La-Nd-Y-Ni系A5B19型储氢合金表面原位合成Ni3S2@MoS2改性及其电化学性能

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摘要作为镍氢电池的负极材料，储氢合金在很大程度上决定镍氢电池的性能，其表面的腐蚀或氧化层不但会导致合金电极的循环寿命大大衰减，而且对高倍率性能也有很大的影响，因此，限制了镍氢电池在高功率以及极端环境等领域的应用。基于上述原因，研究人员通过各种方法在合金电极表面制备出电催化活性高以及导电性好且结合力比较牢固的过渡金属硫化物活性层，可以明显改善合金电极的电化学性能。在课题组研究基础上，制备了新型 A5B19 型La-Y-Ni 系退火合金La0.25Nd0.2Y0.55Ni16.1Co1.5Mn0.9Al0.9，通过不同温度的水热处理在合金表面成功原位生长Ni3S2@MoS2，利用XRD、SEM/EDS、XPS以及电化学方法系统研究了Ni3S2@MoS2对合金相组成、储氢性能和电化学性能的影响规律和作用。结果表明，随水热处理时间的增加，合金电极的活化性能有所降低，循环寿命和高倍率性能都有了不同程度的提高，并且在120℃处理时，循环寿命S100=92%相比于未处理条件下S100=85.9%提升最高，在160℃处理时，合金电极的高倍率性能HRD1800=65.8%（未处理条件下HRD1800=37.3%），达到了最大。在储氢合金表面原位生长Ni3S2/MoS2，不仅改善了合金表面耐腐蚀性能，同时还提升了合金电极的高倍率放电性能。这种经济高效的新型硫化方法使得镍氢电池在高功率领域、极端环境下的应用成为可能。

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	沈秉金
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关键词 ： La-Nd-Y-Ni系储氢合金, 原位合成, 电化学性能

Abstract：As the anode material of Ni-MH batteries, the hydrogen storage alloy largely determines the performance of Ni-MH batteries. The corrosion or oxidation layer on its surface not only causes the cycle life of the alloy electrode to be greatly decayed, but also has a great impact on the high-magnification performance, thus limiting the application of NiMH batteries in the fields of high power and extreme environments. Based on the above reasons, researchers prepared the active layer of transition metal sulfide with high electrocatalytic activity as well as good electrical conductivity and strong bonding on the surface of alloy electrode by various methods, which can significantly improve the electrochemical performance of alloy electrode. Based on the research of the group, a new La-Y-Ni annealed alloy La0.25Nd0.2Y0.55Ni16.1Co1.5Mn0.9Al0.9 of type A5B19 was prepared, and Ni3S2@MoS2 was successfully grown in situ on the alloy surface by hydrothermal treatment at different temperatures. The effects of Ni3S2@MoS2 on the phase composition, hydrogen storage properties and electrochemical properties of the alloy were investigated by XRD, SEM/EDS, XPS and electrochemical methods. The results showed that the activation performance of the alloy electrode decreased with the increase of hydrothermal treatment time, and the cycle life and high multiplicity performance improved to different degrees, and the cycle life S100=92% was the highest improvement at 120℃ treatment compared with S100=85.9% at untreated condition, and the high multiplicity performance HRD1800=65.8% at 160℃ treatment (HRD1800=37.3% under untreated condition), which reached the maximum. The in situ growth of Ni3S2/MoS2 on the surface of the hydrogen storage alloy not only improves the corrosion resistance of the alloy surface, but also enhances the high-magnification discharge performance of the alloy electrode. This new cost-effective sulfidation method makes it possible to apply Ni-MH batteries in high power areas and extreme environments.

Key words： La-Nd-Y-Ni hydrogen storage alloy In situ synthesis Electrochemical performance

收稿日期: 2023-04-23 出版日期: 2023-10-18

基金资助:国家自然科学基金资助项目

通讯作者: 罗永春 E-mail: luoyc@lut.cn

引用本文:

沈秉金赵刘强周健飞张乾坤罗永春. La-Nd-Y-Ni系A5B19型储氢合金表面原位合成Ni3S2@MoS2改性及其电化学性能[J]. , 2023, (5): 0-0.

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http://edit.chinamet.cn/Jweb_jsgncl/CN/ 或 http://edit.chinamet.cn/Jweb_jsgncl/CN/Y2023/V/I5/0

