通过化学沉积法制备了氧化锰/多孔炭(Porous carbon,简称PC)复合材料,考察了氧化锰负载量及热处理温度对其理化性能的影响,探讨了氧化锰/多孔炭复合电极的充放电机理.SEM照片及孔结构测试结果表明,常温下化学沉积法负载氧化锰不但负载均匀,而且还对多孔炭的孔结构起到修饰作用;但经400℃以上高温处理后,其均匀性受到破坏.XRD测试结果表明,经110℃干燥处理及400℃高温处理的复合电极材料负载的氧化锰为无定型结构,800℃时则转变为γ-Mn2O3.经电化学测试表明化学沉积法负载氧化锰可以有效地提高多孔炭电极材料的电能存储容量,当多孔炭负载质量分数1.7%氧化锰,在空气中110℃干燥,制得复合材料的单电极比电容达到340F/g,比单纯的多孔炭电极提高34%.
参考文献
[1] | 王芙蓉,李开喜,吕春祥,吕永根,李强,李建刚,孙成功.酚醛树脂基活性炭微球的电化学性能研究Ⅰ.酚醛树脂基微球制备过程的研究[J].新型炭材料,2005(01):58-62. |
[2] | 李强,李开喜,王芙蓉,孙国华.针状焦基活性炭的制备及其作为EDLCs电极材料的电化学性能[J].新型炭材料,2005(04):335-342. |
[3] | 刘希邈,詹亮,滕娜,杨登莲,曾小春,张睿,凌立成.超级电容器用沥青焦基活性炭的制备及其电化学性能[J].新型炭材料,2006(01):48-53. |
[4] | 景茂祥,沈湘黔,沈裕军,邓春明,翟海军.超级电容器氧化物电极材料的研究进展[J].矿冶工程,2003(02):73-76. |
[5] | 戴贵平,刘敏,王茂章,成会明.电化学电容器中炭电极的研究及开发I. 电化学电容器[J].新型炭材料,2002(01):71-79. |
[6] | Jeng-Kuei Chang;Wen-Ta Tsai .Material Characterization and Electrochemical Performance of Hydrous Manganese Oxide Electrodes for Use in Electrochemical Pseudocapacitors[J].Journal of the Electrochemical Society,2003(10):A1333-A1338. |
[7] | 刘献明,张校刚.电化学电容器电极材料超细MnO2的制备及表征[J].化学研究与应用,2003(04):515-517. |
[8] | Pang S.C.;Anderson M.A. .Novel Electrode Materials for Thin-Film Ultracapacitors: Comparison of Electrochemical Properties of Sol-Gel-Derived and Electrodeposited Manganese Dioxide[J].Journal of the Electrochemical Society,2000(2):444-450. |
[9] | Kalakodimi Rajendra Prasad;Norio Miura .Potentiodynamically deposited nanostructured manganese dioxide as electrode material for electrochemical redox supercapacitors[J].Journal of Power Sources,2004,135:354-360. |
[10] | J. N. Broughton;M. J. Brett .Investigation of thin sputtered Mn films for electrochemical capacitors[J].Electrochimica Acta,2004(25):4439-4446. |
[11] | 孟庆函 .双电层电容器电极材料的制备及电化学性能研究[D].中国科学院山西煤炭化学研究所,2002. |
[12] | 孟庆函,刘玲,宋怀河,凌立成.金属Mn/活性炭电极材料电化学性能的研究[J].功能材料,2004(02):209-211. |
[13] | AL-Sagheer FA.;Zaki MI. .Surface properties of sol-gel synthesized delta-MnO2 as assessed by N-2 sorptometry, electron microscopy, and X-ray photoelectron spectroscopy[J].Colloids and Surfaces, A. Physicochemical and Engineering Aspects,2000(1/3):193-204. |
[14] | Xiangying Chen;Xiaoxuan Li;Ying Jiang;Chengwu Shi;Xueliang Li .Rational synthesis of α-MnO_2 and γ-Mn_2O_3 nanowires with the electrochemical characterization of α-MnO_2 nanowires for supercapacitor[J].Solid State Communications,2005(2):94-96. |
[15] | Zheng JP.;Jow TR.;Cygan PJ. .HYDROUS RUTHENIUM OXIDE AS AN ELECTRODE MATERIAL FOR ELECTROCHEMICAL CAPACITORS[J].Journal of the Electrochemical Society,1995(8):2699-2703. |
[16] | 张治安,杨邦朝,邓梅根,胡永达.无定型氧化锰超级电容器电极材料[J].功能材料与器件学报,2005(01):58-62. |
[17] | Mengqiang Wu;Graeme A. Snook;George Z. Chen;Derek J. Fray .Redox deposition of manganese oxide on graphite for supercapacitors[J].Electrochemistry communications,2004(5):499-504. |
[18] | B. Djurfors;J.N. Broughton;M.J. Brett .Electrochemical oxidation of Mn/MnO films: formation of an electrochemical capacitor[J].Acta materialia,2005(4):957-965. |
[19] | 唐致远,耿新,王占良,徐国祥.MnO2的制备及其在电化学电容器中的应用[J].过程工程学报,2003(04):351-355. |
[20] | 夏熙.二氧化锰电极电化学(2)[J].电池工业,2005(02):118-120. |
[21] | Bouzid Messaoudi;Suzanne Joiret;Michel Keddam;Hisasi Takenouti .Anodic behaviour of manganese in alkaline medium[J].Electrochimica Acta,2001(16):2487-2498. |
[22] | 夏熙.二氧化锰及相关锰氧化物的晶体结构、制备及放电性能(4)[J].电池,2005(03):199-203. |
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