ACS Energy Letters 最新文献

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Correction to “Impurity Tolerance of Unsaturated Ni-N-C Active Sites for Practical Electrochemical CO2 Reduction” 对 "用于实际电化学二氧化碳还原的不饱和 Ni-N-C 活性位点的杂质耐受性 "的更正
IF 22 1区 材料科学
ACS Energy Letters Pub Date : 2024-11-26 DOI: 10.1021/acsenergylett.4c03153
Josh Leverett, Jodie A. Yuwono, Priyank Kumar, Thanh Tran-Phu, Jiangtao Qu, Julie Cairney, Xichu Wang, Alexandr N. Simonov, Rosalie K. Hocking, Bernt Johannessen, Liming Dai, Rahman Daiyan, Rose Amal
{"title":"Correction to “Impurity Tolerance of Unsaturated Ni-N-C Active Sites for Practical Electrochemical CO2 Reduction”","authors":"Josh Leverett, Jodie A. Yuwono, Priyank Kumar, Thanh Tran-Phu, Jiangtao Qu, Julie Cairney, Xichu Wang, Alexandr N. Simonov, Rosalie K. Hocking, Bernt Johannessen, Liming Dai, Rahman Daiyan, Rose Amal","doi":"10.1021/acsenergylett.4c03153","DOIUrl":"https://doi.org/10.1021/acsenergylett.4c03153","url":null,"abstract":"The authors regret that the affiliation recorded for Bernt Johannessen is incomplete. The full affiliation should be “Australian Synchrotron, ANSTO, Clayton VIC 3168, Australia”. The authors would like to apologize for any inconvenience caused. The correction does not in any way affect the results or conclusions of the publication. This article has not yet been cited by other publications.","PeriodicalId":16,"journal":{"name":"ACS Energy Letters ","volume":"37 1","pages":""},"PeriodicalIF":22.0,"publicationDate":"2024-11-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142712582","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Fracture Dynamics in Silicon Anode Solid-State Batteries 硅阳极固态电池中的断裂动力学
IF 22 1区 材料科学
ACS Energy Letters Pub Date : 2024-11-26 DOI: 10.1021/acsenergylett.4c02800
Douglas Lars Nelson, Stephanie E. Sandoval, Jaechan Pyo, Donald Bistri, Talia A. Thomas, Kelsey Anne Cavallaro, John A. Lewis, Abhinav S. Iyer, Pavel Shevchenko, Claudio V. Di Leo, Matthew T. McDowell
{"title":"Fracture Dynamics in Silicon Anode Solid-State Batteries","authors":"Douglas Lars Nelson, Stephanie E. Sandoval, Jaechan Pyo, Donald Bistri, Talia A. Thomas, Kelsey Anne Cavallaro, John A. Lewis, Abhinav S. Iyer, Pavel Shevchenko, Claudio V. Di Leo, Matthew T. McDowell","doi":"10.1021/acsenergylett.4c02800","DOIUrl":"https://doi.org/10.1021/acsenergylett.4c02800","url":null,"abstract":"Solid-state batteries (SSBs) with silicon anodes could enable improved safety and energy density compared to lithium-ion batteries. However, degradation arising from the massive volumetric changes of silicon anodes during cycling is not well understood in solid-state systems. Here, we use <i>operando</i> X-ray computed microtomography to reveal micro- to macro-scale chemo-mechanical degradation processes of silicon anodes in SSBs. Mud-type channel cracks driven by biaxial tensile stress form across the electrode during delithiation. We also find detrimental cracks at the silicon/solid electrolyte interface that form due to local reaction competition between neighboring domains of different sizes. Continuum phase-field damage modeling quantifies stress-driven channel cracking and shows that the lithiated silicon stress state is critical for determining the extent of interfacial fracture. This work reveals the mechanisms that govern SSBs compared to conventional lithium-ion batteries and provides guidelines for engineering chemo-mechanically resilient electrodes for high-energy batteries.","PeriodicalId":16,"journal":{"name":"ACS Energy Letters ","volume":"16 1","pages":""},"PeriodicalIF":22.0,"publicationDate":"2024-11-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142718902","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Advanced Impedance Analysis for Performance Degradation during Low-Temperature CO2 Electroreduction 对低温二氧化碳电还原过程中的性能退化进行先进的阻抗分析
