Journal of Solid State Electrochemistry最新文献_第8页

Enhanced performance of Sr2Fe1.5Mo0.5O6-δ electrode by infiltrating dual functional barium carbonate nanoparticles in symmetrical SOFCs 在对称sofc中浸润双功能碳酸钡纳米颗粒增强Sr2Fe1.5Mo0.5O6-δ电极性能

IF 2.6 4区化学

Journal of Solid State Electrochemistry Pub Date : 2024-10-26 DOI: 10.1007/s10008-024-06125-9

Wei Tang, Yingwei Lu, Pengqi Chen, Tao Hong, Dong Tian, Shiyue Zhu, Jigui Cheng

{"title":"Enhanced performance of Sr2Fe1.5Mo0.5O6-δ electrode by infiltrating dual functional barium carbonate nanoparticles in symmetrical SOFCs","authors":"Wei Tang, Yingwei Lu, Pengqi Chen, Tao Hong, Dong Tian, Shiyue Zhu, Jigui Cheng","doi":"10.1007/s10008-024-06125-9","DOIUrl":"10.1007/s10008-024-06125-9","url":null,"abstract":"<div>In solid oxide fuel cell (SOFC) electrode catalyst, the reaction in cathode and anode involves different reactions that require diverse catalytic materials. In this work, BaCO3 as a non-ionic/electronic conductor was infiltrated into Sr2Fe1.5Mo0.5O6-δ (SFM) electrode in symmetrical SOFC. The oxygen reduction reaction in SFM cathode could be enhanced when infiltrated with BaCO3, as area-specific resistance (ASR) was reduced from 0.33 to 0.15 Ωcm2 at 700 °C. The 0.42 Ωcm2 ASR values of SFM anode are reduced to 0.35 Ωcm2. The performance improvement is directly related with the loading weight of BaCO3, which is actually the surface coverage of BaCO3 on SFM electrode frame. And the oxygen surface exchange coefficient of SFM cathode is improved from 4.8 × 10−5 to 10.5 × 10−5 cms−1 at 800 °C, but the hydrogen oxidation rate of SFM anode is slightly increased, which is consistent with the infiltrated SFM anode. For a full cell with BaCO3 infiltrated SFM as cathode and anode, the power density is 0.81 Wcm−2 that is 44% higher than the bare SFM electrode at 800 °C and remains stable at 0.64 Acm−2 for the 200 h test. As a cheap and extensive synergistic catalyst for electrode reaction, barium carbonate shows great application potential in SOFC.</div>","PeriodicalId":665,"journal":{"name":"Journal of Solid State Electrochemistry","volume":"29 5","pages":"1743 - 1754"},"PeriodicalIF":2.6,"publicationDate":"2024-10-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143821726","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Synthesis of CuS and CuS/C-150 for application in battery type electrode and analysis via electrochemical impedance spectroscopy 用于电池电极的cu和cu /C-150的合成及电化学阻抗谱分析

IF 2.6 4区化学

Journal of Solid State Electrochemistry Pub Date : 2024-10-25 DOI: 10.1007/s10008-024-06124-w

