Journal of Energy Chemistry最新文献

{"title":"N-doped porous graphite with multilevel pore defects and ultra-high conductivity anchoring Pt nanoparticles for proton exchange membrane water electrolyzers","authors":"Yu Hao ,&nbsp;Dongfang Chen ,&nbsp;Guangxin Yang ,&nbsp;Song Hu ,&nbsp;Shunyu Wang ,&nbsp;Pucheng Pei ,&nbsp;Jinkai Hao ,&nbsp;Xiaoming Xu","doi":"10.1016/j.jechem.2024.10.041","DOIUrl":"10.1016/j.jechem.2024.10.041","url":null,"abstract":"<div><div>Water electrolysis for hydrogen production offers a promising solution to future energy crises and environmental challenges. Although platinum is an efficient catalyst for hydrogen evolution reactions (HERs), its high cost and stability challenges limit its widespread use. A novel platinum-based catalyst, comprising platinum nanoparticles on nitrogen-doped porous graphite (Pt-N-porous graphite), addresses these limitations. This catalyst prevents nanoparticle aggregation, provides a high specific surface area of 1308 m² g⁻¹, and enhances mass transfer and active site exposure. Additionally, it exhibits superior electrical conductivity compared to commercial Pt-C, enhancing charge transfer efficiency. The Pt-N-porous graphite catalyst achieves an overpotential of 99 mV at 100 mA cm⁻² and maintains stable performance after 10,000 cycles. Applied as a catalyst-coated membrane (CCM) in a proton exchange membrane (PEM) electrolyzer, it demonstrates excellent performance. Thus, the industrially synthesizable Pt-N-porous graphite catalyst holds great potential for large-scale energy applications.</div></div>","PeriodicalId":15728,"journal":{"name":"Journal of Energy Chemistry","volume":"102 ","pages":"Pages 290-301"},"PeriodicalIF":13.1,"publicationDate":"2024-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142701604","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Vapor-phase conversion of waste silicon powders to silicon nanowires for ultrahigh and ultra-stable energy storage performance","authors":"Hao Li ,&nbsp;Qiushi Chen ,&nbsp;Lili Feng ,&nbsp;Yueling Zou ,&nbsp;Xuzhong Gong ,&nbsp;Zhi Wang ,&nbsp;Junhao Liu","doi":"10.1016/j.jechem.2024.10.039","DOIUrl":"10.1016/j.jechem.2024.10.039","url":null,"abstract":"<div><div>Silicon nanowires (SiNWs) have been used in a wide variety of applications over the past few decades due to their excellent material properties. The only drawback is the high production cost of SiNWs. The preparation of SiNWs from photovoltaic waste silicon (WSi) powders, which are high-volume industrial wastes, not only avoids the secondary energy consumption and environmental pollution caused by complicated recycling methods, but also realizes its high-value utilization. Herein, we present a method to rapidly convert photovoltaic WSi powders into SiNWs products. The flash heating and quenching provided by carbothermal shock induce the production of free silicon atoms from the WSi powders, which are rapidly reorganized and assembled into SiNWs during the vapor-phase process. This method allows for the one-step composite of SiNWs and carbon cloth (CC) and the formation of SiC at the interface of the silicon (Si) and carbon (C) contact to create a stable chemical connection. The obtained SiNWs-CC (SiNWs@CC) composites can be directly used as lithium anodes, exhibiting high initial coulombic efficiency (86.4%) and stable cycling specific capacity (2437.4 mA h g⁻¹ at 0.5 A g⁻¹ after 165 cycles). In addition, various SiNWs@C composite electrodes are easily prepared using this method.