Lithium batteries are emerging as key contenders for next-generation energy storage due to their high energy density, and promising advances in consumer electronics and electric vehicles. A critical component in lithium batteries is the separator, which not only facilitates ion transport between electrodes but also prevents dendrite formation that can lead to short-circuits which is a major barrier to widespread adoption. This review examines the evolution and current state of separators for lithium-ion and lithium-metal batteries, emphasizing their role in enhancing performance and safety. It addresses the failure mechanisms that can undermine separator effectiveness and highlights the importance of developing advanced materials to overcome these challenges. Future advancements in lithium battery technology are closely tied to innovations in separator design. By exploring recent advancements and emerging trends, this review aims to outline potential development paths for improving separator materials. It seeks to address key issues and propose novel approaches, ultimately contributing to the development of safer, more efficient, and commercially viable lithium metal batteries.
{"title":"Evolution from passive to active components in lithium metal and lithium-ion batteries separators","authors":"Tong Liang, Dahang Cheng, Junhao Chen, Xianqi Wu, Hui Xiong, Sutong Yu, Zhennan Zhang, Haiyang Liu, Shurui Liu, Xiaohui Song","doi":"10.1016/j.mtener.2024.101684","DOIUrl":"https://doi.org/10.1016/j.mtener.2024.101684","url":null,"abstract":"Lithium batteries are emerging as key contenders for next-generation energy storage due to their high energy density, and promising advances in consumer electronics and electric vehicles. A critical component in lithium batteries is the separator, which not only facilitates ion transport between electrodes but also prevents dendrite formation that can lead to short-circuits which is a major barrier to widespread adoption. This review examines the evolution and current state of separators for lithium-ion and lithium-metal batteries, emphasizing their role in enhancing performance and safety. It addresses the failure mechanisms that can undermine separator effectiveness and highlights the importance of developing advanced materials to overcome these challenges. Future advancements in lithium battery technology are closely tied to innovations in separator design. By exploring recent advancements and emerging trends, this review aims to outline potential development paths for improving separator materials. It seeks to address key issues and propose novel approaches, ultimately contributing to the development of safer, more efficient, and commercially viable lithium metal batteries.","PeriodicalId":18277,"journal":{"name":"Materials Today Energy","volume":"39 1","pages":""},"PeriodicalIF":9.3,"publicationDate":"2024-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142259790","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 : 2024-08-31DOI: 10.1016/j.mtener.2024.101682
Jyoti Yadav, Lakshay Bhardwaj, J.P. Singh
Effective charge separation is crucial for improving the sensitivity of photoelectrochemical studies. Here, we provide an immense magnetic field-based electron spin polarization approach for an efficient charge carrier separation. We have fabricated NiO and CoO thin film and nanorod arrays by electron beam evaporation glancing angle method followed by annealing in a two-zone furnace. The photoelectrochemical performance was investigated for NiO and CoO samples in the presence and absence of a magnetic field. The NiO and CoO nanorods array samples exhibit better absorption compared with the thin film samples. The CoO and NiO nanorod arrays showed the highest photocurrent density of 0.12 and 0.55 mA/cm in a magnetic field. The superior photoelectrochemical response of NiO and CoO nanorods in a magnetic field could be ascribed to the limitation of non-radiative recombination of carriers manipulated by Lorentz force and spin polarization. Furthermore, the electrochemical impedance spectra of NiO and CoO nanorod arrays in a magnetic field show the least charge transfer resistance. This study sheds light on the interaction process between external fields and radiative/non-radiative recombination of manipulating carriers. Thus, the application of a magnetic field presents an efficient and versatile approach to enhance the performance of photoelectrodes in solar water splitting.