M. R. Cunha, J. C. M. da Costa, R. R. Passos, L. A. Pocrifka

{"title":"Synthesis of CuS and CuS/C-150 for application in battery type electrode and analysis via electrochemical impedance spectroscopy","authors":"M. R. Cunha, J. C. M. da Costa, R. R. Passos, L. A. Pocrifka","doi":"10.1007/s10008-024-06124-w","DOIUrl":"10.1007/s10008-024-06124-w","url":null,"abstract":"<div>In this work, a simple and efficient hydrothermal synthesis route for CuS and CuS/C-150 is presented, overcoming the limitations of traditional methods by using a single-step synthesis that allows more efficient and scalable process. This method also provides a more detailed study of the mechanisms between the material/electrolyte interface through electrochemical impedance spectroscopy. Scanning electron microscopy analyses revealed the morphological formation of microspheres and microsheets under the synthesis conditions. The method and synthesis conditions led to the formation of CuS in the covellite form (JCPDS nº 06–0646), which was confirmed via X-ray diffraction. A decrease in the intensity of the peaks in the CuS/C-150 diffractogram was observed, characteristic of amorphous material. Cyclic voltammetry revealed redox peaks characteristic of CuS and CuS/C-150 materials, and the specific capacity values of CuS and CuS/C-150 were measured by galvanostatic charge–discharge, yielding 168.8 and 121.9 C.g−1, respectively. These values indicate that these materials are good charge storage. For cyclic stability (5 mA.cm−2), CuS/C-150 retained 74.1% after 200 cycles. Electrochemical impedance spectroscopy analysis indicated that the resistances were negligible for both solution and charge transfer. Through complex calculations via impedance spectroscopy, the materials obtained relaxation time constants (τ0) of approximately 2.30 s, and at the intercept of the |Q/S| =|P/S|, 70% curves were obtained. Therefore, the electrochemical results were satisfactory and confirmed that the materials are promising battery-type electrodes and that the hydrothermal route is viable and effective for obtaining the studied materials.</div>","PeriodicalId":665,"journal":{"name":"Journal of Solid State Electrochemistry","volume":"29 3","pages":"915 - 922"},"PeriodicalIF":2.6,"publicationDate":"2024-10-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143430946","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Assessment of mechanical traits and corrosion resistance in ZrC nanoceramic–strengthened Ni-W-P nanocomposite coatings ZrC纳米陶瓷增强Ni-W-P纳米复合涂层力学性能及耐蚀性能评价

IF 2.6 4区化学

Journal of Solid State Electrochemistry Pub Date : 2024-10-24 DOI: 10.1007/s10008-024-06077-0

Yi Sun, Shijun Xu, Jiamin Zhong, Yi He, Shihong Zhang, Han Liu, Qing Yuan, Xiangshan Hou, Quangang Chen, Zhiyuan Li

{"title":"Assessment of mechanical traits and corrosion resistance in ZrC nanoceramic–strengthened Ni-W-P nanocomposite coatings","authors":"Yi Sun, Shijun Xu, Jiamin Zhong, Yi He, Shihong Zhang, Han Liu, Qing Yuan, Xiangshan Hou, Quangang Chen, Zhiyuan Li","doi":"10.1007/s10008-024-06077-0","DOIUrl":"10.1007/s10008-024-06077-0","url":null,"abstract":"<div>The electroless plating method was used in this work to successfully create a Ni-W-P/ZrC composite coating on an N80 carbon steel substrate. How the ceramic nanomaterial ZrC affected the coating’s mechanical property, surface morphology, and corrosion resistance has also been investigated in this work. The outcomes demonstrated that the addition of ZrC material can greatly enhance the performance of the coating in a severe environment. The coating’s surface flaws improve, its surface gets denser and more complete, and its grain size gets much more refined as the concentration of ZrC increases. This is particularly evident when the ZrC concentration is 4 g/L. Because of ZrC’s dispersion strengthening and grain refinement effects, the composite coating with 4 g/L of ZrC has an average friction coefficient of 0.524 in the friction test which is lower than the Ni-W-P alloy coating. It also has a narrower wear section and a significantly smaller wear volume (0.0011 mm3). Furthermore, ZrC significantly increases the composite coatings’ resistance to corrosion. The corrosion current density of the composite coating is 5.27 µA/cm2, the corrosion potential is − 0.282 V, and the impedance is 8.21 × 104 Ω⋅cm2 when the concentration of ZrC is 4 g/L.</div>","PeriodicalId":665,"journal":{"name":"Journal of Solid State Electrochemistry","volume":"29 5","pages":"1701 - 1715"},"PeriodicalIF":2.6,"publicationDate":"2024-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143822051","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Construction of NiCo2S4 wrapped CeO2/Co3O4 nanorod arrays for excellent performance supercapacitors 高性能超级电容器用NiCo2S4包覆CeO2/Co3O4纳米棒阵列的构建

IF 2.6 4区化学

Journal of Solid State Electrochemistry Pub Date : 2024-10-24 DOI: 10.1007/s10008-024-06121-z

Mi Xiao, Xinyu Hui, Songyi Yang, Xinyue Du, Xiaofan Gao, Zhuoyuan Song, Weixi Zhang, Meng Xiao

