NiSe2 pyramids deposited on N-doped graphene encapsulated Ni foam for high-performance water oxidation

2017 ◽  
Vol 5 (8) ◽  
pp. 3981-3986 ◽  
Author(s):  
Jing Yu ◽  
Qianqian Li ◽  
Cheng-Yan Xu ◽  
Na Chen ◽  
Yuan Li ◽  
...  

Highly efficient water oxidation electrocatalysts made of low-cost and earth-abundant elements have been developed and demonstrated.


Nanoscale ◽  
2014 ◽  
Vol 6 (24) ◽  
pp. 15066-15072 ◽  
Author(s):  
Yuanyuan Jiang ◽  
Yizhong Lu ◽  
Xiaodan Wang ◽  
Yu Bao ◽  
Wei Chen ◽  
...  

Effective preparation of a high-performance non-precious metal oxygen reduction electrocatalyst (a Co–N complex on 3D N-doped graphene) by a facile method from low-cost raw materials.



Author(s):  
Shuya Zhao ◽  
Yurui Xue ◽  
Zhongqiang Wang ◽  
Zhiqiang Zheng ◽  
Xiaoyu Luan ◽  
...  

Developing highly active, stable and low-cost electrocatalysts capable of an efficient oxygen evolution reaction (OER) is urgent and challenging.





2019 ◽  
Vol 7 (5) ◽  
pp. 5430-5439 ◽  
Author(s):  
Mengqi Yao ◽  
Baolong Sun ◽  
Lixiang He ◽  
Ni Wang ◽  
Wencheng Hu ◽  
...  


Science ◽  
2019 ◽  
Vol 365 (6460) ◽  
pp. 1418-1424 ◽  
Author(s):  
Wenke He ◽  
Dongyang Wang ◽  
Haijun Wu ◽  
Yu Xiao ◽  
Yang Zhang ◽  
...  

Thermoelectric technology allows conversion between heat and electricity. Many good thermoelectric materials contain rare or toxic elements, so developing low-cost and high-performance thermoelectric materials is warranted. Here, we report the temperature-dependent interplay of three separate electronic bands in hole-doped tin sulfide (SnS) crystals. This behavior leads to synergistic optimization between effective mass (m*) and carrier mobility (μ) and can be boosted through introducing selenium (Se). This enhanced the power factor from ~30 to ~53 microwatts per centimeter per square kelvin (μW cm−1 K−2 at 300 K), while lowering the thermal conductivity after Se alloying. As a result, we obtained a maximum figure of merit ZT (ZTmax) of ~1.6 at 873 K and an average ZT (ZTave) of ~1.25 at 300 to 873 K in SnS0.91Se0.09 crystals. Our strategy for band manipulation offers a different route for optimizing thermoelectric performance. The high-performance SnS crystals represent an important step toward low-cost, Earth-abundant, and environmentally friendly thermoelectrics.



2017 ◽  
Vol 74 ◽  
pp. 42-47 ◽  
Author(s):  
Xiaojuan Chen ◽  
Guangfeng Zeng ◽  
Taotao Gao ◽  
Zhaoyu Jin ◽  
Yajie Zhang ◽  
...  


2017 ◽  
Vol 5 (17) ◽  
pp. 7999-8009 ◽  
Author(s):  
Yao Lu ◽  
Hailei Zhao ◽  
Kui Li ◽  
Xuefei Du ◽  
Yanhui Ma ◽  
...  

A highly efficient and cost-effective strategy for doping Ca at the B-site of BaFeO3−δ was demonstrated to enhance oxygen permeability.



RSC Advances ◽  
2017 ◽  
Vol 7 (25) ◽  
pp. 15053-15059 ◽  
Author(s):  
Feng Lin ◽  
Zhiyu Shao ◽  
Ping Li ◽  
Zhenpan Chen ◽  
Xinyi Liu ◽  
...  

Co-loading earth-abundant Ni and CuO cocatalysts on BiVO4 can significantly enhance the thiophene and dyes oxidation under visible light irradiation.



2016 ◽  
Vol 4 (33) ◽  
pp. 12865-12877 ◽  
Author(s):  
Yuting Gao ◽  
Xing Li ◽  
Yue Hu ◽  
Yeli Fan ◽  
Jianyong Yuan ◽  
...  

As one of the promising photovoltaic technologies, high performance metal-free dye-sensitized solar cells (DSSCs) have been explored due to the fact that they can be potentially produced using low-cost materials, their color can be tuned and they exhibit reasonable stability.



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