{"title":"Magnetic field-augmented photoelectrochemical water splitting in Co3O4 and NiO nanorod arrays","authors":"Jyoti Yadav, Lakshay Bhardwaj, J.P. Singh","doi":"10.1016/j.mtener.2024.101682","DOIUrl":"https://doi.org/10.1016/j.mtener.2024.101682","url":null,"abstract":"Effective charge separation is crucial for improving the sensitivity of photoelectrochemical studies. Here, we provide an immense magnetic field-based electron spin polarization approach for an efficient charge carrier separation. We have fabricated NiO and CoO thin film and nanorod arrays by electron beam evaporation glancing angle method followed by annealing in a two-zone furnace. The photoelectrochemical performance was investigated for NiO and CoO samples in the presence and absence of a magnetic field. The NiO and CoO nanorods array samples exhibit better absorption compared with the thin film samples. The CoO and NiO nanorod arrays showed the highest photocurrent density of 0.12 and 0.55 mA/cm in a magnetic field. The superior photoelectrochemical response of NiO and CoO nanorods in a magnetic field could be ascribed to the limitation of non-radiative recombination of carriers manipulated by Lorentz force and spin polarization. Furthermore, the electrochemical impedance spectra of NiO and CoO nanorod arrays in a magnetic field show the least charge transfer resistance. This study sheds light on the interaction process between external fields and radiative/non-radiative recombination of manipulating carriers. Thus, the application of a magnetic field presents an efficient and versatile approach to enhance the performance of photoelectrodes in solar water splitting.","PeriodicalId":18277,"journal":{"name":"Materials Today Energy","volume":"2 1","pages":""},"PeriodicalIF":9.3,"publicationDate":"2024-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142259786","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}
This study explores the integration of Au nanoparticles (NPs) into molybdenum oxide (MoO) thin films to form a MoO/Au NPs/MoO (MAM) stack. This stack serves as a hole transport layer (HTL) in silicon heterojunction solar cells, aiming to address the challenges of safety concerns and inefficient carrier transport. Ultraviolet photoelectron spectroscopy and X-ray photoelectron spectroscopy spectra demonstrate that the incorporation of Au NPs notably raises the work function of MAM to 5.85 eV and stabilize Mo concentrations at 94.07%. In addition, Au NPs effectively act as a shield against detrimental interactions with Ag, thereby improving the interfacial stability between the back electrode and HTL. This strategic enhancement facilitates the formation of surface plasmon polaritons, reduces the contact resistance to 41.19 mΩ cm, and boosts the quantum efficiency by injecting hot electrons and intensifying the surface electric field. These advancements lead to a significant enhancement in the fill factor and short-circuit current, leading to the development of a heterojunction solar cell with an increased efficiency () from 19.81% to 22.03%. This investigation underscores the transformative potential of engineered nanomaterials in elevating the performance and stability of photovoltaic devices, promoting the wider adoption of renewable energy technologies.
{"title":"Efficient hole transport layers for silicon heterojunction solar cells by surface plasmonic modification in MoOx/Au NPs/MoOx stacks","authors":"Qianfeng Gao, Zhiyuan Xu, Yu Yan, Wei Li, Yaya Song, Jing Wang, Maobin Zhang, Junming Xue, Huizhi Ren, Shengzhi Xu, Xinliang Chen, Yi Ding, Qian Huang, Xiaodan Zhang, Ying Zhao, Guofu Hou","doi":"10.1016/j.mtener.2024.101681","DOIUrl":"https://doi.org/10.1016/j.mtener.2024.101681","url":null,"abstract":"This study explores the integration of Au nanoparticles (NPs) into molybdenum oxide (MoO) thin films to form a MoO/Au NPs/MoO (MAM) stack. This stack serves as a hole transport layer (HTL) in silicon heterojunction solar cells, aiming to address the challenges of safety concerns and inefficient carrier transport. Ultraviolet photoelectron spectroscopy and X-ray photoelectron spectroscopy spectra demonstrate that the incorporation of Au NPs notably raises the work function of MAM to 5.85 eV and stabilize Mo concentrations at 94.07%. In addition, Au NPs effectively act as a shield against detrimental interactions with Ag, thereby improving the interfacial stability between the back electrode and HTL. This strategic enhancement facilitates the formation of surface plasmon polaritons, reduces the contact resistance to 41.19 mΩ cm, and boosts the quantum efficiency by injecting hot electrons and intensifying the surface electric field. These advancements lead to a significant enhancement in the fill factor and short-circuit current, leading to the development of a heterojunction solar cell with an increased efficiency () from 19.81% to 22.03%. This investigation underscores the transformative potential of engineered nanomaterials in elevating the performance and stability of photovoltaic devices, promoting the wider adoption of renewable energy technologies.","PeriodicalId":18277,"journal":{"name":"Materials Today Energy","volume":"25 1","pages":""},"PeriodicalIF":9.3,"publicationDate":"2024-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142259787","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}
Rechargeable aluminum batteries (RABs) are attracting significant attention for their high theoretical capacity and abundant reserves. However, the poor mechanical performance of glass fiber (GF) separators and the formation of Al dendrite severely hinder the practical cycle life of these batteries. Herein, a flexible ceramic separator was developed with simple coating technique, effectively improving the cycling stability of RABs. Compared with the commercial GF separator, this flexible ceramic separator has less thickness and superior electrolyte wettability, resulting in improved interfacial compatibility and minimized interfacial resistance. Moreover, its exceptional flexibility and toughness (stress of 39.34 MPa) coupled with uniform nanopore structure, which can effectively resist the penetration of dendrites. As expected, this ceramic flexible separator facilitates stable cycling of the symmetric battery for over 1762 h at 2 mA/cm and 2 mAh/cm. It also permits the pouch Al//flake graphite full battery to achieve a coulombic efficiency of up to 90% even after 115 cycles. Apparently, this work developed the simple separator manufacturing strategy that provides an effective method to improve the cycling stability of RABs and extends the application to other types of batteries.
