Materials Today Energy最新文献

{"title":"Recent advances of tailoring defects and pores in hard carbon for sodium storage","authors":"Chenyang Huang, Junyi Yin, Weichen Shi, Yonghong Cheng, Xin Xu","doi":"10.1016/j.mtener.2024.101501","DOIUrl":"https://doi.org/10.1016/j.mtener.2024.101501","url":null,"abstract":"<p>Sodium-ion batteries (SIBs) are promising alternatives for Lithium-ion batteries in the field of large-scale energy storage for abundant sodium resources. Hard Carbons (HCs) are the most commonly used anode materials of SIBs for balanced electrochemical performance. The major challenges lie in low initial coulombic efficiency (ICE), insufficient reversible capacity, and the costs. Defects, pores, and graphitization degree are the main characteristics of HCs. The synergistic effects of defects and pores decide the surface adsorption distribution of electrolytes and the real electrochemical active area, which determine the solid-electrolyte interface formation process and ICE values. Sodium cluster stored in closed pores contributes to low-voltage plateau capacity with high reversibility. Suitable defect distribution on the inner wall of the closed pores ensures stable cluster formation. This review focuses on the defects and pores of HC and corresponding modification strategies, which are highlighted by their synergistic effects. We expect to offer valuable guidance for constructing next-generation HC anodes.</p>","PeriodicalId":18277,"journal":{"name":"Materials Today Energy","volume":"24 1","pages":""},"PeriodicalIF":9.3,"publicationDate":"2024-01-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139463899","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}

{"title":"Novel S-scheme Bi24O31Cl10/Bi7Fe2Ti2O17Cl Heterojunction for Efficient and Stable Photocatalytic Activities","authors":"Yunxiang Zhang, Zhichao Mu, Chenliang Zhou, Zhe Zhang, Zhili Chen, Xiangyu Cheng, Hazem Abdelsalam, Wei Chen, Diab Khalafallah, Qinfang Zhang","doi":"10.1016/j.mtener.2024.101498","DOIUrl":"https://doi.org/10.1016/j.mtener.2024.101498","url":null,"abstract":"<p>The strategy to boost photocatalytic activities towards CO₂ reduction and organic pollutants degradation is still a key challenge for novel Sillén-Aurivillius oxyhalides. In this work, a S-scheme heterojunction of Bi₂₄O₃₁Cl₁₀ and Bi₇Fe₂Ti₂O₁₇Cl is designed for CO₂ reduction and organic pollutants degradation. The as-synthesized 5% Bi₂₄O₃₁Cl₁₀/Bi₇Fe₂Ti₂O₁₇Cl (BOC/BFTOC-5) composites depicts an appealing CO₂ reduction and removal rate for RhB organic pollutants in comparison with pristine Bi₂₄O₃₁Cl₁₀ and Bi₇Fe₂Ti₂O₁₇Cl oxyhalides. This fascinating photocatalytic performance could be ascribed to the synergic effect of the enhanced visible light adsorption and photo-generated carriers separation derived from the Bi₂₄O₃₁Cl₁₀/Bi₇Fe₂Ti₂O₁₇Cl heterojunction. Simultaneously, the trapping experiments confirm that the main active species during the catalytic process are the photo-generated hole (h⁺) and the hydroxy free radical (·OH). This work aims at providing a S-scheme heterojunction via Bi-based oxyhalides for efficient photocatalytic activity.</p>","PeriodicalId":18277,"journal":{"name":"Materials Today Energy","volume":"7 1","pages":""},"PeriodicalIF":9.3,"publicationDate":"2024-01-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139464363","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}

{"title":"Improving the Ohmic polarization of high temperature proton exchange membrane fuel cells using crosslinked polybenzimidazole membranes containing acidophilic quaternary ammonium groups synthesized by one-step strategy","authors":"Jin Li, Guoliang Liu, Fangfang Zhang, Jun Liao, Haolin Tang, Haining Zhang","doi":"10.1016/j.mtener.2024.101499","DOIUrl":"https://doi.org/10.1016/j.mtener.2024.101499","url":null,"abstract":"<p>Ingenious crosslinked network structure in phosphoric acid doped polybenzimidazole membranes can mitigate the mutual restriction of proton conductivity and mechanical properties. However, the complicated synthesis of tailored macromolecular crosslinker and the time-consuming post-treatment hinder their practical application as high temperature proton exchange membranes. Herein, crosslinked polybenzimidazole membranes are synthesized using small molecular crosslinker containing acidophilic quaternary ammonium groups through a one-step crosslinking strategy. After doping with phosphoric acid, the quaternary ammonium-biphosphate ion-pair coordination and the crosslinked structure result in the improved anhydrous proton conductivity, oxidation stability, and mechanical strength of the formed membranes compared to sample without crosslinking structure. Membrane with the optimized degree of crosslinking exhibits an anhydrous conductivity of 72.27 mS cm^-1 at 160 °C with a tensile strength of 12.14 MPa. Benefiting from the crosslinked structure and high proton conductivity, the accordingly formed membrane electrode assembly possesses a high open circuit voltage of 1.01 V and the improved Ohmic polarization, delivering a peak power density of 0.66 W cm^-2 using hydrogen as fuel and air as oxidant.</p>","PeriodicalId":18277,"journal":{"name":"Materials Today Energy","volume":"41 1","pages":""},"PeriodicalIF":9.3,"publicationDate":"2024-01-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139422417","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}