</div></div>","PeriodicalId":15728,"journal":{"name":"Journal of Energy Chemistry","volume":"102 ","pages":"Pages 27-36"},"PeriodicalIF":13.1,"publicationDate":"2024-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142701637","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Breaking boundaries in O3-type NaNi1/3Fe1/3Mn1/3O2 cathode materials for sodium-ion batteries: An industrially scalable reheating strategy for superior electrochemical performance","authors":"Manman Chen ,&nbsp;Cai Zhao ,&nbsp;Yan Li ,&nbsp;Hui Wang ,&nbsp;Kaihang Wang ,&nbsp;Shengchen Yang ,&nbsp;Yue Gao ,&nbsp;Wenjuan Zhang ,&nbsp;Chun Chen ,&nbsp;Tao Zhang ,&nbsp;Lei Wen ,&nbsp;Kehua Dai ,&nbsp;Jing Mao","doi":"10.1016/j.jechem.2024.10.038","DOIUrl":"10.1016/j.jechem.2024.10.038","url":null,"abstract":"<div><div>To address the challenges of air stability and slurry processability in layered transition metal oxide O3-type NaNi_1/3Fe_1/3Mn_1/3O₂ (NFM) for sodium-ion batteries (SIBs), we have designed an innovative 500 °C reheating strategy. This method improves the surface properties of NFM without the need for additional coating layers, making it more efficient and suitable for large-scale applications. Pristine NFM (NFM-P) was first synthesized through a high-temperature solid-state method and then modified using this reheating approach (NFM-HT). This strategy significantly enhances air stability and electrochemical performance, yielding an initial discharge specific capacity of 151.46 mAh/g at 0.1C, with a remarkable capacity retention of 95.04% after 100 cycles at 0.5C. Additionally, a 1.7 Ah NFM||HC (hard carbon) pouch cell demonstrates excellent long-term cycling stability (94.64% retention after 500 cycles at 1C), superior rate capability (86.48% retention at 9C), and strong low-temperature performance (77% retention at − 25 °C, continuing power supply at − 40 °C). Notably, even when overcharged to 8.29 V, the pouch cell remained safe without combustion or explosion. This reheating strategy, which eliminates the need for a coating layer, offers a simpler, more scalable solution for industrial production while maintaining outstanding electrochemical performance. These results pave the way for broader commercial adoption of NFM materials.</div></div>","PeriodicalId":15728,"journal":{"name":"Journal of Energy Chemistry","volume":"102 ","pages":"Pages 107-119"},"PeriodicalIF":13.1,"publicationDate":"2024-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142701645","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Inhibiting irreversible Zn2+/H+ co-insertion chemistry in aqueous zinc-MoOx batteries for enhanced capacity stability","authors":"Chen Zheng ,&nbsp;Xinwei Guan ,&nbsp;Zihang Huang ,&nbsp;Shuai Mao ,&nbsp;Xu Han ,&nbsp;Xiaoguang Duan ,&nbsp;Hui Li ,&nbsp;Tianyi Ma","doi":"10.1016/j.jechem.2024.10.034","DOIUrl":"10.1016/j.jechem.2024.10.034","url":null,"abstract":"<div><div>Rechargeable aqueous Zn-MoO<em>_x</em> batteries are promising energy storage devices with high theoretical specific capacity and low cost. However, MoO₃ cathodes suffer drastic capacity decay during the initial discharging/charging process in conventional electrolytes, resulting in a short cycle life and challenging the development of Zn-MoO<em>_x</em> batteries. Here we comprehensively investigate the dissolution mechanism of MoO₃ cathodes and innovatively introduce a polymer to inhibit the irreversible processes. Our findings reveal that this capacity decay originates from the irreversible Zn²⁺/H⁺ co-intercalation/extraction process in aqueous electrolytes. Even worse, during Zn²⁺ intercalation, the formed Zn<em>_x</em>MoO₃₋<em>_x</em> intermediate phase with lower valence states (Mo⁵⁺/Mo⁴⁺) experiences severe dissolution in aqueous environments. To address these challenges, we developed a first instance of coating a polyaniline (PANI) shell around the MoO₃ nanorod effectively inhibiting these irreversible processes and protecting structural integrity during long-term cycling. Detailed structural analysis and theoretical calculations indicate that =N– groups in PANI@MoO₃₋<em>_x</em> simultaneously weaken H⁺ adsorption and enhance Zn²⁺ adsorption, which endowed the PANI@MoO₃₋<em>_x</em> cathode with reversible Zn²⁺/H⁺ intercalation/extraction. Consequently, the obtained PANI@MoO₃₋<em>_x</em> cathode delivers an excellent discharge capacity of 316.86 mA h g⁻¹ at 0.1 A g⁻¹ and prolonged cycling stability of 75.49% capacity retention after 1000 cycles at 5 A g⁻¹. This work addresses the critical issues associated with MoO₃ cathodes and significantly advances the understanding of competitive multi-ion energy storage mechanisms in aqueous Zn-MoO₃ batteries.