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| 1 | 镶嵌四氧化三钴纳米颗粒的二维MXene用于高效电催化析氧显示文摘高效电催化析氧催化剂的理性设计与可控合成对发展新型可持续能源转换系统具有重要意义.具有混合价态的四氧化三钴纳米材料具有一定的电催化析氧活性,但性能一般且导电性较差.本文首先制备出超薄二维MXene纳米片,并在此基础上可控构建0D Co3O4/2D MXene纳米复合材料.二维MXene丰富的表面官能团能很好地调控四氧化三钴纳米颗粒的尺寸.纳米复合催化剂在碱性介质中表现出优异的电催化析氧活性.在电流密度达到10 m A cm-2时,优先的复合催化剂所需的过电位仅为300 m V,远低于纯相MXene和Co3O4纳米颗粒,大幅提升的电催化活性归因于纳米复合材料中两组分间的界面强耦合效应和协同作用.该工作纳米复合材料制备方法简单有效,研究思路可以进一步拓展到其他类似二维MXene基纳米复合材料的设计合成及应用中. | 陆依 范德琪 陈祖鹏 肖卫平 曹灿灿 杨小飞 | 2020 | Science Bulletin2020，65，6： | 8 |
| 2 | Recent advances in carbonized non-noble metal–organic frameworks for electrochemical catalyst of oxygen reduction reaction显示文摘The non-noble metal oxygen reduction reaction(ORR) catalysts prepared by carbonization of metal–organic framework(MOF) have attracted more and more attentions in the fields of fuel cells and metal-air batteries due to their unique intrinsic advantages such as high catalytic activity, low price, simple synthesis and good adaptability. Different from the study of traditional high active noble metal catalysts, this review systematically summarizes recent developments on non-noble metal(Fe,Co, Cu, Ni, Mn and Mo) ORR catalysts prepared by various MOFs carbonization in different metal centers. The effects of synthesis strategies and pyrolysis conditions on the catalyst properties are discussed. Meanwhile, the key parameters of catalytic performances(including active sites, dispersed state and specific surface area) are discussed and the prospect is presented. It is expected that this review will provide effective guidance for future studies on carbonized non-noble MOFs for ORR electrochemical catalyst. | Chan Li Dao-Hui Zhao Hua-Li Long Ming Li | 2021 | Rare Metals2021，40，10： | 5 |
| 3 | Heptanuclear brucite disk with cyanide bridges in a cocrystal and tracking its pyrolysis to an efficient oxygen evolution electrode显示文摘The development of efficient oxygen evolution reaction(OER)catalysts is still lacking in exploration of the mechanism of controlled pyrolysis of precursors among new material platforms.Here,a novel Co-based coordination molecular cluster has been first introduced as precursor to obtain metallic cobalt core shelled by N-doped carbon(Co@NC)structure which operates as an oxygen evolution electrode.Specifically,a new cocrystal compound,[Co7II(l3-CN)6(mmimp)6][CoIICl3N(CN)2]á3CH3OH(Co7+1,mmimp=2-methoxy-6-((methylimino)-methyl)phenol),was isolated consisting of Brucite disks of cobalt where the usual bridging l3-OH is replaced by l3-CN produced by the in-situ decomposition of dicyanamide(NC-N-CNà).The cobalt atoms are bonded through the nitrogen atom of the cyanide.Remarkably,time dependent thermogravimetric-mass spectrometry(TG-MS)analysis was utilized to track its pyrolysis process.It allowed us to propose a possible formation process of the Co@NC structure from Co7+1.Interestingly,an extremely superior OER electrode is optimized for Co@NC-600 having the lowest overpotential of257 m V at 10 m A/cm2in 1 mol/L KOH solution.The present study pins down the importance of clusters of transition metals on realizing distinct nanostructures operating as highly efficient OER electrocatalyst. | Jian-Qiang Zhao Dandan Cai Jun Dai Mohamedally Kurmoo Xu Peng Ming-Hua Zeng | 2019 | Science Bulletin2019，64，22： | 4 |
