A wet-chemical route for macroporous inverse opal Ge anodes for lithium ion batteries with high capacity retention

2018 ◽  
Vol 2 (1) ◽  
pp. 85-90 ◽  
Author(s):  
Sebastian Geier ◽  
Roland Jung ◽  
Kristina Peters ◽  
Hubert A. Gasteiger ◽  
Dina Fattakhova-Rohlfing ◽  
...  
Keyword(s):  
Lithium Ion Batteries ◽  
Electronic Conductivity ◽  
Specific Capacity ◽  
High Capacity ◽  
Lithium Ion ◽  
Capacity Retention ◽  
Chemical Route ◽  
High Specific Capacity ◽  
Wet Chemical ◽  
Wet Chemical Route

Germanium holds great potential as an anode material for lithium ion batteries due to its high specific capacity and its favorable properties such as good lithium ion diffusivity and electronic conductivity.

scholarly journals Improvement of long-term cycling performance of high-nickel cathode materials by ZnO coating

2021 ◽  
Vol 10 (1) ◽  
pp. 210-220
Author(s):  
Fangfang Wang ◽  
Ruoyu Hong ◽  
Xuesong Lu ◽  
Huiyong Liu ◽  
Yuan Zhu ◽  
...  
Keyword(s):  
Electrochemical Performance ◽  
Lithium Ion Batteries ◽  
Solid Phase ◽  
Low Cost ◽  
Specific Capacity ◽  
High Capacity ◽  
Lithium Ion ◽  
Side Reaction ◽  
Chemical Route ◽  
High Nickel

Abstract The high-nickel cathode material of LiNi0.8Co0.15Al0.05O2 (LNCA) has a prospective application for lithium-ion batteries due to the high capacity and low cost. However, the side reaction between the electrolyte and the electrode seriously affects the cycling stability of lithium-ion batteries. In this work, Ni2+ preoxidation and the optimization of calcination temperature were carried out to reduce the cation mixing of LNCA, and solid-phase Al-doping improved the uniformity of element distribution and the orderliness of the layered structure. In addition, the surface of LNCA was homogeneously modified with ZnO coating by a facile wet-chemical route. Compared to the pristine LNCA, the optimized ZnO-coated LNCA showed excellent electrochemical performance with the first discharge-specific capacity of 187.5 mA h g−1, and the capacity retention of 91.3% at 0.2C after 100 cycles. The experiment demonstrated that the improved electrochemical performance of ZnO-coated LNCA is assigned to the surface coating of ZnO which protects LNCA from being corroded by the electrolyte during cycling.

An artificial sea urchin with hollow spines: improved mechanical and electrochemical stability in high-capacity Li–Ge batteries

Nanoscale ◽  
2020 ◽  
Vol 12 (10) ◽  
pp. 5812-5816 ◽  
Author(s):  
Jinyun Liu ◽  
Xirong Lin ◽  
Tianli Han ◽  
Qianqian Lu ◽  
Jiawei Long ◽  
...  
Keyword(s):  
Lithium Ion Batteries ◽  
Sea Urchin ◽  
Specific Capacity ◽  
High Capacity ◽  
Rate Capability ◽  
Lithium Ion ◽  
Electrochemical Stability ◽  
High Rate ◽  
High Rate Capability ◽  
High Specific Capacity

Metallic germanium (Ge) as the anode can deliver a high specific capacity and high rate capability in lithium ion batteries.

Wet chemical route to the synthesis of kesterite Cu2ZnSnS4 nanocrystals and their applications in lithium ion batteries

2013 ◽  
Vol 92 ◽  
pp. 330-333 ◽  
Author(s):  
Junjie Li ◽  
Jie Shen ◽  
Zhiqiang Li ◽  
Xiaodong Li ◽  
Zhou Sun ◽  
...  
Keyword(s):  
Lithium Ion Batteries ◽  
Lithium Ion ◽  
Chemical Route ◽  
Wet Chemical ◽  
Wet Chemical Route

Low-temperature reduction–pyrolysis–catalysis synthesis of carbon nanospheres for lithium-ion batteries

RSC Advances ◽  
2015 ◽  
Vol 5 (68) ◽  
pp. 55474-55477 ◽  
Author(s):  
Lingqing Dong ◽  
Xufeng Yan ◽  
Kui Cheng ◽  
Wenjian Weng ◽  
Weiqiang Han
Keyword(s):  
Low Temperature ◽  
Lithium Ion Batteries ◽  
Specific Capacity ◽  
Lithium Ion ◽  
Carbon Nanospheres ◽  
Capacity Retention ◽  
Charge Capacity ◽  
High Specific Capacity ◽  
Charge Discharge ◽  
Catalysis Process

Carbon nanospheres synthesized using a reduction–pyrolysis–catalysis process at low temperature (160 °C) show a high specific capacity of 719 mA h g−1 at a rate of 0.2 A g−1 (98.5% charge capacity retention) after 100 charge–discharge cycles.

scholarly journals The Effect of Annealing Temperature on the Synthesis of Nickel Ferrite Films as High-Capacity Anode Materials for Lithium Ion Batteries

