能源化学最新文献

{"title":"Buried interface management via bifunctional NH4BF4 towards efficient CsPbI2Br solar cells with a Voc over 1.4 V","authors":"Fazheng Qiu ,&nbsp;Ming-Hua Li ,&nbsp;Jinpeng Wu ,&nbsp;Jin-Song Hu","doi":"10.1016/j.jechem.2023.10.053","DOIUrl":"10.1016/j.jechem.2023.10.053","url":null,"abstract":"<div><p>CsPbI₂Br perovskite solar cells (PSCs) have drawn tremendous attention due to their suitable bandgap, excellent photothermal stability, and great potential as an ideal candidate for top cells in tandem solar cells. However, the abundant defects at the buried interface and perovskite layer induce severe charge recombination, resulting in the open-circuit voltage (<em>V</em>_oc) output and stability much lower than anticipated. Herein, a novel buried interface management strategy is developed to regulate interfacial carrier dynamics and CsPbI₂Br defects by introducing ammonium tetrafluoroborate (NH₄BF₄), thereby resulting in both high CsPbI₂Br crystallization and minimized interfacial energy losses. Specifically, NH₄⁺ ions could preferentially heal hydroxyl groups on the SnO₂ surface and balance energy level alignment between SnO₂ and CsPbI₂Br, enhancing charge transport efficiency, while BF₄⁻ anions as a quasi-halogen regulate crystal growth of CsPbI₂Br, thus reducing perovskite defects. Additionally, it is proved that eliminating hydroxyl groups at the buried interface enhances the iodide migration activation energy of CsPbI₂Br for strengthening the phase stability. As a result, the optimized CsPbI₂Br PSCs realize a remarkable efficiency of 17.09% and an ultrahigh <em>V</em>_oc output of 1.43 V, which is one of the highest values for CsPbI₂Br PSCs.</p></div>","PeriodicalId":67498,"journal":{"name":"能源化学","volume":"89 ","pages":"Pages 364-370"},"PeriodicalIF":13.1,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135566229","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":"Heat transfer enhanced inorganic phase change material compositing carbon nanotubes for battery thermal management and thermal runaway propagation mitigation","authors":"Xinyi Dai ,&nbsp;Ping Ping ,&nbsp;Depeng Kong ,&nbsp;Xinzeng Gao ,&nbsp;Yue Zhang ,&nbsp;Gongquan Wang ,&nbsp;Rongqi Peng","doi":"10.1016/j.jechem.2023.10.001","DOIUrl":"10.1016/j.jechem.2023.10.001","url":null,"abstract":"<div><p>Developing technologies that can be applied simultaneously in battery thermal management (BTM) and thermal runaway (TR) mitigation is significant to improving the safety of lithium-ion battery systems. Inorganic phase change material (PCM) with nonflammability has the potential to achieve this dual function. This study proposed an encapsulated inorganic phase change material (EPCM) with a heat transfer enhancement for battery systems, where Na₂HPO₄∙12H₂O was used as the core PCM encapsulated by silica and the additive of carbon nanotube (CNT) was applied to enhance the thermal conductivity. The microstructure and thermal properties of the EPCM/CNT were analyzed by a series of characterization tests. Two different incorporating methods of CNT were compared and the proper CNT adding amount was also studied. After preparation, the battery thermal management performance and TR propagation mitigation effects of EPCM/CNT were further investigated on the battery modules. The experimental results of thermal management tests showed that EPCM/CNT not only slowed down the temperature rising of the module but also improved the temperature uniformity during normal operation. The peak battery temperature decreased from 76 °C to 61.2 °C at 2 C discharge rate and the temperature difference was controlled below 3 °C. Moreover, the results of TR propagation tests demonstrated that nonflammable EPCM/CNT with good heat absorption could work as a TR barrier, which exhibited effective mitigation on TR and TR propagation. The trigger time of three cells was successfully delayed by 129, 474 and 551 s, respectively and the propagation intervals were greatly extended as well.