Nowadays, the safety concern for lithium batteries is mostly on the usage of flammable electrolytes and the lithium dendrite formation. The emerging solid polymer electrolytes (SPEs) have been extensively applied to construct solid-state lithium batteries, which hold great promise to circumvent these problems due to their merits including intrinsically high safety, good stability, and high capacity of lithium (Li) metal. Single-ion conducting polymer electrolytes (SICPEs) have great advantages over traditional SPEs due to their high lithium transference numbers (LTN) (near to 1). SICPEs improve the overall performance of the battery by suppressing both concentration polarization and impedance. Herein, this review is to offer timely update of the development of SPEs for solid-state lithium battery applications. Generally, the fundamental principles, classification, key parameters, and ion transport mechanisms of SPEs are summarized, followed by a discussion on the modification method. Furthermore, for SICPEs, a special focus is on synthesis and tuning of negative charge dispersion. In addition, artificial intelligence (AI) and machine learning (ML) in material design for SPEs are pointed out. Moreover, we bring up the challenges and offer solutions for further development of SPEs in solid-state lithium batteries.
{"title":"Development of solid polymer electrolytes for solid-state lithium battery applications","authors":"Jieyan Li, Xin Chen, Saz Muhammad, Shubham Roy, Haiyan Huang, Chen Yu, Zia Ullah, Zeru Wang, Yinghe Zhang, Ke Wang, Bing Guo","doi":"10.1016/j.mtener.2024.101574","DOIUrl":"https://doi.org/10.1016/j.mtener.2024.101574","url":null,"abstract":"Nowadays, the safety concern for lithium batteries is mostly on the usage of flammable electrolytes and the lithium dendrite formation. The emerging solid polymer electrolytes (SPEs) have been extensively applied to construct solid-state lithium batteries, which hold great promise to circumvent these problems due to their merits including intrinsically high safety, good stability, and high capacity of lithium (Li) metal. Single-ion conducting polymer electrolytes (SICPEs) have great advantages over traditional SPEs due to their high lithium transference numbers (LTN) (near to 1). SICPEs improve the overall performance of the battery by suppressing both concentration polarization and impedance. Herein, this review is to offer timely update of the development of SPEs for solid-state lithium battery applications. Generally, the fundamental principles, classification, key parameters, and ion transport mechanisms of SPEs are summarized, followed by a discussion on the modification method. Furthermore, for SICPEs, a special focus is on synthesis and tuning of negative charge dispersion. In addition, artificial intelligence (AI) and machine learning (ML) in material design for SPEs are pointed out. Moreover, we bring up the challenges and offer solutions for further development of SPEs in solid-state lithium batteries.","PeriodicalId":18277,"journal":{"name":"Materials Today Energy","volume":"40 1","pages":""},"PeriodicalIF":9.3,"publicationDate":"2024-04-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140837890","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-04-05DOI: 10.1016/j.mtener.2024.101570
Chenghao Qian, Mengna Shi, Changcheng Liu, Que Huang, Yanjun Chen
NaV(PO) (trisodium divanadium (III) tris (orthophosphate [NVP]), the cathode material for sodium ion batteries, faces several challenges, such as lower intrinsic electronic and ionic conductivities, which hinder its commercial viability. In this work, NVP system is modified by introducing sodium carboxymethyl cellulose (Na CMC) to achieve triple modification effects: sodium-rich, cross-linked carbon coating network, and carbon layer surface modification. Meanwhile, CMC, as a porous carbon substrate with large pores, provides a fast migration channel for Na. Similarly, carbon nanotubes (CNTs) grown from the active particles become the connecting carriers between the active particles, thus effectively improving the electron transport. Notably, the scanning electron microscopy (SEM) and transmission electron microscopy (TEM) images after cycling verify the stabilized porous structure of the NaV(PO)/C@0.7wt.%CMC@CNTs (0.7wt.%CMC@CNTs) composite. Distinctively, the modified 0.7wt.%CMC@CNTs reveals a capacity of 111.4 mAh/g at 0.1 C. It submits a high value of 105.0 mAh/g at 1 C with a capacity retention rate of 84.10% after 1,000 cycles. Even at 15 C, it still releases 86.6 mAh/g with a low capacity decay rate of 0.0230% per cycle after 3,600 cycles. Notably, its capacity retention reaches an astonishing 96.09% after 13,000 cycles at an ultra-high rate of 80 C.
