Hierarchical architecture of WS2nanosheets on graphene frameworks with enhanced electrochemical properties for lithium storage and hydrogen evolution

2015 ◽  
Vol 3 (47) ◽  
pp. 24128-24138 ◽  
Author(s):  
Guowei Huang ◽  
Hao Liu ◽  
Shengping Wang ◽  
Xi Yang ◽  
Binhong Liu ◽  
...  
Keyword(s):  
Electrochemical Properties ◽  
Hydrogen Evolution ◽  
Synergistic Effects ◽  
Three Dimensional ◽  
Hierarchical Architecture ◽  
Lithium Storage

Three-dimensional interlayer-expanded WS2/3DG architecture exhibits enhanced electrochemical properties for lithium storage and hydrogen evolution due to synergistic effects between the components.

scholarly journals Improving the Cycling Stability of Fe3O4/NiO Anode for Lithium Ion Battery by Constructing Novel Bimodal Nanoporous Urchin Network

Nanomaterials ◽  
2020 ◽  
Vol 10 (9) ◽  
pp. 1890
Author(s):  
Xiaomin Zhang ◽  
Xiaoli Liu ◽  
Jun Zhou ◽  
Chunling Qin ◽  
Zhifeng Wang
Keyword(s):  
Porous Structure ◽  
Synergistic Effects ◽  
Three Dimensional ◽  
Lithium Ion ◽  
Reversible Capacity ◽  
Ionic Mobility ◽  
Cycling Stability ◽  
Discharge Process ◽  
Lithium Storage ◽  
Porous Network

The development of facile preparation methods and novel three-dimensional structured anodes to improve cycling stability of lithium ion batteries (LIBs) is urgently needed. Herein, a dual-network ferroferric oxide/nickel oxide (Fe3O4/NiO) anode was synthesized through a facile dealloying technology, which is suitable for commercial mass manufacturing. The dual-network with high specific surface area contains a nanoplate array network and a bimodal nanoporous urchin network. It exhibits excellent electrochemical performance as an anode material for LIB, delivering a reversible capacity of 721 mAh g−1 at 100 mA g−1 after 100 cycles. The good lithium storage performance is related to the ample porous structure, which can relieve stress and mitigate the volume change in the charge/discharge process, the interconnected porous network that enhances ionic mobility and permeability, and synergistic effects of two kinds of active materials. The paper provides a new idea for the design and preparation of anode materials with a novel porous structure by a dealloying method and may promote the development of the dealloying field.

Novel peapod-like Ni2P nanoparticles with improved electrochemical properties for hydrogen evolution and lithium storage

Nanoscale ◽  
2015 ◽  
Vol 7 (4) ◽  
pp. 1446-1453 ◽  
Author(s):  
Yuanjuan Bai ◽  
Huijuan Zhang ◽  
Xiao Li ◽  
Li Liu ◽  
Haitao Xu ◽  
...  
Keyword(s):  
Electrochemical Performance ◽  
Electrochemical Properties ◽  
Lithium Ion Batteries ◽  
High Activity ◽  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Lithium Ion ◽  
Lithium Storage ◽  
Excellent Electrochemical Performance

A novel peapod-like Ni2P/C nanocomposite is designed and synthesized using NiNH4PO4H2O nanorod sacrificial templates. The nanocomposite exhibits high activity and stability for the hydrogen evolution reaction and an excellent electrochemical performance for use in lithium ion batteries.

A three-dimensional hierarchically porous Mo2C architecture: salt-template synthesis of a robust electrocatalyst and anode material towards the hydrogen evolution reaction and lithium storage

2017 ◽  
Vol 5 (38) ◽  
pp. 20228-20238 ◽  
Author(s):  
Tao Meng ◽  
Lirong Zheng ◽  
Jinwen Qin ◽  
Di Zhao ◽  
Minhua Cao
Keyword(s):  
Hydrogen Evolution ◽  
Anode Material ◽  
Hydrogen Evolution Reaction ◽  
Template Synthesis ◽  
Three Dimensional ◽  
Template Method ◽  
Lithium Storage ◽  
Hierarchically Porous ◽  
Multifunctional Material

