Advanced Energy Materials最新文献_第7页

Siloxane as Humidity-Resistant and Stabilizing Additive for Ambient-Processed Organic Solar Cells

IF 27.8 1区材料科学

Advanced Energy Materials Pub Date : 2024-12-08 DOI: 10.1002/aenm.202404679

Haizhen Liu, Xianglun Xie, Lianjie Zhang, Jun Wang, Junwu Chen

{"title":"Siloxane as Humidity-Resistant and Stabilizing Additive for Ambient-Processed Organic Solar Cells","authors":"Haizhen Liu, Xianglun Xie, Lianjie Zhang, Jun Wang, Junwu Chen","doi":"10.1002/aenm.202404679","DOIUrl":"https://doi.org/10.1002/aenm.202404679","url":null,"abstract":"High-performing organic solar cells (OSCs) being processed in ambient conditions and possessing long-term stability are desired toward commercialization. Here, resultantly bifunctional additive is proposed for organic active layer, which can greatly enhance humidity endurance during the air-processing of the active layer and device stability in the meantime. Intriguingly, with 1% octamethyltrisiloxane (3Si) as the additive, casting PM6:L8-BO active layer even in 90% relative humidity (RH) air could show comparable efficiency to that in N2 condition. Furthermore, the 3Si-processed active layers also display remarkably enhanced thermal and light stabilities in conventional OSCs. After thermal aging at 85 °C for 1000 h and simulated solar light aging with UV band at 100 mW cm−2 and 55°C for 1000 h, the 3Si-processed PM6:L8-BO binary OSCs maintain 91.6% and 86.1% of the initial efficiency, leading to final averaged efficiencies of 16.17% and 15.42%, respectively. The results represent the most stable OSCs based on additive strategy. The universality of siloxane as a humidity-resistant and stabilizing agent is also confirmed with other active layer systems, paving a way for broader application of the bifunctional additive.","PeriodicalId":111,"journal":{"name":"Advanced Energy Materials","volume":"125 19 1","pages":""},"PeriodicalIF":27.8,"publicationDate":"2024-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142793189","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

Streamlined Phase Transition and Reaction Compensation in Hybrid Evaporation-Solution Deposited Inverted Perovskite Solar Cells

IF 27.8 1区材料科学

Advanced Energy Materials Pub Date : 2024-12-08 DOI: 10.1002/aenm.202404954

Jiahao Wang, Yuan Zhou, Wei Ai, Dexin Pu, Hongyi Fang, Shiqiang Fu, Hongling Guan, Wenlong Shao, Guoyi Chen, Weiwei Meng, Guojia Fang, Weijun Ke

{"title":"Streamlined Phase Transition and Reaction Compensation in Hybrid Evaporation-Solution Deposited Inverted Perovskite Solar Cells","authors":"Jiahao Wang, Yuan Zhou, Wei Ai, Dexin Pu, Hongyi Fang, Shiqiang Fu, Hongling Guan, Wenlong Shao, Guoyi Chen, Weiwei Meng, Guojia Fang, Weijun Ke","doi":"10.1002/aenm.202404954","DOIUrl":"https://doi.org/10.1002/aenm.202404954","url":null,"abstract":"Perovskite solar cells (PSCs) represent a promising technology for next-generation photovoltaics, yet scaling up from laboratory to industrial production via the solution spin-coating method encounters significant challenges. Vacuum deposition offers a potential alternative but struggles with controlling perovskite phases and ensuring sufficient precursor reactions. Here, the study presents a hybrid evaporation-solution approach using a large cation-based pseudo-halogen anion salt (guanidine thiocyanate) and a compensating cation salt (methylammonium iodide) as co-additives to finely modulate the phase transition process. This approach eliminates the need for intermediate-phase transitions, promotes sufficient precursor reactions, and facilitates the formation of highly oriented α-phase perovskites prior to annealing. Consequently, it prevents detrimental δ-phase formation, yielding enlarged, homogeneous perovskite grains with significantly reduced defects. The resulting p-i-n-structured PSCs achieve a maximum efficiency of 24.72% and a low open-circuit voltage loss of 0.377 V, coupled with significantly improved stability. The work integrates the advantages of vacuum deposition and solution processing, providing new insights into perovskite phase transitions and paving the way for the efficient, scalable production of high-performance PSCs.","PeriodicalId":111,"journal":{"name":"Advanced Energy Materials","volume":"38 1","pages":""},"PeriodicalIF":27.8,"publicationDate":"2024-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142793192","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