{"title":"In-situ construction of porous carbon substrate from sodium carboxymethyl cellulose boosting ultra-long lifespan for Na3V2(PO4)3 cathode material","authors":"Chenghao Qian, Mengna Shi, Changcheng Liu, Que Huang, Yanjun Chen","doi":"10.1016/j.mtener.2024.101570","DOIUrl":"https://doi.org/10.1016/j.mtener.2024.101570","url":null,"abstract":"NaV(PO) (trisodium divanadium (III) tris (orthophosphate [NVP]), the cathode material for sodium ion batteries, faces several challenges, such as lower intrinsic electronic and ionic conductivities, which hinder its commercial viability. In this work, NVP system is modified by introducing sodium carboxymethyl cellulose (Na CMC) to achieve triple modification effects: sodium-rich, cross-linked carbon coating network, and carbon layer surface modification. Meanwhile, CMC, as a porous carbon substrate with large pores, provides a fast migration channel for Na. Similarly, carbon nanotubes (CNTs) grown from the active particles become the connecting carriers between the active particles, thus effectively improving the electron transport. Notably, the scanning electron microscopy (SEM) and transmission electron microscopy (TEM) images after cycling verify the stabilized porous structure of the NaV(PO)/C@0.7wt.%CMC@CNTs (0.7wt.%CMC@CNTs) composite. Distinctively, the modified 0.7wt.%CMC@CNTs reveals a capacity of 111.4 mAh/g at 0.1 C. It submits a high value of 105.0 mAh/g at 1 C with a capacity retention rate of 84.10% after 1,000 cycles. Even at 15 C, it still releases 86.6 mAh/g with a low capacity decay rate of 0.0230% per cycle after 3,600 cycles. Notably, its capacity retention reaches an astonishing 96.09% after 13,000 cycles at an ultra-high rate of 80 C.","PeriodicalId":18277,"journal":{"name":"Materials Today Energy","volume":"62 1","pages":""},"PeriodicalIF":9.3,"publicationDate":"2024-04-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140609085","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-04-01DOI: 10.1016/j.mtener.2024.101565
Ke Wang, Peiyu Wang, Yue Qian, Xiaoyu Wang, Jianmin Luo, Xinyong Tao, Weiyang Li
Sodium metal batteries (SMBs) are an affordable and energy-dense alternative to meet future energy storage requirements. However, the commercialization of sodium metal anodes (SMAs) is facing challenges of unstable solid electrolyte interphase (SEI), uncontrolled dendrite growth, and large volume change during cycles. To overcome these obstacles, a range of strategies has been explored including the design of composite anode, artificial SEI, modification of separator, as well as solid-state electrolyte. Two-dimensional (2D) materials with atomic thickness exhibit large surface area, attractive physicochemical properties, and high mechanical strength, which offers great promise for enabling SMBs with enhanced stability, cycling performance, and safety. In this review, we first summarize the recent development of SMAs that employ 2D nanomaterials engineering. In addition, different mechanisms of 2D nanomaterials in stabilizing SMAs are discussed in detail. Last, we highlighted future opportunities for 2D nanomaterials to enable the next-generation high-performance SMBs.
