scholarly journals Lithium Ion Battery Materials as Tunable, Redox Non-Innocent Catalyst Supports

2022 ◽  
Author(s):  
Alon Chapovetsky ◽  
Ryan J. Witzke ◽  
Robert Kennedy ◽  
Evan Wegener ◽  
Fulya Dogan ◽  
...  
Keyword(s):  
Anode Materials ◽  
Lithium Ion ◽  
Catalyst Supports ◽  
Li Ion Battery ◽  
Diffusion Channel ◽  
Battery Materials ◽  
Redox States ◽  
Electronic Tuning ◽  
Li Ion ◽  
Surface Redox

The development of general strategies for the electronic tuning of a catalyst’s active site is an ongoing challenge in heterogeneous catalysis. To this end, herein we describe the application of Li-ion battery cathode and anode materials as redox non-innocent catalyst supports that can be continuously modulated as a function of lithium intercalation. A zero-valent nickel complex was oxidatively grafted onto the surface of lithium manganese oxide (LixMn2O4) to yield isolated Ni(II) occupying the vacant interstitial octahedral site in the Li diffusion channel on the surface and subsurface of the spinel structure (Ni/LixMn2O4). The activity of Ni/LixMn2O4 for olefin hydrogenation, as a representative probe reaction, was found to increase monotonically as a function of support reductive lithiation. Simulation of Ni/LixMn2O4 reveals the dramatic impact of surface redox states on the viability of the homolytic oxidative addition mechanism for H2 activation. Catalyst control through support lithiation was extended to an organotantalum complex on LixTiO2, demonstrating the generality of this phenomenon.

Synthesis of carbon xerogel nanoparticles by inverse emulsion polymerization of resorcinol–formaldehyde and their use as anode materials for lithium-ion battery

RSC Advances ◽  
2015 ◽  
Vol 5 (7) ◽  
pp. 4747-4753 ◽  
Author(s):  
Manohar Kakunuri ◽  
Sheetal Vennamalla ◽  
Chandra S. Sharma
Keyword(s):  
Lithium Ion Battery ◽  
Anode Materials ◽  
High Capacity ◽  
Lithium Ion ◽  
Electrochemical Characteristics ◽  
Li Ion Battery ◽  
Carbon Xerogel ◽  
Resorcinol Formaldehyde ◽  
Li Ion ◽  
Potential Use

Resorcinol–formaldehyde (RF) derived carbon xerogel nanoparticles synthesized by inverse emulsification followed by drying and pyrolysis exhibited excellent electrochemical characteristics and thus find potential use as high capacity anode materials for Li ion battery.

MOF-derived Co3O4 microspheres with pagoda cauliflower shape as anode materials for stable life Li-ion battery

2020 ◽  
Vol 13 (06) ◽  
pp. 2050029
Author(s):  
Chi Zhang ◽  
Haiyan Wang ◽  
Yanmei Nie ◽  
Weidong Yu ◽  
Jun Yan
Keyword(s):  
Anode Materials ◽  
Metal Organic Frameworks ◽  
Lithium Ion ◽  
Inorganic Compound ◽  
Li Ion Battery ◽  
Pyrolysis Process ◽  
Excellent Electrochemical Performance ◽  
Metal Organic ◽  
Li Ion ◽  
Co3o4 Microspheres

Metal organic frameworks (MOFs) are widely used in the synthesis of metal oxides as important organic–inorganic compound precursors. A perovskite ABO3-type Co-based MOF [NH4][Co(HCOO)3] was synthesized from a simple mixture without any adjuvant. Porous Co3O4 microspheres are used as anode materials for lithium-ion batteries (LIBs), which are obtained from [NH4][Co(HCOO)3] as a precursor through a pyrolysis process in air. The obtained pagoda cauliflower-shaped Co3O4 microspheres exhibit an excellent electrochemical performance.