</div></div>","PeriodicalId":15728,"journal":{"name":"Journal of Energy Chemistry","volume":"102 ","pages":"Pages 98-106"},"PeriodicalIF":13.1,"publicationDate":"2024-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142701644","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Machine learning approaches for predicting impact sensitivity and detonation performances of energetic materials","authors":"Wei-Hong Liu ,&nbsp;Qi-Jun Liu ,&nbsp;Fu-Sheng Liu ,&nbsp;Zheng-Tang Liu","doi":"10.1016/j.jechem.2024.10.035","DOIUrl":"10.1016/j.jechem.2024.10.035","url":null,"abstract":"<div><div>Excellent detonation performances and low sensitivity are prerequisites for the deployment of energetic materials. Exploring the underlying factors that affect impact sensitivity and detonation performances as well as exploring how to obtain materials with desired properties remains a long-term challenge. Machine learning with its ability to solve complex tasks and perform robust data processing can reveal the relationship between performance and descriptive indicators, potentially accelerating the development process of energetic materials. In this background, impact sensitivity, detonation performances, and 28 physicochemical parameters for 222 energetic materials from density functional theory calculations and published literature were sorted out. Four machine learning algorithms were employed to predict various properties of energetic materials, including impact sensitivity, detonation velocity, detonation pressure, and Gurney energy. Analysis of Pearson coefficients and feature importance showed that the heat of explosion, oxygen balance, decomposition products, and HOMO energy levels have a strong correlation with the impact sensitivity of energetic materials. Oxygen balance, decomposition products, and density have a strong correlation with detonation performances. Utilizing impact sensitivity of 2,3,4-trinitrotoluene and the detonation performances of 2,4,6-trinitrobenzene-1,3,5-triamine as the benchmark, the analysis of feature importance rankings and statistical data revealed the optimal range of key features balancing impact sensitivity and detonation performances: oxygen balance values should be between −40% and −30%, density should range from 1.66 to 1.72 g/cm³, HOMO energy levels should be between −6.34 and −6.31 eV, and lipophilicity should be between −1.0 and 0.1, 4.49 and 5.59. These findings not only offer important insights into the impact sensitivity and detonation performances of energetic materials, but also provide a theoretical guidance paradigm for the design and development of new energetic materials with optimal detonation performances and reduced sensitivity.</div></div>","PeriodicalId":15728,"journal":{"name":"Journal of Energy Chemistry","volume":"102 ","pages":"Pages 161-171"},"PeriodicalIF":13.1,"publicationDate":"2024-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142701587","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Deep level defect passivation for printable mesoporous CsSnI3 perovskite solar cells with efficiency above 10%","authors":"Haixuan Yu ,&nbsp;Zhiguo Zhang ,&nbsp;Huaxia Ban ,&nbsp;Xiongjie Li ,&nbsp;Zhirong Liu ,&nbsp;Junyi Huang ,&nbsp;Wanpeng Yang ,&nbsp;Yan Shen ,&nbsp;Mingkui Wang","doi":"10.1016/j.jechem.2024.10.033","DOIUrl":"10.1016/j.jechem.2024.10.033","url":null,"abstract":"<div><div>The lead-free inorganic perovskite CsSnI₃ is considered as one of the best candidates for emerging photovoltaics. Nevertheless, CsSnI₃-based perovskite solar cells experience a significant drop in performance