{"title":"Prolonging rechargeable aluminum batteries life with flexible ceramic separator","authors":"Yifan Liu, Dong Li, Xuan Wang, Yuehong Xie, Aqun Zheng, Lilong Xiong","doi":"10.1016/j.mtener.2024.101679","DOIUrl":"https://doi.org/10.1016/j.mtener.2024.101679","url":null,"abstract":"Rechargeable aluminum batteries (RABs) are attracting significant attention for their high theoretical capacity and abundant reserves. However, the poor mechanical performance of glass fiber (GF) separators and the formation of Al dendrite severely hinder the practical cycle life of these batteries. Herein, a flexible ceramic separator was developed with simple coating technique, effectively improving the cycling stability of RABs. Compared with the commercial GF separator, this flexible ceramic separator has less thickness and superior electrolyte wettability, resulting in improved interfacial compatibility and minimized interfacial resistance. Moreover, its exceptional flexibility and toughness (stress of 39.34 MPa) coupled with uniform nanopore structure, which can effectively resist the penetration of dendrites. As expected, this ceramic flexible separator facilitates stable cycling of the symmetric battery for over 1762 h at 2 mA/cm and 2 mAh/cm. It also permits the pouch Al//flake graphite full battery to achieve a coulombic efficiency of up to 90% even after 115 cycles. Apparently, this work developed the simple separator manufacturing strategy that provides an effective method to improve the cycling stability of RABs and extends the application to other types of batteries.","PeriodicalId":18277,"journal":{"name":"Materials Today Energy","volume":"77 1","pages":""},"PeriodicalIF":9.3,"publicationDate":"2024-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142259785","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}
This study investigates the development of self-powered sensors employing single-pillar thermocells to harness body heat and solar thermal energy. A pyrolytic graphite sheet was selected for its low water vapor permeability, and its surface was modified to be hydrophilic to minimize interfacial resistance. Two types of DC–DC converters, Asahi Kasei Microdevices AP4473 and matrix mercury, underwent evaluation for compatibility with these thermocells. The compact 1.5 cm (1 cm × 1 cm × 1.5 cm) device effectively powered the AP4473 converter, illuminating a light-emitting diode. A larger device (2.5 cm × 2.5 cm × 1.5 cm) efficiently drove the matrix mercury converter, enabling the operation of bluetooth low-power sensors. These self-powered sensors wirelessly provided humidity and temperature data using solar thermal energy for approximately 4 h per day during peak temperature differences in January. This study showcases the potential of thermocells for sustainable energy harvesting and suggests avenues for future research, such as exploring alternative heat sources like geothermal energy to power these sensors.