</p></div>","PeriodicalId":67498,"journal":{"name":"能源化学","volume":"89 ","pages":"Pages 226-238"},"PeriodicalIF":13.1,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135661556","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 BiVO4 photoanode performance by insertion of an epitaxial BiFeO3 ferroelectric layer","authors":"Haejin Jang ,&nbsp;Yejoon Kim ,&nbsp;Hojoong Choi ,&nbsp;Jiwoong Yang ,&nbsp;Yoonsung Jung ,&nbsp;Sungkyun Choi ,&nbsp;Donghyeon Lee ,&nbsp;Ho Won Jang ,&nbsp;Sanghan Lee","doi":"10.1016/j.jechem.2023.10.041","DOIUrl":"10.1016/j.jechem.2023.10.041","url":null,"abstract":"<div><p>BiVO₄ (BVO) is a promising material as the photoanode for use in photoelectrochemical applications. However, the high charge recombination and slow charge transfer of the BVO have been obstacles to achieving satisfactory photoelectrochemical performance. To address this, various modifications have been attempted, including the use of ferroelectric materials. Ferroelectric materials can form a permanent polarization within the layer, enhancing the separation and transport of photo-excited electron-hole pairs. In this study, we propose a novel approach by depositing an epitaxial BiFeO₃ (BFO) thin film underneath the BVO thin film (BVO/BFO) to harness the ferroelectric property of BFO. The self-polarization of the inserted BFO thin film simultaneously functions as a buffer layer to enhance charge transport and a hole-blocking layer to reduce charge recombination. As a result, the BVO/BFO photoanodes showed more than 3.5 times higher photocurrent density (0.65 mA cm⁻²) at 1.23 V_RHE under the illumination compared to the bare BVO photoanodes (0.18 mA cm⁻²), which is consistent with the increase of the applied bias photon-to-current conversion efficiencies (ABPE) and the result of electrochemical impedance spectroscopy (EIS) analysis. These results can be attributed to the self-polarization exhibited by the inserted BFO thin film, which promoted the charge separation and transfer efficiency of the BVO photoanodes.</p></div>","PeriodicalId":67498,"journal":{"name":"能源化学","volume":"89 ","pages":"Pages 71-78"},"PeriodicalIF":0.0,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135510409","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":"In-situ coating and surface partial protonation co-promoting performance of single-crystal nickel-rich cathode in all-solid-state batteries","authors":"Maoyi Yi ,&nbsp;Jie Li ,&nbsp;Mengran Wang ,&nbsp;Xinming Fan ,&nbsp;Bo Hong ,&nbsp;Zhian Zhang ,&nbsp;Aonan Wang ,&nbsp;Yanqing Lai","doi":"10.1016/j.jechem.2023.09.046","DOIUrl":"10.1016/j.jechem.2023.09.046","url":null,"abstract":"<div><p>The poor electrochemical performance of all-solid-state batteries (ASSBs), which is assemblied by Ni-rich cathode and poly(ethylene oxide) (PEO)-based electrolytes, can be attributed to unstable cathodic interface and poor crystal structure stability of Ni-rich cathode. Several coating strategies are previously employed to enhance the stability of the cathodic interface and crystal structure for Ni-rich cathode. However, these methods can hardly achieve simplicity and high efficiency simultaneously. In this work, polyacrylic acid (PAA) replaced traditional PVDF as a binder for cathode, which can achieve a uniform PAA-Li (Li<em>_x</em>PAA (0 &lt; <em>x</em> ≤ 1)) coating layer on the surface of single-crystal LiNi_0.83Co_0.12Mn_0.05O₂ (SC-NCM83) due to H⁺/Li⁺ exchange reaction during the initial charging-discharging process. The formation of PAA-Li coating layer on cathode can promote interfacial Li⁺ transport and enhance the stability of the cathodic interface. Furthermore, the partially-protonated surface of SC-NCM83 casued by H⁺/Li⁺ exchange reaction can restrict Ni ions transport to enhance the crystal structure stability. The proposed SC-NCM83-PAA exhibits superior cycling performance with a retention of 92% compared with that (57.3%) of SC-NCM83-polyvinylidene difluoride (PVDF) after 200 cycles. This work provides a practical strategy to construct high-performance cathodes for ASSBs.