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MOF-derived 1D/3D N-doped porous carbon for spatially confined electrochemical CO2 reduction to adjustable syngas MOF 衍生的一维/三维掺杂 N 的多孔碳,用于空间受限电化学二氧化碳还原成可调合成气
IF 19.5 1区 材料科学
Carbon Energy Pub Date : 2024-03-19 DOI: 10.1002/cey2.461
Wei Zhang, Hui Li, Daming Feng, Chenglin Wu, Chenghua Sun, Baohua Jia, Xue Liu, Tianyi Ma
{"title":"MOF-derived 1D/3D N-doped porous carbon for spatially confined electrochemical CO2 reduction to adjustable syngas","authors":"Wei Zhang,&nbsp;Hui Li,&nbsp;Daming Feng,&nbsp;Chenglin Wu,&nbsp;Chenghua Sun,&nbsp;Baohua Jia,&nbsp;Xue Liu,&nbsp;Tianyi Ma","doi":"10.1002/cey2.461","DOIUrl":"10.1002/cey2.461","url":null,"abstract":"<p>Electrochemical reduction of CO<sub>2</sub> to syngas (CO and H<sub>2</sub>) offers an efficient way to mitigate carbon emissions and store intermittent renewable energy in chemicals. Herein, the hierarchical one-dimensional/three-dimensional nitrogen-doped porous carbon (1D/3D NPC) is prepared by carbonizing the composite of Zn-MOF-74 crystals in situ grown on a commercial melamine sponge (MS), for electrochemical CO<sub>2</sub> reduction reaction (CO<sub>2</sub>RR). The 1D/3D NPC exhibits a high CO/H<sub>2</sub> ratio (5.06) and CO yield (31 mmol g<sup>−1</sup> h<sup>−1</sup>) at −0.55 V, which are 13.7 times and 21.4 times those of 1D porous carbon (derived from Zn-MOF-74) and N-doped carbon (carbonized by MS), respectively. This is attributed to the unique spatial environment of 1D/3D NPC, which increases the adsorption capacity of CO<sub>2</sub> and promotes electron transfer from the 3D N-doped carbon framework to 1D carbon, improving the reaction kinetics of CO<sub>2</sub>RR. Experimental results and charge density difference plots indicate that the active site of CO<sub>2</sub>RR is the positively charged carbon atom adjacent to graphitic N on 1D carbon and the active site of HER is the pyridinic N on 1D carbon. The presence of pyridinic N and pyrrolic N reduces the number of electron transfer, decreasing the reaction kinetics and the activity of CO<sub>2</sub>RR. The CO/H<sub>2</sub> ratio is related to the distribution of N species and the specific surface area, which are determined by the degree of spatial confinement effect. The CO/H<sub>2</sub> ratios can be regulated by adjusting the carbonization temperature to adjust the degree of spatial confinement effect. Given the low cost of feedstock and easy strategy, 1D/3D NPC catalysts have great potential for industrial application.</p>","PeriodicalId":33706,"journal":{"name":"Carbon Energy","volume":"6 8","pages":""},"PeriodicalIF":19.5,"publicationDate":"2024-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/cey2.461","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140170520","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
Local coordination and electronic interactions of Pd/MXene via dual-atom codoping with superior durability for efficient electrocatalytic ethanol oxidation 通过双原子偶联掺杂实现钯/二甲苯的局部配位和电子相互作用,为乙醇的高效电催化氧化提供卓越的耐久性能
IF 19.5 1区 材料科学
Carbon Energy Pub Date : 2024-03-15 DOI: 10.1002/cey2.443
Zhangxin Chen, Fan Jing, Minghui Luo, Xiaohui Wu, Haichang Fu, Shengwei Xiao, Binbin Yu, Dan Chen, Xianqiang Xiong, Yanxian Jin
{"title":"Local coordination and electronic interactions of Pd/MXene via dual-atom codoping with superior durability for efficient electrocatalytic ethanol oxidation","authors":"Zhangxin Chen,&nbsp;Fan Jing,&nbsp;Minghui Luo,&nbsp;Xiaohui Wu,&nbsp;Haichang Fu,&nbsp;Shengwei Xiao,&nbsp;Binbin Yu,&nbsp;Dan Chen,&nbsp;Xianqiang Xiong,&nbsp;Yanxian Jin","doi":"10.1002/cey2.443","DOIUrl":"10.1002/cey2.443","url":null,"abstract":"<p>Catalyst design relies heavily on electronic metal-support interactions, but the metal-support interface with an uncontrollable electronic or coordination environment makes it challenging. Herein, we outline a promising approach for the