Energy technology最新文献_第3页

An Easily Scalable Multilayer Rotary Electret Generator Based on Bipolar Electrets 基于双极驻极体的易扩展多层旋转驻极体发生器

IF 3.6 4区工程技术

Energy technology Pub Date : 2025-04-23 DOI: 10.1002/ente.202402175

Jianfeng Zhang, Xiaoli Gao, Pengzhuo Li, Youshu Yu, Dongguang Zheng, Fei Li, Gangjin Chen

{"title":"An Easily Scalable Multilayer Rotary Electret Generator Based on Bipolar Electrets","authors":"Jianfeng Zhang, Xiaoli Gao, Pengzhuo Li, Youshu Yu, Dongguang Zheng, Fei Li, Gangjin Chen","doi":"10.1002/ente.202402175","DOIUrl":"https://doi.org/10.1002/ente.202402175","url":null,"abstract":"Electret generators, which harvest ambient mechanical energy to power electronic devices, have emerged as a potential sustainable solution for power supply and have attracted widespread interest. However, the realization of high electrical outputs as well as the simplification of machining processes and structural designs remain challenges. Herein, an easily scalable multilayer rotary electret generator (REG) based on bipolar electrets is proposed to provide a solution to the above problems. The bipolar electret films are utilized for the preparation of REG, eliminating the need for the conventional patterned bipolar charging process. The output performance of the REG under different parameters is investigated and the structural parameters of the REG are optimized. Results show that the electrical output of the REG increases linearly with the number of rotor layers. Compared to the conventional single-layer rotor with electrets on one side, the ten-layer rotor with electrets on both sides increases the output voltage and current by ≈18 times. The REG with the ten-layer rotor achieves a maximum average power of 58.7 mW at 360 rpm. As a demonstration, over 500 blue light emitting diodes in series are lit using the multilayer REG.","PeriodicalId":11573,"journal":{"name":"Energy technology","volume":"13 10","pages":""},"PeriodicalIF":3.6,"publicationDate":"2025-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145224191","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Electrochemical, Corrosion, and Dye Absorption Properties of Hydrothermally Grown 1D Nanostructured ZnO:Al Photoanodes 水热生长一维纳米结构ZnO:Al光阳极的电化学、腐蚀和染料吸收性能

IF 3.6 4区工程技术

Energy technology Pub Date : 2025-04-23 DOI: 10.1002/ente.202500204

Orkun Gultepe, Ferhunde Atay

{"title":"Electrochemical, Corrosion, and Dye Absorption Properties of Hydrothermally Grown 1D Nanostructured ZnO:Al Photoanodes","authors":"Orkun Gultepe, Ferhunde Atay","doi":"10.1002/ente.202500204","DOIUrl":"https://doi.org/10.1002/ente.202500204","url":null,"abstract":"Instability (corrosion), Zn2+-dye complex formations, low injection efficiency, fast charge recombination, and low light-harvesting capacity are the factors that limit the potential usage of ZnO nanostructured photoanodes in dye-sensitized solar cells. In this study, innovative strategies such as adding Al element and using hexamethylenediamine capping agent are developed to contribute to the solution of them. 1D ZnO:Al nanomaterials are hydrothermally grown on ZnO-cores produced by sol–gel spin coating. Highly crystalline ZnO:Al nanorods grow preferentially along the c-axis and increase the light-harvesting capacity by absorbing visible light. Hexamethylenediamine increased the average nanorod lengths from 480 to 810 nm while decreasing their diameters from 63 to 41 nm. Hexamethylenediamine caused smaller charge transfer resistance (130.5 kΩ), 2.2 times decrease in corrosion current density because of ZnO passive corrosion shield, and good adsorption of N719 dye. In conclusion, ZnO:Al nanorods synthesized using hexamethylenetetramine–hexamethylenediamine ligand mixture are more suitable photoanode materials due to their improved electrochemical properties, corrosion behavior, and dye-loading capacity.","PeriodicalId":11573,"journal":{"name":"Energy technology","volume":"13 10","pages":""},"PeriodicalIF":3.6,"publicationDate":"2025-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/ente.202500204","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145224189","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Ru-Doped UiO-66-Derived ZrO2-Enhanced Photothermal Catalytic CO2 Hydrogenation to Methane 钌掺杂uio -66衍生zro2增强光热催化CO2加氢制甲烷