{"title":"Self-powered sensors utilizing single-pillar thermocells with pyrolytic graphite sheet electrodes: harvesting body heat and solar thermal energy","authors":"Lixian Jiang, Teruo Ebihara, Masakazu Mukaida, Kouki Akaike, Kazumasa Shimamoto, Shohei Horike, Qingshuo Wei","doi":"10.1016/j.mtener.2024.101668","DOIUrl":"https://doi.org/10.1016/j.mtener.2024.101668","url":null,"abstract":"This study investigates the development of self-powered sensors employing single-pillar thermocells to harness body heat and solar thermal energy. A pyrolytic graphite sheet was selected for its low water vapor permeability, and its surface was modified to be hydrophilic to minimize interfacial resistance. Two types of DC–DC converters, Asahi Kasei Microdevices AP4473 and matrix mercury, underwent evaluation for compatibility with these thermocells. The compact 1.5 cm (1 cm × 1 cm × 1.5 cm) device effectively powered the AP4473 converter, illuminating a light-emitting diode. A larger device (2.5 cm × 2.5 cm × 1.5 cm) efficiently drove the matrix mercury converter, enabling the operation of bluetooth low-power sensors. These self-powered sensors wirelessly provided humidity and temperature data using solar thermal energy for approximately 4 h per day during peak temperature differences in January. This study showcases the potential of thermocells for sustainable energy harvesting and suggests avenues for future research, such as exploring alternative heat sources like geothermal energy to power these sensors.","PeriodicalId":18277,"journal":{"name":"Materials Today Energy","volume":"39 1","pages":""},"PeriodicalIF":9.3,"publicationDate":"2024-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142259789","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 : 2024-08-27DOI: 10.1016/j.mtener.2024.101678
Weiqi Li, Liwei Jiang, Zhenjie Zhang, Chunliu Xu, Lin Zhou, Rongbing Dang, Junmei Zhao, Yong-Sheng Hu
NaV(PO) is a promising cathode for Na-ion batteries (NIBs) owing to the high electrochemical reversibility. The NaV(PO) has two typical polymorphs including rhombohedral and monoclinic phases; the former has been extensively studied, whereas the latter is rarely reported. Here, we successfully designed monoclinic NaV(PO)-based cathode via Ga and Fe substitutions owing to the lowered lattice energy. In addition, we revealed that Ga substitution improves average voltage owing to the activation of the V/V redox couple and the Fe substitution enhances rate capability due to the decreased band gap and Na-ion diffusion activation energy. As a result, the designed monoclinic NaVGaFe(PO) cathode exhibits high voltage plateaus (3.4 V and 4 V) and high-rate capability (from 116.8 mA h/g at 0.2 C to 103 mA h/g at 20 C) as well as superior cycling stability (99.9% capacity retention over 4,500 cycles at 5 C). Moreover, the assembled NaVGaFe(PO)//hard carbon full cell delivers a high-energy density of 313.8 Wh/kg with 86.4% capacity retention after 100 cycles at 1 C. This work demonstrates the design of monoclinic NaV(PO)-based cathode via bimetallic substitution, providing a new route for development of high-energy and long-lifespan NIBs.
由于具有很高的电化学可逆性，NaV(PO) 是一种很有前途的钠离子电池（NIBs）阴极。NaV(PO)有两种典型的多晶型，包括斜方晶相和单斜晶相；前者已被广泛研究，而后者则鲜有报道。在这里，我们通过镓和铁的置换成功地设计出了单斜NaV(PO)基阴极，因为它的晶格能降低了。此外，我们还发现，由于 V/V 氧化还原偶的激活，镓的取代提高了平均电压；由于带隙和 Na 离子扩散激活能的降低，铁的取代提高了速率能力。因此，所设计的单斜 NaVGaFe（PO）阴极具有较高的电压高原（3.4 V 和 4 V）和较高的速率能力（从 0.2 C 时的 116.8 mA h/g 到 20 C 时的 103 mA h/g），以及卓越的循环稳定性（在 5 C 下循环 4,500 次，容量保持率为 99.9%）。此外，组装后的 NaVGaFe（PO）//硬碳全电池在 1 C 下循环 100 次后，能量密度高达 313.8 Wh/kg，容量保持率为 86.4%。这项工作展示了通过双金属置换设计单斜 NaV（PO）基阴极的方法，为开发高能量、长寿命无电池组件提供了一条新途径。