{"title":"Construction of NiCo2S4 wrapped CeO2/Co3O4 nanorod arrays for excellent performance supercapacitors","authors":"Mi Xiao, Xinyu Hui, Songyi Yang, Xinyue Du, Xiaofan Gao, Zhuoyuan Song, Weixi Zhang, Meng Xiao","doi":"10.1007/s10008-024-06121-z","DOIUrl":"10.1007/s10008-024-06121-z","url":null,"abstract":"<div>Supercapacitor (SC) electrodes with excellent capacity and multiplicity performance have been in demand for a long time. In this paper, CeO2/Co3O4 nanorod arrays were firstly synthesized by hydrothermal method and thermal treatments, and then NiCo2S4 were successfully wrapped around CeO2/Co3O4 nanorod arrays by electrodeposition. On the one hand, the CeO2/Co3O4 nanorod arrays acted as a core layer to provide a scaffold for the continuous and stable conductivity of the electrochemical reaction, while on the other hand, the NiCo2S4 played an important role in increasing the capacity due to their high conductivity. The electrochemical properties of NiCo2S4@ CeO2/Co3O4 electrode materials were remarkable improvement due to the synergistic and complementary effect. The area capacitance of the prepared NiCo2S4@ CeO2/Co3O4 nanorod arrays was 1576.67 mF cm−2 with a current density of 1 mA cm−2. And the intrinsic and transfer resistances of the composites were 0.816 Ω and 0.064 Ω. Meanwhile, the asymmetrical supercapacitors exhibited excellent energy density (0.074 mWh cm−2) with the power density of 0.805 mW cm−2. The capacitive retention rate after 5000 cycles was 93.25%. This study demonstrates that the 3D core–shell structure of NiCo2S4@ CeO2/Co3O4 nanorod arrays has a good practical application potential in supercapacitor devices.</div>","PeriodicalId":665,"journal":{"name":"Journal of Solid State Electrochemistry","volume":"29 5","pages":"1731 - 1741"},"PeriodicalIF":2.6,"publicationDate":"2024-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143822053","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Preparation of Petal-like structure NiO@ZIF-67 nanocomposites for application to high-performance supercapacitors 花瓣状结构NiO@ZIF-67纳米复合材料在高性能超级电容器中的应用

IF 2.6 4区化学

Journal of Solid State Electrochemistry Pub Date : 2024-10-24 DOI: 10.1007/s10008-024-06120-0

Yuhang Mou, Qing He, Ying He, Chenyao Meng, Hui Liu, Liang Li

{"title":"Preparation of Petal-like structure NiO@ZIF-67 nanocomposites for application to high-performance supercapacitors","authors":"Yuhang Mou, Qing He, Ying He, Chenyao Meng, Hui Liu, Liang Li","doi":"10.1007/s10008-024-06120-0","DOIUrl":"10.1007/s10008-024-06120-0","url":null,"abstract":"<div>Supercapacitors as green energy storage devices are widely utilized in vehicle manufacturing, rail transportation, power systems, and other fields. In this study, petal-like NiO was synthesized via a one-step hydrothermal method, followed by the preparation of NiO@ZIF-67 composite electrode material at room temperature. X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), and scanning electron microscopy (SEM) tests demonstrated that the NiO in NiO@ZIF-67 possesses a porous petal-like structure, with ZIF-67 particles uniformly growing on NiO sheets. The effect of ZIF-67 content on the electrochemical performance of NiO was investigated, and results showed that NiO@ZIF-67/1, prepared with a mass ratio of NiO to Co(NO₃)₂·6 H₂O of 1:1, exhibits the optimal electrochemical performance. The specific capacitance of NiO@ZIF-67/1 electrode material reached 188.44 F·g⁻¹ at 1 A/g. Furthermore, the symmetric supercapacitor assembled with NiO@ZIF-67 exhibited a maximum energy density of 41.76 Wh/kg at 1.4 kW/h, with a capacitance retention rate of 87.2% after 5000 cycles.<h3>Graphical abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":665,"journal":{"name":"Journal of Solid State Electrochemistry","volume":"29 5","pages":"1717 - 1729"},"PeriodicalIF":2.6,"publicationDate":"2024-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143822052","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Tuning the geometry of porous alumina layers via anodization in mixtures of different acids 通过在不同酸的混合物中阳极氧化来调整多孔氧化铝层的几何形状