IF 22 1区 材料科学
ACS Energy Letters Pub Date : 2024-11-26 DOI: 10.1021/acsenergylett.4c02673
Qinhao Chen, Alexander Kube, Dennis Kopljar, Kaspar Andreas Friedrich
{"title":"Advanced Impedance Analysis for Performance Degradation during Low-Temperature CO2 Electroreduction","authors":"Qinhao Chen, Alexander Kube, Dennis Kopljar, Kaspar Andreas Friedrich","doi":"10.1021/acsenergylett.4c02673","DOIUrl":"https://doi.org/10.1021/acsenergylett.4c02673","url":null,"abstract":"Electrochemical impedance spectroscopy (EIS) is a powerful tool commonly used to study electrochemical systems. Nevertheless, its application in CO<sub>2</sub> electroreduction has been so far limited due to its complex reaction mechanism and environment. Although initial findings have demonstrated the viability of applying EIS analysis in CO<sub>2</sub> electrolyzers, the assignment of individual processes in the impedance spectra remains ambiguous. Therefore, a more detailed investigation, especially focused on its application in evaluating degradation mechanisms, is essential. In this study, a stable gas diffusion electrode (GDE) system was developed for a comprehensive EIS and distribution of relaxation time (DRT) evaluation to assess key degradation mechanisms under accelerated stress conditions such as high current density and low operating temperature. Validated by post-mortem analysis and complementary methods, we demonstrate the viability of this approach for operando monitoring of CO<sub>2</sub> electroreduction by assigning individual mechanistic processes in the GDE and linking them to performance degradation over time.","PeriodicalId":16,"journal":{"name":"ACS Energy Letters ","volume":"68 1","pages":""},"PeriodicalIF":22.0,"publicationDate":"2024-11-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142718901","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Plasma-Catalyzed Sustainable Nanostructured Carbon Synthesis: Advancing Chemical-Looping CO2 Fixation 等离子催化的可持续纳米结构碳合成:推进化学循环二氧化碳固定技术
IF 22 1区 材料科学
ACS Energy Letters Pub Date : 2024-11-26 DOI: 10.1021/acsenergylett.4c02660
Xiaozhong Chen, Yuta Nishina, Giichiro Uchida, Tomohiro Nozaki
{"title":"Plasma-Catalyzed Sustainable Nanostructured Carbon Synthesis: Advancing Chemical-Looping CO2 Fixation","authors":"Xiaozhong Chen, Yuta Nishina, Giichiro Uchida, Tomohiro Nozaki","doi":"10.1021/acsenergylett.4c02660","DOIUrl":"https://doi.org/10.1021/acsenergylett.4c02660","url":null,"abstract":"Clean energy-driven high-flux CO-to-C conversion has become increasingly urgent following the recent validation of CO<sub>2</sub>-to-CO-to-C chemical looping. This approach addresses rising net carbon emissions and the growing demand for green nanocarbons, but the CO-to-C conversion limits process capacity. Meanwhile, sustainable nanocarbon production via mainstream thermal catalytic chemical vapor deposition of hydrocarbons faces bottlenecks. CO<sub>2</sub> is released during thermal reactions, and the process is hindered by the high temperatures, gas dilution requirements, rapid catalyst deactivation, and inconsistent carbon quality. Here, we report a strategy using cost-efficient iron oxides, combining nonthermal plasma, the Boudouard reaction, and fluidized bed technology for electrified high-flux CO-to-C conversion. This process integrates high carbon yield (&gt;228.9 g<sub>C</sub> g<sub>Fe</sub><sup>–1</sup>) and synthesis rate (30.2 g<sub>C</sub> g<sub>Fe</sub><sup>–1</sup> h<sup>–1</sup>), operates