Three-dimensionally ordered mesoporous carbons activated by hot ammonia treatment as high-performance anode materials in lithium-ion batteries

2015 ◽  
Vol 39 (8) ◽  
pp. 6178-6185 ◽  
Author(s):  
Bin Han ◽  
Eun Joo Lee ◽  
Won Ho Choi ◽  
Won Cheol Yoo ◽  
Jin Ho Bang
Keyword(s):  
Anode Materials ◽  
High Performance ◽  
Lithium Ion ◽  
Mesoporous Carbons ◽  
Li Ion Battery ◽  
Ammonia Treatment ◽  
Ordered Mesoporous Carbons ◽  
Ordered Mesoporous ◽  
Li Ion ◽  
Battery Application

A simple NH3 heat-treatment is a facile and effective way to boost the performance of three-dimensionally ordered mesoporous carbons in Li-ion battery application.

scholarly journals Lithium Ion Battery Materials as Tunable, Redox Non-Innocent Catalyst Supports

2021 ◽  
Author(s):  
Alon Chapovetsky ◽  
Ryan J. Witzke ◽  
Robert Kennedy ◽  
Evan Wegener ◽  
Fulya Dogan ◽  
...  
Keyword(s):  
Lithium Ion ◽  
Catalyst Supports ◽  
Paramagnetic Resonance ◽  
Battery Materials ◽  
X Ray ◽  
Electronic Tuning ◽  
Microscopy Techniques ◽  
Nickel Species ◽  
X Ray Absorption ◽  
Electron Paramagnetic

The development of general strategies for the electronic tuning of a catalyst’s active site is an ongoing challenge in heterogeneous catalysis. To this end we report the application of cathode and anode materials as redox non-innocent catalyst supports that can be continuously modulated as a function of lithium intercalation. A zero valent nickel complex was oxidatively grafted onto the surface of lithium manganese oxide (Li<sub>x</sub>Mn<sub>2</sub>O<sub>4</sub>) to yield single-sites of Ni<sup>2</sup><sub>­</sub><sup>+</sup> (Ni/Li<sub>x</sub>Mn<sub>2</sub>O<sub>4</sub>). Its activity for olefin hydrogenation was found to be a function of the redox state of the support material, with the most lithiated variant showing the most activity. X-ray absorption, X-ray photoelectron, solid-state nuclear magnetic resonance and electron paramagnetic resonance spectroscopies, and electron microscopy techniques established the nature of the nickel species on Li<sub>x</sub>Mn<sub>2</sub>O<sub>4</sub>. Catalyst control through support redox non-innocence was extended to an organotantalum complex on lithium titanium oxide (Li<sub>x</sub>TiO<sub>2</sub>), demonstrating the generality of this phenomenon.

scholarly journals Lithium Ion Battery Materials as Tunable, Redox Non-Innocent Catalyst Supports

2021 ◽  
Author(s):  
Alon Chapovetsky ◽  
Ryan J. Witzke ◽  
Robert Kennedy ◽  
Evan Wegener ◽  
Fulya Dogan ◽  
...  
Keyword(s):  
Lithium Ion ◽  
Catalyst Supports ◽  
Paramagnetic Resonance ◽  
Battery Materials ◽  
X Ray ◽  
Electronic Tuning ◽  
Microscopy Techniques ◽  
Nickel Species ◽  
X Ray Absorption ◽  
Electron Paramagnetic

