Kunming University of Science and Technology

Jiangsu Fengchi Carbon-based New Materials Research Institute Co., Ltd.

Jiangsu Fengchi Carbon Based New Material Research Institute Co., Ltd

Feng Liang

Da Zhang

Bin Yang

Zhipeng Xie

Minjie Hou

Baoqiang Xu

Wenlong Jiang

Peng Dong

Tao Zhang

Zhenggang Tang

Junxi Li

Sunzu Xiang

Wenhui Ma

Pan Liu

Yongnian Dai

Yao Kang

Xiecheng Yang

Yichang Liu

Long Ma

A method for preparing a carbon nanotube sodiophilic metal anode-free sodium metal battery electrode material is provided, and the method includes the following steps: the carbon nanotubes are modified by a dielectric barrier plasma device; the modified carbon nanotubes are mixed and stirred with a sodiophilic metal salt to obtain a precursor slurry; the precursor slurry is dried, placed in a tube furnace after drying, and heated by introducing a reducing gas to react, thereby obtaining a carbon nanotube sodiophilic metal anode-free sodium metal battery electrode material. The electrode material prepared by the method has a stable structure, excellent electrical conductivity, and excellent sodium affinity, and can be applied to anode-free sodium metal battery electrode materials. The entire preparation process is controllable, the synthesis cycle is short, and the operation is simple.

Carbon nanotube sodiophilic metal anode-free sodium metal battery electrode material, preparation method therefor and application thereof

A rapid preparation method of transition metal borides includes steps of: using a tungsten rod as the cathode, and a block mixture of boron powder and metal oxide as the anode, the block mixture and the tungsten rod are placed in an plasma device; the plasma device is evacuated, and then filled with a buffer gas and an electric arc is started to obtain a transition metal boride. The present disclosure adopts the direct current arc plasma method with the advantages of simple operation, low cost, environmental friendliness and controllable reaction atmosphere to prepare the transition metal boride, the preparation process is simple, the preparation process is fast, and the environment will not be affected.

Preparation method of transition metal borides

A method for preparing a sodium super ionic conductor solid electrolyte by low-dimensional crystallization belongs to a field of energy materials. The method is based on the theory of negative ion coordination polyhedron growth unit, and uses low-temperature plasma as a protective gas of a spray drying equipment. While evaporating the solvent in a sodium super ionic conductor solid electrolyte precursor slurry, plasma active groups modify the particle surface of the sodium super ionic conductor solid electrolyte precursor particles in-situ. A free space dimension of crystal growth in the crystallization process is reduced, and directional growth of crystals in the solid phase sintering process is induced. Secondly, the dispersion stability of the sodium super ionic conductor solid electrolyte precursor particles is improved. Compared with the traditional high-temperature solid-state sintering process, the method has the advantages of fast crystallization speed, high crystal purity and integrity, good compactness, and uniform particles.

Method for preparing sodium super ionic conductor solid electrolyte by low-dimensional crystallization

A method includes the following steps: a first step: the material containing heteroatom and graphite powder are mixed for a preset time by grinding, and the molar ratio of heteroatom to carbon atom is 1%-10%, then the heteroatom precursors are obtained; a second contact step: the heteroatom precursor is filled into a graphite rod with holes and compacted, then the graphite rod is dried for a preset time to obtain a plasma anode and using a DC arc plasma device to prepare the graphite anode into heteroatom-doped CNHs; a third contact step: the heteroatom-doped CNHs are dispersed in a reducing solution, a platinum salt is added to stir evenly, the reduction reaction is carried out by heating and stirring, and after centrifugation, washing and drying, a catalyst with platinum loading is obtained.

Method for preparing heteroatom-doped CNHS

The present disclosure relates to a method for production of CNHs composite material. The method includes the following steps: a first step: the silicon particles and graphite powder are mixed for a preset time by planetary ball mill device, and the weight ratio of silicon element to carbon element is 10-40%, then the Si/C precursor is obtained; a second contact step: the Si/C precursor is pressed into a precursor block, then using precursor block to the CNHs composite material by a DC arc plasma device.

Carbon nanohorns composite material with microwave absorption and tunable absorption bands and method for preparing the same

The present disclosure discloses a method for plasma modification of sodium super ionic conductor type solid electrolyte, which comprises: dielectric barrier discharge plasma modification of sodium super ionic conductor solid electrolyte particles to obtain activated sodium super ionic conductor solid electrolyte particles; weigh the polymer and the activated sodium super ionic conductor solid electrolyte particles in a predetermined proportion, dissolve the polymer and the activated sodium super ionic conductor solid electrolyte particles in an organic solvent to obtain a mixed solution, then pour the mixed solution into a preset mold, and then dry it to remove the organic solvent and form a composite solid electrolyte film. The composite solid electrolyte film is taken out of the mold and rolled to obtain the composite solid electrolyte film after rolling treatment.

Method for plasma modification of sodium super ionic conductor type solid electrolyte

Method for preparing heteroatom-doped CNHs and heteroatom-doped carbon nanohorns supporting platinum, and catalyst

The invention discloses a method about the integration of the metallurgical purification of metallic gadolinium and the preparation of gadolinium oxide nanoparticles (GONPs) by arc plasma. The method includes the metallurgical purification and the nanoparticle preparation. Firstly, the gadolinium ingot and a tungsten rod respectively act as an anode and a cathode. After the arc furnace is evacuated and then is filled with a working atmosphere, impurities in the gadolinium ingot are removed in the form of volatilization to obtain purified gadolinium by the first arc discharge. Whereafter, the purified gadolinium and the tungsten rod are used as the anode and cathode. After the arc furnace also is evacuated and then also is filled with a working atmosphere, GONPs are obtained from the inner wall of the arc furnace though the second arc discharge. The metallurgical purification of metallic gadolinium and the preparation of GONPs were integrated by arc plasma.

Integrated method for purifying metal gadolinium and preparing gadolinium oxide nanomaterials by arc plasma

The present disclosure relates to a method for production of nitrogen-doped single wall carbon nanohorns from anode graphite of wasted lithium-ion batteries. The method includes the following steps: a first step: forming recycled graphite powder into graphite blocks; and, a second contact step: when the first step is completed, using a DC arc plasma device to produce the graphite blocks into N-SWCNHs.

Growing community of inventors

Kunming, China

Feng Liang