◽  
High Performance ◽  
Low Cost ◽  
Coal Fly Ash ◽  
Transient Liquid Phase ◽  
Phase Evolution ◽  
Ball Clay ◽  
Sintering Characteristics ◽  
Increasing Temperature

The study provides a novel way for the utilization of coal fly ash, and enriches the sintering mechanism in preparation of low-cost, high performance mullite based ceramic. The phase evolution, microstructure, densification behavior and flexural strength as a function of the sintering temperatures, were investigated by XRD, SEM and evaluated by density, open porosity and shrinkage and three point bending method, respectively. Secondary mullite nucleates from the dissolution of alumina in transient liquid phase at 1300°C. Above 1400°C, mullite content increases and the densification is promoted with increasing temperature. Fast densification takes place and high flexural strength of 149MPa is achieved at 1600°C.

scholarly journals Prussian Blue Analogues in Aqueous Batteries and Desalination Batteries

2021 ◽  
Vol 13 (1) ◽  
Author(s):  
Chiwei Xu ◽  
Zhengwei Yang ◽  
Xikun Zhang ◽  
Maoting Xia ◽  
Huihui Yan ◽  
...  
Keyword(s):  
Prussian Blue ◽  
High Performance ◽  
Large Scale ◽  
Structural Characteristics ◽  
High Spin State ◽  
Aqueous System ◽  
Aqueous Systems ◽  
Prussian Blue Analogues ◽  
The Relationship ◽  
Aqueous Batteries

AbstractIn the applications of large-scale energy storage, aqueous batteries are considered as rivals for organic batteries due to their environmentally friendly and low-cost nature. However, carrier ions always exhibit huge hydrated radius in aqueous electrolyte, which brings difficulty to find suitable host materials that can achieve highly reversible insertion and extraction of cations. Owing to open three-dimensional rigid framework and facile synthesis, Prussian blue analogues (PBAs) receive the most extensive attention among various host candidates in aqueous system. Herein, a comprehensive review on recent progresses of PBAs in aqueous batteries is presented. Based on the application in different aqueous systems, the relationship between electrochemical behaviors (redox potential, capacity, cycling stability and rate performance) and structural characteristics (preparation method, structure type, particle size, morphology, crystallinity, defect, metal atom in high-spin state and chemical composition) is analyzed and summarized thoroughly. It can be concluded that the required type of PBAs is different for various carrier ions. In particular, the desalination batteries worked with the same mechanism as aqueous batteries are also discussed in detail to introduce the application of PBAs in aqueous systems comprehensively. This report can help the readers to understand the relationship between physical/chemical characteristics and electrochemical properties for PBAs and find a way to fabricate high-performance PBAs in aqueous batteries and desalination batteries.

Boosting the Zn-ion transfer kinetics to stabilize the Zn metal interface for high-performance rechargeable Zn-ion batteries

2021 ◽  
Author(s):  
Kai-Xue Wang ◽  
Lin Hong ◽  
Xiuming Wu ◽  
Chao Ma ◽  
Wei Huang ◽  
...  
Keyword(s):  
High Performance ◽  
Metallic Zinc ◽  
Ion Transfer ◽  
Next Generation ◽  
Metal Interface ◽  
Volumetric Capacity ◽  
Aqueous Batteries ◽  
Intrinsic Safety

Metallic zinc is widely considered as the most promising anode candidate for next-generation rechargeable aqueous batteries owing to its high volumetric capacity and intrinsic safety. However, the inferior reversibility caused...

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