Long-Durable Potassium Ion Batteries Enabled by Medium-Entropy Lattice Engineering on Prussian Blue Analogues Cathodes

IF 27.8 1区材料科学

Advanced Energy Materials Pub Date : 2024-12-08 DOI: 10.1002/aenm.202405007

Yangsu Wang, Shenghui Zhou, Nan Li, Jiajia Han, Shilin Zhang, Zilong Zhuang, Zhefei Sun, Xuechun Wang, Xiaoyu Wu, Zhilin Chen, Jianhai Pan, Yanbin Shen, Jijian Xu, Yujie Zhu, Dong-Liang Peng, Zaiping Guo, Qiaobao Zhang

{"title":"Long-Durable Potassium Ion Batteries Enabled by Medium-Entropy Lattice Engineering on Prussian Blue Analogues Cathodes","authors":"Yangsu Wang, Shenghui Zhou, Nan Li, Jiajia Han, Shilin Zhang, Zilong Zhuang, Zhefei Sun, Xuechun Wang, Xiaoyu Wu, Zhilin Chen, Jianhai Pan, Yanbin Shen, Jijian Xu, Yujie Zhu, Dong-Liang Peng, Zaiping Guo, Qiaobao Zhang","doi":"10.1002/aenm.202405007","DOIUrl":"https://doi.org/10.1002/aenm.202405007","url":null,"abstract":"Given their structural merits and electrochemical benefits, Prussian blue analogues (PBAs) hold great promise as cathode materials for potassium ion batteries (PIBs). However, these cathodes face formidable hurdles by structural failure and poor rate capability, primarily resulting from significant volumetric changes and sluggish kinetics during repeated intercalation/deintercalation of bulky K+ ions. Theoretically, the study reveals explicitly that quaternary medium-entropy PBAs (Q-ME-PBAs), composed of Fe, Ni, Co, and Cu, demonstrate minimal lattice volume variations and low diffusion barriers during K+ ion interactions. This endows Q-ME-PBA with favorable ability to induce significant 3D lattice distortion, enabling the material to endure structural alterations during K+ ion movements and reinforce phase stability. Consequently, leveraging the structural and compositional advantages, the resultant Q-ME-PBAs cathode showcases exceptional cycling performance, maintaining over 90% capacity retention after 300 cycles at 0.25 C with a high initial coulombic efficiency of 94.4% and retaining 74.7% capacity even after an ultra-long 10 000 cycles at 3.75 C over 147 days. Notably, full cells paired with hard carbon and graphite anodes show outstanding cycling stability and rate capability. This study charts fresh design directions for crafting high-performance and durable cathodes through medium-entropy lattice engineering for advanced PIBs.","PeriodicalId":111,"journal":{"name":"Advanced Energy Materials","volume":"37 1","pages":""},"PeriodicalIF":27.8,"publicationDate":"2024-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142793195","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

Solvation Structure Engineering via Inorganic–Organic Composite Layer for Corrosion-Resistant Lithium Metal Anodes in High-Concentration Electrolyte

IF 27.8 1区材料科学

Advanced Energy Materials Pub Date : 2024-12-08 DOI: 10.1002/aenm.202403944

Youngil Roh, Hyeokjin Kwon, Jaewon Baek, Changhoon Park, Seongyeong Kim, Kahee Hwang, A Reum Ha, Seongmin Ha, Jongchan Song, Hee-Tak Kim

{"title":"Solvation Structure Engineering via Inorganic–Organic Composite Layer for Corrosion-Resistant Lithium Metal Anodes in High-Concentration Electrolyte","authors":"Youngil Roh, Hyeokjin Kwon, Jaewon Baek, Changhoon Park, Seongyeong Kim, Kahee Hwang, A Reum Ha, Seongmin Ha, Jongchan Song, Hee-Tak Kim","doi":"10.1002/aenm.202403944","DOIUrl":"https://doi.org/10.1002/aenm.202403944","url":null,"abstract":"High-concentration electrolytes have been reported to form an anion-derived, inorganic-rich solid electrolyte interphase on lithium metal electrodes; however, these electrodes suffer from high Li corrosion by the coordinated anions and consequent anion depletion. Herein, the study reports a composite layer comprising single-ion conducting ceramic (SICC) nanoparticles and a gel polymer electrolyte (GPE), which can suppress the Li corrosion in a high-concentration electrolyte based on lithium bis(fluorosulfonyl)imide (LiFSI) and a weakly solvating solvent (N,N-dimethylsulfamoyl fluoride, FSA). The lithium-ion space charges formed at the SICC/GPE interface reduce the coordination of anions in the composite layer, suppressing their decomposition. A Li | LiNi0.8Co0.1Mn0.1O2 (NCM811) pouch bi-cell with a composite layer-coated thin lithium metal anode (N/P = 1, thickness: 20 µm) delivers projected gravimetric (316 Wh kg−1) and projected volumetric (1433 Wh L−1) energy densities and exhibits stable operation for 350 cycles, with 70% capacity retention at 1/3 C charge–discharge rate. The engineering of the solvation structure through the inorganic–organic composite layer represents a practical strategy for developing corrosion-resistant lithium metal anodes in high-concentration electrolytes.","PeriodicalId":111,"journal":{"name":"Advanced Energy Materials","volume":"18 1","pages":""},"PeriodicalIF":27.8,"publicationDate":"2024-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142793186","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