3DHP-Mo2C synthesized by a salt-template method can be used as a multifunctional material for the hydrogen evolution reaction and lithium storage.

scholarly journals The Synergistic Effects of Alloying on the Performance and Stability of Co3Mo and Co7Mo6 for the Electrocatalytic Hydrogen Evolution Reaction

Hydrogen ◽  
2020 ◽  
Vol 1 (1) ◽  
pp. 11-21
Author(s):  
Youyi Sun ◽  
Alexey Y. Ganin
Keyword(s):  
Hydrogen Evolution ◽  
Synergistic Effects ◽  
Alkaline Media ◽  
Price Of Stability ◽  
X Ray Diffraction ◽  
Free Standing ◽  
X Ray ◽  
Current Decay ◽  
Earth Abundant ◽  
Current Densities

Metal alloys have become a ubiquitous choice as catalysts for electrochemical hydrogen evolution in alkaline media. However, scarce and expensive Pt remains the key electrocatalyst in acidic electrolytes, making the search for earth-abundant and cheaper alternatives important. Herein, we present a facile and efficient synthetic route towards polycrystalline Co3Mo and Co7Mo6 alloys. The single-phased nature of the alloys is confirmed by X-ray diffraction and electron microscopy. When electrochemically tested, they achieve competitively low overpotentials of 115 mV (Co3Mo) and 160 mV (Co7Mo6) at 10 mA cm−2 in 0.5 M H2SO4, and 120 mV (Co3Mo) and 160 mV (Co7Mo6) at 10 mA cm−2 in 1 M KOH. Both alloys outperform Co and Mo metals, which showed significantly higher overpotentials and lower current densities when tested under identical conditions, confirming the synergistic effect of the alloying. However, the low overpotential in Co3Mo comes at the price of stability. It rapidly becomes inactive when tested under applied potential bias. On the other hand, Co7Mo6 retains the current density over time without evidence of current decay. The findings demonstrate that even in free-standing form and without nanostructuring, polycrystalline bimetallic electrocatalysts could challenge the dominance of Pt in acidic media if ways for improving their stability were found.

Nanoflakes-Assembled Three-Dimensional Hollow-Porous V2O5as Lithium Storage Cathodes with High-Rate Capacity

Small ◽  
2014 ◽  
Vol 10 (15) ◽  
pp. 3032-3037 ◽  
Author(s):  
Liqiang Mai ◽  
Qinyou An ◽  
Qiulong Wei ◽  
Jiayang Fei ◽  
Pengfei Zhang ◽  
...  
Keyword(s):  
Three Dimensional ◽  
High Rate ◽  
Lithium Storage ◽  
Rate Capacity

Construction of three-dimensional ZnCo2O4 hierarchical nanocubes for enhanced lithium storage performances

2021 ◽  
Vol 286 ◽  
pp. 129231
Author(s):  
Lingchang Wang ◽  
Mengmeng Zhen ◽  
Feng Hu ◽  
Hui Wang ◽  
Haiyang Jia ◽  
...  
Keyword(s):  
Three Dimensional ◽  
Lithium Storage

Metal–organic framework-derived CoSe2/(NiCo)Se2 box-in-box hollow nanocubes with enhanced electrochemical properties for sodium-ion storage and hydrogen evolution

2017 ◽  
Vol 5 (35) ◽  
pp. 18823-18830 ◽  
Author(s):  
Seung-Keun Park ◽  
Jin Koo Kim ◽  
Yun Chan Kang
Keyword(s):  
Electrochemical Properties ◽  
Hydrogen Evolution ◽  
Metal Organic Framework ◽  
Sodium Ion ◽  
Zeolitic Imidazolate Framework ◽  
Box Structures ◽  
Ion Storage ◽  
Metal Organic ◽  
Sodium Ion Storage ◽  
Organic Framework

Multishell structured metal selenide nanocubes, namely, Co/(NiCo)Se2 box-in-box structures with different shell compositions, were successfully synthesized by applying zeolitic imidazolate framework-67 (ZIF-67) as a template.

Sign in / Sign up

Export Citation Format

Share Document