Multi-shell tin phosphide nanospheres as high performance anode material for a sodium ion battery

Porous carbons with a high specific surface area (2314–3470 m2 g−1) are prepared via a novel KCl-assisted activation strategy for high-performance supercapacitor.

Download Full-text

High specific surface area NiTiAl layered double hydroxide derived via alkali etching for high performance supercapacitor electrode

Journal of Alloys and Compounds ◽

10.1016/j.jallcom.2021.161502 ◽

2021 ◽

pp. 161502

Author(s):

Xiaoliang Wang ◽

Fenqi Wu ◽

Jingxin Fan ◽

Aonan Tian ◽

Yan Cheng ◽

...

Keyword(s):

Specific Surface ◽

Surface Area ◽

Layered Double Hydroxide ◽

Specific Surface Area ◽

High Performance ◽

High Specific Surface Area ◽

Supercapacitor Electrode ◽

Double Hydroxide

Download Full-text

Time-Resolved X-ray Operando Observations of Lithiation Gradients across the Cathode Matrix and Individual Oxide Particles during Fast Cycling of a Li-Ion Cell

Journal of The Electrochemical Society ◽

10.1149/1945-7111/ac393f ◽

2021 ◽

Author(s):

Tianlong Zheng ◽

Jing He ◽

Pingwei Cai ◽

Xi Liu ◽

Duojie Wu ◽

...

Keyword(s):

Electronic Structure ◽

Specific Surface ◽

Surface Area ◽

Specific Surface Area ◽

High Performance ◽

Density Functional ◽

Density Functional Theory Calculations ◽

Carbon Paper ◽

Free Energy Barrier ◽

Active Components

Abstract Self-supporting three-dimensional (3D) transition metal electrodes have been considered for designing high-performance non-noble metal oxygen evolution reaction (OER) catalysts owing to their advantages such as binder-free, good mass transfer, and large specific surface area. However, the poor conductivity of ((oxy)hydr)oxides and the difficulty in adjusting their electronic structure limit their application. As an alternative strategy, instead of constituting the array electrode by the active components themselves, we herein report 3D Co(OH)2@MnO2 heterostructure decorated carbon nanoarrays grown directly on carbon paper (Co(OH)2@MnO2-CNAs). This unique structure can not only enhance electrical conductivity but also provide a larger specific surface area, and facilitate electrolyte diffusion and ion transport. The core-shell heterostructured Co(OH)2@MnO2 formed via incorporation with MnO2 facilitates the transition of CoII to CoIII in Co(OH)2 and it increases the storage of oxidative charge in the catalyst, leading to an OER activity with benchmark RuO2 and good stability. Density functional theory calculations suggest that the improved OER performance can be attributed to the formation of the heterojunction structure, resulting in the modulation of the electronic structure of Co atoms and the reduction of the free energy barrier of the rate-determining step for the OER.

Download Full-text

Biomass-derived mesopore-dominant porous carbons with large specific surface area and high defect density as high performance electrode materials for Li-ion batteries and supercapacitors

Nano Energy ◽

10.1016/j.nanoen.2017.04.042 ◽

2017 ◽

Vol 36 ◽

pp. 322-330 ◽

Cited By ~ 209

Author(s):

Jin Niu ◽

Rong Shao ◽

Jingjing Liang ◽

Meiling Dou ◽

Zhilin Li ◽

...

Keyword(s):

Specific Surface ◽

Surface Area ◽

Specific Surface Area ◽

High Performance ◽

Electrode Materials ◽

Defect Density ◽

Large Specific Surface Area ◽

Li Ion Batteries ◽

High Defect Density ◽

Li Ion

Download Full-text

In-situ controlled synthesis of NiFe MOF materials with excellent electrocatalytic performances for water splitting

Functional Materials Letters ◽

10.1142/s1793604721510115 ◽

2021 ◽

Vol 14 (02) ◽

pp. 2151011

Author(s):

Jingwen Jia ◽

Longfu Wei ◽

Ziting Guo ◽

Fang Li ◽

Changlin Yu ◽

...

Keyword(s):

Specific Surface ◽

Surface Area ◽

Water Splitting ◽

Specific Surface Area ◽

High Performance ◽

Alkaline Condition ◽

High Porosity ◽

Large Specific Surface Area ◽

Electrocatalytic Performance

Metal–organic frameworks (MOFs) are the electrocatalytic materials with large specific surface area, high porosity, controllable structure and monodisperse active center, which is a promising candidate for the application of electrochemical energy conversion. However, the electrocatalytic performance of pure MOFs is seriously limited its poor conductivity and stability. In this work, high-performance electrocatalyst was fabricated through combining NiFe/MOF on nickel foam (NF) via in-situ growth strategy. Through rational control of the time and ratio in reaction precursors, we realized the effective manipulation of the growth behavior, and further investigated the electrocatalytic performance in water splitting. The catalyst presented excellent electrocatalytic performance for water splitting, with low overpotential of 260 mV in alkaline condition at a current density of 50 mA[Formula: see text], which is benefited from the large specific surface area and active sites. This study demonstrates that the rational design of NiFe MOF/NF plays a significant role in high-performance electrocatalyst.

Download Full-text