钠金属电池（SMB）是一种经济实惠的高能量替代品，可满足未来的储能需求。然而，钠金属阳极（SMA）的商业化正面临着固态电解质相间层（SEI）不稳定、树枝状晶粒生长不受控制以及循环过程中体积变化大等挑战。为了克服这些障碍，人们探索了一系列策略，包括设计复合阳极、人工 SEI、改良分离器以及固态电解质。具有原子厚度的二维（2D）材料具有较大的表面积、诱人的物理化学特性和较高的机械强度，这为实现具有更高的稳定性、循环性能和安全性的 SMB 带来了巨大的希望。在本综述中，我们首先总结了采用二维纳米材料工程的 SMA 的最新发展。此外，还详细讨论了二维纳米材料稳定 SMA 的不同机制。最后，我们强调了二维纳米材料在实现下一代高性能 SMB 方面的未来机遇。
{"title":"Enabling high-performance sodium metal anodes by 2D nanomaterials engineering: a review","authors":"Ke Wang, Peiyu Wang, Yue Qian, Xiaoyu Wang, Jianmin Luo, Xinyong Tao, Weiyang Li","doi":"10.1016/j.mtener.2024.101565","DOIUrl":"https://doi.org/10.1016/j.mtener.2024.101565","url":null,"abstract":"Sodium metal batteries (SMBs) are an affordable and energy-dense alternative to meet future energy storage requirements. However, the commercialization of sodium metal anodes (SMAs) is facing challenges of unstable solid electrolyte interphase (SEI), uncontrolled dendrite growth, and large volume change during cycles. To overcome these obstacles, a range of strategies has been explored including the design of composite anode, artificial SEI, modification of separator, as well as solid-state electrolyte. Two-dimensional (2D) materials with atomic thickness exhibit large surface area, attractive physicochemical properties, and high mechanical strength, which offers great promise for enabling SMBs with enhanced stability, cycling performance, and safety. In this review, we first summarize the recent development of SMAs that employ 2D nanomaterials engineering. In addition, different mechanisms of 2D nanomaterials in stabilizing SMAs are discussed in detail. Last, we highlighted future opportunities for 2D nanomaterials to enable the next-generation high-performance SMBs.","PeriodicalId":18277,"journal":{"name":"Materials Today Energy","volume":"63 1","pages":""},"PeriodicalIF":9.3,"publicationDate":"2024-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140591524","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Single-layer TaS and TiS nanosheets were meticulously synthesized through an electrochemical lithium-intercalation-based exfoliation method. Subsequently, ultrasmall Pt nanoparticles, finely sized between 1.2 and 1.6 nm, were expertly deposited onto these monolayer nanosheets via an environmentally friendly photochemical reduction process. The resulted Pt-TaS and Pt-TiS composites exhibit hydrogen evolution reaction (HER) activity comparable with commercial Pt/C. Density functional theory calculations reveal that the introduced Pt (111) plane energetically promotes the adsorption of ∗H with an optimal ΔG value of 0.09 eV. Furthermore, these composite materials demonstrate outstanding cycle stability, far exceeding that of Pt/C. This compelling performance underscores the potential of Pt-TaS and Pt-TiS hybrids as promising alternatives for HER catalysts.