an electrically driven mode at a reduced temperature (577 °C), avoids catalyst deactivation (&gt;11 h), requires no gas dilution, and produces high-quality nanocarbons (nanofibers/nanocoils), demonstrating its industrial potential for sustainable nanocarbon synthesis and CO<sub>2</sub> fixation.","PeriodicalId":16,"journal":{"name":"ACS Energy Letters ","volume":"7 1","pages":""},"PeriodicalIF":22.0,"publicationDate":"2024-11-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142712583","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Fracture Dynamics in Silicon Anode Solid-State Batteries
IF 19.3 1区 材料科学
ACS Energy Letters Pub Date : 2024-11-26 DOI: 10.1021/acsenergylett.4c0280010.1021/acsenergylett.4c02800
Douglas Lars Nelson, Stephanie E. Sandoval, Jaechan Pyo, Donald Bistri, Talia A. Thomas, Kelsey Anne Cavallaro, John A. Lewis, Abhinav S. Iyer, Pavel Shevchenko, Claudio V. Di Leo* and Matthew T. McDowell*, 
{"title":"Fracture Dynamics in Silicon Anode Solid-State Batteries","authors":"Douglas Lars Nelson,&nbsp;Stephanie E. Sandoval,&nbsp;Jaechan Pyo,&nbsp;Donald Bistri,&nbsp;Talia A. Thomas,&nbsp;Kelsey Anne Cavallaro,&nbsp;John A. Lewis,&nbsp;Abhinav S. Iyer,&nbsp;Pavel Shevchenko,&nbsp;Claudio V. Di Leo* and Matthew T. McDowell*,&nbsp;","doi":"10.1021/acsenergylett.4c0280010.1021/acsenergylett.4c02800","DOIUrl":"https://doi.org/10.1021/acsenergylett.4c02800https://doi.org/10.1021/acsenergylett.4c02800","url":null,"abstract":"<p >Solid-state batteries (SSBs) with silicon anodes could enable improved safety and energy density compared to lithium-ion batteries. However, degradation arising from the massive volumetric changes of silicon anodes during cycling is not well understood in solid-state systems. Here, we use <i>operando</i> X-ray computed microtomography to reveal micro- to macro-scale chemo-mechanical degradation processes of silicon anodes in SSBs. Mud-type channel cracks driven by biaxial tensile stress form across the electrode during delithiation. We also find detrimental cracks at the silicon/solid electrolyte interface that form due to local reaction competition between neighboring domains of different sizes. Continuum phase-field damage modeling quantifies stress-driven channel cracking and shows that the lithiated silicon stress state is critical for determining the extent of interfacial fracture. This work reveals the mechanisms that govern SSBs compared to conventional lithium-ion batteries and provides guidelines for engineering chemo-mechanically resilient electrodes for high-energy batteries.</p>","PeriodicalId":16,"journal":{"name":"ACS Energy Letters ","volume":"9 12","pages":"6085–6095 6085–6095"},"PeriodicalIF":19.3,"publicationDate":"2024-11-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/epdf/10.1021/acsenergylett.4c02800","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142850820","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Rubidium Induced Phase Regulation for High-Performance Quasi-2D Perovskite Solar Cells 用于高性能准二维过氧化物太阳能电池的铷诱导相位调节技术
IF 22 1区 材料科学
ACS Energy Letters Pub Date : 2024-11-26 DOI: 10.1021/acsenergylett.4c02883
Bo Xu, Rong Yang, Yu Chen, Jinfei Zhou, Wen Liang Tan, Pinghui Yang, Fengwei Wang, Xiliu Wang, Wenbo Liu, Xuan Gao, Jingwei Li, Daliang Zhang, Christopher R. McNeill, Renzhi Li, Wei Huang, Jianpu Wang
