scholarly journals Synthesis and electrochemical properties of Li1.3Nb0.3Cr0.4O2 as a high-capacity cathode material for rechargeable lithium batteries

2018 ◽  
Vol 54 (98) ◽  
pp. 13809-13812 ◽  
Author(s):  
Weiwen Wang ◽  
Jingke Meng ◽  
Xinyang Yue ◽  
Qinchao Wang ◽  
Xinxin Wang ◽  
...  
Keyword(s):  
Cathode Material ◽  
Electrochemical Properties ◽  
Lithium Batteries ◽  
Redox Reaction ◽  
High Capacity ◽  
Reversible Capacity ◽  
Rechargeable Lithium Batteries ◽  
High Reversible Capacity

A cation-disordered Li-excess material (Li1.3Cr0.4Nb0.3O2) delivers a high reversible capacity, originating from a Cr3+/Cr6+ three-electron redox reaction.

Anode property of carbon coated LiFePO4 nanocrystals

2016 ◽  
Vol 09 (01) ◽  
pp. 1650004 ◽  
Author(s):  
Jiangfeng Ni ◽  
Jiaxing Jiang ◽  
S. V. Savilov ◽  
S. M. Aldoshin
Keyword(s):  
Cathode Material ◽  
Lithium Batteries ◽  
Reversible Capacity ◽  
Rechargeable Battery ◽  
Potential Range ◽  
Rechargeable Lithium Batteries ◽  
Capacity Fading ◽  
High Reversible Capacity ◽  
Carbon Coated ◽  
A Current

Nanostructured LiFePO4 is appealing cathode material for rechargeable lithium batteries. Herein, however, we report the intriguing anode properties of carbon coated LiFePO4 nanocrystals. In the potential range of 0–3.0 V, the LiFePO4 nanocrystal electrodes afford high reversible capacity of 373 mAh[Formula: see text]g[Formula: see text] at a current rate of 0.05 A[Formula: see text]g[Formula: see text] and retains 239 mAh[Formula: see text]g[Formula: see text] at a much higher rate of 1.25 A[Formula: see text]g[Formula: see text]. In addition, it is capable of sustaining 1000 cycles at 1.25 A[Formula: see text]g[Formula: see text] without any capacity fading. Such superior properties indicate that nanostructured LiFePO4 could also be promising anode for rechargeable battery applications.

scholarly journals High-capacity electrode materials for rechargeable lithium batteries: Li3NbO4-based system with cation-disordered rocksalt structure

2015 ◽  
Vol 112 (25) ◽  
pp. 7650-7655 ◽  
Author(s):  
Naoaki Yabuuchi ◽  
Mitsue Takeuchi ◽  
Masanobu Nakayama ◽  
Hiromasa Shiiba ◽  
Masahiro Ogawa ◽  
...  
Keyword(s):  
Solid State ◽  
Transition Metals ◽  
Lithium Batteries ◽  
Electrode Materials ◽  
High Capacity ◽  
Reversible Capacity ◽  
Charge Compensation ◽  
Rechargeable Lithium Batteries ◽  
High Reversible Capacity ◽  
Oxide Ions

Rechargeable lithium batteries have rapidly risen to prominence as fundamental devices for green and sustainable energy development. Lithium batteries are now used as power sources for electric vehicles. However, materials innovations are still needed to satisfy the growing demand for increasing energy density of lithium batteries. In the past decade, lithium-excess compounds, Li2MeO3 (Me = Mn4+, Ru4+, etc.), have been extensively studied as high-capacity positive electrode materials. Although the origin as the high reversible capacity has been a debatable subject for a long time, recently it has been confirmed that charge compensation is partly achieved by solid-state redox of nonmetal anions (i.e., oxide ions), coupled with solid-state redox of transition metals, which is the basic theory used for classic lithium insertion materials, such as LiMeO2 (Me = Co3+, Ni3+, etc.). Herein, as a compound with further excess lithium contents, a cation-ordered rocksalt phase with lithium and pentavalent niobium ions, Li3NbO4, is first examined as the host structure of a new series of high-capacity positive electrode materials for rechargeable lithium batteries. Approximately 300 mAh⋅g−1 of high-reversible capacity at 50 °C is experimentally observed, which partly originates from charge compensation by solid-state redox of oxide ions. It is proposed that such a charge compensation process by oxide ions is effectively stabilized by the presence of electrochemically inactive niobium ions. These results will contribute to the development of a new class of high-capacity electrode materials, potentially with further lithium enrichment (and fewer transition metals) in the close-packed framework structure with oxide ions.

In Situ Electrochemical XAFS Studies on an Iron Fluoride High-Capacity Cathode Material for Rechargeable Lithium Batteries

2013 ◽  
Vol 117 (22) ◽  
pp. 11498-11505 ◽  
Author(s):  
Wei Zhang ◽  
Paul N. Duchesne ◽  
Zheng-Liang Gong ◽  
Shun-Qing Wu ◽  
Lin Ma ◽  
...  
Keyword(s):  
Cathode Material ◽  
Lithium Batteries ◽  
High Capacity ◽  
Rechargeable Lithium Batteries ◽  
Iron Fluoride

Pyrite FeS2–C composite as a high capacity cathode material of rechargeable lithium batteries

RSC Advances ◽  
2015 ◽  
Vol 5 (107) ◽  
pp. 87847-87854 ◽  
Author(s):  
Dat T. Tran ◽  
Hong Dong ◽  
Scott D. Walck ◽  
Sheng S. Zhang
Keyword(s):  
Cathode Material ◽  
Lithium Batteries ◽  
High Capacity ◽  
Rate Capability ◽  
Rechargeable Lithium Batteries ◽  
Capacity Fading ◽  
Nucleophilic Reaction ◽  
Lithium Polysulfide

A FeS2–C composite shows improved rate capability but still suffers from fast capacity fading due to either dissolution of lithium polysulfide in ether-based electrolytes or nucleophilic reaction of polysulfide anions in carbonate-based electrolytes.

scholarly journals Organotrisulfide: A High Capacity Cathode Material for Rechargeable Lithium Batteries

2016 ◽  
Vol 55 (34) ◽  
pp. 10027-10031 ◽  
Author(s):  
Min Wu ◽  
Yi Cui ◽  
Amruth Bhargav ◽  
Yaroslav Losovyj ◽  
Amanda Siegel ◽  
...  
Keyword(s):  
Cathode Material ◽  
Lithium Batteries ◽  
High Capacity ◽  
Rechargeable Lithium Batteries

scholarly journals Organotrisulfide: A High Capacity Cathode Material for Rechargeable Lithium Batteries

2016 ◽  
Vol 128 (34) ◽  
pp. 10181-10185 ◽  
Author(s):  
Min Wu ◽  
Yi Cui ◽  
Amruth Bhargav ◽  
Yaroslav Losovyj ◽  
Amanda Siegel ◽  
...  
Keyword(s):  
Cathode Material ◽  
Lithium Batteries ◽  
High Capacity ◽  
Rechargeable Lithium Batteries
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