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4483results about "Silicon compounds" patented technology

Conductive lithium storage electrode

A compound comprising a composition Ax(M′1-aM″a)y(XD4)z, Ax(M′1-aM″a)y(DXD4)z, or Ax(M′1-aM″a)y(X2D7)z, and have values such that x, plus y(1-a) times a formal valence or valences of M′, plus ya times a formal valence or valence of M″, is equal to z times a formal valence of the XD4, X2D7, or DXD4 group; or a compound comprising a composition (A1-aM″a)xM′y(XD4)z, (A1-aM″a)xM′y(DXD4)z(A1-aM″a)xM′y(X2D7)z and have values such that (1-a)x plus the quantity ax times the formal valence or valences of M″ plus y times the formal valence or valences of M′ is equal to z times the formal valence of the XD4, X2D7 or DXD4 group. In the compound, A is at least one of an alkali metal and hydrogen, M′ is a first-row transition metal, X is at least one of phosphorus, sulfur, arsenic, molybdenum, and tungsten, M″ any of a Group IIA, IIIA, IVA, VA, VIA, VIIA, VIIIA, IB, IIB, IIIB, IVB, VB, and VIB metal, D is at least one of oxygen, nitrogen, carbon, or a halogen, 0.0001<a≦0.1, and x, y, and z are greater than zero. The compound can have a conductivity at 27° C. of at least about 10−8 S/cm. The compound can be a doped lithium phosphate that can intercalate lithium or hydrogen. The compound can be used in an electrochemical device including electrodes and storage batteries and can have a gravimetric capacity of at least about 80 mAh/g while being charged/discharged at greater than about C rate of the compound.
Owner:MASSACHUSETTS INST OF TECH

Multifunctional composite absorbing material for purifying water and preparation method thereof

The invention provides a multifunctional composite absorbing material for purifying water and a preparation method thereof, relating to an absorbing material. The invention provides the multifunctional composite absorbing material for purifying water, which can be used for effectively removing a plurality of harmful substances in the water and has higher removal efficiency and lower production cost, and the preparation method thereof. The absorbing material is selected from at least one of absorbing materials A, B and C; the absorbing material A takes a mesoporous adsorption ceramic material as a carrier to load nano metals including nano silver, nano zinc, nano iron and nano cerium; the absorbing material B takes the mesoporous adsorption ceramic material as the carrier to load nano metal oxides including nano titanium dioxide, nano zinc oxide, nano ferric oxide and nano cerium dioxide; and the absorbing material C is prepared from the following raw materials according to the mass ratio: 100-200 parts of active carbon powder, 20-30 parts of polyethylene powder, 10-30 parts of calcium sulfite powder, 10-30 parts of natural zeolite powder, 20-40 parts of macroporous acrylic resin and 10-20 parts of attapulgite powder.
Owner:XIAMEN BAILIN WATER PURIFICATION TECH CO LTD
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