{"title":"Rubidium Induced Phase Regulation for High-Performance Quasi-2D Perovskite Solar Cells","authors":"Bo Xu, Rong Yang, Yu Chen, Jinfei Zhou, Wen Liang Tan, Pinghui Yang, Fengwei Wang, Xiliu Wang, Wenbo Liu, Xuan Gao, Jingwei Li, Daliang Zhang, Christopher R. McNeill, Renzhi Li, Wei Huang, Jianpu Wang","doi":"10.1021/acsenergylett.4c02883","DOIUrl":"https://doi.org/10.1021/acsenergylett.4c02883","url":null,"abstract":"Quasi-two-dimensional (2D) perovskites are notable for their diverse formulations and environmental stability. However, solution-processed quasi-2D perovskites often exhibit inherent multiple-quantum-well structures with broad phase distributions, limiting their efficiency in photovoltaic applications. Here, we demonstrate that incorporating rubidium ions effectively narrows the phase distribution in quasi-2D perovskite by accelerating the formation of the <i>n</i> = 1 2D perovskite phase during the initial crystallization stage. This leads to a decrease in the remaining free organic spacer cations, which in turn limits the transition to medium-<i>n</i> phases (<i>n</i> = 3, 4) and promotes the formation of high-quality 3D-like or large-<i>n</i> perovskites, ultimately enhancing charge transport of quasi-2D perovskite. Consequently, we achieve quasi-2D perovskite solar cells with a champion power conversion efficiency of 21.9%. Furthermore, the thermal stability of the unencapsulated devices containing rubidium is significantly improved, with the T80 lifetime under continuous 60 °C stress increasing from 1150 to over 3000 h.","PeriodicalId":16,"journal":{"name":"ACS Energy Letters ","volume":"20 1","pages":""},"PeriodicalIF":22.0,"publicationDate":"2024-11-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142712581","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Chemically Designed Crystal Growth Termination for High-Luminance and Stable Polycrystalline Perovskite LEDs
IF 19.3 1区 材料科学
ACS Energy Letters Pub Date : 2024-11-25 DOI: 10.1021/acsenergylett.4c0256110.1021/acsenergylett.4c02561
Jeong Wook Jang, Joo Yoon Woo, Cheong Beom Lee, Wan Dong Kim, Jongho Park, Daehwan Kim, Yepin Zhao, Jun-Su Yeo, Min Gyo Kim, Sang Hyun Nam, Su Hwan Lee, Young-Hoon Kim, Dong Ryeol Lee, Yang Yang, Kyeounghak Kim and Tae-Hee Han*, 
{"title":"Chemically Designed Crystal Growth Termination for High-Luminance and Stable Polycrystalline Perovskite LEDs","authors":"Jeong Wook Jang,&nbsp;Joo Yoon Woo,&nbsp;Cheong Beom Lee,&nbsp;Wan Dong Kim,&nbsp;Jongho Park,&nbsp;Daehwan Kim,&nbsp;Yepin Zhao,&nbsp;Jun-Su Yeo,&nbsp;Min Gyo Kim,&nbsp;Sang Hyun Nam,&nbsp;Su Hwan Lee,&nbsp;Young-Hoon Kim,&nbsp;Dong Ryeol Lee,&nbsp;Yang Yang,&nbsp;Kyeounghak Kim and Tae-Hee Han*,&nbsp;","doi":"10.1021/acsenergylett.4c0256110.1021/acsenergylett.4c02561","DOIUrl":"https://doi.org/10.1021/acsenergylett.4c02561https://doi.org/10.1021/acsenergylett.4c02561","url":null,"abstract":"<p >Chemically synthesized colloidal metal halide perovskite (MHP) nanocrystals (NCs) have high luminous efficiency, but they have long-chain organic ligands bound perpendicularly to the surface, which impede charge injection and transport, thereby causing charge accumulation and consequent degradation. This work presents an <i>in situ</i> crystallization strategy for polycrystalline MHP light emitters by altering the surface chemistry of MHPs, followed by lateral surface capping with a linear ionic homopolymer. This strategy directs <i>in situ</i> crystal growth termination to achieve nanocuboid grains that have well-terminated surfaces, resulting in enhanced photophysical properties and electrical homogeneity. Consequently, light-emitting diodes with the surface-tailored light emitters exhibit high luminance (&gt;150 000 cd m<sup>–2</sup>), high efficiency at elevated luminance (&gt;102.1 cd A<sup>–1</sup> at 100 000 cd m<sup>–2</sup>), low efficiency roll-off (0.58% reduction to emit 100 000 cd m<sup>–2</sup>), and long-term stability (<i>T</i><sub>95</sub> ≈ 243 h), simultaneously. This <i>in situ</i> crystallization combines the advantages of colloidal NCs and polycrystalline thin films while eliminating critical drawbacks of each approach.