rational design of catalysts involving heteroatoms as anchors for Pd nanoparticles for ethanol oxidation reaction (EOR) catalysis. The doped B and N atoms from dimethylamine borane (DB) occupy the position of the Ti<sub>3</sub>C<sub>2</sub> lattice to anchor the supported Pd nanoparticles. The electrons transfer from the support to B atoms, and then to the metal Pd to form a stable electronic center. A strong electronic interaction can be produced and the d-band center can be shifted down, driving Pd into the dominant metallic state and making Pd nanoparticles deposit uniformly on the support. As-obtained Pd/DB–Ti<sub>3</sub>C<sub>2</sub> exhibits superior durability to its counterpart (∼14.6% retention) with 91.1% retention after 2000 cycles, placing it among the top single metal anodic catalysts. Further, in situ Raman and density functional theory computations confirm that Pd/DB–Ti<sub>3</sub>C<sub>2</sub> is capable of dehydrogenating ethanol at low reaction energies.</p>","PeriodicalId":33706,"journal":{"name":"Carbon Energy","volume":"6 8","pages":""},"PeriodicalIF":19.5,"publicationDate":"2024-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/cey2.443","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140153913","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
Reshaping Li–Mg hybrid batteries: Epitaxial electrodeposition and spatial confinement on MgMOF substrates via the lattice-matching strategy 重塑锂镁混合电池:通过晶格匹配策略在 MgMOF 衬底上进行外延电沉积和空间限制
IF 19.5 1区 材料科学
Carbon Energy Pub Date : 2024-03-15 DOI: 10.1002/cey2.520
Yongqin Wang, Fulin Cheng, Jiawen Ji, Chenyang Cai, Yu Fu
{"title":"Reshaping Li–Mg hybrid batteries: Epitaxial electrodeposition and spatial confinement on MgMOF substrates via the lattice-matching strategy","authors":"Yongqin Wang,&nbsp;Fulin Cheng,&nbsp;Jiawen Ji,&nbsp;Chenyang Cai,&nbsp;Yu Fu","doi":"10.1002/cey2.520","DOIUrl":"10.1002/cey2.520","url":null,"abstract":"<p>The emergence of Li–Mg hybrid batteries has been receiving attention, owing to their enhanced electrochemical kinetics and reduced overpotential. Nevertheless, the persistent challenge of uneven Mg electrodeposition remains a significant impediment to their practical integration. Herein, we developed an ingenious approach that centered around epitaxial electrocrystallization and meticulously controlled growth of magnesium crystals on a specialized MgMOF substrate. The chosen MgMOF substrate demonstrated a robust affinity for magnesium and showed minimal lattice misfit with Mg, establishing the crucial prerequisites for successful heteroepitaxial electrocrystallization. Moreover, the incorporation of periodic electric fields and successive nanochannels within the MgMOF structure created a spatially confined environment that considerably promoted uniform magnesium nucleation at the molecular scale. Taking inspiration from the “blockchain” concept prevalent in the realm of big data, we seamlessly integrated a conductive polypyrrole framework, acting as a connecting “chain,” to interlink the “blocks” comprising the MgMOF cavities. This innovative design significantly amplified charge-transfer efficiency, thereby increasing overall electrochemical kinetics. The resulting architecture (MgMOF@PPy@CC) served as an exceptional host for heteroepitaxial Mg electrodeposition, showcasing remarkable electrostripping/plating kinetics and excellent cycling performance. Surprisingly, a symmetrical cell incorporating the MgMOF@PPy@CC electrode demonstrated impressive stability even under ultrahigh current density conditions (10 mA cm<sup>–2</sup>), maintaining operation for an extended 1200 h, surpassing previously reported benchmarks. Significantly, on coupling the MgMOF@PPy@CC anode with a Mo<sub>6</sub>S<sub>8</sub> cathode, the assembled battery showed an extended lifespan of 10,000 cycles at 70 C, with an outstanding capacity retention of 96.23%. This study provides a fresh perspective on the rational design of epitaxial electrocrystallization driven by metal–organic framework (MOF) substrates, paving the way toward the advancement of cutting-edge batteries.</p>","PeriodicalId":33706,"journal":{"name":"Carbon Energy","volume":"6 8","pages":""},"PeriodicalIF":19.5,"publicationDate":"2024-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/cey2.520","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140153696","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
