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您的检索式：作者名="R.Vasant Kumar"
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| 1 | 钴-钼双金属碳化物修饰隔膜强化锂硫电池中多硫化锂的吸附和催化转化显示文摘本文报道了一种钴-钼双金属碳化物(Co3Mo3C)催化材料用于修饰锂硫电池隔膜,强化多硫化锂的化学吸附和催化转化.所组装的电池表现出优异的电化学性能,即使在8.0 mg cm^-2的硫面积负载量条件下,面积比容量仍高达6.8 mA h cm^-2.理论计算结果表明,相比于单一金属碳化物Mo2C,双金属碳化物Co3Mo3C具有更多的活性位点,更利于化学固定多硫化锂,并催化多硫化锂间相互转化;同时,Ni3Mo3C和Fe3Mo3C亦表现出类似的高催化活性.本研究对高性能锂硫电池关键催化材料的设计具有一定的指导意义. | 张泽 王嘉楠 邵啊虎 熊冬根 刘建伟 劳成琰 郗凯 芦世瑶 江秋 吁霁 李黄龙 杨震宇 R.Vasant Kumar | 2020 | Science China Materials2020，63，12： | 4 |
| 2 | Phase boundary engineering of metal-organic-framework-derived carbonaceous nickel selenides for sodium-ion batteries显示文摘Nano Research volume 13,pages2289–2298(2020)Cite this article 347 Accesses 1 Altmetric Metrics details Abstract Sodium-ion batteries(SIBs)are promising power sources due to the low cost and abundance of battery-grade sodium resources,while practical SIBs suffer from intrinsically sluggish diffusion kinetics and severe volume changes of electrode materials.Metal-organic framework(MOFs)derived carbonaceous metal compound offer promising applications in electrode materials due to their tailorable composition,nanostructure,chemical and physical properties.Here,we fabricated hierarchical MOF-derived carbonaceous nickel selenides with bi-phase composition for enhanced sodium storage capability.As MOF formation time increases,the pyrolyzed and selenized products gradually transform from a single-phase Ni3Se4 into bi-phase NiSex then single-phase NiSe2,with concomitant morphological evolution from solid spheres into hierarchical urchin-like yolk-shell structures.As SIBs anodes,bi-phase NiSex@C/CNT-10h(10 h of hydrothermal synthesis time)exhibits a high specific capacity of 387.1 mAh/g at 0.1 A/g,long cycling stability of 306.3 mAh/g at a moderately high current density of 1 A/g after 2,000 cycles.Computational simulation further proves the lattice mismatch at the phase boundary facilitates more interstitial space for sodium storage.Our understanding of the phase boundary engineering of transformed MOFs and their morphological evolution is conducive to fabricate novel composites/hybrids for applications in batteries,catalysis,sensors,and environmental remediation. | Shiyao Lu Hu Wu Jingwei Hou Limin Liu Jiao Li Chris J.Harris Cheng-Yen Lao Yuzheng Guo Kai Xi Shujiang Ding Guoxin Gao Anthony K.Cheetham R.Vasant Kumar | 2020 | Nano Research2020，13，8： | 4 |
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