电化学(中英文) ›› 2026, Vol. 32 ›› Issue (7): 2603211. doi: 10.61558/2993-074X.3615
夏能楚a,b, 周宇b, 王琴a, 张家友b, 余春b, 张旸b, 官万兵b, 王建新b,*(
)(
)
收稿日期:2026-03-31
修回日期:2026-04-26
接受日期:2026-05-14
发布日期:2026-05-14
出版日期:2026-07-28
Neng-Chu Xiaa,b, Yu Zhoub, Qin Wanga, Jia-You Zhangb, Chun Yub, Yang Zhangb, Wan-Bing Guanb, Jian-Xin Wangb,*(
)(
)
Received:2026-03-31
Revised:2026-04-26
Accepted:2026-05-14
Online:2026-05-14
Published:2026-07-28
Contact:
* Jian-Xin Wang, Email address: jxwang@nimte.ac.cnAbout author:Author Contributions
Neng-Chu Xia: Conceptualization, data curation, formal analysis, investigation, and writing-original draft. Yu Zhou: Conceptualization, investigation, and project administration. Qin Wang: Project administration. Jia-You Zhang: Software and supervision. Chun Yu: Supervision and validation. Yang Zhang: Writing-review & editing. Wan-Bing Guan: Funding acquisition, resources, validation, and writing-review & editing. Jian-Xin Wang: Methodology, supervision, project administration, and writing-review & editing. All authors discussed the results, reviewed the manuscript, and approved the final version.
摘要:
莫来石结构氧化物具有优异的氧还原反应(ORR)活性,得益于其独特的晶体结构而表现出较低的热膨胀系数(TEC),且由于不含碱土元素,可避免使用阻挡层并简化制备工艺。因此,它们作为新型固体氧化物燃料电池(SOFC)阴极材料具有广阔的应用前景。本工作通过固-液复合路线一步法合成了莫来石-尖晶石结构的SmMn2O5-NiMn2O4(SMO-NMO)复合阴极,其原位自组装特性使其在无需阻挡层的情况下即可与电解质实现良好的界面匹配。表征结果表明,当SMO:NMO=5:5(SN55)时,复合阴极通过两相之间的协同作用,克服了单相材料的性能瓶颈-即纯SMO导电性低(800 °C时仅为0.035 S·cm-1)以及纯NMO氧还原反应(ORR)活性不足的问题。在800 °C下,全电池的峰值功率密度达到1069.82 mW·cm-2,分别为纯SMO(329.92 mW cm-2)和纯NMO(890.20 mW·cm-2)的3.24倍和1.20倍。以SN55为阴极的全电池在750 °C、540 mA·cm-2条件下恒流放电150 h后,电压衰减约为1.6%,平均衰减率为5.62%/kh,且阴极-电解质界面未出现任何缺陷与元素偏析。本研究为设计无阻挡层固体氧化物燃料电池(SOFC)阴极材料提供了一条新的思路。
夏能楚, 周宇, 王琴, 张家友, 余春, 张旸, 官万兵, 王建新. 原位自组装SmMn2O5-NiMn2O4双相复合阴极的制备及性能研究[J]. 电化学(中英文), 2026, 32(7): 2603211.
Neng-Chu Xia, Yu Zhou, Qin Wang, Jia-You Zhang, Chun Yu, Yang Zhang, Wan-Bing Guan, Jian-Xin Wang. Preparation and Performance Study of In-Situ Self-Assembled Biphasic SmMn2O5-NiMn2O4 Composite Cathode[J]. Journal of Electrochemistry, 2026, 32(7): 2603211.
| cathode | 800 ℃ | 750 ℃ | 700 ℃ | 650 ℃ | 600 ℃ |
|---|---|---|---|---|---|
| SMO | 329.92 | 192.68 | 101.59 | 38.94 | 16.36 |
| NMO | 890.20 | 612.97 | 253.27 | 64.69 | 10.18 |
| SN91 | 525.02 | 325.12 | 190.87 | 86.56 | 39.53 |
| SN82 | 571.19 | 350.90 | 200.57 | 105.66 | 53.55 |
| SN73 | 603.54 | 415.28 | 253.92 | 133.76 | 44.83 |
| SN64 | 787.12 | 470.16 | 214.92 | 107.93 | 45.46 |
| SN55 | 1069.82 | 725.50 | 357.44 | 204.18 | 78.35 |
| SN46 | 786.55 | 483.26 | 281.16 | 145.93 | 64.12 |
| Modification type | Cathode composition | PPD at 800 °C/(W·cm-2) | Ref. |
|---|---|---|---|
| Ni-doping | Pr0.5Sr0.5FeO3−δ | 0.898 | [ |
| Ni-doping | La0.6Sr0.4FeO3−δ | 0.853 | [ |
| Ni-containing impregnation | LaCo0.6Ni0.4O3-δ-PrBa0.5Sr0.5Co1.5Fe0.5O5+δ | 0.838 | [ |
| NiO modification | LSCF-5wt%NiO | 1.031 | [ |
| This work | 50wt%SmMn2O5-50wt%NiMn2O4 | 1.069 | / |
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