Nanomaterials ◽  
2021 ◽  
Vol 11 (12) ◽  
pp. 3238
Author(s):  
Mansoo Choi ◽  
Sung-Joo Shim ◽  
Yang-Il Jung ◽  
Hyun-Soo Kim ◽  
Bum-Kyoung Seo
Keyword(s):  
Lithium Ion Batteries ◽  
Anode Materials ◽  
Specific Capacity ◽  
High Capacity ◽  
Lithium Ion ◽  
Cycling Performance ◽  
High Specific Capacity ◽  
High Discharge Capacity ◽  
Lower Temperature ◽  
Libs Applications

Anode materials providing a high specific capacity with a high cycling performance are one of the key parameters for lithium ion batteries’ (LIBs) applications. Herein, a high-capacity NiFe2O4(NFO) film anode is prepared by E-beam evaporation, and the effect of the heat treatment is studied on the microstructure and electrochemical properties of LIBs. The NiFe2O4 film annealed at 800 °C (NFO-800) showed a highly crystallized structure and different surface morphologies when compared to the electrode annealed at a lower temperature (NFO-600, NFO-700). In the electrochemical measurements, the high specific capacity (1804 mA g−1) and capacity retention ratio (95%) after 100 cycles were also achieved by the NFO-800 electrode. The main reason for the good electrochemical performance of the NFO-800 electrode is a high structure integrity, which could improve the cycle stability with a high discharge capacity. The NiFe2O4 electrode with an annealing process could be further proposed as an alternative ferrite material.

High specific capacity of TiO2-graphene nanocomposite as an anode material for lithium-ion batteries in an enlarged potential window

2012 ◽  
Vol 74 ◽  
pp. 65-72 ◽  
Author(s):  
Dandan Cai ◽  
Peichao Lian ◽  
Xuefeng Zhu ◽  
Shuzhao Liang ◽  
Weishen Yang ◽  
...  
Keyword(s):  
Lithium Ion Batteries ◽  
Anode Material ◽  
Specific Capacity ◽  
Lithium Ion ◽  
High Specific Capacity ◽  
Graphene Nanocomposite

Coal-derived synthetic graphite with high specific capacity and excellent cyclic stability as anode material for lithium-ion batteries

Fuel ◽  
2021 ◽  
Vol 292 ◽  
pp. 120250
Author(s):  
Ming Shi ◽  
Changlei Song ◽  
Zige Tai ◽  
Kunyang Zou ◽  
Yue Duan ◽  
...  
Keyword(s):  
Lithium Ion Batteries ◽  
Anode Material ◽  
Specific Capacity ◽  
Lithium Ion ◽  
Cyclic Stability ◽  
High Specific Capacity ◽  
Synthetic Graphite

scholarly journals Wire-in-Wire TiO2/C Nanofibers Free-Standing Anodes for Li-Ion and K-Ion Batteries with Long Cycling Stability and High Capacity

2021 ◽  
Vol 13 (1) ◽  
Author(s):  
Die Su ◽  
Yi Pei ◽  
Li Liu ◽  
Zhixiao Liu ◽  
Junfang Liu ◽  
...  
Keyword(s):  
Critical Role ◽  
Electronic Conductivity ◽  
Specific Capacity ◽  
High Capacity ◽  
Cycling Stability ◽  
Free Standing ◽  
High Specific Capacity ◽  
Tetracarboxylic Dianhydride ◽  
Carbon Network

AbstractWearable and portable mobile phones play a critical role in the market, and one of the key technologies is the flexible electrode with high specific capacity and excellent mechanical flexibility. Herein, a wire-in-wire TiO2/C nanofibers (TiO2 ww/CN) film is synthesized via electrospinning with selenium as a structural inducer. The interconnected carbon network and unique wire-in-wire nanostructure cannot only improve electronic conductivity and induce effective charge transports, but also bring a superior mechanic flexibility. Ultimately, TiO2 ww/CN film shows outstanding electrochemical performance as free-standing electrodes in Li/K ion batteries. It shows a discharge capacity as high as 303 mAh g−1 at 5 A g−1 after 6000 cycles in Li half-cells, and the unique structure is well-reserved after long-term cycling. Moreover, even TiO2 has a large diffusion barrier of K+, TiO2 ww/CN film demonstrates excellent performance (259 mAh g−1 at 0.05 A g−1 after 1000 cycles) in K half-cells owing to extraordinary pseudocapacitive contribution. The Li/K full cells consisted of TiO2 ww/CN film anode and LiFePO4/Perylene-3,4,9,10-tetracarboxylic dianhydride cathode possess outstanding cycling stability and demonstrate practical application from lighting at least 19 LEDs. It is, therefore, expected that this material will find broad applications in portable and wearable Li/K-ion batteries.

scholarly journals The influence of different Si : C ratios on the electrochemical performance of silicon/carbon layered film anodes for lithium-ion batteries

RSC Advances ◽  
2018 ◽  
Vol 8 (12) ◽  
pp. 6660-6666 ◽  
Author(s):  
Jun Wang ◽  
Shengli Li ◽  
Yi Zhao ◽  
Juan Shi ◽  
Lili Lv ◽  
...  
Keyword(s):  
Electrochemical Performance ◽  
Lithium Ion Batteries ◽  
Anode Materials ◽  
Specific Capacity ◽  
Lithium Ion ◽  
Lithium Ions ◽  
High Specific Capacity ◽  
Silicon Carbon ◽  
Silicon Based

With a high specific capacity (4200 mA h g−1), silicon based materials have become the most promising anode materials in lithium-ions batteries.

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