The invention relates to alkaline secondary batteries. The secondary battery contains a cathode, an anode and an electrolyte, said secondary battery being arranged between the cathode and anode and comprises an alkali metal ion conductive contact to the cathode and to the carbon layer of the anode. The anode contains or consists of a carbon layer, whereby the carbon layer, alone or in combination with an electrically conductive substrate, forms with an electrically conductive contact.

The present disclosure provides a cobalt-free lamellar cathode material and a method for preparing the cobalt-free lamellar cathode material, and a lithium ion battery. The cobalt-free lamellar cathode material is of a core-shell structure, and a material forming an outer shell of the core-shell structure comprises titanium nitride and a material forming an inner core of the core-shell structure does not comprise cobalt and is of a monocrystal structure. According to the cobalt-free lamellar cathode material provided by the present disclosure, the surface of the cobalt-free inner core is coated with highly conductive titanium nitride, such that while the price cost of the cathode material is lowered, the rate capability of the cathode material can be improved, and thus the rate capability of the cobalt-free cathode material is better.

An electrically conductive hybrid membrane, including a solid membrane substrate including a curable material; and electrically conductive particle disposed on the solid membrane substrate, wherein the solid membrane substrate has an elastic modulus of about 10 MPa to about 1000 MPa, and the electrically conductive particle is exposed on both sides of the solid membrane substrate.

An anode active material for a secondary battery according to an embodiment of the present invention includes a core particle, a polymer coating formed on a surface of the core particle, and conductive particles formed on the polymer coating. The conductive particles have an average particle diameter greater than a thickness of the polymer coating. The anode active material and a secondary battery having improved stability and reduced resistance are provided using the polymer coating and the conductive particles.

A positive electrode sheet containing a high-safety heat-sensitive coating and a lithium-ion battery containing the positive electrode sheet are provided. The heat-sensitive coating includes a first conductive agent, a first binder, heat-sensitive polymer microspheres and an auxiliary agent, and has a conductive property at normal temperature and also has advantages of increasing a contact area between an active material and a current collector, improving the conductivity, and effectively reducing the polarization of battery and the like; when the use temperature of the positive electrode sheet reaches 120° C. and above, the heat-sensitive polymer microspheres will melt to form a plurality of continuous electron blocking layers, current blocking occurs in the coating, an internal blocking forms inside the battery, thereby preventing the occurrence of further thermal runaway of lithium-ion battery.

A printed battery that supplies a transmission and/or reception unit of an RFID tag with an electrical current of at peak ≥ 400 mA includes a layer stack having an anode configured as a layer that contains particulate metallic zinc or a particulate metallic zinc alloy as an active electrode material and a first resilient binder or binder mixture, and a cathode configured as a layer that contains a particulate metal oxide as an active electrode material, at least one conductivity additive to control the electrical conductivity of the cathode, and a second resilient binder or binder mixture, and a separator configured as a layer that electrically insulates the anode and the cathode from one another, a first electrical conductor in direct contact with the anode, and a second electrical conductor in direct contact with the cathode, and a housing that encloses the layer stack.

A composite positive electrode material for a lithium ion battery, a preparation method therefor, and a use thereof. The composite positive electrode material comprises a positive electrode material core and a halide coating layer that is coated on the surface of the positive electrode material core, wherein halide comprises Li.sub.3YX.sub.6, and X is at least one among halogens. By means of the coating of the halide coating layer, the ionic conductivity and structural stability of the positive electrode material are greatly increased, which reduces the surface impedance of the material.

A cobalt-free single crystal composite material, and a preparation method therefor and a use thereof. The cobalt-free single crystal material is of a core-shell structure, the core layer is the cobalt-free single crystal material, and the shell layer is prepared from TiNb.sub.2O.sub.7 and conductive lithium salt. The TiNb.sub.2O.sub.7 and the conductive lithium salt are selected as materials of the shell layer to coat the cobalt-free single crystal material, thereby improving the lithium ion conductivity of the cobalt-free single crystal material, and further improving the capacity and the first effect of the material.

A conductive additive a small amount of which is used for forming an active material layer with high electron conductivity is provided. An electrode for a secondary battery including a highly filled active material layer having a high density and containing a small amount of a conductive additive is provided. A secondary battery having high capacity per electrode volume is provided. The electrode includes an active material layer containing a plurality of particulate active materials and a plurality of fibrous carbon-containing compounds. Each of the carbon-containing compounds is a high molecular compound. A monomer of the high molecular compound contains at least one selected from thiophene, benzene, pyrrole, aniline, phenol, phthalocyanine, furan, azulene, and a derivative of any of these.

Coated positive electrode active material particles for a lithium-ion battery includes positive electrode active material particles; and a coating layer that contains a polymer coating compound and a conductive additive and at least partially covers a surface of the positive electrode active material particles, wherein a coverage of the positive electrode active material particles with the coating layer as determined by X-ray photoelectron spectroscopy is 65% to 96%.