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| 1 | Spacing graphene and Ni-Co layered double hydroxides with polypyrrole for high-performance supercapacitors显示文摘The urgent need of high-performance of energy storage devices triggers us to design newly class of materials.Generally,the materials feature with high conductivity,abundant pore s and excellent stability.Here,a sandwiched hybrid composite containing reduced graphene oxide,polypyrrole and Ni-Co layered double hydroxides(RGO/PPy/NiCo-LDH) was prepared in a facile way.The polypyrrole was incorporated in the two dimensional(2D) nanosheets,which not only serve as the spacer to increase the surface area,but also enhance the conductivity of the nanocomposite.The obtained architecture was employed as an advanced electrode in a supercapacitor.The electrode shows an ultrahigh specific capacitance(2534 F g^-1 at 1 A g^-1) and good cycling efficiency(78 % after 5000 cycles).Moreover,an asymmetric cell based RGO/PPy/NiCo-LDH composite demonstrates excellent electrochemical properties and good prospect of practical use. | Jing Liang Cuili Xiang Yongjin Zou Xuebu Hu Hailiang Chu Shujun Qiu Fen Xu Lixian Sun | 2020 | Journal of Materials Science & Technology2020，52，20： | 3 |
| 2 | 显示文摘 | Lin Ziji Hu Xuebu Huai Yongjian | 2010 | Solid State Ion- ics2010，181，810： | 1 |
| 3 | Effects of carbon source and carbon content on electrochemical performances of Li4Ti5O12/C prepared by one-step solid-state reaction显示文摘 | Xuebu Hu Ziji Lin Kerum Yang | | 0，，： | 1 |
| 4 | Low-temperature synthesis of sea urchin-like Co-Ni oxide on graphene oxide for supercapacitor electrodes显示文摘Transition metal oxides are ideal electrode materials used for supercapacitors.However,the synthesis of transition metal oxides suffers from drawbacks such as high reaction temperature and energy consumption.Herein,we report the synthesis of sea urchin-like Co3 O4-NiO composites supported on graphene oxide(GO) using a hydrothermal method followed by calcination with a low temperature(250℃).The obtained Co3O4-NiO/GO composite demonstrates a high specific capacitance of 883 F g^-1 at 1 A g^-1.Furthermore,upon coupling with an activated carbon(AC) positive electrode,an asymmetric cell of Co3 O4-NiO/GO//AC exhibits outstanding stability reflected by the high capacitance retention of 82% at a high current density of 10 A g^-1.The excellent electrochemical properties of the composite may be attributed to the good synergistic effect of Co3O4 and NiO,as well as the assembly of Co3 O4 and NiO into a sea urchin structure,which results in increased electron conductivity and more exposed electroactive sites leading to the promotion of the Faradaic redox process. | Xueying Yang Cuili Xiang Yongjin Zou Jing Liang Huanzhi Zhang Erhu Yan Fen Xu Xuebu Hu Qiong Cheng Lixian Sun | 2020 | Journal of Materials Science & Technology2020，52，20： | 1 |
| 5 | One-step synthiese of Li4 Ti5 012 IC anode material with high performance for lithium-ion batteries显示文摘 | Lin Ziji Hu Xuebu Huai Yongjian | 2010 | Solid State Ionics2010，181，： | 1 |
| 6 | Effects of carbon source and carbon content on electrochemical performances of Li 4 Ti 5 O 12 /C prepared by one-step solid-state reaction显示文摘 | Xuebu Hu Ziji Lin Kerun Yang Yongjian Huai Zhenghua Deng | 2011 | Electrochimica Acta2011，，14： | 1 |
| 7 | A high rate, high capacity and long life (LiMn204+AC)/Li4TisO12 hybrid battery-super capacitor显示文摘 | Xuebu Hu Zhenghua Deng Jishuan Suo | 2009 | Journal of Power Sources2009，187，： | 1 |
| 8 | A high rate, high capacity and long life (LiMn2O4+AC)/ Li4Ti4O12 hybrid battery-super capacitor显示文摘 | Xuebu Hu Zhenghua Deng Jishuan Suo | 2009 | Journal of Power Sources2009，187，： | 1 |
| 9 | LiZr_(2)(PO_(4))_(3)surface coating towards stable layer structure Li_(1.2)Mn_(0.54)Ni_(0.13)Co_(0.13)O_(2)cathode materials with long cycle performance显示文摘Li-rich manganese-based materials are considered to be the mainstream cathode materials for next-generation lithium-ion batteries due to high discharge capacity and low cost,but poor cycle life and high temperature performance limit their development.Herein,LiZr_(2)(PO_(4))_(3)(LZPO)is coated on the surface of spherical Li_(1.2)Mn_(0.54)Ni_(0.13)Co_(0.13)O_(2)(LMNCO)material by a simple wet chemical method.The LZPO layer not only has the function of traditional coating layer to inhibit the occurrence of side reactions between electrolyte and LMNCO surface but also promotes the formation of spinel phase in the layered structure,increases the content of lattice oxygen,and reduces the content of absorbed oxygen.Thus,LZPO coated LMNCO has a more stable layered structure during cycling compared pure LMNCO,which improves effectively its long life and high temperature performance.The capacity loss rate of LZPO coated LMNCO is only 16.2%and 11.9%after 350 cycles at 25℃and 200 cycles at 50℃,respectively.Moreover,the capacity retention rate of the full cell composed of LZPO coated LMNCO and graphite is 70.7%after 200 cycles at 1.0 C.The coating layer toward stable surface structure can provide an idea for the modification of cathode materials,especially for Li-rich manganese-based materials. | Hao Yang Jie Wang Changsheng Xu Kewei Wu Fangfang Zou Xuebu Hu Zhongli Hu | 2023 | Nano Research2023，16，2： | 0 |
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