Silica depleted rice hull ash (SDRHA), an agricultural waste, as a high-performance hybrid lithium-ion capacitor

2020 ◽  
Vol 22 (14) ◽  
pp. 4656-4668
Author(s):  
Eleni Temeche ◽  
Mengjie Yu ◽  
Richard M. Laine

The partial removal of SiO2 from rice hull ash (RHA, an agricultural waste) is a simple, low cost, eco-friendly method of producing high-performance electrode material for hybrid-lithium ion capacitors.

2016 ◽  
Vol 864 ◽  
pp. 112-116
Author(s):  
Rinlee Butch M. Cervera ◽  
Emie A. Salamangkit-Mirasol

Rice hull or rice husk (RH) is an agricultural waste obtained from milling rice grains. Since RH has no commercial value and is difficult to use in agriculture, its volume is often reduced through open field burning which is an environmental hazard. In this study, amorphous nanosilica from Philippine waste RH was prepared via acid precipitation method. The synthesized samples were fully characterized for its microstructural properties. X-ray diffraction pattern reveals that the structure of the prepared sample is amorphous in nature while Fourier transform infrared spectrum showed the different vibration bands of the synthesized sample. Scanning electron microscopy (SEM) and particle size analysis (PSA) confirmed the presence of agglomerated silica particles. On the other hand, transmission electron microscopy (TEM) revealed an amorphous sample with grain sizes of about 5 to 20 nanometer range and has about 95 % purity according to EDS analyses. The elemental mapping also suggests that leaching of rice hull ash effectively removed the metallic impurity such as potassium element in the material. Hence, amorphous nanosilica was successfully prepared via a low-cost acid precipitation method from Philippine waste rice hull.


Author(s):  
Thomas F Fässler ◽  
Stefan Strangmüller ◽  
Henrik Eickkhoff ◽  
Wilhelm Klein ◽  
Gabriele Raudaschl-Sieber ◽  
...  

The increasing demand for a high-performance and low-cost battery technology promotes the search for Li+-conducting materials. Recently, phosphidotetrelates and aluminates were introduced as an innovative class of phosphide-based Li+-conducting materials...


Author(s):  
Lei Zhang ◽  
Yuhai Dou ◽  
Mohammad Al-Mamun ◽  
Guowen Meng

The symmetric battery composed of single electrode material as both anode and cathode is a model battery configuration owing to its distinctive advantages over the existing asymmetric ones in terms...


2021 ◽  
pp. 2100029
Author(s):  
Hui Sun ◽  
Fei Niu ◽  
Peng Yuan ◽  
Xuexia He ◽  
Jie Sun ◽  
...  

RSC Advances ◽  
2021 ◽  
Vol 11 (17) ◽  
pp. 10018-10026
Author(s):  
Chang Liu ◽  
Zeyin He ◽  
Jianmin Niu ◽  
Qiang Cheng ◽  
Zongchen Zhao ◽  
...  

In this work, we have fabricated lithium-ion capacitor using SnO2/PCN as anode and waste coffee grounds derived PCN as cathode, which delivers good combination of high energy and power characteristics.


RSC Advances ◽  
2017 ◽  
Vol 7 (60) ◽  
pp. 37923-37928 ◽  
Author(s):  
Bing Li ◽  
Hongyou Zhang ◽  
Dabin Wang ◽  
Hong Lv ◽  
Cunman Zhang

The optimized AC//LTO LIC is worth noting that our device outperformed most of the similar constructions concerning carbonaceous materials as cathode and LTO as anode and some other constructions.


RSC Advances ◽  
2019 ◽  
Vol 9 (50) ◽  
pp. 29190-29194 ◽  
Author(s):  
Bing Li ◽  
Hongyou Zhang ◽  
Cunman Zhang

Agricultural waste, corncob-derived activated carbon (AC) is prepared by pre-carbonization of the precursors and activation of KOH of the pyrolysis products.


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