[1]GAO Y, ZHAO L J.Review on recent advances in nanostructured transition-metal-sulfide-based electrode materials for cathode materials of asymmetric supercapacitors[J]. Chemical Engineering Journal, 2022, 430: 132745.
[2]ZHANG N, LEI J Y, XIE J P, et al.MoS2Ni3S2 nanorod arrays well-aligned on Ni foam: a 3D hierarchical efficient bifunctional catalytic electrode for overall water splitting[J].RSC Advances, 2017, 7(73):46286-46296.
[3]PETER G, STEFAN A, LAURENCE J, et al.Li–O2 and Li–S batteries with high energy storage[J].Nature Materials, 2012, 11(1):19-29.
[4]LIU Z M, YU X Y, LOU X W, et al.Sb@C coaxial nanotubes as a superior long-life and high-rate anode for sodium ion batteries[J].Energy & Environmental Science, 2016, 9(7):2314-2318.
[5]PECH D, BRUNET M, DUROU H, et al.Ultrahigh-power micrometre-sized supercapacitors based on onion-like carbon[J].Nature Nanotechnology, 2010, 5(9):651-654.
[6]YANG C C, WANG C C, LI M M, et al.A start of the renaissance for nickel metal hydride batteries: a hydrogen storage alloy series with an ultra-long cycle life[J].Journal of Materials Chemistry A, 2017, 5(3):1145-1152.
[7]ARMAND M, TARASCON J M.Building better batteries[J].Nature, 2008, 451(7179):652-657
[8]SCHLAPBACH L, ZüTTEL A.Hydrogen-storage materials for mobile applications[J].Nature, 2001, 414(6861):353-358
[9]KLEPERIS J, CZERWINSKI A, KOPCZYK M, et al.Electrochemical behavior of metal hydrides[J].Journal of Solid State Electrochemistry, 2001, 5(4):229-249
[10]LI M M, WANG C C, YANG C C.Development of high-performance hydrogen storage alloys for applications in nickel-metal hydride batteries at ultra-low temperature[J]. Journal of Power Sources, 2021, 491: 229585.
[11]KONG L, CHEN B, YOUNG K, et al.Effects of Al- and Mn-contents in the negative MH alloy on the self-discharge and long-term storage properties of Ni/MH battery[J]. Journal of Power Sources, 2012, 213: 128-139.
[12]SRIVASTAVA S, UPADHYAY R K.Investigations of AB5-type negative electrode for nickel-metal hydride cell with regard to electrochemical and microstructural characteristics[J].Journal of Power Sources, 2010, 195(9):2996-3001
[13]JI Z J, WANG Z M, DENG J Q, et al, Effects of surface treatment on electrochemical properties of AB.type hydrogen storage alloy in alkaline electrolyte[J].Russian Journal of Electrochemistry, 2015, 51(3):244-248
[14]ZHAO X Y, MA L Q, DING Y, et al.Novel surface treatment for hydrogen storage alloy in NiMH battery[J].International Journal of Hydrogen Energy, 2009, 34(8):3506-3510
[15]ZHANG W C, HAN S M, HAO J S, et al.Study on kinetics and electrochemical properties of low-Co AB5-type alloys for high-power NiMH battery[J].Electrochimica Acta, 2009, 54(4):1383-1387
[16]LIU H, ZHANG J X, ZHOU C H, et al.Hydrogen storage properties of Ti-Fe-Zr-Mn-Nb alloys[J]. Journal of Alloys and Compounds, 2023, 938: 168446.
[17]LI S, PAN G L, ZHANG Y, et al.Electrochemical properties of MmNi36Co0.7Al0.3Mn0.4 alloy containing carbon nanotubes[J].Journal of Alloys and Compounds, 2003, 353(1-2):295-300
[18]LI S C, YIN W Q, QIAO Y Q.Enhanced electrochemical properties of ball-milled LaY2Ni9.5Mn0.5Al0.5 hydrogen storage alloy with graphene[J]. Journal of Physics and Chemistry of Solids, 2022, 160: 110347.
[19]LI M M, YANG C C, CHEN L X, et al.Hydrogen storage alloys/reduced graphite oxide: an efficient hybrid electrode with enhanced high-rate dischargeability[J]. Electrochimica Acta, 2016, 200: 59-65.
[20]SUBBARAMAN R, TRIPKOVIC D, STRMCNIK D, et al.Enhancing hydrogen evolution activity in water splitting by tailoring Li+-Ni(OH)2-Pt interfaces[J].Science, 2011, 334(6060):1256-60
[21]CHEN L X, ZHU Y F, YANG C C, et al.A new strategy to improve the high-rate performance of hydrogen storage alloys with MoS2 nanosheets[J]. Journal of Power Sources, 2016, 333: 17-23.
[22]KURU C, ALAF M, SIMSEK Y E.Ni–Mo–S Ternary Chalcogenide Thin Film for Enhanced Hydrogen Evolution Reaction[J].Catalysis Letters, 2021, 151(8):2228-2236
[23]赵娟, 吴梦成, 雷惊雷, 等.一步水热法制备电解水析氧反应@高效催化剂[J].化工学报, 2022, 73(04):1575-1584
[24]WANG J, LIU J L, YANG H, et al.MoS2 nanosheets decorated Ni3S2@MoS2 coaxial nanofibers: Constructing an ideal heterostructure for enhanced Na-ion storage[J]. Nano Energy, 2016, 20: 1-10.
[25]ZHANG J, WANG T, POHL D, et al.Interface Engineering of MoS2Ni3S2 Heterostructures for Highly Enhanced Electrochemical Overall-Water-Splitting Activity[J].Angewandte Chemie Internatiaoal Edition, 2016, 55(23):6702-6707
[26]KIBSGAARD J, CHEN Z B, REINECKE B N, et al.Engineering the surface structure of MoS2 to preferentially expose active edge sites for electrocatalysis[J].Nature Materials, 2012, 11(11):963-969
[27]LI J C, ZHOU W H, ZHU D, et al.Ni3S2-coated metal hydride anode with high-power and long-life performance for low-temperature Ni-MH power batteries[J]. Chemical Engineering Journal, 2020, 379: 122204.
[28]HARAN B S, POPOV B N, WHITE R E.Theoretical Analysis of Metal Hydride Electrodes: Studies on Equilibrium Potential and Exchange Current Density[J].Journal of The Electrochemical Society, 1998, 145(12):4082-
[29]SHI Q Q, ZHANG Q, ZANG Q, et al.Construction of Ni–Mo sulfides core-shell nanoneedle arrays for hybrid supercapacitors with high mass loading[J]. Journal of Power Sources, 2020, 475: 228631.