Ion Redistribution Gel Electrolyte Dissipates Interfacial Turbulence for Aqueous Zinc-Ion Batteries

IF 27.8 1区材料科学

Advanced Energy Materials Pub Date : 2024-12-06 DOI: 10.1002/aenm.202404367

Yihan Yang, Zijian Wei, Sanlue Hu, Bo Tang, Guangmeng Qu, Chencheng Yue, Xinming Li, Cuiping Han

{"title":"Ion Redistribution Gel Electrolyte Dissipates Interfacial Turbulence for Aqueous Zinc-Ion Batteries","authors":"Yihan Yang, Zijian Wei, Sanlue Hu, Bo Tang, Guangmeng Qu, Chencheng Yue, Xinming Li, Cuiping Han","doi":"10.1002/aenm.202404367","DOIUrl":"https://doi.org/10.1002/aenm.202404367","url":null,"abstract":"Aqueous zinc-ion batteries (AZBs) degrade under a high current density due to the existence of interfacial turbulence with severe concentration polarization. Herein, an ion redistribution gel electrolyte is introduced to stabilize the electrode-electrolyte interface by regulating the ion density gradient. Negatively charged carboxymethyl groups in carboxymethyl starch ether polymer (PCMS) electrolytes can preferentially regulate the ion concentration at the anode interface. The quasi-solid PCMS gel electrolytes can dissipate the charge accumulation caused by ion concentration differences, which is beneficial for achieving excellent electrochemical stability at high current densities. As a result, the symmetric Zn cells with PCMS gel electrolyte can be cycled for more than 2000 h at a high current density of 40 mA cm−2. Furthermore, the Zn//I2 cell using PCMS gel electrolyte also sustained cycling for over 8000 cycles, and the pouch cell with PCMS gel electrolyte exhibited practical deformable applications in flexible devices. This work highlights an effective gel electrolyte approach for enhancing interfacial stability, potentially advancing the development of highly reversible AZBs.","PeriodicalId":111,"journal":{"name":"Advanced Energy Materials","volume":"9 1","pages":""},"PeriodicalIF":27.8,"publicationDate":"2024-12-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142783246","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

Triple Regulation of Water Molecules Behavior to Realize High Stability and Broad Temperature Tolerance in Aqueous Zinc Metal Batteries via a Novel Cost-Effective Eutectic Electrolyte

IF 27.8 1区材料科学

Advanced Energy Materials Pub Date : 2024-12-06 DOI: 10.1002/aenm.202403689

Wensong Lv, Yi Tan, Chengyue Guo, Xin He, Lingxing Zeng, Jinliang Zhu, Le Yang, Zhengjun Chen, Xucai Yin, Jing Xu, Huibing He