{"title":"Photochemical reduction of ultrasmall Pt nanoparticles on single-layer transition-metal dichalcogenides for hydrogen evolution reactions","authors":"Liang Mei, Yuefeng Zhang, Ting Ying, Weikang Zheng, Honglu Hu, Ruijie Yang, Ruixin Yan, Yue Zhang, Chong Cheng, Bilu Liu, Shuang Li, Zhiyuan Zeng","doi":"10.1016/j.mtener.2023.101487","DOIUrl":"https://doi.org/10.1016/j.mtener.2023.101487","url":null,"abstract":"Single-layer TaS and TiS nanosheets were meticulously synthesized through an electrochemical lithium-intercalation-based exfoliation method. Subsequently, ultrasmall Pt nanoparticles, finely sized between 1.2 and 1.6 nm, were expertly deposited onto these monolayer nanosheets via an environmentally friendly photochemical reduction process. The resulted Pt-TaS and Pt-TiS composites exhibit hydrogen evolution reaction (HER) activity comparable with commercial Pt/C. Density functional theory calculations reveal that the introduced Pt (111) plane energetically promotes the adsorption of ∗H with an optimal ΔG value of 0.09 eV. Furthermore, these composite materials demonstrate outstanding cycle stability, far exceeding that of Pt/C. This compelling performance underscores the potential of Pt-TaS and Pt-TiS hybrids as promising alternatives for HER catalysts.","PeriodicalId":18277,"journal":{"name":"Materials Today Energy","volume":"61 1","pages":""},"PeriodicalIF":9.3,"publicationDate":"2024-03-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140608966","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-03-20DOI: 10.1016/j.mtener.2024.101559
Jiakai Zhou, Xianglin Su, Bike Zhang, Yuheng Zeng, Wei Liu, Jichun Ye, Juan Li, Shengzhi Xu, Qian Huang, Xiaodan Zhang, Ying Zhao, Guofu Hou
The tunnel oxide passivated contact (TOPCon) concept has been the brightest star in the field of emerging passivating contact techniques for the last few years. It has shown great potential in industrial applications due to the overwhelming advantages of high device efficiency and low cost. Here, we introduce a novel crystallization method using ultrafast laser-annealing by scanning a laser spot onto the surface of hydrogenated amorphous silicon film in TOPCon solar cells. By circumventing the high-temperature environment of the conventional annealing process, it can prevent a large number of dopant atoms from penetrating inside the crystalline silicon (c-Si) substrate, reducing the Auger recombination. Moreover, we can conduct extensive experiments to clarify the optimal conditions, including laser-annealing modes and process parameters. The hydrogenation experiments reveal that direct appropriation of the traditional hydrogenation method is not applicable. An additional ‘dehydrogenation’ step proves necessary, indicating that the differences in hydrogen content within the films due to the divergence between the principles of laser-annealing and high-temperature annealing are probably responsible for this. Consequently, the proof-of-concept devices using laser-annealing technology realize a champion efficiency of 19.91%,highlighting an alternative technical route with substantial potential to achieve high-efficiency crystalline silicon solar cells.
{"title":"Ultrafast laser-annealing of hydrogenated amorphous silicon in tunnel oxide passivated contacts for high-efficiency n-type silicon solar cells","authors":"Jiakai Zhou, Xianglin Su, Bike Zhang, Yuheng Zeng, Wei Liu, Jichun Ye, Juan Li, Shengzhi Xu, Qian Huang, Xiaodan Zhang, Ying Zhao, Guofu Hou","doi":"10.1016/j.mtener.2024.101559","DOIUrl":"https://doi.org/10.1016/j.mtener.2024.101559","url":null,"abstract":"The tunnel oxide passivated contact (TOPCon) concept has been the brightest star in the field of emerging passivating contact techniques for the last few years. It has shown great potential in industrial applications due to the overwhelming advantages of high device efficiency and low cost. Here, we introduce a novel crystallization method using ultrafast laser-annealing by scanning a laser spot onto the surface of hydrogenated amorphous silicon film in TOPCon solar cells. By circumventing the high-temperature environment of the conventional annealing process, it can prevent a large number of dopant atoms from penetrating inside the crystalline silicon (c-Si) substrate, reducing the Auger recombination. Moreover, we can conduct extensive experiments to clarify the optimal conditions, including laser-annealing modes and process parameters. The hydrogenation experiments reveal that direct appropriation of the traditional hydrogenation method is not applicable. An additional ‘dehydrogenation’ step proves necessary, indicating that the differences in hydrogen content within the films due to the divergence between the principles of laser-annealing and high-temperature annealing are probably responsible for this. Consequently, the proof-of-concept devices using laser-annealing technology realize a champion efficiency of 19.91%,highlighting an alternative technical route with substantial potential to achieve high-efficiency crystalline silicon solar cells.","PeriodicalId":18277,"journal":{"name":"Materials Today Energy","volume":"13 1","pages":""},"PeriodicalIF":9.3,"publicationDate":"2024-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140591706","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Lithium (Li) metal is considered as the “Holy Grail” among various anodes due to its high theoretical specific capacity and low electrochemical potential. However, the Li anode undergoes uncontrollable dendrite growth and infinite volume expansion during cycling, seriously impeding the commercialization of high-energy-density Li metal batteries (LMBs). Considering the Li deposition is a dynamic electrochemical process, the external filed regulation has become a hotspot strategy to promote the cycling performance and safety application of Li mental anodes (LMA). Herein, we focus on the external fields involved during Li deposition, systematically summarizing the current progress of external field regulation for LMA. The mechanisms and limitations in regulating Li deposition are amply discussed. New perspectives and future research directions are also provided. With various external field being investigated and applied in Li metal anode system, it is expected that the dynamic regulation strategy can deliver great opportunities and promote the practical application of next-generation high-energy-density LMBs and other metal batteries.