{"title":"Carbon nanotube-bridged MXene nanoarchitectures decorated with ultrasmall Rh nanoparticles for efficient methanol oxidation","authors":"Yan Wang, Xiang Yang, Yike Zhang, Chi Zhang, Lu Yang, Quanguo Jiang, Haiyan He, Guobing Ying, Huajie Huang","doi":"10.1016/j.mtener.2024.101495","DOIUrl":"https://doi.org/10.1016/j.mtener.2024.101495","url":null,"abstract":"<p>Rational design and precise synthesis of cost-effective and highly-active Pt-alternative anode catalysts are important paths to accelerate the application and promotion of direct methanol fuel cell. Herein, a robust and controllable synthetic strategy is developed to the bottom-up construction of carbon nanotube-bridged Ti₃C₂T_x MXene nanoarchitectures decorated with ultrasmall Rh nanoparticles (Rh/CNT-MX) through a facile co-assembly process. The existence of MXene nanosheets with abundant anchoring sites can immobilize nanosized Rh crystals and facilitate their dispersion, while the integration of CNT skeletons effectively separates the neighboring MXene layers and offers unimpeded electron transport channels, which are conducive to making full use of respective catalytic functions for each component. As a consequence, the optimized Rh/CNT-MX catalyst expresses superior methanol oxidation performance with a considerable electrochemically active surface area of 89.4 m² g^-1, high mass/specific activity of 911.0 mA mg^-1/1.02 mA cm^-2, and reliable long-term durability, which has obvious competitive advantages over the conventional Rh/carbon black, Rh/CNT, Rh/MXene as well as commercial Pt/carbon black and Pd/carbon black catalysts.</p>","PeriodicalId":18277,"journal":{"name":"Materials Today Energy","volume":"256 1","pages":""},"PeriodicalIF":9.3,"publicationDate":"2024-01-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139409918","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}

{"title":"Human-friendly flexible solid-state biodegradable supercapacitor based on Ti3C2Tx MXene film without adhesive structure","authors":"Xiaofeng Zhang, Muhammad Sufyan Javed, Hongjia Ren, Xinze Zhang, Salamat Ali, Kaiming Han, Awais Ahmad, Ammar M. Tighezza, Weihua Han, Kui-Qing Peng","doi":"10.1016/j.mtener.2024.101496","DOIUrl":"https://doi.org/10.1016/j.mtener.2024.101496","url":null,"abstract":"<p>With the rapid development of biomedical technology, biodegradable and implantable energy storage devices for biosensor and bioelectronics applications have attracted the great attention of scientists. However, the limited energy density, poor biocompatibility and excessive space occupation of existing biodegradable energy storage devices pose major challenges to their application in the biomedical field. To address these challenges, in this work, flexible Ti₃C₂T_<em>x</em> film with an adhesive-free structure constructed is proposed as electrode material for the flexible solid-state biodegradable supercapacitor (FSBSC). The morphology and structure of MXene films were characterized by XRD, XPS, Raman, SEM and TEM. A 0.9% NaCl saline, similar human body fluids was used as the electrolyte solution to construct symmetrical FSBSC (Ti₃C₂T_<em>x</em>//NaCl-PVA//Ti₃C₂T_<em>x</em>-FSBSC). The Ti₃C₂T_<em>x</em>//NaCl-PVA//Ti₃C₂T_<em>x</em>-FSBSC exhibits a high capacitance of 112 F/g at 1 A/g, excellent rate capability (73.2% at 20 A/g), long lifetime (81.6 % after 10,000 cycles), and high specific energy/power (62.3 Wh/kg at 1,000.8 W/kg). The charge storage mechanism was analyzed using ex-situ XRD, XPS and density function theory (DFT). DFT results show that the Ti₃C₂T_<em>x</em> (T_<em>x</em> = O)) electrode possesses metallic properties. The calculated adsorption energies (<em>E</em>_ads) and smaller diffusion barriers of Na⁺-ions further proved the outstanding performance of the Ti₃C₂T_<em>x</em> electrode. Moreover, the apparatus is entirely biodegradable, thereby paving a promising path for the progression of bioelectronics and biomedical energy storage technologies.</p>","PeriodicalId":18277,"journal":{"name":"Materials Today Energy","volume":"16 1","pages":""},"PeriodicalIF":9.3,"publicationDate":"2024-01-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139410025","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}

