The Role of Oxygen in Low-potential Li Insertion in Metal Oxide Anode Materials

MRS Proceedings ◽

10.1557/proc-575-173 ◽

1999 ◽

Vol 575 ◽

Cited By ~ 1

Author(s):

F. Leroux ◽

L. F. Nazar

Keyword(s):

Transition Metal Oxides ◽

Anode Materials ◽

High Capacity ◽

Active Centers ◽

Lithium Storage ◽

Depth Of Discharge ◽

Free Energy Of Formation ◽

The Matrix ◽

X Ray Absorption

ABSTRACTTransition metal oxides are high-capacity lithium storage materials of interest as possible anode materials in the next generation of Li ion batteries. By using X-ray absorption spectroscopy we have obtained an understanding of the process of Li uptake and removal within Na0.25MoO3. Our results show the Li2O matrix on reduction is not inert; Mo-O bonds are reversibly consumed on discharge and are regenerated on charge, with the Li2O matrix acting as the oxygen reservoir. The migration of oxygen atoms from the matrix to the active centers occurs at a voltage below that expected for the Li2O free energy of formation. Polarization on charge is not due only to oxygen migration but also to metal rearrangement within the electrode material. The reversibility of the Mo-O bond formation on repeated cycles is a function of the depth of discharge, with 200 mV being the lower limit.

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Engineering flexible carbon nanofibers concatenated MOFs-derived hollow octahedral CoFe2O4 as anode materials for enhanced lithium storage

Inorganic Chemistry Frontiers ◽

10.1039/d1qi00414j ◽

2021 ◽

Author(s):

Fangfang Xue ◽

Yangyang Li ◽

Chen Liu ◽

Zhigang Zhang ◽

Jun Lin ◽

...

Keyword(s):

Mechanical Property ◽

Anode Materials ◽

Electrode Materials ◽

Electronic Devices ◽

High Capacity ◽

Lithium Ion ◽

Lithium Storage ◽

Excellent Mechanical Property ◽

Wearable Electronic ◽

Wearable Electronic Devices

Constructing suitable electrode materials with high capacity and excellent mechanical property is indispensable for flexible lithium-ion batteries (LIBs) to satisfy the growing flexible and wearable electronic devices. Herein, a necklace-like...

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Novel Two-Dimensional Carbon Nanomaterials: Synthesis and Excellent Lithium Storage Properties

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.1070-1072.483 ◽

2014 ◽

Vol 1070-1072 ◽

pp. 483-487

Author(s):

Yong Qiang Yang ◽

Hong Kang Deng ◽

Ling Jin ◽

Yuan Liu ◽

Yao Lu

Keyword(s):

Anode Materials ◽

Carbon Nanomaterials ◽

High Capacity ◽

Lithium Ion ◽

Inert Atmosphere ◽

Two Dimensional ◽

Lithium Storage ◽

Structure Directing Agent ◽

Nanomaterials Synthesis ◽

Storage Properties

A novel two-dimensional carbon nanomaterials was prepared through a facile hydrothermal method, using glucose as the carbon precursor and sodium borohydride as the structure directing agent. The application of as-obtained carbon nanomaterials after annealing in inert atmosphere as the anode of lithium ion batteries (LIBs) was explored. The results demonstrate the carbon nanomaterials can exhibit more excellent lithium storage properties with high capacity and superior rate properties than the graphite as a kind of common anode materials.

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Sulfurization synthesis of a new anode material for Li-ion batteries: understanding the role of sulfurization in lithium ion conversion reactions and promoting lithium storage performance

Journal of Materials Chemistry A ◽

10.1039/c9ta08394d ◽

2019 ◽

Vol 7 (37) ◽

pp. 21270-21279 ◽

Cited By ~ 1

Author(s):

Yanmin Qin ◽

Zhongqing Jiang ◽

Liping Guo ◽

Jianlin Huang ◽

Zhong-Jie Jiang ◽

...

Keyword(s):

Anode Material ◽

High Capacity ◽

Lithium Ion ◽

Li Ion Batteries ◽

Lithium Storage ◽

Storage Performance ◽

Carbon Coated ◽

Li Ion ◽

Good Cycling Stability

N, S co-doped carbon coated MnOS (MnOS@NSC) has been demonstrated to be a potential anode material for LIBs with high capacity, good cycling stability and excellent rate performance.