{"title":"Triple Regulation of Water Molecules Behavior to Realize High Stability and Broad Temperature Tolerance in Aqueous Zinc Metal Batteries via a Novel Cost-Effective Eutectic Electrolyte","authors":"Wensong Lv, Yi Tan, Chengyue Guo, Xin He, Lingxing Zeng, Jinliang Zhu, Le Yang, Zhengjun Chen, Xucai Yin, Jing Xu, Huibing He","doi":"10.1002/aenm.202403689","DOIUrl":"https://doi.org/10.1002/aenm.202403689","url":null,"abstract":"The high activity of water in aqueous electrolyte causes drastic side reactions on the Zn anodes, severely limiting the electrochemical performance of aqueous zinc metal batteries (AZMBs) under extreme conditions. Herein, levulinic acid is developed as the hydrated deep eutectic solvent (DES), to build a novel non-flammable and cost-effective ZnSO4-based eutectic electrolyte with triple regulation of water molecules behavior, enabling highly stable AZMBs over a wide temperature. In situ experiments, molecular dynamics simulations, and spectroscopy analysis jointly reveal that the DES is capable of comprehensively lowering the water activity by simultaneously controlling the behavior of the free, solvated, and interfacial water molecules within the eutectic electrolyte system. Consequently, the Zn anodes exhibit ultralong cycling stability (4500 h at 1 mA cm−2/1 mA h cm−2), decent Coulombic efficiency of 99.39%, and excellent temperature tolerance (−20–50 °C). Notably, the designed 2.0 Ah Zn//VOX pouch cell exhibits a recorded actual energy density of 37.46 Wh Kg−1 and 95.38 Wh L−1 at the whole cell level, with a remarkable capacity retention of 81.01% after 150 cycles, demonstrating the potential for scale-up into real AZMBs. This work provides an in-depth understanding of the correlation between the water molecule behavior and electrochemical properties of AZMBs.","PeriodicalId":111,"journal":{"name":"Advanced Energy Materials","volume":"68 1","pages":""},"PeriodicalIF":27.8,"publicationDate":"2024-12-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142783247","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

Reducing Lithium-Diffusion Barrier on the Wadsley–Roth Crystallographic Shear Plane via Low-Valent Cation Doping for Ultrahigh Power Lithium-Ion Batteries

IF 27.8 1区材料科学

Advanced Energy Materials Pub Date : 2024-12-06 DOI: 10.1002/aenm.202403623

Jun Ma, Yu Xiang, Jingyue Xu, Wenfeng Zhang, Huimin Zhang, Jingyi Qiu, Xiayu Zhu, Hao Zhang, Haiping Lin, Gaoping Cao

{"title":"Reducing Lithium-Diffusion Barrier on the Wadsley–Roth Crystallographic Shear Plane via Low-Valent Cation Doping for Ultrahigh Power Lithium-Ion Batteries","authors":"Jun Ma, Yu Xiang, Jingyue Xu, Wenfeng Zhang, Huimin Zhang, Jingyi Qiu, Xiayu Zhu, Hao Zhang, Haiping Lin, Gaoping Cao","doi":"10.1002/aenm.202403623","DOIUrl":"https://doi.org/10.1002/aenm.202403623","url":null,"abstract":"Rapid-charging niobium–tungsten oxide Nb14W3O44 (NbWO) anodes with a Wadsley–Roth crystallographic shear (WRCS) structure possess 3D interconnected open tunnels. However, the anisotropic Li+ diffusion paths lead to a high lithium-diffusion barrier of hooping between window sites across edge-shared octahedrons, as the rate-limiting step of hooping. To improve the rate capability of NbWO, doping it with low-valent cations (with valences lower than W6+) to reduce the high lithium-diffusion barrier is proposed. Electron energy loss spectroscopy reveals that low-valent V5+, V4+, Tb4+, and Ce4+ tend to distribute on the crystallographic shear plane under electrostatic repulsion forces. The reduction in steric hindrance resulting from the increased long bond length ratio of doped edge-shared octahedrons, coupled with coordination environment modification of [LiO5] on the crystallographic shear plane due to the low energy level of V5+, enhances Li+ diffusion kinetics and cyclic stability. V5+- and Tb4+-doped NbWOs achieve rate capacities of 83 and 63 mAh g−1, at 200 C (1C = 0.178 Ag−1) and retain 75.42% and 86.79% of their capacities, respectively, after 3700 cycles at 20 C. Thus, the proposed doping strategy is promising for preparing WRCS-type niobium-based oxides for ultrafast lithium storage.","PeriodicalId":111,"journal":{"name":"Advanced Energy Materials","volume":"22 1","pages":""},"PeriodicalIF":27.8,"publicationDate":"2024-12-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142783243","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

Fluorine Passivated Perovskite SrNbO2N Photocatalyst for Robust Sunlight-Driven Water Splitting