IF 3.6 4区工程技术

Energy technology Pub Date : 2025-04-23 DOI: 10.1002/ente.202402364

Hui Huang, Qi Xu, Liangyun Yu, Lidong Li, Ying Zhang, Fennv Han, Qi Zhang

{"title":"Ru-Doped UiO-66-Derived ZrO2-Enhanced Photothermal Catalytic CO2 Hydrogenation to Methane","authors":"Hui Huang, Qi Xu, Liangyun Yu, Lidong Li, Ying Zhang, Fennv Han, Qi Zhang","doi":"10.1002/ente.202402364","DOIUrl":"https://doi.org/10.1002/ente.202402364","url":null,"abstract":"Currently, there is a thermodynamic and kinetic mismatch between carbon dioxide methanation. Carbon dioxide is stable in nature and requires a highly active catalyst to facilitate its reduction reaction. In this article, Ru/ZrO2 catalysts are prepared by a structure-directed derivatization strategy using zirconium-based metal-organic frameworks (MOFs) (UiO-66) as precursors. The porous framework structure of MOFs was utilized to construct Ru nanoparticles with a large size (≈9.7 nm). Photothermal catalysis is employed, and the photoexcitation induced the transfer of electrons from the conduction band of ZrO2 to Ru, which elevated the electron density of Ru to the enriched state and promoted the activation of CO2 adsorption, while the photothermal effect facilitated the warming of the catalyst bureau, which provided a favorable condition for CO2 methanation. The compositional valence, morphology, specific surface area, bandgap and other properties of the catalysts were evaluated by X-ray diffraction, X-ray photoelectron spectroscopy, transmission electron microscpe, Brunner-Emmet-Teller measurements, hydrogen temperature-programmed reduction, CO2-TPD, ultraviolet–visible, photoluminescence, and photocurrent response characterization. The experimental results showed that 99% methane selectivity and 120.354 mmol gcat−1 h−1 methane yield were achieved at 1 MPa and photothermal (250 °C) conditions.","PeriodicalId":11573,"journal":{"name":"Energy technology","volume":"13 10","pages":""},"PeriodicalIF":3.6,"publicationDate":"2025-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145224192","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

1,3-Dioxolane-Based Electrolytes for Environmentally Friendly High-Voltage Supercapacitors 环境友好型高压超级电容器用1,3-二氧氯烷基电解质

IF 3.6 4区工程技术

Energy technology Pub Date : 2025-04-22 DOI: 10.1002/ente.202402448

Heng-fei Wu, Jing-xuan Li, Liang Zhong, Li-ping Zhou, Ying Liu, Zhou Wang, Gang Zhang, Lian-li Zou, Mao-xiang Jing

{"title":"1,3-Dioxolane-Based Electrolytes for Environmentally Friendly High-Voltage Supercapacitors","authors":"Heng-fei Wu, Jing-xuan Li, Liang Zhong, Li-ping Zhou, Ying Liu, Zhou Wang, Gang Zhang, Lian-li Zou, Mao-xiang Jing","doi":"10.1002/ente.202402448","DOIUrl":"https://doi.org/10.1002/ente.202402448","url":null,"abstract":"Supercapacitor (SC) is an important energy storage device with high power density and long cycle life. The current commonly used acetonitrile-based electrolytes often have some problems such as serious corrosion and strong toxicity. Herein, 1,3-dioxolane (DOL) is used as solvent and lithium bis((trifluoromethyl)sulfonyl)azanide (LiTFSI) as lithium salt to form a nontoxic, corrosion-free electrolyte with high ionic conductivity for SCs. The ionic conductivity of the prepared DOL-LiTFSI electrolyte reaches 3.26 × 10−3 S cm−1. Further, the performance of the electrolyte is improved by adding 1,2-dimethoxyethane (DME). The addition of DME decreases the viscosity of the electrolyte and improves the ionic conductivity to 1.73 × 10−2 S cm−1. The DOL/DME composite electrolyte endows the activated carbon (AC) SC with higher cycle performance with a capacity retention rate of 82% after 15 000 cycles at a current density of 2 A g−1. In addition, by equipping a wound cylindrical SC, the capacity retention rate is 81.4% after 11 000 cycles at a current density of 10 A g−1. Notably, the electrolyte enables SCs to operate down to −30 °C and still provides a high specific capacitance and a long charge/discharge cycling. This environmentally friendly DOL-based electrolyte is expected to promote the green development of high-voltage SCs.","PeriodicalId":11573,"journal":{"name":"Energy technology","volume":"13 10","pages":""},"PeriodicalIF":3.6,"publicationDate":"2025-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145224185","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Magnetic Field Effects in 2D Manganese Ditelluride Supercapacitors 二维二碲化锰超级电容器的磁场效应