The development of general strategies for the electronic tuning of a catalyst’s active site is an ongoing challenge in heterogeneous catalysis. To this end we report the application of cathode and anode materials as redox non-innocent catalyst supports that can be continuously modulated as a function of lithium intercalation. A zero valent nickel complex was oxidatively grafted onto the surface of lithium manganese oxide (Li<sub>x</sub>Mn<sub>2</sub>O<sub>4</sub>) to yield single-sites of Ni<sup>2</sup><sub>­</sub><sup>+</sup> (Ni/Li<sub>x</sub>Mn<sub>2</sub>O<sub>4</sub>). Its activity for olefin hydrogenation was found to be a function of the redox state of the support material, with the most lithiated variant showing the most activity. X-ray absorption, X-ray photoelectron, solid-state nuclear magnetic resonance and electron paramagnetic resonance spectroscopies, and electron microscopy techniques established the nature of the nickel species on Li<sub>x</sub>Mn<sub>2</sub>O<sub>4</sub>. Catalyst control through support redox non-innocence was extended to an organotantalum complex on lithium titanium oxide (Li<sub>x</sub>TiO<sub>2</sub>), demonstrating the generality of this phenomenon.

scholarly journals Li-ion Battery Research in Hierarchical Green-Energy Materials Research Center

2020 ◽  
Vol 2 (2) ◽  
pp. 4-5
Keyword(s):  
Anode Materials ◽  
Gel Polymer Electrolyte ◽  
Synergetic Effect ◽  
Lithium Ion ◽  
Oxidation Potential ◽  
Green Energy ◽  
Research Center ◽  
Scale Production ◽  
Li Ion Battery ◽  
Li Ion

Hierarchical Green-Energy Research Center aims to promote materials innovation of Li-ion battery (LIB) for electric scooter and MWh class energy storage. Our team has mainly developed strategies for material optimization and research methodology for the improvement of electric power and cyclic stability of LIB. Metal oxides are abundant in defect structures that determine electric conductance and electrochemical activity. The first principle calculation of lithium titanate (LTO) was applied to access the electronic structure of pristine LTO and aliovalent ion-doping LTO. The other oxides were chosen as nanostructured anode materials anchored on reduced graphene oxide. We found that their cyclic ability is significantly improved due to the structurally synergetic effect between oxide nanocrystallite and substrate; Si is regarded as one of the most popular anode materials for 3rd generation LIB, but its cycle life is still limited by an overgrowth of secondary electrolyte interface (SEI). Glucose-derived Si-O-C ligand in modified SEI possessed a high affinity to Li-chelation, thus alleviating volume expansion and structural instability. Electrolyte design is considered the current technical bottleneck for the implementation of high voltage LIB. An ionic liquid hybrid electrolyte has been demonstrated excellent oxidation potential of the carbonate solvent, resistance to Al corrosion, and potential of ~5.0 V (vs. Li+/Li) even at an operating temperature of 55oC. Another highlight in the center is gel polymer electrolyte (GPE) that enables enhancement of lithium-ion transference number of 0.57 by the existence of the imidazolium group. The newly designed GPE guaranteed effective Li+ pathways in electrolyte bulk and at electrode/electrolyte interfaces, a high potential of 5.4 V, and simplicity of electrolyte synthesis and all-solid-state battery assembly for industrial-scale production processes.

MOF-derived hollow NiCo2O4 nanowires as stable Li-ion battery anodes

2020 ◽  
Vol 49 (31) ◽  
pp. 10808-10815 ◽  
Author(s):  
Kainian Chu ◽  
Zhiqiang Li ◽  
Shikai Xu ◽  
Ge Yao ◽  
Yang Xu ◽  
...  
Keyword(s):  
Metal Oxides ◽  
Lithium Ion Batteries ◽  
Volume Expansion ◽  
Anode Materials ◽  
Electrode Materials ◽  
Lithium Ion ◽  
Li Ion Battery ◽  
Binary Metal Oxides ◽  
Li Ion ◽  
Power Densities

Binary metal oxides with high theoretical specific capacities and power densities are promising anode materials for lithium-ion batteries but their poor cycling stability and huge volume expansion limit their extensive application in practical electrode materials.