{"title":"Tailoring monoclinic Na3V2(PO4)3-based cathode via bimetallic substitution for high-energy and long-lifespan Na-ion batteries","authors":"Weiqi Li, Liwei Jiang, Zhenjie Zhang, Chunliu Xu, Lin Zhou, Rongbing Dang, Junmei Zhao, Yong-Sheng Hu","doi":"10.1016/j.mtener.2024.101678","DOIUrl":"https://doi.org/10.1016/j.mtener.2024.101678","url":null,"abstract":"NaV(PO) is a promising cathode for Na-ion batteries (NIBs) owing to the high electrochemical reversibility. The NaV(PO) has two typical polymorphs including rhombohedral and monoclinic phases; the former has been extensively studied, whereas the latter is rarely reported. Here, we successfully designed monoclinic NaV(PO)-based cathode via Ga and Fe substitutions owing to the lowered lattice energy. In addition, we revealed that Ga substitution improves average voltage owing to the activation of the V/V redox couple and the Fe substitution enhances rate capability due to the decreased band gap and Na-ion diffusion activation energy. As a result, the designed monoclinic NaVGaFe(PO) cathode exhibits high voltage plateaus (3.4 V and 4 V) and high-rate capability (from 116.8 mA h/g at 0.2 C to 103 mA h/g at 20 C) as well as superior cycling stability (99.9% capacity retention over 4,500 cycles at 5 C). Moreover, the assembled NaVGaFe(PO)//hard carbon full cell delivers a high-energy density of 313.8 Wh/kg with 86.4% capacity retention after 100 cycles at 1 C. This work demonstrates the design of monoclinic NaV(PO)-based cathode via bimetallic substitution, providing a new route for development of high-energy and long-lifespan NIBs.","PeriodicalId":18277,"journal":{"name":"Materials Today Energy","volume":"29 1","pages":""},"PeriodicalIF":9.3,"publicationDate":"2024-08-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142259788","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 : 2024-08-26DOI: 10.1016/j.mtener.2024.101677
Fei-Feng Mao, Yu-Hua Dong, Yan Zhou, Ming-Shuai Sun, Wei Hui, Duan-jian Tao
Global climate change has driven the scientific community to improve the utilization of a critical C1 resource carbon dioxide (CO) through carbon capture utilization (CCU) technology. The cycloaddition of CO with epoxides provides perfect atom economy and economic feasibility to produce versatile cyclic carbonates used in various industries. However, the stable nature of CO and epoxides requires highly active catalysts. In this work, the repurpose of nitrogenous waste melamine foams (MFs) as high-performance catalysts for the cycloaddition of CO was explored. The pyrolyzed MF was modified with Cu to prepare a series of acid-base bifunctional porous catalysts (MFC-X-Cu). The results demonstrate that the acid-base synergy of the MFC-X-Cu catalysts increases the efficiency of the cycloaddition of various epoxides, yielding target products at 96–99% under mild conditions. Moreover, the characterization results revealed that the superior performance of MFC-X-Cu stems from its hollow structure and acid-base synergy, which are derived from nitrogen species in the repurposed MF and the post-modified copper component. The catalyst maintained consistent catalytic efficiency over five cycles, highlighting its strong recyclability. This work presents an eco-friendly and sustainable approach towards carbon neutrality by utilizing modified waste materials for CO conversion into high-value chemicals.
全球气候变化促使科学界通过碳捕获利用（CCU）技术来提高二氧化碳（CO）这一重要 C1 资源的利用率。一氧化碳与环氧化物的环加成反应提供了完美的原子经济性和经济可行性，可生产出用于各行各业的多功能环碳酸盐。然而，一氧化碳和环氧化物的稳定性质需要高活性催化剂。在这项工作中，研究人员探索了如何将含氮废三聚氰胺泡沫（MFs）重新用作 CO 环加成的高性能催化剂。利用 Cu 对热解的三聚氰胺泡沫进行改性，制备了一系列酸碱双功能多孔催化剂（MFC-X-Cu）。结果表明，MFC-X-Cu 催化剂的酸碱协同作用提高了各种环氧化物的环加成效率，在温和条件下，目标产物的产率可达 96-99%。此外，表征结果表明，MFC-X-Cu 的优异性能源于其中空结构和酸碱协同作用，而这两种作用来自于重新利用的中频和后改性铜组分中的氮物种。该催化剂在五个循环中保持了稳定的催化效率，突出了其强大的可回收性。这项研究提出了一种生态友好和可持续的方法，即利用改性废料将一氧化碳转化为高价值化学品，从而实现碳中和。
{"title":"Sustainable repurpose of waste melamine foam into bifunctional catalysts for efficient CO2 capture and conversion","authors":"Fei-Feng Mao, Yu-Hua Dong, Yan Zhou, Ming-Shuai Sun, Wei Hui, Duan-jian Tao","doi":"10.1016/j.mtener.2024.101677","DOIUrl":"https://doi.org/10.1016/j.mtener.2024.101677","url":null,"abstract":"Global climate change has driven the scientific community to improve the utilization of a critical C1 resource carbon dioxide (CO) through carbon capture utilization (CCU) technology. The cycloaddition of CO with epoxides provides perfect atom economy and economic feasibility to produce versatile cyclic carbonates