scholarly journals Achieving stable Na metal cycling via polydopamine/multilayer graphene coating of a polypropylene separator

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Jieqiong Qin ◽  
Haodong Shi ◽  
Kai Huang ◽  
Pengfei Lu ◽  
Pengchao Wen ◽  
...  
Keyword(s):  
Large Scale ◽  
Low Cost ◽  
Rate Capability ◽  
High Energy ◽  
High Energy Density ◽  
Multilayer Graphene ◽  
Porous Network ◽  
Battery System ◽  
Polypropylene Separator ◽  
Coated Separator

AbstractSodium metal batteries are considered one of the most promising low-cost high-energy-density electrochemical energy storage systems. However, the growth of unfavourable Na metal deposition and the limited cell cycle life hamper the application of this battery system at a large scale. Here, we propose the use of polypropylene separator coated with a composite material comprising polydopamine and multilayer graphene to tackle these issues. The oxygen- and nitrogen- containing moieties as well as the nano- and meso- porous network of the coating allow cycling of Na metal electrodes in symmetric cell configuration for over 2000 h with a stable 4 mV overpotential at 1 mA cm−2. When tested in full Na || Na3V2(PO4)3 coin cell, the coated separator enables the delivery of a stable capacity of about 100 mAh g−1 for 500 cycles (90% capacity retention) at a specific current of 235 mA g−1 and satisfactory rate capability performances (i.e., 75 mAh g−1 at 3.5 A g−1).

Manganese phosphoxide/Ni5P4 hybrids as an anode material for high energy density and rate potassium-ion storage

2021 ◽  
Author(s):  
Sen Yang ◽  
Ting Li ◽  
Yiwei Tan
Keyword(s):  
Energy Density ◽  
Lithium Ion Batteries ◽  
Large Scale ◽  
Low Cost ◽  
Lithium Ion ◽  
High Energy ◽  
Potassium Ion ◽  
High Energy Density ◽  
Active Materials ◽  
Ion Storage

Potassium-ion batteries (PIBs) that serve as low-cost and large-scale secondary batteries are regarded as promising alternatives and supplement to lithium-ion batteries. Hybrid active materials can be featured with the synergistic...

Alaska’s Renewables-Source Fuel Energy Storage Pilot Plant: Toward Community Energy Independence via Solid State Ammonia Synthesis (SSAS)

2013 ◽  
Author(s):  
William C. Leighty
Keyword(s):  
Energy Storage ◽  
Solid State ◽  
Large Scale ◽  
Ammonia Synthesis ◽  
Low Cost ◽  
High Energy ◽  
High Energy Density ◽  
Energy Needs ◽  
Steel Tanks ◽  
Energy Independence

Alaska village survival is threatened by the high cost of imported fuels for heating, electricity generation, and vehicles. During Winter 2007–8, the price per gallon of heating oil and diesel generation fuel exceeded $8 in many villages. Many villagers were forced to move to Anchorage or Fairbanks. Although indigenous renewable energy (RE) resources may be adequate to supply a community’s total annual energy needs, the innate intermittent and seasonal output of the renewables — except geothermal, where available, which may be considered “baseload” — requires large-scale, low-cost energy storage to provide an annually-firm energy supply. Anhydrous ammonia, NH3, is the most attractive, carbon-free fuel for this purpose at Alaska village scale, because of its 17.8% mass hydrogen content and its high energy density as a low-pressure liquid, suitable for storage in inexpensive mild steel tanks. NH3 may be synthesized directly from renewable-source electricity, water, and atmospheric nitrogen (N2) via solid state ammonia synthesis (SSAS), a new process to be pioneered in Alaska.

Defective MnO2 nanosheets based free-standing and high mass loading electrodes for high energy density aqueous zinc ion batteries

2021 ◽  
Author(s):  
Ping Shang ◽  
Yuanhao Liu ◽  
Yingying Mei ◽  
Lisha Wu ◽  
Yanfeng Dong
Keyword(s):  
Large Scale ◽  
Low Cost ◽  
High Energy ◽  
Zinc Ion ◽  
Wearable Devices ◽  
High Energy Density ◽  
High Mass ◽  
Mass Loading ◽  
Free Standing ◽  
Mno2 Nanosheets

Aqueous zinc ion batteries (ZIBs) hold great promises for large-scale energy storage and wearable devices due to their low cost and high safety, but suffer from low capacity and energy...

scholarly journals Stable aqueous aluminum-manganese photoelectrochemical cells with high-rate and high-efficiency abilities

2021 ◽  
Author(s):  
Shuqiang Jiao ◽  
Xuefeng Zhang ◽  
Wei-li Song ◽  
Mingyong Wang ◽  
Jiguo Tu ◽  
...  
Keyword(s):  
Energy Density ◽  
Large Scale ◽  
High Efficiency ◽  
Rate Capability ◽  
High Energy ◽  
High Rate ◽  
High Energy Density ◽  
Energy Storage Devices ◽  
Slow Kinetics ◽  
Aqueous Aluminum