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Facile synthesis of vanadyl acetate one-dimensional nanobelts toward a novel anode for lithium storage

Dalton Transactions ◽

10.1039/d1dt01930a ◽

2021 ◽

Author(s):

Ni Wen ◽

Siyuan Chen ◽

xiaolong Li ◽

Ke Zhang ◽

Jingjie Feng ◽

...

Keyword(s):

Metal Oxides ◽

Lithium Ion Batteries ◽

Transition Metal Oxides ◽

Anode Materials ◽

Specific Capacity ◽

Lithium Ion ◽

Facile Synthesis ◽

Lithium Storage ◽

One Dimensional ◽

Theoretical Specific Capacity

Transition metal oxides (TMOs) are prospective anode materials for lithium-ion batteries (LIBs) owing to their high theoretical specific capacity. Whereas, the inherent low conductivity of TMOs restricts its application. Given...

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Constructing epitaxial grown heterointerface of metal nanoparticles and manganese dioxide anode for high-capacity and high-rate lithium-ion batteries

Nanoscale ◽

10.1039/d1nr06620j ◽

2021 ◽

Author(s):

Jianwei Zhang ◽

Danyang Huang ◽

Yuchen Wang ◽

Liang Chang ◽

Yanying Yu ◽

...

Keyword(s):

Transition Metal Oxides ◽

Migration Rate ◽

Anode Materials ◽

High Capacity ◽

Lithium Ion ◽

High Rate ◽

Metal Particles ◽

Li Ion Batteries ◽

Ion Migration ◽

Li Ion

Low ion migration rate and irreversible change in the valence state in transition-metal oxides limited their application as anode materials in Li-ion batteries (LIBs). Interfacial optimization by loading metal particles...

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Dynamics of matrix-free Ca2+ in cardiac mitochondria: two components of Ca2+ uptake and role of phosphate buffering

The Journal of General Physiology ◽

10.1085/jgp.201210784 ◽

2012 ◽

Vol 139 (6) ◽

pp. 465-478 ◽

Cited By ~ 53

Author(s):

An-Chi Wei ◽

Ting Liu ◽

Raimond L. Winslow ◽

Brian O'Rourke

Keyword(s):

Mitochondrial Permeability Transition ◽

High Capacity ◽

Permeability Transition Pore ◽

Permeability Transition ◽

Cardiac Mitochondria ◽

The Matrix ◽

The Relationship ◽

Matrix Free ◽

Trigger Cell Death

Mitochondrial Ca2+ uptake is thought to provide an important signal to increase energy production to meet demand but, in excess, can also trigger cell death. The mechanisms defining the relationship between total Ca2+ uptake, changes in mitochondrial matrix free Ca2+, and the activation of the mitochondrial permeability transition pore (PTP) are not well understood. We quantitatively measure changes in [Ca2+]out and [Ca2+]mito during Ca2+ uptake in isolated cardiac mitochondria and identify two components of Ca2+ influx. [Ca2+]mito recordings revealed that the first, MCUmode1, required at least 1 µM Ru360 to be completely inhibited, and responded to small Ca2+ additions in the range of 0.1 to 2 µM with rapid and large changes in [Ca2+]mito. The second component, MCUmode2, was blocked by 100 nM Ru360 and was responsible for the bulk of total Ca2+ uptake for large Ca2+ additions in the range of 2 to 10 µM; however, it had little effect on steady-state [Ca2+]mito. MCUmode1 mediates changes in [Ca2+]mito of 10s of μM, even in the presence of 100 nM Ru360, indicating that there is a finite degree of Ca2+ buffering in the matrix associated with this pathway. In contrast, the much higher Ca2+ loads evoked by MCUmode2 activate a secondary dynamic Ca2+ buffering system consistent with calcium-phosphate complex formation. Increasing Pi potentiated [Ca2+]mito increases via MCUmode1 but suppressed [Ca2+]mito changes via MCUmode2. The results suggest that the role of MCUmode1 might be to modulate oxidative phosphorylation in response to intracellular Ca2+ signaling, whereas MCUmode2 and the dynamic high-capacity Ca2+ buffering system constitute a Ca2+ sink function. Interestingly, the trigger for PTP activation is unlikely to be [Ca2+]mito itself but rather a downstream byproduct of total mitochondrial Ca2+ loading.

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