used in various industries. However, the stable nature of CO and epoxides requires highly active catalysts. In this work, the repurpose of nitrogenous waste melamine foams (MFs) as high-performance catalysts for the cycloaddition of CO was explored. The pyrolyzed MF was modified with Cu to prepare a series of acid-base bifunctional porous catalysts (MFC-X-Cu). The results demonstrate that the acid-base synergy of the MFC-X-Cu catalysts increases the efficiency of the cycloaddition of various epoxides, yielding target products at 96–99% under mild conditions. Moreover, the characterization results revealed that the superior performance of MFC-X-Cu stems from its hollow structure and acid-base synergy, which are derived from nitrogen species in the repurposed MF and the post-modified copper component. The catalyst maintained consistent catalytic efficiency over five cycles, highlighting its strong recyclability. This work presents an eco-friendly and sustainable approach towards carbon neutrality by utilizing modified waste materials for CO conversion into high-value chemicals.","PeriodicalId":18277,"journal":{"name":"Materials Today Energy","volume":"25 1","pages":""},"PeriodicalIF":9.3,"publicationDate":"2024-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142259828","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 : 2024-08-22DOI: 10.1016/j.mtener.2024.101676
Jianping Xie, Zhengwei Fan, Dongdong Mao, Pian Zhang, Sai Su, Yijia Qin, Junwei Zhang, Lisha Yan, Yongxin Zhang, Hanfu Wang, Luting Song, Peipei Chen, Weiguo Chu
High-nickel layered oxides are promising cathodes for lithium-ion batteries due to relatively high capacity and low cost, which however are still faced with safety issues because of poor stability against cycling. Herein, a facile one-pot solid-state method is employed for preparation of trace Ti/S co-doped LiNiCoO. Ti and S co-doping enhances both rate capability and intrinsic stability greatly in a mutually promoting manner compared with individual Ti and S doping. The co-doped samples show excellent rate capability with 170.9 mAh/g at 5 C and superior intrinsic stability with a capacity retention of 88.6% at 1 C after 200 cycles at room temperature, in sharp contrast with 132.2 mAh/g and 61.6% for the pristine samples. Full cells achieve excellent long-term stability with a retention of 92.7% after 400 cycles at 1 C. The improved performance can be ascribed to the formation of stronger Ti–O bonds and of a thin rock-salt protective layer enabled by sulfur with the stability enhanced by Ti modifications, and the activation of extra redox reactions triggered by sulfur. The mutually promoting enhancement effect by doping different alien elements opens a new and unique design strategy for performance improvement of electrode materials.
高镍层状氧化物因其相对较高的容量和较低的成本而成为锂离子电池的理想正极，但由于其循环稳定性较差，因此仍面临着安全问题。本文采用简便的一锅固态法制备了痕量 Ti/S 共掺杂 LiNiCoO。与单独掺杂 Ti 和 S 相比，Ti 和 S 共掺杂以相互促进的方式大大提高了速率能力和内在稳定性。共掺杂样品显示出卓越的速率能力，在 5 C 下达到 170.9 mAh/g，并具有出色的内在稳定性，在室温下循环 200 次后，1 C 下的容量保持率为 88.6%，与原始样品的 132.2 mAh/g 和 61.6% 形成鲜明对比。性能的提高可归因于硫形成了更强的 Ti-O 键和更薄的岩盐保护层，钛改性增强了稳定性，以及硫激活了额外的氧化还原反应。通过掺杂不同的外来元素而产生的相互促进的增强效应，为电极材料性能的提高开辟了一种全新而独特的设计策略。
{"title":"Surface phase stability of high-nickel layered oxides by titanium and sulfur co-modifications","authors":"Jianping Xie, Zhengwei Fan, Dongdong Mao, Pian Zhang, Sai Su, Yijia Qin, Junwei Zhang, Lisha Yan, Yongxin Zhang, Hanfu Wang, Luting Song, Peipei Chen, Weiguo Chu","doi":"10.1016/j.mtener.2024.101676","DOIUrl":"https://doi.org/10.1016/j.mtener.2024.101676","url":null,"abstract":"High-nickel layered oxides are promising cathodes for lithium-ion batteries due to relatively high capacity and low cost, which however are still faced with safety issues because of poor stability against cycling. Herein, a facile one-pot solid-state method is employed for preparation of trace Ti/S co-doped LiNiCoO. Ti and S co-doping enhances both rate capability and intrinsic stability greatly in a mutually promoting manner compared with individual Ti and S doping. The co-doped