Pub Date : 2025-02-10DOI: 10.1016/j.mtener.2025.101834
Zhaohui Huang, Tongzheng Zhang, Yuheng Ma, Guanshun Xie, Le Liao, Changqiang Yu, Xiuqiang Xie, Nan Zhang
{"title":"Balancing the photoactive center and reactive center tandem in Cu/La bimetallic site metal−organic frameworks for boosted photocatalytic CO2-to-CO reduction","authors":"Zhaohui Huang, Tongzheng Zhang, Yuheng Ma, Guanshun Xie, Le Liao, Changqiang Yu, Xiuqiang Xie, Nan Zhang","doi":"10.1016/j.mtener.2025.101834","DOIUrl":"https://doi.org/10.1016/j.mtener.2025.101834","url":null,"abstract":"","PeriodicalId":18277,"journal":{"name":"Materials Today Energy","volume":"49 1","pages":"101834-101834"},"PeriodicalIF":0.0,"publicationDate":"2025-02-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147332823","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 : 2024-12-17DOI: 10.1016/j.mtener.2024.101779
Hang Lou, Nan Li, Ruxia Zhang, Yanhui Chen, Chao Xie, Hao Jiang, Yahui Yang, Wenjun Zhang
Efficient Ni-based catalysts for small organic molecule electrooxidation are crucial yet challenging to develop. This study presents self-supported nickel-nickel Hofmann-type coordination polymer nanoplate arrays (Ni-HCP- t /NF) synthesized through an electrochemical semi-sacrificial growth strategy. By controlling the growth time of Ni-HCP- t nanoplates, we optimized the structure and electrochemical performance , with Ni-HCP-40/NF exhibiting significant bifunctional electrocatalytic activity for urea and methanol oxidation reactions (UOR and MOR), achieving a current density of 100 mA cm −2 at only 1.44 and 1.46 V (vs. RHE), respectively. Moreover, urea-water and methanol-water electrolysis systems using Ni-HCP-40/NF as the anode demonstrate reduced voltages of 1.61 and 1.64 V for urea-water and methanol-water electrolysis at 100 mA cm −2 , respectively, dramatically lower than water electrolysis (1.85 V). The superior UOR/MOR activities are attributed to the abundant and fully exposed Ni sites and efficient electron/mass transfer rate facilitated by three-dimensional nanoplate architecture. • 3D self-supported nickel-nickel HCP (Ni-HCP- t /NF) nanoplate arrays are synthesized. • An in situ electrochemical semi-sacrificial growth strategy is proposed. • Ni-HCP-40/NF shows superior bifunctional UOR/MOR activity and stability. • Urea/methanol-water electrolysis using Ni-HCP-40/NF anode has superior performance.
高效的镍基有机小分子电氧化催化剂的开发至关重要，但仍具有挑战性。采用电化学半牺牲生长策略合成了自支撑镍-镍霍夫曼型配位聚合物纳米板阵列（Ni-HCP- t /NF）。通过控制Ni-HCP- t纳米片的生长时间，我们优化了Ni-HCP- t纳米片的结构和电化学性能，Ni-HCP-40/NF在尿素和甲醇氧化反应（UOR和MOR）中表现出显著的双功能电催化活性，在1.44和1.46 V（相对于RHE）下分别实现了100 mA cm - 2的电流密度。此外，使用Ni-HCP-40/NF作为阳极的尿素-水和甲醇-水电解系统在100 mA cm - 2时，尿素-水和甲醇-水电解的电压分别降低了1.61和1.64 V，显著低于水电解的1.85 V。优异的UOR/MOR活性归因于丰富且充分暴露的Ni位点和三维纳米板结构促进的高效电子/质传递速率。•合成了三维自支撑镍镍HCP （Ni-HCP- t /NF）纳米板阵列。提出了一种原位电化学半牺牲生长策略。•Ni-HCP-40/NF具有优越的双功能UOR/MOR活性和稳定性。•采用Ni-HCP-40/NF阳极电解尿素/甲醇-水具有优越的性能。
{"title":"Electrochemical semi-sacrificial growth of Ni-HCP nanoplate arrays for urea/methanol electrooxidation-coupled water electrolysis","authors":"Hang Lou, Nan Li, Ruxia Zhang, Yanhui Chen, Chao Xie, Hao Jiang, Yahui Yang, Wenjun Zhang","doi":"10.1016/j.mtener.2024.101779","DOIUrl":"https://doi.org/10.1016/j.mtener.2024.101779","url":null,"abstract":"Efficient Ni-based catalysts for small organic molecule electrooxidation are crucial yet challenging to develop. This study presents self-supported nickel-nickel Hofmann-type coordination polymer nanoplate arrays (Ni-HCP- t /NF) synthesized through an electrochemical semi-sacrificial growth strategy. By controlling the growth time of Ni-HCP- t nanoplates, we optimized the structure and electrochemical performance , with Ni-HCP-40/NF exhibiting significant bifunctional electrocatalytic activity for urea and methanol oxidation reactions (UOR and MOR), achieving a current density of 100 mA cm −2 at only 1.44 and 1.46 V (vs. RHE), respectively. Moreover, urea-water and methanol-water electrolysis systems using Ni-HCP-40/NF as the anode demonstrate reduced voltages of 1.61 and 1.64 V for urea-water and methanol-water electrolysis at 100 mA cm −2 , respectively, dramatically lower than water electrolysis (1.85 V). The superior UOR/MOR activities are attributed to the abundant and fully exposed Ni sites and efficient electron/mass transfer rate facilitated by three-dimensional nanoplate architecture. • 3D self-supported nickel-nickel HCP (Ni-HCP- t /NF) nanoplate arrays are synthesized. • An in situ electrochemical semi-sacrificial growth strategy is proposed. • Ni-HCP-40/NF shows superior bifunctional UOR/MOR activity and stability. • Urea/methanol-water electrolysis using Ni-HCP-40/NF anode has superior performance.","PeriodicalId":18277,"journal":{"name":"Materials Today Energy","volume":"48 1","pages":"101779-101779"},"PeriodicalIF":0.0,"publicationDate":"2024-12-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147330500","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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}
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