Cu2Nb34O87 nanowires as a superior lithium storage host in advanced rechargeable batteries

2021 ◽  
Author(s):  
Xinhao Cai ◽  
Huihui Yan ◽  
Runtian Zheng ◽  
Haoxiang Yu ◽  
Zhengwei Yang ◽  
...  
Keyword(s):  
Coulombic Efficiency ◽  
Rechargeable Batteries ◽  
Lithium Storage ◽  
Charge Capacity ◽  
High Charge ◽  
Redox Couples

Cu2Nb34O78 nanowires present a high charge capacity of 279.8 mA h g−1 with a Coulombic efficiency of 89.6% based on Nb5+/Nb4+, Nb4+/Nb3+ and Cu2+/Cu+ redox couples.

Preparation and Performance of Si/Al/C Composites Anode Material Prepared by Glucose-Modified

2012 ◽  
Vol 164 ◽  
pp. 268-271
Author(s):  
Xu Ma ◽  
Ling Long Kong ◽  
Yu Ling Liu ◽  
Yan Hong Ding ◽  
Jie Zhao ◽  
...  
Keyword(s):  
Anode Material ◽  
Coulombic Efficiency ◽  
Test System ◽  
Cycling Stability ◽  
Charge Capacity ◽  
And Performance ◽  
Charge Discharge ◽  
Discharge Test

Si/Al/C composites were synthesized by the method of doping aluminum and glucose-modified. The samples were characterized by XRD, SEM, and the capacity and cycling stability of the composites were tested by electrochemical charge/discharge test system. After glucose was pyrolyzed, the first discharge and charge capacity of Si/Al/C composites were 1312 and 956.7mAh/g, and the first coulombic efficiency was 72.9%. After 50 cycles, the capacity of Si/Al/C composites was 440mAh /g and the coulombic efficiency remained over 98.1%

Lithium Storage Behaviors of PbNb2O6 in Rechargeable Batteries

2021 ◽  
Author(s):  
Haoxiang Yu ◽  
Yufei Liu ◽  
Chenchen Deng ◽  
Maoting Xia ◽  
Xikun Zhang ◽  
...  
Keyword(s):  
Rechargeable Batteries ◽  
Lithium Storage

PROPERTIES OF ALL-SOLID-STATE LITHIUM-ION RECHARGEABLE BATTERIES DEPOSITED BY RF MAGNETRON SPUTTERING

2013 ◽  
Vol 27 (22) ◽  
pp. 1350156 ◽  
Author(s):  
R. J. ZHU ◽  
Y. REN ◽  
L. Q. GENG ◽  
T. CHEN ◽  
L. X. LI ◽  
...  
Keyword(s):  
Thin Film ◽  
Thin Films ◽  
Solid State ◽  
Magnetron Sputtering ◽  
Coulombic Efficiency ◽  
Electronic Conductivity ◽  
Lithium Ion ◽  
Rf Magnetron Sputtering ◽  
Rechargeable Batteries ◽  
Voltage Range

Amorphous V 2 O 5, LiPON and Li 2 Mn 2 O 4 thin films were fabricated by RF magnetron sputtering methods and the morphology of thin films were characterized by scanning electron microscopy. Then with these three materials deposited as the anode, solid electrolyte, cathode, and vanadium as current collector, a rocking-chair type of all-solid-state thin-film-type Lithium-ion rechargeable battery was prepared by using the same sputtering parameters on stainless steel substrates. Electrochemical studies show that the thin film battery has a good charge–discharge characteristic in the voltage range of 0.3–3.5 V, and after 30 cycles the cell performance turned to become stabilized with the charge capacity of 9 μAh/cm2, and capacity loss of single-cycle of about 0.2%. At the same time, due to electronic conductivity of the electrolyte film, self-discharge may exist, resulting in approximately 96.6% Coulombic efficiency.

scholarly journals Two-Electron Reaction without Structural Phase Transition in Nanoporous Cathode Material

2012 ◽  
Vol 2012 ◽  
pp. 1-8 ◽  
Author(s):  
Tomoyuki Matsuda ◽  
Yutaka Moritomo
Keyword(s):  
Phase Transition ◽  
Cathode Material ◽  
Structural Phase Transition ◽  
Structural Phase ◽  
Discharge Process ◽  
Charge Capacity ◽  
High Charge ◽  
Valence States ◽  
X Ray Absorption ◽  
Charge Discharge

We investigated the charge/discharge properties, valence states, and structural properties of a nanoporous cathode materialLixMn[Fe(CN)6]0.83·3.5H2O. The film-type electrode ofLixMn[Fe(CN)6]0.83·3.5H2Oexhibited a high charge capacity(=128 mAh g-1)and a good cyclability (87% of the initial value after 100 cycles) and is one of the promising candidates for Li-ion battery cathode. X-ray absorption spectra near the Fe and Mn K-edges revealed that the charge/discharge process is a two-electron reaction; that is,MnII–NC–FeII,MnII–NC–FeIII, andMnIII–NC–FeIII. We further found that the crystal structure remains cubic throughout the charge/discharge process. The lattice constant slightly increased during the[FeII(CN)6]4-/[FeIII(CN)6]3-oxidization reaction while decreased during theMnII/MnIIIoxidization reaction. The two-electron reaction without structural phase transition is responsible for the high charge capacity and the good cyclability.