IF 3.6 4区工程技术

Energy technology Pub Date : 2025-04-21 DOI: 10.1002/ente.202500170

Chinmayee Chowde Gowda, Debabrata Mandal, Dharita Chandravanshi, Prafull Pandey, Amreesh Chandra, Chandra Sekhar Tiwary

{"title":"Magnetic Field Effects in 2D Manganese Ditelluride Supercapacitors","authors":"Chinmayee Chowde Gowda, Debabrata Mandal, Dharita Chandravanshi, Prafull Pandey, Amreesh Chandra, Chandra Sekhar Tiwary","doi":"10.1002/ente.202500170","DOIUrl":"https://doi.org/10.1002/ente.202500170","url":null,"abstract":"The specific capacitance of the material is significantly influenced by the structure's morphology. It thus becomes essential for supercapacitor materials to offer an increased surface area for redox activity. Recent exploration on telluride-based materials has garnered attention. As compared to the state-of-the-art transition metal supercapacitors, tellurides offer a wide voltage window of operation and a stable morphology. High specific capacitance of 135 F g−1 at 0.5 A g−1 for 2D manganese telluride (2D MnTe2). This is approximately twice the specific capacitance as compared to its bulk counterpart (68 F g−1) at 0.5 A g−1. The changes in specific capacitance on application of magnetic fields are also tested. The morphological and chemical changes in the sample after the electrochemical measurements utilizing post-X-ray diffraction, post-X-ray photoelectron spectroscopy, electrochemical impedance spectroscopy, and post-scanning electron microscopy are analyzed. A symmetric device (coin cell) is fabricated with 2D MnTe2 which has a specific capacitance of ≈65 F g−1 at 1 A g−1 with an operating voltage window 1.2 V. Due to its large surface area and the amount of surface redox reactions occurring at the electrode, the 2D MnTe2 electrode shows excellent rate capability. Herein, 2D tellurides can be a valuable addition providing a stable morphology for supercapacitor device operation.","PeriodicalId":11573,"journal":{"name":"Energy technology","volume":"13 10","pages":""},"PeriodicalIF":3.6,"publicationDate":"2025-04-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145224247","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Engineering a Novel Ceramic Composite for High-Temperature Thermal Insulation 设计一种新型高温隔热陶瓷复合材料

IF 3.6 4区工程技术

Energy technology Pub Date : 2025-04-21 DOI: 10.1002/ente.202401725

Chandan Mukherjee, Abhinandan Banerjee, Sudipto Mukhopadhyay

{"title":"Engineering a Novel Ceramic Composite for High-Temperature Thermal Insulation","authors":"Chandan Mukherjee, Abhinandan Banerjee, Sudipto Mukhopadhyay","doi":"10.1002/ente.202401725","DOIUrl":"https://doi.org/10.1002/ente.202401725","url":null,"abstract":"Thermal insulations play a pivotal role in energy conservation and carbon footprint reduction by mitigating energy losses at elevated temperatures. The thermal insulation of large energy systems faces challenges of in situ application and rise in thermal conductivity of the insulation with the increasing application surface temperature. This work develops, characterizes, and investigates a high-temperature ceramic composite (HTCC) insulation to address these challenges for high-temperature (≥300 °C) applications. Ceramic wool fiber, hollow ceramic microspheres, and silica form a multiscale porous structure in the HTCC that minimizes heat loss at high temperatures due to the infinite hot plate effect and phonon scattering phenomena. The rise in thermal conductivity for HTCC is 38%, whereas for conventional insulation, ceramic fiber (CF) it is 56%, when the application temperature increases from 300 to 500 °C. Moreover, the thermal diffusivity of the developed composite is 58% lower than CF. The efficacy of the HTCC is investigated experimentally using a model of thermal energy storage. The HTCC insulation, at 55% less thickness, reduces the heat loss by 37%, saving around 4780 kWh m−2 yearly compared to conventional insulation. Significant energy savings are expected when HTCC is applied to large-scale industrial energy systems.","PeriodicalId":11573,"journal":{"name":"Energy technology","volume":"13 10","pages":""},"PeriodicalIF":3.6,"publicationDate":"2025-04-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145224246","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Matching of Porous Carbon and Adsorbed Ions for High-Specific-Energy Asymmetric Supercapacitors 高比能非对称超级电容器中多孔碳与吸附离子的匹配