{"title":"External Field Regulation of Li Deposition in Lithium Metal Batteries","authors":"Aoxuan Wang, Linxue Zhang, Jinchao Cao, Xinyi He, Xinyue Zhang, Shoubin Zhou, Zhenglin Hu, Xingjiang Liu, Jiayan Luo","doi":"10.1016/j.mtener.2024.101557","DOIUrl":"https://doi.org/10.1016/j.mtener.2024.101557","url":null,"abstract":"Lithium (Li) metal is considered as the “Holy Grail” among various anodes due to its high theoretical specific capacity and low electrochemical potential. However, the Li anode undergoes uncontrollable dendrite growth and infinite volume expansion during cycling, seriously impeding the commercialization of high-energy-density Li metal batteries (LMBs). Considering the Li deposition is a dynamic electrochemical process, the external filed regulation has become a hotspot strategy to promote the cycling performance and safety application of Li mental anodes (LMA). Herein, we focus on the external fields involved during Li deposition, systematically summarizing the current progress of external field regulation for LMA. The mechanisms and limitations in regulating Li deposition are amply discussed. New perspectives and future research directions are also provided. With various external field being investigated and applied in Li metal anode system, it is expected that the dynamic regulation strategy can deliver great opportunities and promote the practical application of next-generation high-energy-density LMBs and other metal batteries.","PeriodicalId":18277,"journal":{"name":"Materials Today Energy","volume":"42 1","pages":""},"PeriodicalIF":9.3,"publicationDate":"2024-03-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140201417","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-03-16DOI: 10.1016/j.mtener.2024.101556
Qi Liu, Ming-Gang Ju, Xiao Cheng Zeng
We present a material design strategy for stacking large-gap unconventional derivatives on the prevailing hybrid organic-inorganic perovskites, (MA, FA)(Sn, Pb)I as a perovskite-to-perovskite tandem cell. To this end, we employ an unconventional structurally well-matched hybrid organic-inorganic perovskite derivative MPSnBr with large-sized weakly hybridized A-site methylphosphonium (MP) cations to construct a heterojunction with its structural analogs (MA, FA)(Sn, Pb)I to simulate the two subcells of the tandem cell. Compared with the popular ammonium-based perovskites, density-functional theory computation suggests that MPSnBr possesses a wider bandgap and lower conduction band minimum (CBM) level induced by the weak-hybrid MP cations, which can be a more suitable wide-range light absorber than its traditional ammonium counterparts. We show that such a heterostructure exhibits a desirable positive ”spike-like” BO, resulting in higher V and more effective suppression of undesirable carrier recombination. Hence, MPSnBr as a structural well-matched absorber, can potentially serve as the wide-range subcell in perovskite tandem cell devices.