Abstract Aqueous aluminum-ion batteries (AAIBs) are potential candidates for large-scale energy storage devices for their advantages of high energy density, resource abundance, low cost, safety, and environmental friendliness. Due to various redox procedures, good reversibility, and high discharge potential, the aqueous aluminum-manganese oxide battery has drawn wide attention, while the critical issues induced from slow kinetics and undesired soluble Mn2+ lead to slow charging, poor rate capability, and low energy density. However, there is very limited progress for performance improvement via conventional chemical or physical modification approaches. To overcome these challenges, an efficient photo-regulation strategy has been proposed in terms of direct radiating visible light on the cell during the galvanostatic charging and discharging. The efficient separation and transmission of photoelectrons in the photo positive electrode dramatically improves the dynamics, and fast charging and enhanced rate performance could be achieved. Photo-oxidation behavior can effectively promote the conversion of soluble Mn2+, thus further enhancing the energy density of the as-assembled aluminum-manganese battery. Furthermore, a photo-conversion efficiency of up to 1.2% has been acquired. Based on the photo-regulation strategy, the mechanism of the photoelectrochemical coupling system has been understood, which opens a promising route for achieving photoelectrochemical batteries with high energy density and fast charge.

Large-Scale and Low-Cost Motivation of Nitrogen-Doped Commercial Activated Carbon for High-Energy-Density Supercapacitor

2019 ◽  
Vol 2 (6) ◽  
pp. 4234-4243 ◽  
Author(s):  
Shuai Zhang ◽  
Xiaoze Shi ◽  
Xuecheng Chen ◽  
Dengsong Zhang ◽  
Xianjie Liu ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Energy Density ◽  
Large Scale ◽  
Low Cost ◽  
High Energy ◽  
High Energy Density ◽  
Nitrogen Doped

scholarly journals TiO2/GO-coated functional separator to suppress polysulfide migration in lithium–sulfur batteries

2019 ◽  
Vol 10 ◽  
pp. 1726-1736 ◽  
Author(s):  
Ning Liu ◽  
Lu Wang ◽  
Taizhe Tan ◽  
Yan Zhao ◽  
Yongguang Zhang
Keyword(s):  
Rate Capability ◽  
High Energy ◽  
High Energy Density ◽  
Cyclic Performance ◽  
Chemical Absorption ◽  
Lithium Sulfur Batteries ◽  
Excellent Adhesion ◽  
Coated Separator ◽  
Enhanced Conductivity ◽  
Lithium Sulfur

Lithium–sulfur batteries render a high energy density but suffer from poor cyclic performance due to the dissolution of intermediate polysulfides. Herein, a lightweight nanoporous TiO2 and graphene oxide (GO) composite is prepared and utilized as an interlayer between a Li anode and a sulfur cathode to suppress the polysulfide migration and improve the electrochemical performance of Li/S batteries. The interlayer can capture the polysulfides due to the presence of oxygen functional groups and formation of chemical bonds. The hierarchically porous TiO2 nanoparticles are tightly wrapped in GO sheets and facilitate the polysulfide storage and chemical absorption. The excellent adhesion between TiO2 nanoparticles and GO sheets resulted in enhanced conductivity, which is highly desirable for an efficient electron transfer process. The Li/S battery with a TiO2/GO-coated separator exhibited a high initial discharge capacity of 1102.8 mAh g−1 and a 100th cycle capacity of 843.4 mAh g−1, which corresponds to a capacity retention of 76.48% at a current rate of 0.2 C. Moreover, the Li/S battery with the TiO2/GO-coated separator showed superior cyclic performance and excellent rate capability, which shows the promise of the TiO2/GO composite in next-generation Li/S batteries.

scholarly journals Progress in Preparation and Modification of LiNi0.6Mn0.2Co0.2O2 Cathode Material for High Energy Density Li-Ion Batteries

2018 ◽  
Vol 2018 ◽  
pp. 1-12 ◽  
Author(s):  
Lipeng Xu ◽  
Fei Zhou ◽  
Bing Liu ◽  
Haobing Zhou ◽  
Qichang Zhang ◽  
...  
Keyword(s):  
Cathode Materials ◽  
Low Cost ◽  
Specific Capacity ◽  
Rate Capability ◽  
Lithium Ion ◽  
High Energy ◽  
High Energy Density ◽  
Synthesis Methods ◽  
High Specific Capacity ◽  
Li Ion

Due to the advantages of high specific capacity, various temperatures, and low cost, layered LiNi0.6Co0.2Mn0.2O2 has become one of the potential cathode materials for lithium-ion battery. However, its application was limited by the high cation mixing degree and poor electric conductivity. In this paper, the influences of synthesis methods and modification such surface coating and doping materials on the electrochemical properties such as capacity, cycle stability, rate capability, and impedance of LiNi0.6Co0.2Mn0.2O2 cathode materials are reviewed and discussed. The confronting issues of LiNi0.6Co0.2Mn0.2O2 cathode materials have been pointed out, and the future development of its application is also prospected.

scholarly journals Universal strategy towards high–energy aqueous multivalent ion batteries