IF 2.6 4区化学

Journal of Solid State Electrochemistry Pub Date : 2024-10-22 DOI: 10.1007/s10008-024-06114-y

Aleksandra Świerkula, Leszek Zaraska

{"title":"Tuning the geometry of porous alumina layers via anodization in mixtures of different acids","authors":"Aleksandra Świerkula, Leszek Zaraska","doi":"10.1007/s10008-024-06114-y","DOIUrl":"10.1007/s10008-024-06114-y","url":null,"abstract":"<div>Porous anodic aluminum oxide (AAO) layers have been obtained by two-step anodization of high-purity Al in two types of acid mixtures, i.e., in H2C2O4–H3PO4 and, for the first time, in H2SO4–H3PO4 systems. The kinetics of oxide formation was examined by monitoring the current vs. time curves while the morphology of the resulting layers was carefully verified by scanning electron microscopy (SEM). A special emphasis was put on establishing correlations between electrolyte composition, the kinetics and effectiveness of oxide growth, and the morphological features of AAO layers (pore and cell diameter, porosity), as well as pore arrangement. It was confirmed that the addition of H3PO4 to both H2C2O4 and H2SO4 electrolytes results in a significant decrease in oxide growth rate, and worsening of pore arrangement, while the values of pore diameter and interpore distance are much less affected. Moreover, the presence of a small amount of phosphoric acid in the reaction mixture allowed for a noticeable increase in pore ordering if anodization was carried out beyond the self-ordering regime, or performing controlled anodization even at voltages at which the burning phenomenon is typically observed. It is strongly believed that manipulating the electrolyte composition by adding another acid may provide another degree of freedom to control the morphology of the resulting nanostructured alumina layers.</div>","PeriodicalId":665,"journal":{"name":"Journal of Solid State Electrochemistry","volume":"29 4","pages":"1449 - 1458"},"PeriodicalIF":2.6,"publicationDate":"2024-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10008-024-06114-y.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143632416","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Electrochemical pre-treatment of graphite electrode as a green modification strategy for sensitive voltammetric determination of pyrazinamide 电化学预处理石墨电极作为一种绿色改性策略用于吡嗪酰胺的灵敏伏安测定

IF 2.6 4区化学

Journal of Solid State Electrochemistry Pub Date : 2024-10-22 DOI: 10.1007/s10008-024-06076-1

Esmaeel Alipour, Mohadese Haghkhah, Karim Asadpour-Zeynali

{"title":"Electrochemical pre-treatment of graphite electrode as a green modification strategy for sensitive voltammetric determination of pyrazinamide","authors":"Esmaeel Alipour, Mohadese Haghkhah, Karim Asadpour-Zeynali","doi":"10.1007/s10008-024-06076-1","DOIUrl":"10.1007/s10008-024-06076-1","url":null,"abstract":"<div>Graphite electrode (GE) is an alternative, commercially available, and ready-to-use electrode for a wide range of electroanalytical applications. Electrochemical activation of GE is an efficient step in the preparation of high-performance electrochemical (bio-)sensors. In the present study and the continuation of our research project in the lab about the effect of activation of GE surface on the alteration of electrode structure (formation of different functional groups) and subsequent influence on the sensitive determination of various analytes, a simple and low-cost electrochemical sensor based on the graphite electrode extracted from the battery is developed to measure pyrazinamide (PZA), an antibiotic that is mostly used in treating tuberculosis. Two activation strategies including potentiostatic and potentiodynamic were tested and according to the results, utilizing the potentiodynamic strategy represents good performance in the sensitive detection of PZA. Morphological characterization of activated GE was done using scanning electron microscopy (SEM). A comparison of the effective surface area of the activated and bare GE revealed that the activation process increased the effective surface area of the electrode by 1.6 times. The electroanalytical response of PZA at the activated GE surface was studied utilizing cyclic voltammetry (CV) and differential pulse voltammetry (DPV) techniques. The impact of various parameters on the reduction current response of PZA was investigated and it was found that the developed electrochemical sensor can successfully determine PZA within the concentration ranges of 1.31–29.81 µM under the optimized conditions and the limit of detection (LOD) was calculated to be 0.89 µM as well. Analysis of real samples such as pharmaceutical formulations and human serum demonstrated excellent recoveries, revealing the promising capability of the proposed sensor for PZA determination.</div>","PeriodicalId":665,"journal":{"name":"Journal of Solid State Electrochemistry","volume":"29 5","pages":"1689 - 1699"},"PeriodicalIF":2.6,"publicationDate":"2024-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143822047","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