IF 3.6 4区工程技术

Energy technology Pub Date : 2025-04-21 DOI: 10.1002/ente.202402028

Pan Liu, Peng Zhang, Zhenlei Chen, Xingda Wang, Qingyin Zhang, Zhiqiang Shi, Yongnan Zhao

{"title":"Matching of Porous Carbon and Adsorbed Ions for High-Specific-Energy Asymmetric Supercapacitors","authors":"Pan Liu, Peng Zhang, Zhenlei Chen, Xingda Wang, Qingyin Zhang, Zhiqiang Shi, Yongnan Zhao","doi":"10.1002/ente.202402028","DOIUrl":"https://doi.org/10.1002/ente.202402028","url":null,"abstract":"In order to improve the energy density and stable operating voltage of the supercapacitor, asymmetric supercapacitors (ASCs) are designed utilizing mesoporous carbon (MC) as the anode, activated carbon (AC) as the cathode, and 1 mol kg−1 (1 m) tetraethylammonium tetrafluoroborate/propylene carbonate (TEA-BF4/PC) as the electrolyte. In ASCs, the MC anode provides broad ion transport channels and significant charge storage capacity for TEA+, while the AC cathode, with its large specific surface area, offers numerous adsorption sites for BF4−. Benefiting from the different porous materials matched with adsorbed ions, ASCs significantly enhance the rate performance and high-voltage stability of the device. Electrochemical testing demonstrates that the AC//MC ASCs exhibit an outstanding discharge capacitance of 121 F g−1 at a current density of 0.1 A g−1 at 3.2 V, which is sustained at about 65% at 10 A g−1. Additionally, the device achieves a remarkable energy density of 43.3 Wh kg−1 and largest power density of 7.3 kW kg−1. This work provides theoretical direction for the design of electrode materials and process optimization in high-specific-energy double-layer capacitors.","PeriodicalId":11573,"journal":{"name":"Energy technology","volume":"13 9","pages":""},"PeriodicalIF":3.6,"publicationDate":"2025-04-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145110678","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Hybrid Low-Dimensional Perovskites Passivation for Efficient Two-Step Assistance-Free Blade-Coated FAPbI3 Solar Cells 高效两步无辅助叶片涂层FAPbI3太阳能电池的低维钙钛矿杂化

IF 3.6 4区工程技术

Energy technology Pub Date : 2025-04-20 DOI: 10.1002/ente.202500066

Jingcheng Xu, Shuo Ding, Xinjian Li, Zhuoyuan Kong, Guohua Jia, Chaoyu Xiang

{"title":"Hybrid Low-Dimensional Perovskites Passivation for Efficient Two-Step Assistance-Free Blade-Coated FAPbI3 Solar Cells","authors":"Jingcheng Xu, Shuo Ding, Xinjian Li, Zhuoyuan Kong, Guohua Jia, Chaoyu Xiang","doi":"10.1002/ente.202500066","DOIUrl":"https://doi.org/10.1002/ente.202500066","url":null,"abstract":"Scalable deposition of high-efficient PSCs is crucial for accelerating their commercial application. However, in two-step blade coating process, the incomplete reaction between organic salts and the predeposited PbI2 layer leads to a large amount of excess PbI2, which is detrimental to the efficiency and long-term stability of perovskite films. Phenethylammonium iodide (PEAI) can convert residual PbI2 into 2D perovskite, which is an effective strategy for improving the performance of perovskite. However, there is still a significant amount of residual PbI2 after treatment. Benzamidine hydrochloride (PFACl) has been proven to easily react with residual lead iodide to form 1D perovskite, significantly reducing the residual lead iodide. In this work, it combines PEAI with PFACl to develop a novel 1D/2D low-dimensional perovskite composite structure. By using the 1D perovskite with lower reaction energy and 2D perovskite in synergy, this work more effectively removes residual lead iodide, thus achieving a two-step blade coating process for perovskite preparation without additional assistance. In small-area PSCs, the efficiency of PFACl/PEAI treated PSCs increases from 20.5% to 22.71%. Additionally, the encapsulated devices treated with PFACl/PEAI maintain 91% of their initial efficiency after being stored in dry air for 1440 h.","PeriodicalId":11573,"journal":{"name":"Energy technology","volume":"13 10","pages":""},"PeriodicalIF":3.6,"publicationDate":"2025-04-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145224238","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A Capacity Prediction Method for Lithium-Ion Batteries in the Production Stage Based on Multiscale Interactive Attention and Hybrid Driving Methods 基于多尺度交互关注和混合驱动的锂离子电池生产阶段容量预测方法