{"title":"Enhancing Lithium-Sulfur Battery Performance through Electronic/Ionic Co-Conductive MWCNTs/LLTO Separator Modification","authors":"Shanshan Liang, Susana Chauque, Marco Ricci, Remo Proietti Zaccaria","doi":"10.1016/j.mtener.2024.101497","DOIUrl":"https://doi.org/10.1016/j.mtener.2024.101497","url":null,"abstract":"<p>As one of the most promising energy storage devices, Lithium-sulfur batteries (LSBs or Li-S batteries) are still facing obstacles due to the notorious shuttling of soluble polysulfide intermediates, accompanied by low S utilization, corrosion of the lithium anode, and rapid capacity fading leading to a short cycling life. To overcome these issues and achieve high-performance LSBs, we introduce a modified separator composed of multi-walled carbon nanotubes/lithium lanthanum titanium oxide (MWCNTs/LLTO). The proposed MWCNTs/LLTO-modified separator improves the redox reaction kinetics from soluble higher-order lithium polysulfides to the insoluble lower-order ones and ultimately to Li₂S, thereby reducing the polysulfides dissolved in the electrolyte. It also serves as a physical barrier to adsorb polysulfides, efficiently preventing their diffusion from the cathode to the anode. LSBs adopting the MWCNTs/LLTO-modified separator exhibit higher ionic and electronic conductivity than the un-modified counterparts, leading to an initial specific capacity of 1496 mA h g⁻¹ (∼90% of the theoretical capacity) at 0.1C, an excellent rate capability performance, and a remarkable capacity retention of 80% after 200 cycles. Furthermore, the cells with S loading reaching up to 4.18 mg cm^-2 further confirmed the beneficial impact of the MWCNTs/LLTO-modified separator.</p>","PeriodicalId":18277,"journal":{"name":"Materials Today Energy","volume":"23 1","pages":""},"PeriodicalIF":9.3,"publicationDate":"2024-01-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139410289","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}

{"title":"PdOs bimetallene for energy-saving hydrogen production coupled with ethanol electro-oxidation","authors":"Ziqiang Wang, Min Li, Shan Xu, Hongjie Ye, Kai Deng, You Xu, Hongjing Wang, Liang Wang","doi":"10.1016/j.mtener.2024.101493","DOIUrl":"https://doi.org/10.1016/j.mtener.2024.101493","url":null,"abstract":"<p>The replacement of sluggish oxygen evolution reaction by more thermodynamically favorable ethanol oxidation reaction (EOR) is a promising strategy for co-production of hydrogen and valuable chemicals in energy-saving mode. Here, we propose the synthesis of highly curved PdOs bimetallene, which possesses high active sites atomic utilization and conductivity. Furthermore, alloy effect can regulate electronic structure and optimize adsorption energy of reactants. Therefore, PdOs bimetallene exhibits superior performance for hydrogen evolution reaction (HER) and EOR under basic solutions, with overpotential of 36 mV at 10 mA cm^-2 and mass activity of 1.51 mA μg^-1_Pd, respectively. In the EOR-HER co-electrolysis system, PdOs bimetallene requires low voltage of 0.801 V for concurrent production of hydrogen and acetate at 50 mA cm⁻², which greatly reduces energy consumption compared to conventional water electrolysis (1.976 V). This method provides a promising strategy for designing bimetallic electrocatalysts towards simultaneous energy-saving generation of hydrogen and high-value chemicals by replacing sluggish OER with more favorable ethanol oxidation reaction.</p>","PeriodicalId":18277,"journal":{"name":"Materials Today Energy","volume":"72 1","pages":""},"PeriodicalIF":9.3,"publicationDate":"2024-01-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139375643","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}