Yttrium- and nitrogen-doped NiCo phosphide nanosheets for high-efficiency water electrolysis 用于高效电解水的掺钇和掺氮磷化镍钴纳米片
IF 19.5 1区 材料科学
Carbon Energy Pub Date : 2024-03-15 DOI: 10.1002/cey2.522
Guangliang Chen, Huiyang Xiang, Yingchun Guo, Jun Huang, Wei Chen, Zhuoyi Chen, Tongtong Li, Kostya (Ken) Ostrikov
{"title":"Yttrium- and nitrogen-doped NiCo phosphide nanosheets for high-efficiency water electrolysis","authors":"Guangliang Chen,&nbsp;Huiyang Xiang,&nbsp;Yingchun Guo,&nbsp;Jun Huang,&nbsp;Wei Chen,&nbsp;Zhuoyi Chen,&nbsp;Tongtong Li,&nbsp;Kostya (Ken) Ostrikov","doi":"10.1002/cey2.522","DOIUrl":"10.1002/cey2.522","url":null,"abstract":"<p>Engineering high-performance and low-cost bifunctional catalysts for H<sub>2</sub> (hydrogen evolution reaction [HER]) and O<sub>2</sub> (oxygen evolution reaction [OER]) evolution under industrial electrocatalytic conditions remains challenging. Here, for the first time, we use the stronger electronegativity of a rare-Earth yttrium ion (Y<sup>3+</sup>) to induce in situ NiCo-layered double-hydroxide nanosheets from NiCo foam (NCF) treated by a dielectric barrier discharge plasma NCF (PNCF), and then obtain nitrogen-doped YNiCo phosphide (N-YNiCoP/PNCF) after the phosphating process using radiofrequency plasma in nitrogen. The obtained N-YNiCoP/PNCF has a large specific surface area, rich heterointerfaces, and an optimized electronic structure, inducing high electrocatalytic activity in HER (331 mV vs. 2000 mA cm<sup>−2</sup>) and OER (464 mV vs. 2000 mA cm<sup>−2</sup>) reactions in 1 M KOH electrolyte. X-ray absorption spectroscopy and density functional theory quantum chemistry calculations reveal that the coordination number of CoNi decreased with the incorporation of Y atoms, which induce much shorter bonds of Ni and Co ions and promote long-term stability of N-YNiCoP in HER and OER under the simulated industrial conditions. Meanwhile, the CoN-YP<sub>5</sub> heterointerface formed by plasma N-doping is the active center for overall water splitting. This work expands the applications of rare-Earth elements in engineering bifunctional electrocatalysts and provides a new avenue for designing high-performance transition-metal-based catalysts in the renewable energy field.</p>","PeriodicalId":33706,"journal":{"name":"Carbon Energy","volume":"6 8","pages":""},"PeriodicalIF":19.5,"publicationDate":"2024-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/cey2.522","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140153616","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
Manipulating photogenerated electron flow in nickel single-atom catalysts for photocatalytic CO2 reduction into tunable syngas 操纵镍单原子催化剂中的光生电子流,将二氧化碳光催化还原为可调合成气
IF 19.5 1区 材料科学
Carbon Energy Pub Date : 2024-03-13 DOI: 10.1002/cey2.533
Yida Zhang, Qingyu Wang, Lihui Wu, Haibin Pan, Chengyuan Liu, Yue Lin, Gongming Wang, Xusheng Zheng