due to the nonradiative recombination facilitated by trapping. Here, we show an electron donor passivation method to regulate deep-level defects for CsSnI₃ perovskite with electron donor pyrrole. Experimental observations combined with theoretical simulations verify that the saturation of Tin dangling bonds with pyrrole on the CsSnI₃ surface via a Lewis acid-base addition reaction can significantly reduce the density of deep-level defects. Consequently, the printable mesoporous perovskite solar cells with an FTO/compact-TiO₂/mesoporous-TiO₂/Al₂O₃/NiO/carbon framework device structure penetrated with CsSnI₃ achieve a power conversion efficiency of up to 10.11%. To our knowledge, this represents the highest efficiency reported to date for lead-free perovskite-based printable mesoporous solar cells. Furthermore, the unencapsulated devices demonstrated remarkable long-term stability, retaining 92% of their initial efficiency even after 2400 h of aging in a nitrogen atmosphere.</div></div>","PeriodicalId":15728,"journal":{"name":"Journal of Energy Chemistry","volume":"102 ","pages":"Pages 10-17"},"PeriodicalIF":13.1,"publicationDate":"2024-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142701755","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Unveiling hidden biases in machine learning feature importance","authors":"Yoshiyasu Takefuji","doi":"10.1016/j.jechem.2024.10.032","DOIUrl":"10.1016/j.jechem.2024.10.032","url":null,"abstract":"","PeriodicalId":15728,"journal":{"name":"Journal of Energy Chemistry","volume":"102 ","pages":"Pages 49-51"},"PeriodicalIF":13.1,"publicationDate":"2024-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142701639","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Photothermally enhanced electrocatalytic water splitting with iron-doped nickel phosphide","authors":"Rui Zhao,&nbsp;Chunyang Zhang,&nbsp;Liting Wei,&nbsp;Yan Zhang,&nbsp;Daixing Wei,&nbsp;Jinzhan Su,&nbsp;Liejin Guo","doi":"10.1016/j.jechem.2024.10.030","DOIUrl":"10.1016/j.jechem.2024.10.030","url":null,"abstract":"<div><div>Although electrocatalytic water splitting holds significant promise for hydrogen production, unfavorable reaction energy barriers and kinetic properties lead to unsatisfactory conversion efficiency. Herein, we provide an innovative strategy to optimize the electrochemical activity of the Fe/Ni₂P catalyst through near-infrared (NIR)-induced photothermal effect. The Fe/Ni₂P-NIR yields a current density of 10 mA cm⁻² at ultralow overpotentials of 16 mV for the hydrogen evolution reaction (HER) and 167 mV for the oxygen evolution reaction (OER), with Tafel slopes of 38.7 and 46.2 mV dec⁻¹, respectively. This bifunctional catalyst also delivers 10 mA cm⁻² at a low voltage of 1.40 V for overall water splitting. The NIR photoinduced local thermal effect activates abundant catalytic sites, accelerates charge and mass transfer, and improves intrinsic reaction kinetics. Guided by density functional theory (DFT) calculations, the photothermal effect reduces the energy barriers of the rate-determining steps (RDS) for *H desorption on Fe/Ni₂P during HER and *O formation on its reconstructed active phase NiFeOOH during OER. We realized photothermal-electrochemical integration with Fe/Ni₂P-NIR in an anion exchange membrane (AEM) electrolyzer, attaining 500 mA cm⁻² at 1.76 V, with excellent stability over 50 h. This strategy may significantly advance energy conversion technology towards economic hydrogen production through water electrolysis.