我们提出了一种材料设计策略，可将大间隙非常规衍生物堆叠在常用的有机-无机混合包晶石 (MA、FA)(Sn、Pb)I 上，作为包晶石-包晶石串联电池。为此，我们采用了一种非常规的结构匹配良好的混合有机-无机包晶衍生物 MPSnBr，该衍生物具有大尺寸弱杂化 A 位甲基膦（MP）阳离子，可与其结构类似物 (MA、FA)(Sn、Pb)I 构建异质结，以模拟串联电池的两个子电池。与常用的铵基包晶石相比，密度泛函理论计算表明，MPSnBr 在弱杂化 MP 阳离子的诱导下具有更宽的带隙和更低的导带最低电平（CBM），与传统的铵基包晶石相比，MPSnBr 是一种更合适的宽范围光吸收剂。我们的研究表明，这种异质结构具有理想的正 "尖峰状 "BO，从而具有更高的 V 值，并能更有效地抑制不良载流子重组。因此，MPSnBr 作为一种结构匹配良好的吸收体，有可能成为过氧化物串联电池器件中的宽范围子电池。
{"title":"Unconventional Perovskite-to-perovskite Tandem Cell Designed by Stacking with Large-gap Phosphonium-based Analogs","authors":"Qi Liu, Ming-Gang Ju, Xiao Cheng Zeng","doi":"10.1016/j.mtener.2024.101556","DOIUrl":"https://doi.org/10.1016/j.mtener.2024.101556","url":null,"abstract":"We present a material design strategy for stacking large-gap unconventional derivatives on the prevailing hybrid organic-inorganic perovskites, (MA, FA)(Sn, Pb)I as a perovskite-to-perovskite tandem cell. To this end, we employ an unconventional structurally well-matched hybrid organic-inorganic perovskite derivative MPSnBr with large-sized weakly hybridized A-site methylphosphonium (MP) cations to construct a heterojunction with its structural analogs (MA, FA)(Sn, Pb)I to simulate the two subcells of the tandem cell. Compared with the popular ammonium-based perovskites, density-functional theory computation suggests that MPSnBr possesses a wider bandgap and lower conduction band minimum (CBM) level induced by the weak-hybrid MP cations, which can be a more suitable wide-range light absorber than its traditional ammonium counterparts. We show that such a heterostructure exhibits a desirable positive ”spike-like” BO, resulting in higher V and more effective suppression of undesirable carrier recombination. Hence, MPSnBr as a structural well-matched absorber, can potentially serve as the wide-range subcell in perovskite tandem cell devices.","PeriodicalId":18277,"journal":{"name":"Materials Today Energy","volume":"69 1","pages":""},"PeriodicalIF":9.3,"publicationDate":"2024-03-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140201339","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-03-15DOI: 10.1016/j.mtener.2024.101555
Jamal-Deen Musah, Siu Wing Or, Lingyan Kong, Chi-Man Lawrence Wu
The generally lower thermoelectric figure of merit (zT < 0.1) of eco-friendly BiSe semiconductors constrains the waste energy conversion efficiency in the resulting devices compared to relatively toxic BiTe. We strategically introduce an aluminium (Al) dopant to create resonance states near the Fermi level and obtain Al–BiSe nanoparticulate semiconductors with enhanced zT. As an electron feeder, these resonance states significantly improve transport properties within the Al–BiSe semiconductors. The theoretical calculation shows the creation of the resonance states by hybridizing the dopant’s -orbitals with the host’s -orbitals near the Fermi level. The Al–BiSe semiconductors effectively moderate electron concentration and Seebeck-dependent effective mass, resulting in an ultrahigh zT of 0.57 over a broad temperature range of 300–473 K. The nanoparticle size (∼20 nm) efficiently impedes the propagation of lattice vibration, leading to an ultralow total thermal conductivity of 0.399 WmK. In contrast to conventional doping approaches, our strategic resonance doping is pivotal to enhancing the thermoelectric performance of the BiSe semiconductors and providing a pathway for synthesizing other semiconductor materials.
