稳定性纳米阵列Ni及其耦合NiFe-LDH催化剂的构筑及其全水解性能研究
结题报告
批准号:
21975175
项目类别:
面上项目
资助金额:
66.0 万元
负责人:
郝根彦
依托单位:
学科分类:
氢能源化学
结题年份:
2023
批准年份:
2019
项目状态:
已结题
项目参与者:
郝根彦
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中文摘要
目前最有效的析氢和析氧催化剂为铂基和二氧化铱催化剂,由于它们都是贵金属,成本高、储量少,严重限制了其规模化应用。过渡金属Ni在碱性电解质中具有较优的析氢性能,但长时间析氢过程中催化成分易溶解和团聚,从而造成其催化活性降低。NiFe-LDH作为较有潜力的析氧催化剂,但其较差的导电性和有限的暴露活性位点数仍是限制NiFe-LDH析氧催化性能的重要因素。本项目拟通过制备具有一定机械强度的特殊纳米阵列结构的金属Ni催化剂降低Ni颗粒在析氢过程中的溶解团聚,进而提高Ni的析氢活性和稳定性;通过将NiFe-LDH与Ni金属纳米阵列底基耦合提高其导电性,并且NiFe-LDH在Ni纳米阵列上的垂直生长,促进NiFe-LDH纳米片的剥离,进而暴露更多的活性位点,提高NiFe-LDH析氧催化性能;以稳定性纳米阵列Ni为阴极,同时以纳米阵列Ni耦合的NiFe-LDH为阳极构筑两电极体系全水解催化剂。
英文摘要
Pt-based materials and iridium oxides are state-of-the-art electrocatalysts for HER and OER, respectively. However, their high cost and scarcity largely hinder their scale-up. Transition metal Ni exhibits superior hydrogen evolution performance in an alkaline electrolyte, but its catalytic activity is lowered due to dissolution and agglomeration of the catalytic component during prolonged hydrogen evolution. NiFe-LDH catalysts are regarded as one of the best performing non-precious OER electrocatalysts in alkaline solution. However, the poor conductivity of NiFe-LDH and the limited number of exposed active sites are still important factors limiting their electrochemical performance. This project intends to reduce the dissolved agglomeration of Ni particles during hydrogen evolution by preparing a special nano-array structure of metal Ni catalyst with certain mechanical strength to improve the hydrogen evolution activity and stability of Ni; The conductivity will be improved by coupling NiFe-LDH to the Ni metal nano-array substrate, and the vertical growth of NiFe-LDH on Ni nano-array will promote the exfoliation of NiFe-LDH nanosheet, which will expose more active sites and improve the oxygen evolution catalytic performance of NiFe LDH. It is expected to be used for the efficient overall water splitting reaction in the two-electrode system with the stable nano-array Ni as the cathode and the nano-array Ni coupled NiFe-LDH as the anode.
期刊论文列表
专著列表
科研奖励列表
会议论文列表
专利列表
Preparation of a Dual-MOF Heterostructure (ZIF@MIL) for Enhanced Oxygen Evolution Reaction Activity
用于增强析氧反应活性的双 MOF 异质结构 (ZIF@MIL) 的制备
DOI:10.1002/asia.202001235
发表时间:2021
期刊:CHEMISTRY-AN ASIAN JOURNAL
影响因子:4.1
作者:Zhao Tao;Wang Dong;Cheng Chen;Zhong Dazhong;Hao Genyan;Liu Guang;Li Jinping;Zhao Qiang
通讯作者:Zhao Qiang
Highly efficient Ni nanotube arrays and Ni nanotube arrays coupled with NiFe layered-double-hydroxide electrocatalysts for overall water splitting
高效镍纳米管阵列和镍纳米管阵列与 NiFe 层状双氢氧化物电催化剂的整体水分解
DOI:10.1016/j.jpowsour.2019.227434
发表时间:2020-02
期刊:Journal of Power Sources
影响因子:9.2
作者:Li D;an;Hao Genyan;Guo Wenjun;Liu Guang;Li Jinping;Zhao Qiang
通讯作者:Zhao Qiang
DOI:--
发表时间:2023
期刊:太原理工大学学报
影响因子:--
作者:郝璐;钟达忠;郝根彦;李晋平;赵强
通讯作者:赵强
NiFe2O4-Ni3S2 nanorod array/Ni foam composite catalyst indirectly controlled by Fe3+ immersion for an efficient oxygen evolution reaction
NiFe2O4-Ni3S2纳米棒阵列/泡沫镍复合催化剂通过Fe3浸入间接控制,可实现高效的析氧反应
DOI:10.1016/j.ijhydene.2021.01.221
发表时间:2021-04-09
期刊:INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
影响因子:7.2
作者:Cheng, Chen;Li, Dandan;Zhao, Qiang
通讯作者:Zhao, Qiang
Loading FeOOH on Ni(OH)2 hollow nanorods to obtain a three-dimensional sandwich catalyst with strong electron interactions for an efficient oxygen evolution reaction
在Ni(OH)2空心纳米棒上负载FeOOH,获得具有强电子相互作用的三维夹层催化剂,用于高效的析氧反应
DOI:10.1039/c9nr08297b
发表时间:2020
期刊:Nanoscale
影响因子:6.7
作者:Guo Wenjun;Li D;an;Zhong Dazhong;Chen Shuai;Hao Genyan;Liu Guang;Li Jinping;Zhao Qiang
通讯作者:Zhao Qiang
国内基金
海外基金