Pseudo-capacitive and kinetic enhancement of metal oxides and pillared graphite composite for stabilizing battery anodes

Abstract

Nanostructured TiO2 and SnO2 possess reciprocal energy storage properties, but challenges remain in fully exploiting their complementary merits. Here, this study reports a strategy of chemically suturing metal oxides in a cushioning graphite network (SnO2[O]rTiO2-PGN) in order to construct an advanced and reliable energy storage material with a unique configuration for energy storage processes. The suggested SnO2[O]rTiO2-PGN configuration provides sturdy interconnections between phases and chemically wraps the SnO2 nanoparticles around disordered TiO2 (SnO2[O]rTiO2) into a cushioning plier-linked graphite network (PGN) system with nanometer interlayer distance (~ 1.2 nm). Subsequently, the SnO2[O]rTiO2-PGN reveals superior lithium-ion storage performance compared to all 16 of the control group samples and commercial graphite anode (keeps around 600 mAh g−1 at 100 mA g−1 after 250 cycles). This work clarifies the enhanced pseudo-capacitive contribution and the major diffusion-controlled energy storage kinetics. The validity of preventing volume expansion is demonstrated through the visualized image evidence of electrode integrity.

Graphene Loaded ZrO2 Nanocomposite for Antioxidant, Dye Removal, Electrochemical and Green Sensor Studies

“…Furthermore, to explore the mineralization efficiency of the RB dye over rGO, ZrO 2 , and ZrO 2 /rGO during the photocatalytic reaction, measurements, and analysis of the total organic carbon (TOC) values were carried out. As illustrated in Figure 9(h), a decrease in TOC values of 22.89 %, 49.71 %, and 91.56 % was observed when employing rGO, ZrO 2 , and ZrO 2 /rGO, respectively [61] . Clearly, among these samples, ZrO 2 /rGO demonstrated the highest efficiency in mineralizing RB during the degradation process.…”

“…As illustrated in Figure 9(h), a decrease in TOC values of 22.89 %, 49.71 %, and 91.56 % was observed when employing rGO, ZrO 2 , and ZrO 2 /rGO, respectively. [61] Clearly, among these samples, ZrO 2 /rGO demonstrated the highest efficiency in mineralizing RB during the degradation process. The investigation aimed to speculate on the photocatalytic decomposition mechanism of contaminants over the ZrO 2 /rGO composite.…”

Synthesis and Electrochemical Properties of Octahedral Sb2O3-rGO as Anode Materials for Lithium-Ion Batteries

“…These results showed that the lithiation processes of the Sb 2 O 3 -rGO anode were dominated by capacitive-controlled reactions. The high-rate performance and cyclic stability of the Sb 2 O 3 -rGO can be attributed to the surface charge storage. , The GITT was conducted to analyze the lithium diffusion coefficient and phase transition of Sb 2 O 3 -rGO. For the measurement of GITT, a process applying a short constant current followed by a relaxation process was conducted.…”

Development of SiO2/rGO from Rice Husk for Photocatalysis, Antioxidant, Electrochemical and Green Sensor Detection Studies

“…Moreover, the surface concentration of the electrodes (rGO, SiO2, and SiO2/rGO) was investigated using the Brown-Anson eq. ( 16) [105][106].…”