samples show excellent rate capability with 170.9 mAh/g at 5 C and superior intrinsic stability with a capacity retention of 88.6% at 1 C after 200 cycles at room temperature, in sharp contrast with 132.2 mAh/g and 61.6% for the pristine samples. Full cells achieve excellent long-term stability with a retention of 92.7% after 400 cycles at 1 C. The improved performance can be ascribed to the formation of stronger Ti–O bonds and of a thin rock-salt protective layer enabled by sulfur with the stability enhanced by Ti modifications, and the activation of extra redox reactions triggered by sulfur. The mutually promoting enhancement effect by doping different alien elements opens a new and unique design strategy for performance improvement of electrode materials.","PeriodicalId":18277,"journal":{"name":"Materials Today Energy","volume":"7 1","pages":""},"PeriodicalIF":9.3,"publicationDate":"2024-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142188280","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}
High-energy-density lithium metal batteries have shown promising applications in drones and electrical vehicles. However, the growth of lithium dendrites and the formation of unstable solid electrolyte interphase (SEI) become the main factors restricting their development. In this study, dendrite-free lithium metal anodes (ZB@Li) were developed with ionic/electronic conductive interface layers by a solvent-free mechanochemical method. By rubbing zinc borate (ZB) powder on lithium foil, a mixed interface layer is formed with the generation of lithium borate phase and the Li–Zn alloy phase. The lithium borate phase provides a low diffusion energy barrier and high ionic conductivity for sufficient potential gradient to induce rapid deposition of ions on the interface layer. The Li–Zn alloy phase owns the lithiophilic characteristic and a high electronic conductivity. The combination of the two phases provides mixed ions/electrons paths with enhanced transport kinetics and realize uniform and planar deposition of lithium. As a result, the ZB@Li symmetrical cell exhibits a prolonged cycling performance of over 4,200 h and the ZB@Li||LFP (LFP= lithium iron phosphate [LiFePO]) full cell shows a long cycle life for more than 500 cycles at 2 C with a high capacity retention rate of 84.6% at a high loading mass of 10 mg/cm.
{"title":"Mechanochemistry induced mixed ionic/electronic conductive interphase enabling dendrite-free lithium metal anodes","authors":"Wen Pan, Shaozhen Huang, Kecheng Long, Xinsheng Liu, Piao Qing, Haoling Liu, Yunke Jin, Yuxin Chen, Huimiao Li, Lin Mei, Zhibin Wu, Libao Chen","doi":"10.1016/j.mtener.2024.101675","DOIUrl":"https://doi.org/10.1016/j.mtener.2024.101675","url":null,"abstract":"High-energy-density lithium metal batteries have shown promising applications in drones and electrical vehicles. However, the growth of lithium dendrites and the formation of unstable solid electrolyte interphase (SEI) become the main factors restricting their development. In this study, dendrite-free lithium metal anodes (ZB@Li) were developed with ionic/electronic conductive interface layers by a solvent-free mechanochemical method. By rubbing zinc borate (ZB) powder on lithium foil, a mixed interface layer is formed with the generation of lithium borate phase and the Li–Zn alloy phase. The lithium borate phase provides a low diffusion energy barrier and high ionic conductivity for sufficient potential gradient to induce rapid deposition of ions on the interface layer. The Li–Zn alloy phase owns the lithiophilic characteristic and a high electronic conductivity. The combination of the two phases provides mixed ions/electrons paths with enhanced transport kinetics and realize uniform and planar deposition of lithium. As a result, the ZB@Li symmetrical cell exhibits a prolonged cycling performance of over 4,200 h and the ZB@Li||LFP (LFP= lithium iron phosphate [LiFePO]) full cell shows a long cycle life for more than 500 cycles at 2 C with a high capacity retention rate of 84.6% at a high loading mass of 10 mg/cm.","PeriodicalId":18277,"journal":{"name":"Materials Today Energy","volume":"45 1","pages":""},"PeriodicalIF":9.3,"publicationDate":"2024-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142188281","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 : 2024-08-21DOI: 10.1016/j.mtener.2024.101670
