scholarly journals Seaweed-Liked WS2/rGO Enabling Ultralong Cycling Life and Enhanced Rate Capability for Lithium-Ion Batteries

Nanomaterials ◽  
2019 ◽  
Vol 9 (3) ◽  
pp. 469 ◽  
Author(s):  
Yi Huang ◽  
Yu Jiang ◽  
Zhaofei Ma ◽  
Yan Zhang ◽  
Xianfeng Zheng ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Lithium Ion Batteries ◽  
Electrochemical Property ◽  
Active Sites ◽  
Rate Capability ◽  
Lithium Ion ◽  
Ammonium Ion ◽  
Self Assembling ◽  
Charge Transfer Rate ◽  
Reduced Graphene

WS2 is considered as a potential anode material for lithium ion batteries (LIBs) with superior theoretical capacity and stable structure with two-dimensional which facilitates to the transportation and storage of lithium ion. Nevertheless, the commercial recognition of WS2 has been impeded by the intrinsic properties of WS2, including poor electrical conductivity and large volume expansion. Herein, a seaweed-liked WS2/reduced graphene oxide (rGO) composites has been fabricated through a procedure involving the self-assembling of WO42−, hexadecyl trimethyl ammonium ion with graphene oxide (GO) and the subsequent thermal treatment. The WS2/rGO nanocomposite exhibited the outstanding electrochemical property with a stable and remarkable capacity (507.7 mAh·g−1) at 1.0 A·g−1 even after 1000 cycles. This advanced electrochemical property is due to its seaweed-liked feature which can bring in plentiful active sites, ameliorate the stresses arisen from volume variations and increase charge transfer rate.

scholarly journals Facile Synthesis of Sn/Nitrogen-Doped Reduced Graphene Oxide Nanocomposites with Superb Lithium Storage Properties

Nanomaterials ◽  
2019 ◽  
Vol 9 (8) ◽  
pp. 1084 ◽  
Author(s):  
Quan Sun ◽  
Ying Huang ◽  
Shi Wu ◽  
Zhonghui Gao ◽  
Hang Liu ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Active Sites ◽  
Electronic Conductivity ◽  
Rate Capability ◽  
Lithium Ion ◽  
Discharge Process ◽  
Lithium Storage ◽  
Nitrogen Doped ◽  
Reduced Graphene

Sn/Nitrogen-doped reduced graphene oxide (Sn@N-G) composites have been successfully synthesized via a facile method for lithium-ion batteries. Compared with the Sn or Sn/graphene anodes, the Sn@N-G anode exhibits a superb rate capability of 535 mAh g−1 at 2C and cycling stability up to 300 cycles at 0.5C. The improved lithium-storage performance of Sn@N-G anode could be ascribed to the effective graphene wrapping, which accommodates the large volume change of Sn during the charge–discharge process, while the nitrogen doping increases the electronic conductivity of graphene, as well as provides a large number of active sites as reservoirs for Li+ storage.

Li4Ti5O12/Reduced Graphene Oxide composite as a high rate capability material for lithium ion batteries

2013 ◽  
Vol 236 ◽  
pp. 30-36 ◽  
Author(s):  
Qian Zhang ◽  
Wenjie Peng ◽  
Zhixing Wang ◽  
Xinhai Li ◽  
Xunhui Xiong ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Lithium Ion Batteries ◽  
Reduced Graphene Oxide ◽  
Rate Capability ◽  
Lithium Ion ◽  
High Rate ◽  
High Rate Capability ◽  
Oxide Composite ◽  
Reduced Graphene

High-rate sodium insertion/extraction into silicon oxycarbide-reduced graphene oxide

2020 ◽  
Vol 44 (33) ◽  
pp. 14035-14040
Author(s):  
Rio Nugraha Putra ◽  
Martin Halim ◽  
Ghulam Ali ◽  
Shoyebmohamad F. Shaikh ◽  
Abdullah M. Al-Enizi ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Lithium Ion Batteries ◽  
Reduced Graphene Oxide ◽  
Rate Capability ◽  
Lithium Ion ◽  
Reversible Capacity ◽  
Silicon Oxycarbide ◽  
High Rate ◽  
High Rate Capability ◽  
Reduced Graphene

Silicone oxycarbide (SiOC) is gaining attention as a potential anode material for lithium-ion batteries due to its higher reversible capacity and high-rate capability.

