A novel 2D sulfide gallium heterojunction as a high-performance electrocatalyst for overall water splitting

Yang, Zhou; Xiang, Meng; Niu, Hongwei; Xie, Xinjie; Yu, Chengbin; Jia, Hui; Dong, Shuang

doi:10.1016/j.jssc.2022.123365

Cited by 11 publications

(6 citation statements)

References 32 publications

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“…Thus, PDMS-embedded modified graphene aerogel is subsequently utilized to reduce the volume shrinkage effectively during the infiltrating process [ 23 , 24 ]. On the other hand, thermal energy storage (TES) and thermoelectric energy harvesting can resolve the energy crisis and environmental pollution [ 25 , 26 ]. Phase change material (PCM) is the most popular for thermal energy applications because of absorbing or releasing a large amount of heat during the phase transition process [ 27 , 28 ].…”

Section: Introductionmentioning

confidence: 99%

Characterization of Phase Change Materials Fabricated with Cross-Linked Graphene Aerogels

Song

2022

Gels

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3D porous graphene aerogel exhibits a high surface area which can hold plenty of pure phase change material (PCM) into the internal space. In order to maintain the flexibility of PCM without volume shrinkage under the external force, cross-linked graphene aerogel was prepared by the cysteamine vapor method. The cross-linked graphene aerogel had a high stress–strain durability and chemical stability for infiltrating PCM to produce a form-stable PCM composite. The latent heat of PCM is one of the elements to estimate the capacity of PCM thermal energy storage (TES) during the phase transition process. The cross-linked graphene aerogel-supported PCM composite showed a great TES to be utilized in thermal-to-electrical energy harvesting. The cross-linked graphene aerogel also had an excellent mechanical property of preventing damage at a high temperature.

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Section: Introductionmentioning

confidence: 99%

Characterization of Phase Change Materials Fabricated with Cross-Linked Graphene Aerogels

Song

2022

Gels

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“…3e, the peaks at 161.3 eV and 162.4 eV are ascribed to S 2p 3/2 and S 2p 1/2 in the CoS 1.097 , but the relative ratio between S 2p 3/2 and S 2p 1/2 has changed in the 0.5SnO 2 /0.5CoS 1.097 . 29 The different XPS results between 0.5SnO 2 /0.5CoS 1.097 and intrinsic CoS 1.097 strongly demonstrate the electron fluxion circumstance and formation of a heterojunction. 30 To analyze the effect of the heterojunction on H 2 reduction, the H 2 -TPR (hydrogen temperature-programmed reduction) was characterized in Fig.…”

Section: Resultsmentioning

confidence: 96%

SnO₂/CoS_1.097 heterojunction as a green electrocatalyst for hydrogen evolution linking to assistant glycerol oxidation

Xie,

Zhang,

Xiang

et al. 2023

Green Chem.

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“…[ 30 ] The Raman spectra of La/La 2 O 2 S and La/La 2 O 2 S 1− x below 500 cm −1 are analyzed in Figure S5, Supporting Information, and there are six characteristic peaks at 92.8, 190.4, 273.3, 336.7, 397.2, and 457.3 cm −1 in La/La 2 O 2 S, which all shift to lower wavenumbers in La/La 2 O 2 S 1− x , demonstrating the existence of S vacancy in La/La 2 O 2 S 1− x . [ 31 ] The ionization energy was tested by ultraviolet photoelectron spectrometer (UPS), and the work functions were calculated to be 4.64 eV for La/La 2 O 2 S and 3.57 eV for La/La 2 O 2 S 1− x , respectively, as shown in Figure 2e. The lower work function in La/La 2 O 2 S 1− x suggests that the electrons can more easily escape from the surface of La/La 2 O 2 S 1− x .…”

Section: Resultsmentioning

confidence: 99%

Rare‐Earth Lanthanum Tailoring Mott–Schottky Heterojunction by Sulfur Vacancy Modification as a Bifunctional Electrocatalyst for Zinc–Air Battery

Yang

et al. 2022

Small Structures

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Zinc–air battery (ZAB) has considerable potential to be applied in the energy storage field. The main commercial electrocatalysts are Pt/C and RuO2, which are expensive and cannot possess good bifunctional electrocatalytic activities including oxygen reduction reaction and oxygen evolution reaction. Herein, the rare‐earth metal lanthanum is first constructed to be a Mott–Schottky heterojunction, and the S vacancy is introduced into the Mott–Schottky heterojunction. The so‐obtained La/La2O2S1−x shows excellent bifunctional electrocatalytic activity with ΔE of 0.68 V, which is superior to La/La2O2S without S vacancies and the commercial Pt/C + RuO2 system. In addition, the La/La2O2S1−x is assembled into ZABs, showing a high open power density of 212 mW cm−2, and a large specific capacity of 707 mAh g−1, as good cycle stability. The density functional theory calculations reveal the tailoring effect of S vacancy on the Schottky barrier to control the electron transfer concentration and ameliorate over‐strong adsorption, which blocks the reflux of electrons and promotes the unidirectional flow of electrons. In addition, the S vacancy modulates the electron cloud of La‐4f orbit and makes the electrocatalytic pathway closer to the ideal pathway.

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A novel 2D sulfide gallium heterojunction as a high-performance electrocatalyst for overall water splitting

Cited by 11 publications

References 32 publications

Characterization of Phase Change Materials Fabricated with Cross-Linked Graphene Aerogels

Characterization of Phase Change Materials Fabricated with Cross-Linked Graphene Aerogels

SnO₂/CoS_1.097 heterojunction as a green electrocatalyst for hydrogen evolution linking to assistant glycerol oxidation

Rare‐Earth Lanthanum Tailoring Mott–Schottky Heterojunction by Sulfur Vacancy Modification as a Bifunctional Electrocatalyst for Zinc–Air Battery

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A novel 2D sulfide gallium heterojunction as a high-performance electrocatalyst for overall water splitting

Cited by 11 publications

References 32 publications

Characterization of Phase Change Materials Fabricated with Cross-Linked Graphene Aerogels

Characterization of Phase Change Materials Fabricated with Cross-Linked Graphene Aerogels

SnO2/CoS1.097 heterojunction as a green electrocatalyst for hydrogen evolution linking to assistant glycerol oxidation

Rare‐Earth Lanthanum Tailoring Mott–Schottky Heterojunction by Sulfur Vacancy Modification as a Bifunctional Electrocatalyst for Zinc–Air Battery

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SnO₂/CoS_1.097 heterojunction as a green electrocatalyst for hydrogen evolution linking to assistant glycerol oxidation