Guiju Hu, Chengwu Shi, Bo Yang, Zihao Wang, Kai Lv, Yanqing Wang, Fuling Guo, Wangchao Chen
SbS is a promising absorber material for indoor photovoltaics due to the appropriate direct bandgap of 1.75 eV, high element abundance, low toxicity, stability, and single phase. Considering the indoor lighting irradiance is very low and the resulting carrier numbers are relatively less and SbS is quasi-one-dimensional crystal structure, the preferential orientation controlling of SbS is very important to improve the power conversion efficiency (PCE) of SbS indoor photovoltaics. Herein, SbS and low Se content SbSeS films are prepared by chemical bath deposition and the preferential orientation of SbS films is controlled by introducing SbCl and selenourea in the growth solution. The uniformity of the S and Se distribution in low Se content SbSeS films is adjusted by introducing EDTA-2Na. Using the warm white LED with a color temperature of 3347 K and illuminance of 1000 lux, SbS and low Se content SbSeS indoor photovoltaics achieve the PCE of 16.58% for SbS and 17.62% for SbSeS, which is the highest PCE for antimony chalcogenide indoor photovoltaics. Therefore, the preferential orientation controlling by introducing SbCl and selenourea into the growth solution is an efficient strategy for fabricating high-efficiency SbS and low Se content SbSeS indoor photovoltaics.
由于具有 1.75 eV 的适当直接带隙、高元素丰度、低毒性、稳定性和单相性，SbS 是一种很有前途的室内光伏吸收材料。考虑到室内照明辐照度非常低，产生的载流子数相对较少，且 SbS 为准一维晶体结构，因此 SbS 的优先取向控制对于提高 SbS 室内光伏的功率转换效率（PCE）非常重要。本文采用化学沉积法制备了 SbS 和低 Se 含量的 SbSeS 薄膜，并通过在生长溶液中引入 SbCl 和硒脲来控制 SbS 薄膜的优先取向。通过引入 EDTA-2Na 来调节低硒含量 SbSeS 薄膜中 S 和 Se 分布的均匀性。使用色温为 3347 K、照度为 1000 lux 的暖白光 LED，SbS 和低硒含量 SbSeS 室内光伏器件的 PCE 分别达到了 16.58% 和 17.62%，这是目前锑瑀室内光伏器件的最高 PCE。因此，通过在生长溶液中引入氯化锑和硒脲来控制优先取向，是制造高效 SbS 和低硒含量 SbSeS 室内光伏器件的有效策略。
{"title":"The preferential orientation controlling for efficient Sb2S3 and low Se content Sb2SeyS3-y indoor photovoltaics","authors":"Guiju Hu, Chengwu Shi, Bo Yang, Zihao Wang, Kai Lv, Yanqing Wang, Fuling Guo, Wangchao Chen","doi":"10.1016/j.mtener.2024.101670","DOIUrl":"https://doi.org/10.1016/j.mtener.2024.101670","url":null,"abstract":"SbS is a promising absorber material for indoor photovoltaics due to the appropriate direct bandgap of 1.75 eV, high element abundance, low toxicity, stability, and single phase. Considering the indoor lighting irradiance is very low and the resulting carrier numbers are relatively less and SbS is quasi-one-dimensional crystal structure, the preferential orientation controlling of SbS is very important to improve the power conversion efficiency (PCE) of SbS indoor photovoltaics. Herein, SbS and low Se content SbSeS films are prepared by chemical bath deposition and the preferential orientation of SbS films is controlled by introducing SbCl and selenourea in the growth solution. The uniformity of the S and Se distribution in low Se content SbSeS films is adjusted by introducing EDTA-2Na. Using the warm white LED with a color temperature of 3347 K and illuminance of 1000 lux, SbS and low Se content SbSeS indoor photovoltaics achieve the PCE of 16.58% for SbS and 17.62% for SbSeS, which is the highest PCE for antimony chalcogenide indoor photovoltaics. Therefore, the preferential orientation controlling by introducing SbCl and selenourea into the growth solution is an efficient strategy for fabricating high-efficiency SbS and low Se content SbSeS indoor photovoltaics.","PeriodicalId":18277,"journal":{"name":"Materials Today Energy","volume":"3 1","pages":""},"PeriodicalIF":9.3,"publicationDate":"2024-08-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142188282","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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