2021 ◽  
Author(s):  
Xiao Tang ◽  
Dong Zhou ◽  
Bao Zhang ◽  
Shijian Wang ◽  
Peng Li ◽  
...  
Keyword(s):  
Energy Storage ◽  
Energy Density ◽  
Metal Oxide ◽  
Large Scale ◽  
Low Cost ◽  
High Energy ◽  
High Energy Density ◽  
Aqueous Battery ◽  
Oxide Cathodes ◽  
Multivalent Metal

Abstract Non–aqueous rechargeable multivalent metal (Ca, Mg, Al, etc.) batteries are promising for large–scale energy storage due to their low cost. However, their practical applications face formidable challenges owing to low electrochemical reversibility and dendrite growth of multivalent metal anodes, sluggish kinetics of multivalent ion in metal oxide cathodes, and poor electrode compatibility of flammable organic electrolytes. To overcome these intrinsic hurdles, we develop aqueous multivalent ion batteries to replace the prevailing non–aqueous multivalent metal batteries by using wide–window super–concentrated aqueous gel electrolytes, the versatile high–capacity sulfur anodes, and high–voltage metal oxide cathodes. This rationally designed aqueous battery chemistry enables the long–lasting multivalent ion batteries featured with increased high energy density, reversibility and safety. As a demonstration model, a calcium ion−sulfur||metal oxide full cell exhibited a high energy density of 110 Wh kg–1 with outstanding cycling stability. Molecular dynamics modelling and experimental investigations revealed that the side reactions could be significantly restrained through the suppressed water activity and formation of protective inorganic solid electrolyte interphase in the aqueous gel electrolyte. The unique redox chemistry has also been successfully extended to aqueous magnesium ion and aluminum ion−sulfur||metal oxide batteries. This work will boost aqueous multivalent ion batteries for low−cost large–scale energy storage.

Influence of Calcination Temperature on Structure and Electrochemical Behavior of LiNi0.83 Co0.11Mn0.06O2 Cathodes for Lithium-Ion Batteries

2019 ◽  
Vol 944 ◽  
pp. 714-720
Author(s):  
Jing Wang ◽  
Dan Hua Li ◽  
Ran Wang ◽  
Shi Chen ◽  
Yue Feng Su ◽  
...  
Keyword(s):  
Lithium Ion Batteries ◽  
Sintering Temperature ◽  
Low Cost ◽  
Rate Capability ◽  
Lithium Ion ◽  
Cycling Performance ◽  
High Energy ◽  
High Energy Density ◽  
Layered Oxides ◽  
Temperature Time

Nickel-rich layered oxides (Ni ≥60%) are considered as the most promising cathode materials for lithium-ion batteries due to its high energy density and low cost. However, its cycling performance is seriously influenced by the synthesis condition, like the sintering temperature, time and atmosphere. Herein, we investigate different properties of LiNi0.83Co0.11Mn0.06O2 (LNCMO) sintered from 720 to780 °C, and the cathode calcined at 760 °C display the most perfect layered structure and the uniform distribution of primary particles size. Therefore, the LNCMO sintered at 760 °C exhibited the best rate capability of 118 mAh·g-1 at 10 C and the highest capacity retention of 95.44 % after 100 cycles at 1 C. Our results indicate that the cycling performance and rate capability of LNCMO are heavily depended on the sintering temperature.

scholarly journals Enhanced Potassium-Ion Storage of the 3D Carbon Superstructure by Manipulating the Nitrogen-Doped Species and Morphology

2020 ◽  
Vol 13 (1) ◽  
Author(s):  
Yanhua Li ◽  
Kui Xiao ◽  
Cong Huang ◽  
Jin Wang ◽  
Ming Gao ◽  
...  
Keyword(s):  
Energy Storage ◽  
High Performance ◽  
Density Functional ◽  
Large Scale ◽  
Specific Capacity ◽  
Rate Capability ◽  
High Energy ◽  
Potassium Ion ◽  
High Energy Density ◽  
Superior Performance

Abstract Potassium-ion batteries (PIBs) are attractive for grid-scale energy storage due to the abundant potassium resource and high energy density. The key to achieving high-performance and large-scale energy storage technology lies in seeking eco-efficient synthetic processes to the design of suitable anode materials. Herein, a spherical sponge-like carbon superstructure (NCS) assembled by 2D nanosheets is rationally and efficiently designed for K+ storage. The optimized NCS electrode exhibits an outstanding rate capability, high reversible specific capacity (250 mAh g−1 at 200 mA g−1 after 300 cycles), and promising cycling performance (205 mAh g−1 at 1000 mA g−1 after 2000 cycles). The superior performance can be attributed to the unique robust spherical structure and 3D electrical transfer network together with nitrogen-rich nanosheets. Moreover, the regulation of the nitrogen doping types and morphology of NCS-5 is also discussed in detail based on the experiments results and density functional theory calculations. This strategy for manipulating the structure and properties of 3D materials is expected to meet the grand challenges for advanced carbon materials as high-performance PIB anodes in practical applications.

Sign in / Sign up

Export Citation Format

Share Document