</p></div>","PeriodicalId":67498,"journal":{"name":"能源化学","volume":"89 ","pages":"Pages 137-143"},"PeriodicalIF":13.1,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135761814","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":"Lithium-ion and solvent co-intercalation enhancing the energy density of fluorinated graphene cathode","authors":"Hao Wang ,&nbsp;Jie Jiang ,&nbsp;Pengyu Chen ,&nbsp;Zhenrui Wu ,&nbsp;Xiaobin Niu ,&nbsp;Chuying Ouyang ,&nbsp;Jian Liu ,&nbsp;Liping Wang","doi":"10.1016/j.jechem.2023.10.019","DOIUrl":"10.1016/j.jechem.2023.10.019","url":null,"abstract":"<div><p>Fluorinated carbons CF<em>_x</em> hold the highest theoretical energy density (e.g., 2180 W h kg⁻¹ when <em>x</em> = 1) among all cathode materials of lithium primary batteries. However, the low conductivity and severe polarization limit it to achieve its theory. In this study, we design a new electrolyte, namely 1 M LiBF₄ DMSO:DOL (1:9 vol.), achieving a high energy density in Li/CF<em>_x</em> primary cells. The DMSO with a small molecular size and high donor number successfully solvates Li⁺ into a defined Li⁺-solvation structure. Such solvated Li⁺ can intercalate into the large-spacing carbon layers and achieve an improved capacity. Consequently, when discharged to 1.0 V, the CF_1.12 cathode demonstrates a specific capacity of 1944 mA h g⁻¹ with a specific energy density of 3793 W h kg⁻¹. This strategy demonstrates that designing the electrolyte is powerful in improving the electrochemical performance of CF<em>_x</em> cathode.</p></div>","PeriodicalId":67498,"journal":{"name":"能源化学","volume":"89 ","pages":"Pages 208-215"},"PeriodicalIF":13.1,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136093595","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":"Design, preparation, application of advanced array structured materials and their action mechanism analyses for high performance lithium-sulfur batteries","authors":"Nanping Deng ,&nbsp;Xiaofan Feng ,&nbsp;Yongbing Jin ,&nbsp;Zhaozhao Peng ,&nbsp;Yang Feng ,&nbsp;Ying Tian ,&nbsp;Yong Liu ,&nbsp;Lu Gao ,&nbsp;Weimin Kang ,&nbsp;Bowen Cheng","doi":"10.1016/j.jechem.2023.10.054","DOIUrl":"10.1016/j.jechem.2023.10.054","url":null,"abstract":"<div><p><span>Lithium-sulfur battery<span> (LSB) has brought much attention and concern because of high theoretical specific capacity and energy density as one of main competitors for next-generation </span></span>energy storage systems<span><span><span>. The widely commercial application and development of LSB is mainly hindered by serious “shuttle effect” of lithium polysulfides (LiPSs), slow reaction kinetics, notorious </span>lithium dendrites, etc. In various structures of LSB materials, array structured materials, possessing the composition of ordered micro units with the same or similar characteristics of each unit, present excellent application potential for various secondary cells due to some merits such as </span>immobilization of active substances, high specific surface area, appropriate pore sizes, easy modification of functional material surface, accommodated huge volume change, enough facilitated transportation for electrons/lithium ions, and special functional groups strongly adsorbing LiPSs. Thus many novel array structured materials are applied to battery for tackling thorny problems mentioned above. In this review, recent progresses and developments on array structured materials applied in LSBs including preparation ways, collaborative structural designs based on array structures, and action mechanism analyses in improving electrochemical performance and safety are summarized. Meanwhile, we also have detailed discussion for array structured materials in LSBs and constructed the structure-function relationships between array structured materials and battery performances. Lastly, some directions and prospects about preparation ways, functional modifications, and practical applications of array structured materials in LSBs are generalized. We hope the review can attract more researchers' attention and bring more studying on array structured materials for other secondary batteries including LSB.