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| 1 | Single-atom catalysis enables long-life, high-energy lithium-sulfur batteries显示文摘With high energy density and low material cost,lithium sulfur batteries(LSBs)emerge quite expeditiously as a fascinating energy storage system over the past decade.Broad applications of LSBs ranging from electric vehicles to stationary grid storage seem rather bright in recent literatures.However,there still exist many pressing challenges to be addressed because we do not yet fully understand and control the electrode-electrolyte interface chemistries during battery operation,such as polysulide shuttling and poor utilization of active sulfur.Single-atom catalysts(SACs)pave new possibilities of tackling the tough issues due to their decent applicability in the atomic-level identification of structure-activity relationships and reaction mechanism,as well as their structural tunability with atomic precision.This review comprehensively summarizes the very recent advances in utilization of highly active SACs for LSBs by stating and discussing the related publications,which involves catalyst synthesis routes,battery pertormance,catalytic mechanisms,optimization strategies,and promises to achieve long-lite,high-energy LSBs.We see that endeavors to employ SACs to modify sulfur cathode have allowed efficient polysulfide conversion and confinement,leading to the minimization of shuttle effect.Parallel efforts are being devoted to extending the scope of SACs to cell separator and lithium metal anode in order to unlock the full potential of LSBs.We also obtain mechanistic insights into battery chemistries and nature of SACs in their strong interactions with polysulfides through advanced in situ characterizations documented.Overall,acceleration in the development of LSBs by introducing SACs is noticeable,and this cutting edge needs more attentions to further promoting the design of better LSBs. | Zechao Zhuang Qi Kang Dingsheng Wang Yadong Li | 2020 | Nano Research2020，13，7： | 46 |
| 2 | Defects enriched hollow porous Co-N-doped carbons embedded with ultrafine CoFe/Co nanoparticles as bifunctional oxygen electrocatalyst for rechargeable flexible solid zinc-air batteries显示文摘The construction and design of highly efficient and inexpensive bifunctional oxygen electrocatalysts substitute for noble-metal-based catalysts is highly desirable for the development of rechargeable Zn-air battery(ZAB).In this work,a bifunctional oxygen electrocatalysts of based on ultrafine CoFe alloy(4-5 nm)dispersed in defects enriched hollow porous Co-N-doped carbons,made by annealing SiO2 coated zeolitic imidazolate framework-67(ZIF-67)encapsulated Fe ions.The hollow porous structure not only exposed the active sites inside ZIF-67,but also provided efficient charge and mass transfer.The strong synergetic coupling among high-density CoFe alloys and Co-N_(x) sites in Co,N-doped carbon species ensures high oxygen reduction reaction(ORR)and oxygen evolution reaction(OER)activity.First-principles simulations reveal that the synergistic promotion effect between CoFe alloy and Co-N site effectively reduced the formation energy of from O^(*)to OH^(*).The optimized CoFe-Co@PNC exhibits outstanding electrocatalytic stability and activity with the overpotential of only 320 mV for OER at 10 mA·cm^(−2) and the half-wave potential of 0.887 V for ORR,outperforming that of most recent reported bifunctional electrocatalysts.A rechargeable ZAB constructed with CoFe-Co@PNC as the air cathode displays long-term cyclability for over 200 h and high power density(152.8 mW·cm^(−2)).Flexible solid-state ZAB with our CoFe-Co@PNC as the air cathode possesses a high open circuit potential(OCP)up to 1.46 V as well as good bending flexibility.This universal structure design provides an attractive and instructive model for the application of nanomaterials derived from MOF in the field of sustainable flexible energy applications device. | Zhao Lei Yangyang Tan Zeyi Zhang Wei Wu Niancai Cheng Runzhe Chen Shichun Mu Xueliang Sun | 2021 | Nano Research2021，14，3： | 9 |
| 3 | A robust bifunctional catalyst for rechargeable Zn-air batteries:Ultrathin NiFe-LDH nanowalls vertically anchored on soybeanderived Fe-N-C matrix显示文摘ABSTRACT NiFe layered double hydroxide(NiFe-LDH)nanosheets and metal-nitrogen-carbon materials(M-N-C,M=Ni,Fe,Co,etc.)are supreme catalysts in the oxygen evolution reaction(OER)and oxygen reduction reaction(ORR)process,respectively.Nevertheless,the monotonic performance and insufficient stability severely hamper their practical application in rechargeable batteries.Herein,we simultaneously combine ultrathin NiFe-LDH nanowalls with renewable soybean-derived Fe-N-C matrix to obtain a hybrid materials(NiFe-LDH/FeSoy-CNSs-A),which exhibits robust catalytic activities for OER(E_(j=10)=1.53 V vs.RHE)and ORR(E_(1/2)=0.91 V vs.RHE),with a top-notch battery parameters and stability in assembled rechargeable Zn-air batteries.Intensive investigations indicate that the vertically dispersed NiFe-LDH nanosheets,Fe-N-C matrix derived from soybean and the strong synergy between them are responsible for the unprecedented OER and ORR performances.The key role of intrinsic N defects involved in the hybrid materials is firstly specified by ultrasoundassisted extraction of soy protein from soybean.The exquisite design can facilitate the utilization of sustainable biomass-derived catalysts,and the mechanism investigations of N defects and oxygenic groups on the structure-activity relationship can stimulate the progress of other functional hybrid electrocatalysts. | Meng Zhang Jiting Zhang Siyi Ran Lingxi Qiu Wei Sun Ying Yu Jisheng Chen Zhihong Zhu | 2021 | Nano Research2021，14，4： | 3 |
| 4 | 功能介孔碳纳米球的合成与应用研究进展显示文摘在过去的十几年里,人们在介孔碳纳米球的合成方法、组装机理、结构表征、功能化和应用等方面做了大量的研究工作。本文综述了制备介孔碳纳米球的主要方法,包括'硬'模板法、'软'模板法和其他合成方法。另外,也介绍了介孔碳纳米球的主要应用,包括吸附分离、催化、能源储存和生物医学。总结了介孔碳纳米球的功能化方式,如杂原子掺杂、纳米颗粒复合、表面修饰等。其优异的应用性能归结为规整的几何形貌、良好的流动性、优异的物理化学性质、可调节的孔径以及可控的粒径分布等。最后,提出了未来介孔碳纳米球的设计合成和应用面临的机遇与挑战。 | 彭亮 彭华容 李伟 | 2021 | 黑龙江大学自然科学学报2021，38，4： | 3 |
| 5 | 金属单原子催化剂稳定、制备与应用的研究进展显示文摘金属单原子通常具有独特的物理和化学特性,在催化应用中展现出优越的催化剂活性,已成为催化领域的一个研究热点.单原子催化剂是一种由单个金属原子锚定在载体上的催化剂,其最大限度地提高了金属原子的利用效率.单原子催化剂的制备方法主要有湿法化学法、金属-有机配位法、原子层沉积法和高温裂解法.本文基于近几年国内外单原子催化剂的研究,总结了单原子稳定负载的主要条件,单原子最优结合位点的预测和判断方法.同时,围绕单原子催化剂的特性,系统地讨论了单原子催化剂在环境和能源等方面的应用,并进行了展望. | 吴健群 胡锋平 李一鸣 许莉 许高平 江燕 彭小明 | 2022 | 环境化学2022，41，5： | 2 |
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