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Layered double hydroxides‐based Z‐scheme heterojunction for photocatalysis 基于层状双氢氧化物的光催化 Z 型异质结

EcoEnergy Pub Date : 2024-02-14 DOI: 10.1002/ece2.25

Guixiang Ding, Zhaoqiang Wang, Juntao Zhang, Peng Wang, Lihui Chen, Guangfu Liao

{"title":"Layered double hydroxides‐based Z‐scheme heterojunction for photocatalysis","authors":"Guixiang Ding, Zhaoqiang Wang, Juntao Zhang, Peng Wang, Lihui Chen, Guangfu Liao","doi":"10.1002/ece2.25","DOIUrl":"https://doi.org/10.1002/ece2.25","url":null,"abstract":"Layered double hydroxides (LDHs)‐based photocatalysts have generated widespread interest owing to their great potential for solving both energy and environmental issues through directly converting nonconsumable solar energy. Numerous methods have been investigated and analyzed in recent years to promote the photocatalytic efficiency of LDHs. Z‐scheme heterojunction that mimics the artificial photosynthesis is employed in photocatalysis owing to the outstanding advantages, such as high quantum efficiency, separation of redox sites, and low recombination of photocarriers. Herein, various LDHs‐based Z‐scheme heterojunction photocatalysts are briefly reviewed. Z‐scheme heterojunction associated with LDHs‐based materials exhibit high photocatalysis performance, and these types of hybrids are applied in photocatalytic H2O splitting, CO2 reduction, and pollution degradation, which are introduced and summarized in detail. In the end, a brief conclusion focused on future challenges and expectations of LDH‐based Z‐scheme photocatalytic system is presented. We expect that more advances for LDH‐based Z‐scheme photocatalyst can be achieved in the field of photocatalysis in the coming days.","PeriodicalId":511490,"journal":{"name":"EcoEnergy","volume":"227 ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139836659","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Synthesis conditions affecting electrochemical and chemical stabilities of Ga‐doped Li7La3Zr2O12 solid electrolyte 影响掺杂 Ga 的 Li7La3Zr2O12 固体电解质的电化学和化学稳定性的合成条件

EcoEnergy Pub Date : 2024-02-14 DOI: 10.1002/ece2.24

DingYuan Huang, Masao Kamiko, Shunsuke Yagi

{"title":"Synthesis conditions affecting electrochemical and chemical stabilities of Ga‐doped Li7La3Zr2O12 solid electrolyte","authors":"DingYuan Huang, Masao Kamiko, Shunsuke Yagi","doi":"10.1002/ece2.24","DOIUrl":"https://doi.org/10.1002/ece2.24","url":null,"abstract":"All‐solid‐state lithium batteries with Li metal anodes and solid‐state electrolytes (SSEs) can achieve higher energy density and enhanced safety compared to the current liquid‐based Li‐ion batteries. Among several SSEs, Li7La3Zr2O12 (LLZO) has attracted attention due to its high Li+ ion conductivity (∼10−3 S cm−1 at room temperature for Ga‐doped LLZO) and good stability in ambient air. However, the challenges of Li penetration and the chemical instability against Li are the primary obstacles to its practical application. This study investigates the effects of the grain size and electronic conductivity of Ga‐doped LLZO on the critical current density (CCD). Using samples with similar interfacial impedances between Ga‐doped LLZO and Li, we demonstrate that a decrease in the grain size of Ga‐doped LLZO lowers the electronic conductivity, leading to a higher CCD. Furthermore, although a previous study suggests that Ga‐doped LLZO might be unsuitable for direct contact with Li, the chemical stability against Li is enhanced in a more compact pellet prepared at a higher cold‐pressing pressure. These results underscore the significance of the sintering conditions and pellet pressing pressure in the synthesis of Ga‐doped LLZO since they ultimately affect the electrochemical and chemical stabilities of the Ga‐doped LLZO solid electrolyte with a Li‐metal anode.","PeriodicalId":511490,"journal":{"name":"EcoEnergy","volume":"75 2","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139837800","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0