</p>","PeriodicalId":16,"journal":{"name":"ACS Energy Letters ","volume":"9 12","pages":"6029–6038 6029–6038"},"PeriodicalIF":19.3,"publicationDate":"2024-11-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142843585","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Quantitative Analysis of the Coupled Mechanisms of Lithium Plating, SEI Growth, and Electrolyte Decomposition in Fast Charging Battery 快速充电电池中的镀锂、SEI 生长和电解质分解耦合机制的定量分析
IF 22 1区 材料科学
ACS Energy Letters Pub Date : 2024-11-25 DOI: 10.1021/acsenergylett.4c02898
Yufan Peng, Meifang Ding, Ke Zhang, Huiyan Zhang, Yonggang Hu, Ying Lin, Wenxuan Hu, Yiqing Liao, Shijun Tang, Jinding Liang, Yimin Wei, Zhengliang Gong, Yanting Jin, Yong Yang
{"title":"Quantitative Analysis of the Coupled Mechanisms of Lithium Plating, SEI Growth, and Electrolyte Decomposition in Fast Charging Battery","authors":"Yufan Peng, Meifang Ding, Ke Zhang, Huiyan Zhang, Yonggang Hu, Ying Lin, Wenxuan Hu, Yiqing Liao, Shijun Tang, Jinding Liang, Yimin Wei, Zhengliang Gong, Yanting Jin, Yong Yang","doi":"10.1021/acsenergylett.4c02898","DOIUrl":"https://doi.org/10.1021/acsenergylett.4c02898","url":null,"abstract":"Lithium ion battery (LIBs) degradation under fast-charging conditions limits its performance, yet systematic and quantitative studies of its mechanisms are still lacking. Here, we used dynamic electrochemical impedance spectroscopy (DEIS), mass spectrometry titration (MST), nuclear magnetic resonance (NMR), and gas chromatography–mass spectrometry (GC-MS) to reveal the degradation mechanisms in LiFePO<sub>4</sub>//graphite batteries at different charging rates. DEIS reveals three distinctive lithium plating processes: no lithium plating (1 and 2 C), lithium nucleation and growth (3 C), and lithium dendrite growth (4 to 6 C). In aged batteries, Li/Li<sub><i>x</i></sub>C<sub>6</sub> (<i>x</i> &lt; 1), organic SEI components, and VC decomposition increase exponentially with increasing charging rate, while inorganic SEI increases slowly. Lithium dendrite growth (trigger mechanism) under fast charging conditions selectively induces VC decomposition and organic SEI formation (coupling mechanism) and results in lithium dendrite detachment forming “dead” lithium (accompanying mechanism), which together lead to rapid battery degradation at high charging rates.","PeriodicalId":16,"journal":{"name":"ACS Energy Letters ","volume":"7 1","pages":""},"PeriodicalIF":22.0,"publicationDate":"2024-11-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142696682","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Quantitative Analysis of the Coupled Mechanisms of Lithium Plating, SEI Growth, and Electrolyte Decomposition in Fast Charging Battery
IF 19.3 1区 材料科学
ACS Energy Letters Pub Date : 2024-11-25 DOI: 10.1021/acsenergylett.4c0289810.1021/acsenergylett.4c02898
Yufan Peng, Meifang Ding, Ke Zhang, Huiyan Zhang, Yonggang Hu, Ying Lin, Wenxuan Hu, Yiqing Liao, Shijun Tang, Jinding Liang, Yimin Wei*, Zhengliang Gong, Yanting Jin* and Yong Yang*, 