IF 27.8 1区材料科学

Advanced Energy Materials Pub Date : 2024-12-05 DOI: 10.1002/aenm.202404811

Jinxing Yu, Jie Huang, Ran Wang, Elena Yu Konysheva, Gang Liu, Xiaoxiang Xu

{"title":"Fluorine Passivated Perovskite SrNbO2N Photocatalyst for Robust Sunlight-Driven Water Splitting","authors":"Jinxing Yu, Jie Huang, Ran Wang, Elena Yu Konysheva, Gang Liu, Xiaoxiang Xu","doi":"10.1002/aenm.202404811","DOIUrl":"https://doi.org/10.1002/aenm.202404811","url":null,"abstract":"SrNbO2N is a promising narrow-bandgap semiconductor for sunlight-driven water splitting but is generally subject to insufficient photocarrier separation and severe photocorrosion. Here, the targeted single-crystalline SrNbO2N nanobelts are passivated by consecutive annealing in O2 and N2/NH4F to approach the right N/O ratio (1/2) and anion content (O + N = 60 at%). The passivation measures lead to both a low concentration (≈2.2 × 1015 cm−3) of defects including VO, Nb3+, Nb4+ for efficient photocarrier separation and unique fluorine-rich, nitrogen-poor surface with low surface energy for high stability against photocorrosion. Notably, the passivated SrNbO2N nanobelts deliver the highest values of photocurrent density of 4.5 mA cm−2 at 1.23 V versus RHE and stable photocatalytic (PC) Z-scheme overall water splitting activity of ≈10 µmol h−1 H2 evolution under AM 1.5G illumination when used as photoanode materials for photoelectrochemical (PEC) water oxidation and the photocatalytic O2-evolution moiety, respectively. These findings provide not only an effective guideline to upgrade the activity and stability of SrNbO2N but also fresh mechanistic insights into the role of passivation measures.","PeriodicalId":111,"journal":{"name":"Advanced Energy Materials","volume":"82 1","pages":""},"PeriodicalIF":27.8,"publicationDate":"2024-12-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142777413","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

Comprehensive Review on Slot-Die-Based Perovskite Photovoltaics: Mechanisms, Materials, Methods, and Marketability

IF 27.8 1区材料科学

Advanced Energy Materials Pub Date : 2024-12-05 DOI: 10.1002/aenm.202403088

Ko Ko Shin Thant, Chaowaphat Seriwattanachai, Thantham Jittham, Naruedej Thamangraksat, Patawee Sakata, Pongsakorn Kanjanaboos

引用次数: 0

Structural Unpredictability of a Cobalt-Free Layered Cathode and Its Mitigation for Producing Reliable, Sustainable Batteries

IF 27.8 1区材料科学

Advanced Energy Materials Pub Date : 2024-12-05 DOI: 10.1002/aenm.202404593

Geon-Tae Park, Myoung-Chan Kim, Min-Su Kim, Tae-Chong Noh, Ji-Hyun Ryu, Nam-Yung Park, Yang-Kook Sun

{"title":"Structural Unpredictability of a Cobalt-Free Layered Cathode and Its Mitigation for Producing Reliable, Sustainable Batteries","authors":"Geon-Tae Park, Myoung-Chan Kim, Min-Su Kim, Tae-Chong Noh, Ji-Hyun Ryu, Nam-Yung Park, Yang-Kook Sun","doi":"10.1002/aenm.202404593","DOIUrl":"https://doi.org/10.1002/aenm.202404593","url":null,"abstract":"To advance the sustainable development of Li-ion batteries, reducing the Co content in Li[NixCoy(Mn or Al)(1–x–y)]O2 has become essential, prompting the exploration of Co-free Li[NixMn(1–x)]O2 alternatives. Among the promising solutions are Co-free layered cathodes with compositional concentration gradients, which offer significant potential. However, their unique microstructure and compositional partitioning, key to their performance, are highly sensitive to synthesis temperatures. Over-sintering can lead to the structural unpredictability of Co-free cathode materials and detrimental effects on electrochemical properties. In this study, a highly stable Co-free layered oxide cathode is developed by doping a concentration gradient Li[Ni0.9Mn0.1]O2, with high-valence ions. This innovative strategy significantly reduces sensitivity to calcination temperatures, minimizing nano- and microstructural changes across a broad temperature range (750–810 °C). The particle-level compositional gradation and grain-level heteroelement encapsulation contribute to the cathode material's exceptional electrochemical performance. Mo doping, in trace amounts, plays a pivotal role in maintaining the stability of Co-free cathodes, enabling the development of high-potential (4.3 V vs graphite) Co-free cathodes suitable for practical and sustainable Li-ion battery applications.","PeriodicalId":111,"journal":{"name":"Advanced Energy Materials","volume":"4 1","pages":""},"PeriodicalIF":27.8,"publicationDate":"2024-12-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142777411","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