In situ reduction-sulfurized FeS2 based on iron oxide as electrocatalyst for rechargeable Li-O2 batteries 基于氧化铁的原位还原硫化FeS2作为可充电锂氧电池的电催化剂

IF 2.6 4区化学

Journal of Solid State Electrochemistry Pub Date : 2024-10-21 DOI: 10.1007/s10008-024-06115-x

Shengxue Yan, Haitao Ma, Zhanzhan Wang, Shaohua Luo, Jing Guo

{"title":"In situ reduction-sulfurized FeS2 based on iron oxide as electrocatalyst for rechargeable Li-O2 batteries","authors":"Shengxue Yan, Haitao Ma, Zhanzhan Wang, Shaohua Luo, Jing Guo","doi":"10.1007/s10008-024-06115-x","DOIUrl":"10.1007/s10008-024-06115-x","url":null,"abstract":"<div>Significant advancements have been made in the development of lithium-oxygen batteries, achieving impressive results. However, their practical application is hindered by issues such as short cycle life, rapid capacity decay, and low energy conversion efficiency. Selecting suitable electrolytes and cathode catalysts can effectively address these challenges and enhance battery performance. This study investigates the use of Fe2O3 and FeS2 as cathode catalysts for lithium-oxygen batteries. The structural characteristics and surface morphologies of the Fe2O3 and FeS2 samples were analyzed by X-ray diffraction (XRD) and scanning electron microscopy (SEM). The electrochemical performances of these catalysts were compared, showing that FeS2 has a higher charge/discharge specific capacity (5740 mAh g−1 at a current density of 100 mA g−1) compared to Fe2O3 (2676 Ah g−1 at the same current density). Furthermore, FeS2 exhibited better cycling stability, maintaining 97 cycles at 100 mA g−1 current density with a 500 mAh g−1 specific capacity limit and demonstrating lower electrochemical impedance. Electrocatalytic oxygen reduction tests also revealed that FeS2 exhibits higher oxygen reduction reaction (ORR) catalytic activity than Fe2O3. These results indicate that FeS2 outperforms Fe2O3 as a cathode catalyst in lithium-oxygen batteries.</div>","PeriodicalId":665,"journal":{"name":"Journal of Solid State Electrochemistry","volume":"29 5","pages":"1665 - 1675"},"PeriodicalIF":2.6,"publicationDate":"2024-10-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143822036","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Investigating the bifunctional electrocatalytic activity of nickel oxide/nitrogen-doped reduced graphene oxide nanocomposite for zinc-air battery application 研究了氧化镍/氮掺杂还原氧化石墨烯纳米复合材料在锌空气电池中的双功能电催化活性

IF 2.6 4区化学

Journal of Solid State Electrochemistry Pub Date : 2024-10-21 DOI: 10.1007/s10008-024-06116-w

Habu Abba, Magaji Ladan, Haruna Musa, Ibrahim Tajo Siraj, Ahmad Muhammad Yamani, Abdulfatah Shehu Muhammad, Nura Muhammad Kwalam, Abdul-Rahman A. Abdul, Ayuba Abdullahi Muhammad, Shehu Habibu, Md. Shalauddin, Nasar Mansir, Wan Jeffrey Basirun, Mustapha Balarabe Idris