{"title":"Quantitative Analysis of the Coupled Mechanisms of Lithium Plating, SEI Growth, and Electrolyte Decomposition in Fast Charging Battery","authors":"Yufan Peng,&nbsp;Meifang Ding,&nbsp;Ke Zhang,&nbsp;Huiyan Zhang,&nbsp;Yonggang Hu,&nbsp;Ying Lin,&nbsp;Wenxuan Hu,&nbsp;Yiqing Liao,&nbsp;Shijun Tang,&nbsp;Jinding Liang,&nbsp;Yimin Wei*,&nbsp;Zhengliang Gong,&nbsp;Yanting Jin* and Yong Yang*,&nbsp;","doi":"10.1021/acsenergylett.4c0289810.1021/acsenergylett.4c02898","DOIUrl":"https://doi.org/10.1021/acsenergylett.4c02898https://doi.org/10.1021/acsenergylett.4c02898","url":null,"abstract":"<p >Lithium ion battery (LIBs) degradation under fast-charging conditions limits its performance, yet systematic and quantitative studies of its mechanisms are still lacking. Here, we used dynamic electrochemical impedance spectroscopy (DEIS), mass spectrometry titration (MST), nuclear magnetic resonance (NMR), and gas chromatography–mass spectrometry (GC-MS) to reveal the degradation mechanisms in LiFePO<sub>4</sub>//graphite batteries at different charging rates. DEIS reveals three distinctive lithium plating processes: no lithium plating (1 and 2 C), lithium nucleation and growth (3 C), and lithium dendrite growth (4 to 6 C). In aged batteries, Li/Li<sub><i>x</i></sub>C<sub>6</sub> (<i>x</i> &lt; 1), organic SEI components, and VC decomposition increase exponentially with increasing charging rate, while inorganic SEI increases slowly. Lithium dendrite growth (trigger mechanism) under fast charging conditions selectively induces VC decomposition and organic SEI formation (coupling mechanism) and results in lithium dendrite detachment forming “dead” lithium (accompanying mechanism), which together lead to rapid battery degradation at high charging rates.</p>","PeriodicalId":16,"journal":{"name":"ACS Energy Letters ","volume":"9 12","pages":"6022–6028 6022–6028"},"PeriodicalIF":19.3,"publicationDate":"2024-11-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142843584","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Enhanced Power Conversion Efficiency in Tin Halide Perovskite Solar Cells with Zinc Iodide Interlayers 利用碘化锌夹层提高卤化锡过氧化物太阳能电池的功率转换效率
IF 22 1区 材料科学
ACS Energy Letters Pub Date : 2024-11-25 DOI: 10.1021/acsenergylett.4c02700
Chien-Yu Chen, Fuyuki Harata, Richard Murdey, Atsushi Wakamiya
{"title":"Enhanced Power Conversion Efficiency in Tin Halide Perovskite Solar Cells with Zinc Iodide Interlayers","authors":"Chien-Yu Chen, Fuyuki Harata, Richard Murdey, Atsushi Wakamiya","doi":"10.1021/acsenergylett.4c02700","DOIUrl":"https://doi.org/10.1021/acsenergylett.4c02700","url":null,"abstract":"Optimal alignment of the energy levels can improve the performance of perovskite solar cells. In this work, we show that energy level alignment can be enhanced by a vacuum-deposited zinc iodide (ZnI<sub>2</sub>) layer inserted between tin perovskite and a C<sub>60</sub> electron transport layer. The open-circuit voltage of FA<sub>0.75</sub>MA<sub>0.25</sub>SnI<sub>3</sub> (FA: formamidinium; MA: methylammonium) solar cells increased by more than 0.1 V, while the power conversion efficiency increased from 10.2% to 12.8%. The shelf lifetimes of the devices are also improved. ZnI<sub>2</sub> interlayers are also effective with other perovskites compositions, such as FASnI<sub>3</sub> and PEA<sub>0.15</sub>FA<sub>0.85</sub>SnI<sub>3</sub> (PEA: phenethylammonium), with their device efficiencies increasing from 6.8% to 11.6% and from 6.2% to 9.5%, respectively. The energy level diagram, derived from Kelvin probe measurements, suggests that ZnI<sub>2</sub> interlayers reduce the band offset between perovskite and C<sub>60</sub>. As a result, the electron accumulation width in C<sub>60</sub> is reduced, mitigating nonradiative charge carrier recombination losses and increasing the device performance.","PeriodicalId":16,"journal":{"name":"ACS Energy Letters ","volume":"7 1","pages":""},"PeriodicalIF":22.0,"publicationDate":"2024-11-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142696685","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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