MnO nanoparticles embedded in a carbon matrix for a high performance Li ion battery anode

RSC Advances ◽  
2015 ◽  
Vol 5 (27) ◽  
pp. 21066-21073 ◽  
Author(s):  
Chunyu Zhu ◽  
Nan Sheng ◽  
Tomohiro Akiyama
Keyword(s):  
Lithium Ion Batteries ◽  
Anode Materials ◽  
High Performance ◽  
Manganese Oxides ◽  
Lithium Ion ◽  
Carbon Matrix ◽  
Li Ion Battery ◽  
Li Ion ◽  
Battery Anode

Manganese oxides are promising anode materials for lithium ion batteries based on conversion reactions.

scholarly journals Recent Advances and Perspectives of Carbon-Based Nanostructures as Anode Materials for Li-ion Batteries

Materials ◽  
2019 ◽  
Vol 12 (8) ◽  
pp. 1229 ◽  
Author(s):  
L. Selva Roselin ◽  
Ruey-Shin Juang ◽  
Chien-Te Hsieh ◽  
Suresh Sagadevan ◽  
Ahmad Umar ◽  
...  
Keyword(s):  
Anode Materials ◽  
Carbon Nanomaterials ◽  
Electrode Materials ◽  
Lithium Ion ◽  
Li Ion Batteries ◽  
Li Ion Battery ◽  
Advantages And Disadvantages ◽  
Recent Advances ◽  
Li Ion ◽  
Carbon Based

Rechargeable batteries are attractive power storage equipment for a broad diversity of applications. Lithium-ion (Li-ion) batteries are widely used the superior rechargeable battery in portable electronics. The increasing needs in portable electronic devices require improved Li-ion batteries with excellent results over many discharge-recharge cycles. One important approach to ensure the electrodes’ integrity is by increasing the storage capacity of cathode and anode materials. This could be achieved using nanoscale-sized electrode materials. In the article, we review the recent advances and perspectives of carbon nanomaterials as anode material for Lithium-ion battery applications. The first section of the review presents the general introduction, industrial use, and working principles of Li-ion batteries. It also demonstrates the advantages and disadvantages of nanomaterials and challenges to utilize nanomaterials for Li-ion battery applications. The second section of the review describes the utilization of various carbon-based nanomaterials as anode materials for Li-ion battery applications. The last section presents the conclusion and future directions.

MnO2 Nanoparticles Anchored Multi Walled Carbon Nanotubes as Potential Anode Materials for Lithium Ion Batteries

2021 ◽  
Vol 21 (10) ◽  
pp. 5296-5301
Author(s):  
Ahmad Umar ◽  
Faheem Ahmed ◽  
Ahmed A. Ibrahim ◽  
Hassan Algadi ◽  
Hasan B. Albargi ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Anode Materials ◽  
Coulombic Efficiency ◽  
Lithium Ion ◽  
Reversible Capacity ◽  
Li Ion Battery ◽  
Multi Walled Carbon Nanotubes ◽  
Li Ion ◽  
Walled Carbon Nanotubes ◽  
Charge Discharge

Herein, we report a facile hydrothermal synthesis of MnO2 nanoparticles anchored multi walled carbon nanotubes (MnO2@MWCNTs) as potential anode materials for lithium-ion (Li-ion) batteries. The prepared MnO2@MWCNTs were characterized by several techniques which confirmed the formation of MnO2 nanoparticles anchored MWCNTs. The X-ray diffraction and Raman-scattering analyses of the prepared material further revealed the effective synthesis of MnO2@MWCNTs. The fabricated Li-ion battery based on MnO2@MWCNTs exhibited a reversible capacity of ~823 mAhg−1 at a current density of 100 mAg−1 for the first cycle, and delivered a capacity of ~421 mAhg−1 for the 60 cycles. The coulombic efficiency was found to be ~100% which showed excellent reversible charge–discharge behavior. The outstanding performance of the MnO2@MWCNTs anode for the Li-ion battery can be attributed to the distinctive morphology of the MnO2 nanoparticles anchored MWCNTs that facilitated the fast transport of lithium ions and electrons and accommodated a broad volume change during the cycles of charge/discharge.

Sign in / Sign up

Export Citation Format

Share Document