{"title":"Manipulating photogenerated electron flow in nickel single-atom catalysts for photocatalytic CO2 reduction into tunable syngas","authors":"Yida Zhang,&nbsp;Qingyu Wang,&nbsp;Lihui Wu,&nbsp;Haibin Pan,&nbsp;Chengyuan Liu,&nbsp;Yue Lin,&nbsp;Gongming Wang,&nbsp;Xusheng Zheng","doi":"10.1002/cey2.533","DOIUrl":"10.1002/cey2.533","url":null,"abstract":"<p>The key to designing photocatalysts is to orient the migration of photogenerated electrons to the target active sites rather than dissipate at inert sites. Herein, we demonstrate that the doping of phosphorus (P) significantly enriches photogenerated electrons at Ni active sites and enhances the performance for CO<sub>2</sub> reduction into syngas. During photocatalytic CO<sub>2</sub> reduction, Ni single-atom-anchored P-modulated carbon nitride showed an impressive syngas yield rate of 85 μmol g<sub>cat</sub><sup>−1</sup> h<sup>−1</sup> and continuously adjustable CO/H<sub>2</sub> ratios ranging from 5:1 to 1:2, which exceeded those of most of the reported carbon nitride-based single-atom catalysts. Mechanistic studies reveal that P doping improves the conductivity of catalysts, which promotes photogenerated electron transfer to the Ni active sites rather than dissipate randomly at low-activity nonmetallic sites, facilitating the CO<sub>2</sub>-to-syngas photoreduction process.</p>","PeriodicalId":33706,"journal":{"name":"Carbon Energy","volume":"6 8","pages":""},"PeriodicalIF":19.5,"publicationDate":"2024-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/cey2.533","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140126344","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
Fine-tuning electronic structure of N-doped graphitic carbon-supported Co- and Fe-incorporated Mo2C to achieve ultrahigh electrochemical water oxidation activity 微调掺杂 N 的石墨碳支撑 Co- 和 Fe- 掺杂 Mo2C 的电子结构以实现超高的电化学水氧化活性
IF 19.5 1区 材料科学
Carbon Energy Pub Date : 2024-03-13 DOI: 10.1002/cey2.488
Md. Selim Arif Sher Shah, Hyeonjung Jung, Vinod K. Paidi, Kug-Seung Lee, Jeong Woo Han, Jong Hyeok Park
{"title":"Fine-tuning electronic structure of N-doped graphitic carbon-supported Co- and Fe-incorporated Mo2C to achieve ultrahigh electrochemical water oxidation activity","authors":"Md. Selim Arif Sher Shah,&nbsp;Hyeonjung Jung,&nbsp;Vinod K. Paidi,&nbsp;Kug-Seung Lee,&nbsp;Jeong Woo Han,&nbsp;Jong Hyeok Park","doi":"10.1002/cey2.488","DOIUrl":"10.1002/cey2.488","url":null,"abstract":"<p>Mo<sub>2</sub>C is an excellent electrocatalyst for hydrogen evolution reaction (HER). However, Mo<sub>2</sub>C is a poor electrocatalyst for oxygen evolution reaction (OER). Herein, two different elements, namely Co and Fe, are incorporated in Mo<sub>2</sub>C that, therefore, has a finely tuned electronic structure, which is not achievable by incorporation of any one of the metals. Consequently, the resulting electrocatalyst Co<sub>0.8</sub>Fe<sub>0.2</sub>–Mo<sub>2</sub>C-80 displayed excellent OER catalytic performance, which is evidenced by a low overpotential of 214.0 (and 246.5) mV to attain a current density of 10 (and 50) mA cm<sup>−2</sup>, an ultralow Tafel slope of 38.4 mV dec<sup>−1</sup>, and long-term stability in alkaline medium. Theoretical data demonstrates that Co<sub>0.8</sub>Fe<sub>0.2</sub>–Mo<sub>2</sub>C-80 requires the lowest overpotential (1.00 V) for OER and Co centers to be the active sites. The ultrahigh catalytic performance of the electrocatalyst is attributed to the excellent intrinsic catalytic activity due to high Brunauer–Emmett–Teller specific surface area, large electrochemically active surface area, small Tafel slope, and low charge-transfer resistance.</p>","PeriodicalId":33706,"journal":{"name":"Carbon Energy","volume":"6 7","pages":""},"PeriodicalIF":19.5,"publicationDate":"2024-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/cey2.488","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140126421","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
The effect of salt anion in ether-based electrolyte for electrochemical performance of sodium-ion batteries: A case study of hard carbon 醚基电解质中盐阴离子对钠离子电池电化学性能的影响:硬碳案例研究
IF 19.5 1区 材料科学
Carbon Energy Pub Date : 2024-03-13 DOI: 10.1002/cey2.518
Jiabao Li, Jingjing Hao, Quan Yuan, Ruoxing Wang, Frederick Marlton, Tianyi Wang, Chengyin Wang, Xin Guo, Guoxiu Wang