Synthesis of hydrogenated TiO2–reduced-graphene oxide nanocomposites and their application in high rate lithium ion batteries

2014 ◽  
Vol 2 (24) ◽  
pp. 9150-9155 ◽  
Author(s):  
Jie Wang ◽  
Laifa Shen ◽  
Ping Nie ◽  
Guiyin Xu ◽  
Bing Ding ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Lithium Ion Batteries ◽  
Reduced Graphene Oxide ◽  
Rate Capability ◽  
Lithium Ion ◽  
High Rate ◽  
Capacity Retention ◽  
One Pot ◽  
Reduced Graphene

Hydrogenated TiO2–RGO nanocomposites have been synthesized via a facile one-pot hydrogenation, which exhibit superior rate capability and outstanding capacity retention.

scholarly journals Direct self-assembly of Fe2O3/reduced graphene oxide nanocomposite for high-performance lithium-ion batteries

2015 ◽  
Vol 3 (21) ◽  
pp. 11566-11574 ◽  
Author(s):  
Lisong Xiao ◽  
Matthias Schroeder ◽  
Sebastian Kluge ◽  
Andrea Balducci ◽  
Ulrich Hagemann ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Low Temperature ◽  
Lithium Ion Batteries ◽  
Self Assembly ◽  
High Performance ◽  
Reduction Process ◽  
Lithium Ion ◽  
Self Assembling ◽  
Reduced Graphene ◽  
Hydrothermal Reduction

Fe2O3/rGO nanocomposites were prepared by an electrostatic-interaction-induced self-assembling between the Fe2O3 NPs and the graphene oxide (GO) sheets, followed with a low-temperature hydrothermal reduction process.

scholarly journals Synthesis and Electrochemical Performance of Electrostatic Self-Assembled Nano-Silicon@N-Doped Reduced Graphene Oxide/Carbon Nanofibers Composite as Anode Material for Lithium-Ion Batteries

Molecules ◽  
2021 ◽  
Vol 26 (16) ◽  
pp. 4831
Author(s):  
Ruye Cong ◽  
Hyun-Ho Park ◽  
Minsang Jo ◽  
Hochun Lee ◽  
Chang-Seop Lee
Keyword(s):  
Graphene Oxide ◽  
Lithium Ion Batteries ◽  
Reduced Graphene Oxide ◽  
Silicon Nanoparticles ◽  
Carbon Nanofiber ◽  
Specific Capacity ◽  
Rate Capability ◽  
Lithium Ion ◽  
Electrode Structure ◽  
Reduced Graphene

Silicon-carbon nanocomposite materials are widely adopted in the anode of lithium-ion batteries (LIB). However, the lithium ion (Li+) transportation is hampered due to the significant accumulation of silicon nanoparticles (Si) and the change in their volume, which leads to decreased battery performance. In an attempt to optimize the electrode structure, we report on a self-assembly synthesis of silicon nanoparticles@nitrogen-doped reduced graphene oxide/carbon nanofiber (Si@N-doped rGO/CNF) composites as potential high-performance anodes for LIB through electrostatic attraction. A large number of vacancies or defects on the graphite plane are generated by N atoms, thus providing transmission channels for Li+ and improving the conductivity of the electrode. CNF can maintain the stability of the electrode structure and prevent Si from falling off the electrode. The three-dimensional composite structure of Si, N-doped rGO, and CNF can effectively buffer the volume changes of Si, form a stable solid electrolyte interface (SEI), and shorten the transmission distance of Li+ and the electrons, while also providing high conductivity and mechanical stability to the electrode. The Si@N-doped rGO/CNF electrode outperforms the Si@N-doped rGO and Si/rGO/CNF electrodes in cycle performance and rate capability, with a reversible specific capacity reaching 1276.8 mAh/g after 100 cycles and a Coulomb efficiency of 99%.

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