A Soft and Robust Spring Based Triboelectric Nanogenerator for Harvesting Arbitrary Directional Vibration Energy and Self-Powered Vibration Sensing

Abstract Vibration is a common mechanical phenomenon and possesses mechanical energy in ambient environment, which can serve as a sustainable source of power for equipment and devices if it can be effectively collected. In the present work, a novel soft and robust triboelectric…

Spontaneous Growth of 3D Framework Carbon from Sodium Citrate for High Energy- and Power-Density and Long-Life Sodium-Ion Hybrid Capacitors

Abstract Carbon sheets with 3D architectures, large graphitic interlayer spacing, and high electrical conductivity are highly expected to be an ideal anode material for sodium-ion hybrid capacitors (SIHCs). Pursuing a simple synthesis methodology and advancing it from the laboratory to industry is of…

Doping of Ni and Zn Elements in MnCO3: High-Power Anode Material for Lithium–Ion Batteries

Abstract Herein, Ni and Zn elements are doped simultaneously in MnCO3 and microspheric MnxNiyZnzCO3 is successfully obtained. Atomic mapping images reveal that the Ni and Zn elements have been successfully doped in MnCO3 and thus the prepared sample is not a mixture of…

High Performance of N-Doped Graphene with Bubble-like Textures for Supercapacitors

Abstract Nitrogen-doped graphene (NG) with wrinkled and bubble-like texture is fabricated by a thermal treatment. Especially, a novel sonication-assisted pretreatment with nitric acid is used to further oxidize graphene oxide and its binding with melamine molecules. There are many bubble-like nanoflakes with a…

Facile Metal Coordination of Active Site Imprinted Nitrogen Doped Carbons for the Conservative Preparation of Non-Noble Metal Oxygen Reduction Electrocatalysts

Abstract Iron- or cobalt-coordinated heteroatom doped carbons are promising alternatives for Pt-based cathode catalysts in polymer-electrolyte fuel cells. Currently, these catalysts are obtained at high temperatures. The reaction conditions complicate the selective and concentrated formation of metal–nitrogen active sites. Herein a mild procedure…

In Situ EXAFS-Derived Mechanism of Highly Reversible Tin Phosphide/Graphite Composite Anode for Li-Ion Batteries

Abstract A novel Sn4P3/graphite composite anode material with superior capacity and cycling performance (651 mA h g−1 after 100 cycles) is investigated by in situ X-ray absorption spectroscopy. Extended X-ray absorption fine structure modeling and detailed analysis of local environment changes are correlated…

Cobalt Iron Hydroxide as a Precious Metal-Free Bifunctional Electrocatalyst for Efficient Overall Water Splitting

Abstract Highly efficient and stable electrocatalysts from inexpensive and earth-abundant elements are emerging materials in the overall water splitting process. Herein, cobalt iron hydroxide nanosheets are directly deposited on nickel foam by a simple and rapid electrodeposition method. The cobalt iron hydroxide (CoFe/NF)…

Rational Construction of Hollow Core-Branch CoSe2 Nanoarrays for High-Performance Asymmetric Supercapacitor and Efficient Oxygen Evolution

Abstract Metal selenides have great potential for electrochemical energy storage, but are relatively scarce investigated. Herein, a novel hollow core-branch CoSe2 nanoarray on carbon cloth is designed by a facile selenization reaction of predesigned CoO nanocones. And the electrochemical reaction mechanism of CoSe2…

Ag-Doped PEDOT:PSS/CNT composites for thin-film all-solid-state supercapacitors with a stretchability of 480%

J. Mater. Chem. A, 2018, Advance ArticleDOI: 10.1039/C7TA09154K, PaperYaping Zhu, Ning Li, Tian Lv, Yao Yao, Huanan Peng, Jun Shi, Shaokui Cao, Tao ChenA highly flexible and stretchable all-solid-state supercapacitor that can bear a tensile strain as high as 480% is developed by…

Confinement of the Polysulfides within the Bi-functional Metal-Organic Framework for High Performance Lithium-Sulfur battery

Nanoscale, 2017, Accepted ManuscriptDOI: 10.1039/C7NR07118C, PaperXu-Jia Hong, Tian-Xiong Tan, Yu-Kai Guo, Xue-Ying Tang, Jianyi Wang, Wei Qin, Yue-Peng CaiLithium-sulfur (Li-S) battery is regarded as the most promising candidate for the next generation energy storage system, because of its high theoretical specific capacity (1675…