{"title":"The effect of salt anion in ether-based electrolyte for electrochemical performance of sodium-ion batteries: A case study of hard carbon","authors":"Jiabao Li,&nbsp;Jingjing Hao,&nbsp;Quan Yuan,&nbsp;Ruoxing Wang,&nbsp;Frederick Marlton,&nbsp;Tianyi Wang,&nbsp;Chengyin Wang,&nbsp;Xin Guo,&nbsp;Guoxiu Wang","doi":"10.1002/cey2.518","DOIUrl":"10.1002/cey2.518","url":null,"abstract":"<p>Compared with the extensively used ester-based electrolyte, the hard carbon (HC) electrode is more compatible with the ether-based counterpart in sodium-ion batteries, which can lead to improved cycling stability and robust rate capability. However, the impact of salt anion on the electrochemical performance of HC electrodes has yet to be fully understood. In this study, the anionic chemistry in regulating the stability of electrolytes and the performance of sodium-ion batteries have been systematically investigated. This work shows discrepancies in the reductive stability of the anionic group, redox kinetics, and component/structure of solid electrolyte interface (SEI) with different salts (NaBF<sub>4,</sub> NaPF<sub>6</sub>, and NaSO<sub>3</sub>CF<sub>3</sub>) in the typical ether solvent (diglyme). Particularly, the density functional theory calculation manifests the preferred decomposition of PF<sub>6</sub><sup>−</sup> due to the reduced reductive stability of anions in the solvation structure, thus leading to the formation of NaF-rich SEI. Further investigation on redox kinetics reveals that the NaPF<sub>6</sub>/diglyme can induce the fast ionic diffusion dynamic and low charge transfer barrier for HC electrode, thus resulting in superior sodium storage performance in terms of rate capability and cycling life, which outperforms those of NaBF<sub>4</sub>/diglyme and NaSO<sub>3</sub>CF<sub>3</sub>/diglyme. Importantly, this work offers valuable insights for optimizing the electrochemical behaviors of electrode materials by regulating the anionic group in the electrolyte.</p>","PeriodicalId":33706,"journal":{"name":"Carbon Energy","volume":"6 8","pages":""},"PeriodicalIF":19.5,"publicationDate":"2024-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/cey2.518","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140126419","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
Permeability and selectivity synergistically enhanced nanofluidic membrane for osmotic energy harvesting 渗透性和选择性协同增强的纳米流体膜用于渗透能量收集
IF 19.5 1区 材料科学
Carbon Energy Pub Date : 2024-03-13 DOI: 10.1002/cey2.458
Jundong Zhong, Tingting Xu, Hongyan Qi, Weibo Sun, Shuang Zhao, Zhe Zhao, Yirong Sun, Youliang Zhu, Jianxin Mu, Haibo Zhang, Xuanbo Zhu, Zhenhua Jiang, Lei Jiang
{"title":"Permeability and selectivity synergistically enhanced nanofluidic membrane for osmotic energy harvesting","authors":"Jundong Zhong,&nbsp;Tingting Xu,&nbsp;Hongyan Qi,&nbsp;Weibo Sun,&nbsp;Shuang Zhao,&nbsp;Zhe Zhao,&nbsp;Yirong Sun,&nbsp;Youliang Zhu,&nbsp;Jianxin Mu,&nbsp;Haibo Zhang,&nbsp;Xuanbo Zhu,&nbsp;Zhenhua Jiang,&nbsp;Lei Jiang","doi":"10.1002/cey2.458","DOIUrl":"10.1002/cey2.458","url":null,"abstract":"<p>For the porous-membrane-based osmotic energy generator, the potential synergistic enhancement mechanism of various key parameters is still controversial, especially because optimizing the trade-off between permeability and selectivity is still a challenge. Here, to construct a permeability and selectivity synergistically enhanced osmotic energy generator, the two-dimensional porous membranes with tunable charge density are prepared by inserting sulfonated polyether sulfone into graphene oxide. Influences of charge density and pore size on the ion transport are explored, and the ionic behaviors in the channel are calculated by numerical simulations. The mechanism of ion transport in the process is studied in depth, and the fundamental principles of energy conversion are revealed. The results demonstrate that charge density and pore size should be matched to construct the optimal ion channel. This collaborative enhancement strategy of permeability and selectivity has significantly improved the output power in osmotic energy generation; compared to the pure graphene oxide membrane, the composite membrane presents almost 20 times improvement.</p>","PeriodicalId":33706,"journal":{"name":"Carbon Energy","volume":"6 8","pages":""},"PeriodicalIF":19.5,"publicationDate":"2024-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/cey2.458","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140126435","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