</span></p></div>","PeriodicalId":67498,"journal":{"name":"能源化学","volume":"89 ","pages":"Pages 266-303"},"PeriodicalIF":13.1,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135609005","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":"Rapid health estimation of in-service battery packs based on limited labels and domain adaptation","authors":"Zhongwei Deng ,&nbsp;Le Xu ,&nbsp;Hongao Liu ,&nbsp;Xiaosong Hu ,&nbsp;Bing Wang ,&nbsp;Jingjing Zhou","doi":"10.1016/j.jechem.2023.10.056","DOIUrl":"10.1016/j.jechem.2023.10.056","url":null,"abstract":"<div><p>For large-scale in-service electric vehicles (EVs) that undergo potential maintenance, second-hand transactions, and retirement, it is crucial to rapidly evaluate the health status of their battery packs. However, existing methods often rely on lengthy battery charging/discharging data or extensive training samples, which hinders their implementation in practical scenarios. To address this issue, a rapid health estimation method based on short-time charging data and limited labels for in-service battery packs is proposed in this paper. First, a digital twin of battery pack is established to emulate its dynamic behavior across various aging levels and inconsistency degrees. Then, increment capacity sequences (△<strong><em>Q</em></strong><span>) within a short voltage span are extracted from charging process to indicate battery health. Furthermore, data-driven models based on deep convolutional neural network (DCNN) are constructed to estimate battery state of health (SOH), where the synthetic data is employed to pre-train the models, and transfer learning strategies by using fine-tuning and domain adaptation are utilized to enhance the model adaptability. Finally, field data of 10 EVs exhibiting different SOHs are used to verify the proposed methods. By using the △</span><strong><em>Q</em></strong> with 100 mV voltage change, the SOH of battery packs can be accurately estimated with an error around 3.2%.</p></div>","PeriodicalId":67498,"journal":{"name":"能源化学","volume":"89 ","pages":"Pages 345-354"},"PeriodicalIF":13.1,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135609376","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":"Degradation analysis and doping modification optimization for high-voltage P-type layered cathode in sodium-ion batteries","authors":"Bao Zhang ,&nbsp;Yi Zhao ,&nbsp;Minghuang Li ,&nbsp;Qi Wang ,&nbsp;Lei Cheng ,&nbsp;Lei Ming ,&nbsp;Xing Ou ,&nbsp;Xiaowei Wang","doi":"10.1016/j.jechem.2023.10.026","DOIUrl":"https://doi.org/10.1016/j.jechem.2023.10.026","url":null,"abstract":"<div><p><span><span>Advancing high-voltage stability of layered sodium-ion oxides represents a pivotal avenue for their progress in energy storage applications<span>. Despite this, a comprehensive understanding of the mechanisms underpinning their </span></span>structural deterioration<span> at elevated voltages remains insufficiently explored. In this study, we unveil a layer delamination phenomenon of Na</span></span>_0.67Ni_0.3Mn_0.7O₂<span> (NNM) within the 2.0–4.3 V voltage, attributed to considerable volumetric fluctuations along the </span><em>c</em>-axis and lattice oxygen reactions induced by the simultaneous Ni³⁺/Ni⁴⁺ and anion redox reactions. By introducing Mg doping to diminished Ni–O antibonding, the anion oxidation-reduction reactions are effectively mitigated, and the structural integrity of the P2 phase remains firmly intact, safeguarding active sites and precluding the formation of novel interfaces. The Na_0.67Mg_0.05Ni_0.25Mn_0.7O₂ (NMNM-5) exhibits a specific capacity of 100.7 mA h g⁻¹<span>, signifying an 83% improvement compared to the NNM material within the voltage of 2.0–4.3 V. This investigation underscores the intricate interplay<span> between high-voltage stability and structural degradation mechanisms in layered sodium-ion oxides.