{"title":"Al–doped Bi2Se3 Nanoparticulate Semiconductors with Controlled Resonance States for Enhanced Thermoelectric Efficiency","authors":"Jamal-Deen Musah, Siu Wing Or, Lingyan Kong, Chi-Man Lawrence Wu","doi":"10.1016/j.mtener.2024.101555","DOIUrl":"https://doi.org/10.1016/j.mtener.2024.101555","url":null,"abstract":"The generally lower thermoelectric figure of merit (zT < 0.1) of eco-friendly BiSe semiconductors constrains the waste energy conversion efficiency in the resulting devices compared to relatively toxic BiTe. We strategically introduce an aluminium (Al) dopant to create resonance states near the Fermi level and obtain Al–BiSe nanoparticulate semiconductors with enhanced zT. As an electron feeder, these resonance states significantly improve transport properties within the Al–BiSe semiconductors. The theoretical calculation shows the creation of the resonance states by hybridizing the dopant’s -orbitals with the host’s -orbitals near the Fermi level. The Al–BiSe semiconductors effectively moderate electron concentration and Seebeck-dependent effective mass, resulting in an ultrahigh zT of 0.57 over a broad temperature range of 300–473 K. The nanoparticle size (∼20 nm) efficiently impedes the propagation of lattice vibration, leading to an ultralow total thermal conductivity of 0.399 WmK. In contrast to conventional doping approaches, our strategic resonance doping is pivotal to enhancing the thermoelectric performance of the BiSe semiconductors and providing a pathway for synthesizing other semiconductor materials.","PeriodicalId":18277,"journal":{"name":"Materials Today Energy","volume":"8 1","pages":""},"PeriodicalIF":9.3,"publicationDate":"2024-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140201304","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-03-12DOI: 10.1016/j.mtener.2024.101554
Yaqi Hong, Song Zhang, Hu Shen, Xingyuan Tian, Bin Zhang, Xin Zhou, Rong Liu, Ying Liu, Yicong Gao, Ruirui Cao, Huilin Li, Fumin Li, Zhitao Shen, Chong Chen
Perovskite solar cells (PSCs) have demonstrated extensive prospects for future applications. However, defects remain as the crucial factor that impedes their further advancement in performance, and passivation of the interfaces (such as the buried and/or top interfaces) is regarded as one of the most effective approaches. Herein, we aim to address another important interface, namely, the indium tin oxide/electron transport layer (ITO/ETL) interface in n-i-p structured devices. Since electron transport layers are typically fabricated using commercial nano tin dioxide, which often display insufficient density. To combat this, we employ the most commonly used bathocuproine (BCP) material to treat the ITO/ETL interface. The incorporation of BCP diminishes the direct contact between the perovskite and ITO layers, while also passivating buried interface and adjusting the crystal orientation of perovskites. Furthermore, the substrate layer exhibits improved transparency, consequently elevating the utilization rate of light by perovskite. As a result, the BCP-based PSC exhibits an impressive efficiency greater than 22%, surpassing the control one of 19.91%, and which simultaneously demonstrates excellent stability. Notably, the optimization of this interface has universal applicability in the improvement of PSCs performance.