| 4 | Facile self-template fabrication of hierarchical nickel-cobalt phosphide hollow nanoflowers with enhanced hydrogen generation performance显示文摘Developing facile methods to construct hierarchical-structured transition metal phosphides is beneficial for achieving high-efficiency hydrogen evolution catalysts.Herein,a self-template strategy of hydrothermal treatment of solid Ni-Co glycerate nanospheres followed by phosphorization is delivered to synthesize hierarchical Ni Co P hollow nanoflowers with ultrathin nanosheet assembly.The microstructure of Ni Co P can be availably tailored by adjusting the hydrothermal treatment temperature through affecting the hydrolysis process of Ni-Co glycerate nanospheres and the occurred Kirkendall effect.Benefitting from the promoted exposure of active sites and affluent mass diffusion routes,the HER performance of the Ni Co P hollow nanoflowers has been obviously enhanced in contrast with the solid Ni Co P nanospheres.The fabricated Ni Co P hollow nanoflowers yield the current density of 10 m A cmà2at small overpotentials of 95 and 127 m V in 0.5 mol Là1H2SO4and 1.0 mol Là1KOH solution,respectively.Moreover,the two-electrode alkaline cell assembled with the Ni Co P and Ir/C catalysts exhibits sustainable stability for overall water splitting.The work provides a simple but efficient method to regulate the microstructure of transition metal phosphides,which is helpful for achieving high-performance hydrogen evolution catalysts based on solid-state metal alkoxides. | Xupo Liu Shaofeng Deng Peifang Liu Jianing Liang Mingxing Gong Chenglong Lai Yun Lu Tonghui Zhao Deli Wang | 2019 | Science Bulletin2019，64，22： | 2 |
| 5 | 多维度炭材料在高性能锌-空气电池中的先进设计策略显示文摘锌-空气电池(ZABs)具有高安全性、低成本、高比容量和环境友好等特点,已成为能源研究的热点之一。然而,空气正极上缓慢的氧析出/氧还原反应(OER/ORR)和锌负极上不可忽视的锌枝晶生长问题严重阻碍了锌-空气电池的大规模应用。在过去的几年里,具有低成本、良好导电性、高化学稳定性和OER/ORR双功能催化活性的炭材料已被广泛研究。本文首先介绍了锌-空气电池的基本原理及炭材料应用于锌-空气电池中的特点与优势。进一步综述了多维度炭材料(一维、二维、三维)在空气电极、锌负极和隔膜等电池主体中的研究进展,着重讨论多维度炭材料对电池性能的提升机理。最后,提出了当前炭材料应用于锌-空气电池面临的挑战,并对未来的研究重点与发展方向进行了展望。 | 应佳萍 郑冬 孟诗博 尹瑞连 戴晓婧 冯锦秀 毋芳芳 施文慧 曹澥宏 | 2022 | 新型炭材料(中英文)2022，37，4： | 2 |
| 6 | 双金属有机骨架衍生的3D等级孔结构纳米立方碳在微生物燃料电池中的应用显示文摘多级孔结构的非贵金属高性能催化剂在微生物燃料电池(MFC)氧化还原反应(ORR)中的应用,是近年来备受关注的话题.在此,我们报道了一种在双金属MOFs中衍生出的奶酪状三维多级孔结构立方碳材料.该材料通过十六烷基三甲基溴化铵(CTAB)作为结构导向剂来控制形成纳米立方骨架,同时采用二氧化硅微球作模板形成介孔结构,并通过调节双金属MOFs的Co/Zn比例来优化材料的物理化学性质,从而提升催化剂的ORR电化学性能.经过优化的3D Co-N-C在中性0.01 mol L^(-1)磷酸盐缓冲液电解质中具有优异的ORR催化性能(相对于可逆氢电极的半波电势高达0.754 V,扩散极限电流密度为5.576 mA cm^(-2)),可与商用20 wt%Pt/C的催化性能相匹敌.同时,这种催化剂与Pt/C相比具有更长的寿命.将三维多级孔材料(3D CoNC-MFC)作为MFC装置中阴极的催化剂,测试了其功率密度和长期耐用性,结果表明3D CoNC-MFC能到达1257 mW m^(-2)的高功率密度,并且在192 h的常规加料操作下仍然保持较高的电压,性能远高于Pt/C-MFC. | 陈能 孟子寒 王锐 蔡世昌 郭伟斌 唐浩林 | 2021 | Science China Materials2021，64，12： | 1 |
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