Chloride functionalized carbon nanotube sponge: High charge capacity and high magnetic saturation

Carbon ◽  
2020 ◽  
Vol 164 ◽  
pp. 324-336 ◽  
Author(s):  
Juan L. Fajardo-Díaz ◽  
Florentino López-Urías ◽  
Emilio Muñoz-Sandoval
Keyword(s):  
Carbon Nanotube ◽  
Magnetic Saturation ◽  
Charge Capacity ◽  
High Charge ◽  
Functionalized Carbon Nanotube

scholarly journals High‐charge‐capacity sputtered iridium oxide neural stimulation electrodes deposited using water vapor as a reactive plasma constituent

2019 ◽  
Vol 108 (3) ◽  
pp. 880-891 ◽  
Author(s):  
Jimin Maeng ◽  
Bitan Chakraborty ◽  
Negar Geramifard ◽  
Tong Kang ◽  
Rashed T. Rihani ◽  
...  
Keyword(s):  
Water Vapor ◽  
Iridium Oxide ◽  
Neural Stimulation ◽  
Charge Capacity ◽  
High Charge ◽  
Reactive Plasma

scholarly journals High-capacity rechargeable batteries based on deeply cyclable lithium metal anodes

2018 ◽  
Vol 115 (22) ◽  
pp. 5676-5680 ◽  
Author(s):  
Qiuwei Shi ◽  
Yiren Zhong ◽  
Min Wu ◽  
Hongzhi Wang ◽  
Hailiang Wang
Keyword(s):  
High Performance ◽  
Electrode Materials ◽  
Coulombic Efficiency ◽  
High Capacity ◽  
Protective Layer ◽  
Rechargeable Batteries ◽  
Metal Electrodes ◽  
Lithium Metal Anodes ◽  
Low Efficiency ◽  
Almost All

Discovering new chemistry and materials to enable rechargeable batteries with higher capacity and energy density is of paramount importance. While Li metal is the ultimate choice of a battery anode, its low efficiency is still yet to be overcome. Many strategies have been developed to improve the reversibility and cycle life of Li metal electrodes. However, almost all of the results are limited to shallow cycling conditions (e.g., 1 mAh cm−2) and thus inefficient utilization (<1%). Here we achieve Li metal electrodes that can be deeply cycled at high capacities of 10 and 20 mAh cm−2 with average Coulombic efficiency >98% in a commercial LiPF6/carbonate electrolyte. The high performance is enabled by slow release of LiNO3 into the electrolyte and its subsequent decomposition to form a Li3N and lithium oxynitrides (LiNxOy)-containing protective layer which renders reversible, dendrite-free, and highly dense Li metal deposition. Using the developed Li metal electrodes, we construct a Li-MoS3 full cell with the anode and cathode materials in a close-to-stoichiometric amount ratio. In terms of both capacity and energy, normalized to either the electrode area or the total mass of the electrode materials, our cell significantly outperforms other laboratory-scale battery cells as well as the state-of-the-art Li ion batteries on the market.

Storage of hydrogen and lithium in inorganic nanotubes and nanowires

2006 ◽  
Vol 21 (11) ◽  
pp. 2744-2757 ◽  
Author(s):  
Fangyi Cheng ◽  
Jun Chen
Keyword(s):  
Energy Storage ◽  
High Efficiency ◽  
Low Cost ◽  
High Surface ◽  
Rechargeable Batteries ◽  
Energy Storage And Conversion ◽  
Electrochemical Characteristics ◽  
Environmental Benefit ◽  
Lithium Storage ◽  
Inorganic Nanotubes