Heterostructural NiFeW disulfide and hydroxide dual-trimetallic core-shell nanosheets for synergistically effective water oxidation 用于协同有效水氧化的二硫化镍铁合金和氢氧化物双三金属核壳异构纳米片
IF 19.5 1区 材料科学
Carbon Energy Pub Date : 2024-03-13 DOI: 10.1002/cey2.532
Peng-Fei Guo, Yang Yang, Bing Zhu, Qian-Nan Yang, Yan Jia, Wei-Tao Wang, Zhao-Tie Liu, Shi-Qiang Zhao, Xun Cui
{"title":"Heterostructural NiFeW disulfide and hydroxide dual-trimetallic core-shell nanosheets for synergistically effective water oxidation","authors":"Peng-Fei Guo,&nbsp;Yang Yang,&nbsp;Bing Zhu,&nbsp;Qian-Nan Yang,&nbsp;Yan Jia,&nbsp;Wei-Tao Wang,&nbsp;Zhao-Tie Liu,&nbsp;Shi-Qiang Zhao,&nbsp;Xun Cui","doi":"10.1002/cey2.532","DOIUrl":"10.1002/cey2.532","url":null,"abstract":"<p>A stable and highly active core-shell heterostructure electrocatalyst is essential for catalyzing oxygen evolution reaction (OER). Here, a dual-trimetallic core-shell heterostructure OER electrocatalyst that consists of a NiFeWS<sub>2</sub> inner core and an amorphous NiFeW(OH)<sub><i>z</i></sub> outer shell is designed and synthesized using in situ electrochemical tuning. The electrochemical measurements of different as-synthesized catalysts with a similar mass loading suggest that the core-shell Ni<sub>0.66</sub>Fe<sub>0.17</sub>W<sub>0.17</sub>S<sub>2</sub>@amorphous NiFeW(OH)<sub><i>z</i></sub> nanosheets exhibit the highest overall performance compared with that of other bimetallic reference catalysts for the OER. Additionally, the nanosheet arrays were in situ grown on hydrophilic-treated carbon paper to fabricate an integrated three-dimensional electrode that affords a current density of 10 mA cm<sup>−2</sup> at a small overpotential of 182 mV and a low Tafel slope of 35 mV decade<sup>−1</sup> in basic media. The Faradaic efficiency of core-shell Ni<sub>0.66</sub>Fe<sub>0.17</sub>W<sub>0.17</sub>S<sub>2</sub>@amorphous NiFeW(OH)<sub><i>z</i></sub> is as high as 99.5% for OER. The scanning electron microscope, transmission electron microscope, and X-ray photoelectron spectroscopy analyses confirm that this electrode has excellent stability in morphology and elementary composition after long-term electrochemical measurements. Importantly, density functional theory calculations further indicate that the core-shell heterojunction increased the conductivity of the catalyst, optimized the adsorption energy of the OER intermediates, and improved the OER activity. This study provides a universal strategy for designing more active core-shell structure electrocatalysts based on the rule of coordinated regulation between electronic transport and active sites.</p>","PeriodicalId":33706,"journal":{"name":"Carbon Energy","volume":"6 8","pages":""},"PeriodicalIF":19.5,"publicationDate":"2024-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/cey2.532","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140126341","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
Building stabilized Cu0.17Mn0.03V2O5−□·2.16H2O cathode enables an outstanding room-/low-temperature aqueous Zn-ion batteries 构建稳定的 Cu0.17Mn0.03V2O5-□-2.16H2O 阴极,实现出色的室温/低温水性 Zn 离子电池
IF 19.5 1区 材料科学
Carbon Energy Pub Date : 2024-03-13 DOI: 10.1002/cey2.512
Ao Wang, Dai-Huo Liu, Lin Yang, Fang Xu, Dan Luo, Haozhen Dou, Mengqin Song, Chunyan Xu, Beinuo Zhang, Jialin Zheng, Zhongwei Chen, Zhengyu Bai
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