</span></span></p></div>","PeriodicalId":67498,"journal":{"name":"能源化学","volume":"89 ","pages":"Pages 1-9"},"PeriodicalIF":0.0,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"92166591","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":"Tuning the surface electronic structure of noble metal aerogels to promote the electrocatalytic oxygen reduction","authors":"Hongxing Yuan,&nbsp;Wei Gao,&nbsp;Xinhao Wan,&nbsp;Jianqi Ye,&nbsp;Dan Wen","doi":"10.1016/j.jechem.2023.11.006","DOIUrl":"https://doi.org/10.1016/j.jechem.2023.11.006","url":null,"abstract":"<div><p>The sluggish kinetics of the oxygen reduction reaction (ORR) is the bottleneck for various electrochemical energy conversion devices. Regulating the electronic structure of electrocatalysts by ligands has received particular attention in deriving valid ORR electrocatalysts. Here, the surface electronic structure of Pt-based noble metal aerogels (NMAs) was modulated by various organic ligands, among which the electron-withdrawing ligand of 4-methylphenylene effectively boosted the ORR electrocatalysis. Theoretical calculations suggested the smaller energy barrier for the transformation of O* to OH* and downshift the <em>d</em>-band center of Pt due to the interaction between 4-methylphenylene and the surface metals, thus enhancing the ORR intrinsic activity. Both Pt₃Ni and PtPd aerogels with 4-methylphenylene decoration performed significant enhancement in ORR activity and durability in different media. Remarkably, the 4-methylphenylene modified PtPd aerogel exhibited the higher half-wave potential of 0.952 V and the mass activity of 10.2 times of commercial Pt/C. This work explained the effect of electronic structure on ORR electrocatalytic properties and would promote functionalized NMAs as efficient ORR electrocatalysts.</p></div>","PeriodicalId":67498,"journal":{"name":"能源化学","volume":"89 ","pages":"Pages 557-564"},"PeriodicalIF":13.1,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138453507","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":"Electrochemical synthesis of trimetallic nickel-iron-copper nanoparticles via potential-cycling for high current density anion exchange membrane water-splitting applications","authors":"Ziqi Zhang,&nbsp;Sheng Wan,&nbsp;Hanbo Wang,&nbsp;Jinghan He,&nbsp;Ruige Zhang,&nbsp;Yuhang Qi,&nbsp;Haiyan Lu","doi":"10.1016/j.jechem.2023.10.033","DOIUrl":"10.1016/j.jechem.2023.10.033","url":null,"abstract":"<div><p>Hydrogen is known for its elevated energy density and environmental compatibility and is a promising alternative to fossil fuels. Alkaline water electrolysis utilizing renewable energy sources has emerged as a means to obtain high-purity hydrogen. Nevertheless, electrocatalysts used in the process are fabricated using conventional wet chemical synthesis methods, such as sol–gel, hydrothermal, or surfactant-assisted approaches, which often necessitate intricate pretreatment procedures and are vulnerable to post-treatment contamination. Therefore, this study introduces a streamlined and environmentally conscious one-step potential-cycling approach to generate a highly efficient trimetallic nickel-iron-copper electrocatalyst in situ on nickel foam. The synthesized material exhibited remarkable performance, requiring a mere 476 mV to drive electrochemical water splitting at 100 mA cm⁻²<span> current density in alkaline solution. Furthermore, this material was integrated into an anion exchange membrane water-splitting device and achieved an exceptionally high current density of 1 A cm</span>⁻² at a low cell voltage of 2.13 V, outperforming the noble-metal benchmark (2.51 V). Additionally, ex situ characterizations were employed to detect transformations in the active sites during the catalytic process, revealing the structural transformations and providing inspiration for further design of electrocatalysts.</p></div>","PeriodicalId":67498,"journal":{"name":"能源化学","volume":"89 ","pages":"Pages 535-542"},"PeriodicalIF":13.1,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135410121","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}