{"title":"Recent Strategies for Improving the Catalytic Activity of Ultrathin Transition Metal Sulfide Nanosheets Toward the Oxygen Evolution Reaction","authors":"Wenda Ma, Yan Dong, Jihong Li, Yang Wang, Tongzhou Wang, Xuerong Zheng, Yida Deng","doi":"10.1016/j.mtener.2024.101492","DOIUrl":"https://doi.org/10.1016/j.mtener.2024.101492","url":null,"abstract":"<p>Hydrogen is considered as one of the clean secondary energy sources required in industry and daily life. Electrocatalytic hydrogen production is believed to be the most reliable method for converting renewable energy into chemical energy. Two-dimensional (2D) transition metal disulfides (TMDs), as an emerging electrocatalysts, have been widely investigated for oxygen evolution reaction (OER) in water splitting. Herein, this review summarizes the recent progress and the strategies of ultrathin TMDs for improving the OER electrocatalytic activities. The basic catalytic mechanism of OER is first introduced, and then the catalytic characteristics of 2D TMDs are presented. Importantly, this review specifically concentrates on strategies to improve catalytic activity such as phase engineering, defect/vacancy engineering, heterostructure, doping effect, and catalyst support material. It can be concluded that these regulatory strategies can largely enhance the electrocatalytic performance by increasing the active site exposure and improving the electrocatalytic kinetics. In addition, the challenges and perspectives of 2D TMDs catalysts are presented, which offers valuable guidance in designing efficient and low-cost OER electrocatalysts for future energy applications. We hope that this review will inspire future studies and bridge the gap between strategy design and practical application.</p>","PeriodicalId":18277,"journal":{"name":"Materials Today Energy","volume":"142 1","pages":""},"PeriodicalIF":9.3,"publicationDate":"2024-01-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139375687","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}

{"title":"In-situ formation of low valence state cobalt cation in octahedral sites of Co9S8 for highly efficient electrocatalytic hydrogen evolution","authors":"Bin Tian, Pohlee Cheah, Jing Qu, Fengxiang Han, Xianchun Zhu, Yongfeng Zhao","doi":"10.1016/j.mtener.2024.101494","DOIUrl":"https://doi.org/10.1016/j.mtener.2024.101494","url":null,"abstract":"<p>The elementary valence state in electrocatalysts has been demonstrated to significantly affect their catalytic ability. However, enhancing performance by controlling the elemental valence state and the precise doping location remains challenging. This work is devoted to exploring a controllable electronic structure that is capable of improving electrocatalytic hydrogen evolution activity by manipulating the valence state of an element at a specific location. This is demonstrated by reducing the high valence state Co³⁺ in octahedral sites of Co₉S₈ to form low valence state Co²⁺ using sodium borohydride. The occupation of Co²⁺ in the Co³⁺ site gives rise to the generation of local lattice distortion, which provides more efficient active sites for the hydrogen evolution reaction (HER). Additionally, Co²⁺ in octahedral sites donates more electrons to adsorbed water molecules, which facilitates O-H dissociation and H* adsorption. The resulting electrocatalyst exhibits a low overpotential of 301 mV at 500 mA cm^-2 for the HER, which is the best performance among all reported single-component Co₉S₈-based catalysts. This work paves an avenue for the rational design of HER electrocatalysts by precisely tuning the valence state of elements at specific locations.</p>","PeriodicalId":18277,"journal":{"name":"Materials Today Energy","volume":"60 1","pages":""},"PeriodicalIF":9.3,"publicationDate":"2024-01-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139102762","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}

{"title":"Bifunctional Separator with Nest-like MnOOH Network via Facile In-situ Synthesis for Highly Stable and “Li-dendrite free” Lithium-sulfur Batteries","authors":"Linghao Sun, Hehong Li, Junli Zhou, Zhonghui Wu, Ruanming Liao, Zhihong Peng, Lin Yu, Qianyu Zhang","doi":"10.1016/j.mtener.2024.101489","DOIUrl":"https://doi.org/10.1016/j.mtener.2024.101489","url":null,"abstract":"<p>The slow redox kinetics in the sulfur cathode and lithium (Li)-dendrite growth on the lithium anode leads to significant capacity degradation and serious safety incidents for lithium-sulfur (Li-S) batteries. Herein, a bifunctional polypropylene separator with nest-like MnOOH network synergistic carbon layer (MnOOH/C/PP) via facile in-situ synthesis method was designed as an effective host for both sulfur cathode and lithium anode. A series of electrochemical tests and non-in situ SEM characterization confirmed that the as-prepared MnOOH/C layer has good physical/chemical adsorption and catalytic activity of polysulfides. Furthermore, the Li||Li symmetric batteries exhibited inhibited dendrite growth even after undergoing cycling for more than 2200 h at 1 mA cm^-2. Consequently, the Li-S battery based on a functional MnOOH/C/PP separator shows high discharge capacity (1358 mAh g^-1 at 0.1 C), good rate capability (755 mAh g^-1 at 3 C) and stable cyclability (0.049% decay per cycle over 700 cycles). Particularly, an areal capacity can reach 3.55 mA h cm^-2 even at a high sulfur loading of 7.02 mg cm^-2 and a high-capacity retention rate of 90.2% remained over 200 cycles, demonstrating the viability of this simple and efficient strategy for creating highly stable and safe Li-S batteries.</p>","PeriodicalId":18277,"journal":{"name":"Materials Today Energy","volume":"35 1","pages":""},"PeriodicalIF":9.3,"publicationDate":"2024-01-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139095811","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}