{"title":"Investigating the bifunctional electrocatalytic activity of nickel oxide/nitrogen-doped reduced graphene oxide nanocomposite for zinc-air battery application","authors":"Habu Abba, Magaji Ladan, Haruna Musa, Ibrahim Tajo Siraj, Ahmad Muhammad Yamani, Abdulfatah Shehu Muhammad, Nura Muhammad Kwalam, Abdul-Rahman A. Abdul, Ayuba Abdullahi Muhammad, Shehu Habibu, Md. Shalauddin, Nasar Mansir, Wan Jeffrey Basirun, Mustapha Balarabe Idris","doi":"10.1007/s10008-024-06116-w","DOIUrl":"10.1007/s10008-024-06116-w","url":null,"abstract":"<div>The performance of electrically rechargeable zinc-air batteries (ErZAB) depends on the efficiency of bifunctional electrocatalysts. Herein, four different forms of the nickel oxide/nitrogen-doped reduced graphene oxide (NiO/rGO), with various amounts of the Acacia Ataxacantha leaves extract, were synthesized by a hydrothermal method. The effect of the extract loading on the oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) is reported. The energy dispersive X-ray spectra confirm that the plant extract can act as a dopant for nitrogen and reductant for the graphene oxide, whereas the field emission scanning electron microscopic (FE-SEM) images demonstrate that the NiO nanoparticles were uniformly dispersed onto the surface of the rGO thereby providing greater number of active sites for electrocatalytic activity. The electrochemical characterization reveals that the doping of the N improves the bifunctional electrocatalytic activity of NiO-rGO nanocomposite. Furthermore, the ORR and OER onset potential were found to decrease and increase with an increase in the loading level of the plant extract respectively. It was found that 7.5 mL of the plant extract is the optimum loading level to achieve the highest ORR and OER electrocatalytic activities. Furthermore, battery testing indicated that the bifunctional electrocatalyst showed outstanding charge-discharge cycle performances, with its voltage polarization exhibiting a 0.25% decrease in discharge and a 1.4% increase in charge after 50 charge-discharge cycles.</div>","PeriodicalId":665,"journal":{"name":"Journal of Solid State Electrochemistry","volume":"29 5","pages":"1653 - 1663"},"PeriodicalIF":2.6,"publicationDate":"2024-10-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143822034","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Nanoscale energy: unveiling the super-capacitive prowess of graphitic carbon nitride–carbon dots–yttria as GCY nanocomposites for sustainable energy electrode 纳米能量：揭示石墨碳氮-碳点-钇作为可持续能源电极的GCY纳米复合材料的超级电容能力

IF 2.6 4区化学

Journal of Solid State Electrochemistry Pub Date : 2024-10-21 DOI: 10.1007/s10008-024-06117-9

Rajat Arora, Monika Dhanda, Meena Yadav, Vikrant Singh Rao, Priti Pahuja, Simran Ahlawat, Satya Pal Nehra, Suman Lata

{"title":"Nanoscale energy: unveiling the super-capacitive prowess of graphitic carbon nitride–carbon dots–yttria as GCY nanocomposites for sustainable energy electrode","authors":"Rajat Arora, Monika Dhanda, Meena Yadav, Vikrant Singh Rao, Priti Pahuja, Simran Ahlawat, Satya Pal Nehra, Suman Lata","doi":"10.1007/s10008-024-06117-9","DOIUrl":"10.1007/s10008-024-06117-9","url":null,"abstract":"<div>This study involves the preparation of graphitic carbon nitride (G), carbon quantum dots (C), and yttrium oxide (Y) to synthesize GCY nanocomposites. The synthesis process includes two steps: ultrasonication and hydrothermal treatment. The resulting nanocomposites are then evaluated for their super-capacitive performance using a GCY working electrode. The nanocomposites are analyzed using FTIR, FESEM, and HRTEM to confirm their proper synthesis and are then used as electrode materials for electrochemical energy storage. 0.6 GCY, a composite material, has demonstrated a significant specific capacitance of 378.47 F/g, along with an energy density of 18.17 Wh/kg at a power density of 681.4 W/kg. This makes it a highly promising composite electrode for electrical energy-consuming devices, serving as a reliable energy backup. In addition, the 0.6 GCY had an impressive retention rate of 91.54% after undergoing 5000 cycles. Thus, the GCY electrode, which is easily synthesized, exhibits excellent potential for energy storage in supercapacitor applications. This is attributed to its favorable production process, impressive CV and GCD values, and remarkable capacitive retention.</div>","PeriodicalId":665,"journal":{"name":"Journal of Solid State Electrochemistry","volume":"29 5","pages":"1677 - 1687"},"PeriodicalIF":2.6,"publicationDate":"2024-10-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143822035","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0