</div></div>","PeriodicalId":15728,"journal":{"name":"Journal of Energy Chemistry","volume":"102 ","pages":"Pages 243-252"},"PeriodicalIF":13.1,"publicationDate":"2024-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142701769","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Enhancing H+ intercalation kinetics and stability in Cu2+ pre-intercalated δ-MnO2 for aqueous aluminum batteries","authors":"Hanqing Gu ,&nbsp;Mingjun Chen ,&nbsp;Zhibao Wang,&nbsp;Wenming Zhang,&nbsp;Zhanyu Li","doi":"10.1016/j.jechem.2024.10.031","DOIUrl":"10.1016/j.jechem.2024.10.031","url":null,"abstract":"<div><div>Aqueous aluminum ion batteries (AAIBs) have garnered extensive attention due to their environmental friendliness, high theoretical capacity, and low cost. However, the sluggish reaction kinetics and severe structural collapse of the cathode material, especially manganese oxide, during the cycling process have hindered its further application. Herein, Cu²⁺ pre-intercalated layered <em>δ</em>-MnO₂ was synthesized via a hydrothermal method. The pre-intercalated Cu²⁺ ions not only improve the conductivity of MnO₂ cathode but also stabilize the structure to enhance stability. X-ray absorption fine structure (XAFS) combined with density functional theory (DFT) calculations confirm the formation of the covalent bond between Cu and O, increasing the electronegativity of O atoms and enhancing the H⁺ adsorption energy. Moreover, ex-situ measurements not only elucidate the Al³⁺/H⁺ co-insertion energy storage mechanism but also demonstrate the high reversibility of the Cu-MnO₂ cathode during cycling. This work provides a promising modification approach for the application of manganese oxides in AAIBs.</div></div>","PeriodicalId":15728,"journal":{"name":"Journal of Energy Chemistry","volume":"102 ","pages":"Pages 126-133"},"PeriodicalIF":13.1,"publicationDate":"2024-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142701641","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Thermal hazard comparison and assessment of Li-ion battery and Na-ion battery","authors":"Wenxin Mei,&nbsp;Zhixiang Cheng,&nbsp;Longbao Wang,&nbsp;Anqi Teng,&nbsp;Zhiyuan Li,&nbsp;Kaiqiang Jin,&nbsp;Jinhua Sun,&nbsp;Qingsong Wang","doi":"10.1016/j.jechem.2024.10.036","DOIUrl":"10.1016/j.jechem.2024.10.036","url":null,"abstract":"<div><div>Na-ion batteries are considered a promising next-generation battery alternative to Li-ion batteries, due to the abundant Na resources and low cost. Most efforts focus on developing new materials to enhance energy density and electrochemical performance to enable it comparable to Li-ion batteries, without considering thermal hazard of Na-ion batteries and comparison with Li-ion batteries. To address this issue, our work comprehensively compares commercial prismatic lithium iron phosphate (LFP) battery, lithium nickel cobalt manganese oxide (NCM523) battery and Na-ion battery of the same size from thermal hazard perspective using Accelerating Rate Calorimeter. The thermal hazard of the three cells is then qualitatively assessed from thermal stability, early warning and thermal runaway severity perspectives by integrating eight characteristic parameters. The Na-ion cell displays comparable thermal stability with LFP while LFP exhibits the lowest thermal runaway hazard and severity. However, the Na-ion cell displays the lowest safety venting temperature and the longest time interval between safety venting and thermal runaway, allowing the generated gas to be released as early as possible and detected in a timely manner, providing sufficient time for early warning. Finally, a database of thermal runaway characteristic temperature for Li-ion and Na-ion cells is collected and processed to delineate four thermal hazard levels for quantitative assessment. Overall, LFP cells exhibit the lowest thermal hazard, followed by the Na-ion cells and NCM523 cells. This work clarifies the thermal hazard discrepancy between the Na-ion cell and prevalent Li-ion cells, providing crucial guidance for development and application of Na-ion cell.</div></div>","PeriodicalId":15728,"journal":{"name":"Journal of Energy Chemistry","volume":"102 ","pages":"Pages 18-26"},"PeriodicalIF":13.1,"publicationDate":"2024-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142701636","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}