The search for cleaner and more efficient energy storage and conversion technologies has become an urgent task due to increasing environmental issues and limited energy resources. The aim of energy storage and conversion is to obtain energy with environmental benefit, high efficiency, and low cost (namely, maximum atomic and recycling economy). Progress has been made in the fields of hydrogen storage and rechargeable batteries. The emerging nanotechnology offers great opportunities to improve the performance of existing energy storage systems. Applying nanoscale materials to energy storage offers a higher capacity compared to the bulk counterparts due to the unique properties of nanomaterials such as high surface areas, large surface-to-volume atom ratio, and size-confinement effect. In particular, one- dimensional (1D) inorganic nanostructures like tubes and wires exhibit superior electrochemical characteristics because of the combined advantages of small size and 1D morphology. Hydrogen and lithium can be stored in different 1D nanostructures in various ways, including physical and/or chemical sorption, intercalation, and electrochemical reactions. This review highlights some of the latest progress with the studies of hydrogen and lithium storage in inorganic nanotubes and nanowires such as MoS2, WS2, TiS2, BN, TiO2, MnO2, V2O5, Fe2O3, Co3O4, NiO, and SnO2.

Calcium Cobalt Hexacyanoferrate Cathodes for Rechargeable Divalent Ion Batteries

2016 ◽  
Vol 19 (2) ◽  
pp. 057-064 ◽  
Author(s):  
Prasanna Padigi ◽  
Neal Kuperman ◽  
Joseph James Thiebes ◽  
Gary Goncher ◽  
David Evans ◽  
...  
Keyword(s):  
Cathode Material ◽  
Divalent Cations ◽  
Coulombic Efficiency ◽  
Empirical Relationship ◽  
Specific Capacity ◽  
Rate Capability ◽  
Capacity Utilization ◽  
Rechargeable Batteries ◽  
Host Lattice ◽  
Cobalt Hexacyanoferrate

Calcium cobalt hexacyanoferrate (CaCoHCF) was synthesized and tested as a cathode material for rechargeable batteries, using divalent cations (Mg2+, Ca2+, Ba2+). CaCoHCF demonstrated reversible specific capacity and coulombic efficiency (in parentheses) of 45.49 mAh/g (99.18%) for Mg2+, 55.04 mAh/g (99.2%) for Ca2+, and 44.09 mAh/g (99.42%) for Ba2+, at a current density of 25 mA/g. Of the three ions, Ca2+ resulted in the highest absolute specific capacity as well as high specific capacity utilization. The cathodes were also subjected to rate capability measurements using current densities of 50 mA/g (30 cycles) and 0.1 A/g (100 cycles). Upon addition of 2 mL water to the non-aqueous electrolyte, the fraction of theoretical specific capacity increased to 0.55 for Mg2+, 94.8% for Ca2+, and 95.53% forBa2+. This increase has been interpreted as the ability of the cathode material to intercalate and de-intercalate more ions due to the electrostatic shielding provided by water molecules between the host lattice and the guest cations. An empirical relationship between the cation size and specific capacity utilization is presented.Calcium cobalt hexacyanoferrate (CaCoHCF) was synthesized and tested as a cathode material for rechargeable batteries, using divalent cations (Mg2+, Ca2+, Ba2+). CaCoHCF demonstrated reversible specific capacity and coulombic efficiency (in parentheses) of 45.49 mAh/g (99.18%) for Mg2+, 55.04 mAh/g (99.2%) for Ca2+, and 44.09 mAh/g (99.42%) for Ba2+, at a current density of 25 mA/g. Of the three ions, Ca2+ resulted in highest absolute specific capacity as well as high specific capacity utilization. The cathodes were also subjected to rate capability measurements using current densities of 50 mA/g (30 cycles) and 0.1 A/g (100 cycles). Upon addition of 2 mL water to the non-aqueous electrolyte, the fraction of theoretical specific capacity increased to 0.55 for Mg2+, 94.8% for Ca2+, and 95.53% forBa2+. This increase has been interpreted as the ability of the cathode material to intercalate and de-intercalate more ions due to the electrostatic shielding provided by water molecules between the host lattice and the guest cations. An empirical relationship between the cation size and specific capacity utilization is presented.

Synthesis and investigation of layered GeS as a promising large capacity anode with low voltage and high efficiency in full-cell Li-ion batteries

2017 ◽  
Vol 1 (8) ◽  
pp. 1607-1614 ◽  
Author(s):  
Yaqing Wei ◽  
Jun He ◽  
Qing Zhang ◽  
Chang Liu ◽  
Ameng Wang ◽  
...  
Keyword(s):  
High Efficiency ◽  
Low Voltage ◽  
Coulombic Efficiency ◽  
Cell Voltage ◽  
Li Ion Batteries ◽  
High Cell ◽  
Lithium Storage ◽  
Large Capacity ◽  
Full Cell ◽  
Li Ion

Layered GeS shows a large capacity of 1768 mA h g−1 with a coulombic efficiency of 94% for lithium storage. With good stability and a low voltage in alloying region, the LiCoO2//GeS full cell exhibits both high cell voltage and large capacity.

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