IF 3.6 4区工程技术

Energy technology Pub Date : 2025-04-20 DOI: 10.1002/ente.202500080

Zhengyu Liu, Tong Sun, Rui Xu, Tong Wu, Yewei Wang

{"title":"A Capacity Prediction Method for Lithium-Ion Batteries in the Production Stage Based on Multiscale Interactive Attention and Hybrid Driving Methods","authors":"Zhengyu Liu, Tong Sun, Rui Xu, Tong Wu, Yewei Wang","doi":"10.1002/ente.202500080","DOIUrl":"https://doi.org/10.1002/ente.202500080","url":null,"abstract":"In the production process of lithium-ion batteries, it is necessary to assemble cells with similar capacities into battery packs. However, traditional capacity measurement methods require a significant amount of time, energy, and cost. Therefore, fast and accurate prediction of the capacity for each lithium-ion battery cell in the production stage is of crucial importance. To address these issues, this article proposes a hybrid-driving method based on multiscale interactive attention (MIA) for lithium-ion battery capacity prediction. This method extracts capacity-related features from three perspectives (temporal, frequency, and thermal imaging). The features are then further extracted and optimized through the backbone network embedded with MIA. Finally, a bidirectional gated recurrent unit network is employed to establish global dependency relationships and obtain the capacity prediction for each cell. The effectiveness of MIA is validated through ablation experiments and testing with real-world production data, while comparative analysis with state-of-the-art models demonstrated the superior performance of the proposed capacity prediction framework in this study.","PeriodicalId":11573,"journal":{"name":"Energy technology","volume":"13 10","pages":""},"PeriodicalIF":3.6,"publicationDate":"2025-04-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145224239","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Bark-Derived Oxygen-Doped Porous Hard Carbon Anodes for Potassium-Ion Batteries 钾离子电池用树皮衍生的掺氧多孔硬碳阳极

IF 3.6 4区工程技术

Energy technology Pub Date : 2025-04-10 DOI: 10.1002/ente.202402287

Can Li, Yongfeng Zhu, Shengdi Li, Xiaowen Liu, Qingang Xiong

{"title":"Bark-Derived Oxygen-Doped Porous Hard Carbon Anodes for Potassium-Ion Batteries","authors":"Can Li, Yongfeng Zhu, Shengdi Li, Xiaowen Liu, Qingang Xiong","doi":"10.1002/ente.202402287","DOIUrl":"https://doi.org/10.1002/ente.202402287","url":null,"abstract":"Oxygen content and specific surface area are key factors affecting the electrochemical performance of biomass-derived hard carbon anodes for potassium-ion batteries (PIBs). Increasing oxygen content enhances potassium storage, improving cycle stability and rate performance. Furthermore, optimizing porous structures boosts specific surface area, facilitating potassium ion diffusion and increasing capacity. Herein, a cost-effective and environmentally friendly strategy is proposed, using bark as a precursor, oxygen as the oxidant, and pluronic P123 as the template agent. Oxygen-doped porous hard carbon anodes are synthesized via pre-oxidation and hydrothermal processing. These anodes exhibit large interlayer spacing, high specific surface area, and significant oxygen content, resulting in excellent electrochemical stability and capacity. The anodes maintain a high specific discharge capacity of 230.2 mAh g−1 after 200 cycles at 0.1 A g−1, with minimal capacity loss. After 3000 cycles at 1 A g−1, the capacity retention is 80%. This work demonstrates an effective method for utilizing bark to produce high-performance hard carbon anodes for PIBs, advancing the development of bark-derived materials for energy storage.","PeriodicalId":11573,"journal":{"name":"Energy technology","volume":"13 10","pages":""},"PeriodicalIF":3.6,"publicationDate":"2025-04-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145224399","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0