{"title":"Bathocuproine, an Old Dog New Tricks for Boosting the Performance of Perovskite Solar Cells","authors":"Yaqi Hong, Song Zhang, Hu Shen, Xingyuan Tian, Bin Zhang, Xin Zhou, Rong Liu, Ying Liu, Yicong Gao, Ruirui Cao, Huilin Li, Fumin Li, Zhitao Shen, Chong Chen","doi":"10.1016/j.mtener.2024.101554","DOIUrl":"https://doi.org/10.1016/j.mtener.2024.101554","url":null,"abstract":"Perovskite solar cells (PSCs) have demonstrated extensive prospects for future applications. However, defects remain as the crucial factor that impedes their further advancement in performance, and passivation of the interfaces (such as the buried and/or top interfaces) is regarded as one of the most effective approaches. Herein, we aim to address another important interface, namely, the indium tin oxide/electron transport layer (ITO/ETL) interface in n-i-p structured devices. Since electron transport layers are typically fabricated using commercial nano tin dioxide, which often display insufficient density. To combat this, we employ the most commonly used bathocuproine (BCP) material to treat the ITO/ETL interface. The incorporation of BCP diminishes the direct contact between the perovskite and ITO layers, while also passivating buried interface and adjusting the crystal orientation of perovskites. Furthermore, the substrate layer exhibits improved transparency, consequently elevating the utilization rate of light by perovskite. As a result, the BCP-based PSC exhibits an impressive efficiency greater than 22%, surpassing the control one of 19.91%, and which simultaneously demonstrates excellent stability. Notably, the optimization of this interface has universal applicability in the improvement of PSCs performance.","PeriodicalId":18277,"journal":{"name":"Materials Today Energy","volume":"136 1","pages":""},"PeriodicalIF":9.3,"publicationDate":"2024-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140127743","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-03-11DOI: 10.1016/j.mtener.2024.101553
Jiangheng Jia, Zhizhan Dai, Song Ding, Yiwei Wang, Shengchun Shen, Ying Hou, Yuewei Yin, Xiaoguang Li
Low energy density of polymer film capacitors is regarded as one of the most serious drawbacks facing growing demands for equipment integration and miniaturization. Herein, ultraviolet light and ozone (UVO) surface modification is utilized to simultaneously improve dielectric constant and breakdown strength of polyethylene (PE) films. As a result, after 3 minutes of UVO treatment, an enhanced recoverable energy density of 4.79 J/cm with a charge-discharge efficiency of >95% is obtained under 650 MV/m at room temperature (RT). Significantly, stable energy storage performance under 200 MV/m maintains throughout a broad temperature range from -90°C to 90°C and during 20000 cycles of charge-discharge procedures. According to first-principles calculations and thermally stimulated depolarization current measurements, formation of carbonyl groups (C=O) after UVO treatment could effectively passivate initial deep-level defect states caused by H vacancies, which explains the improvement in capacitive energy storage. Moreover, the metalized UVO-modified PE exhibits valuable breakdown self-clearing ability, and the self-cleared specimen maintains stable energy storage performance over 20000 cycles at 200 MV/m and RT. This work offers an effective and user-friendly method for enhancing comprehensive dielectric characteristics of PE-based materials, potential for applications in modern power systems and electronic devices.
{"title":"Enhancing energy storage performance of polyethylene via passivation with oxygen atoms through C-H vacancy carbonylation","authors":"Jiangheng Jia, Zhizhan Dai, Song Ding, Yiwei Wang, Shengchun Shen, Ying Hou, Yuewei Yin, Xiaoguang Li","doi":"10.1016/j.mtener.2024.101553","DOIUrl":"https://doi.org/10.1016/j.mtener.2024.101553","url":null,"abstract":"Low energy density of polymer film capacitors is regarded as one of the most serious drawbacks facing growing demands for equipment integration and miniaturization. Herein, ultraviolet light and ozone (UVO) surface modification is utilized to simultaneously improve dielectric constant and breakdown strength of polyethylene (PE) films. As a result, after 3 minutes of UVO treatment, an enhanced recoverable energy density of 4.79 J/cm with a charge-discharge efficiency of >95% is obtained under 650 MV/m at room temperature (RT). Significantly, stable energy storage performance under 200 MV/m maintains throughout a broad temperature range from -90°C to 90°C and during 20000 cycles of charge-discharge procedures. According to first-principles calculations and thermally stimulated depolarization current measurements, formation of carbonyl groups (C=O) after UVO treatment could effectively passivate initial deep-level defect states caused by H vacancies, which explains the improvement in capacitive energy storage. Moreover, the metalized UVO-modified PE exhibits valuable breakdown self-clearing ability, and the self-cleared specimen maintains stable energy storage performance over 20000 cycles at 200 MV/m and RT. This work offers an effective and user-friendly method for enhancing comprehensive dielectric characteristics of PE-based materials, potential for applications in modern power systems and electronic devices.","PeriodicalId":18277,"journal":{"name":"Materials Today Energy","volume":"35 1","pages":""},"PeriodicalIF":9.3,"publicationDate":"2024-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140128109","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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