Abstract: A method of preparing a FeMnCeOx biomaterial is provided, including the following steps. A Pseudomonas sp. strain KW-2 is obtained. A culture medium with a pH of 6.5-7.8 is prepared, which includes 0.1 g/L K2HPO4, 0.2 g/L MnSO4·7H2O, 0.2 g/L NaNO3, 0.1 g/L CaCl2), 0.1 g/L NH4Cl, 0.1 g/L (NH4)2CO3, 35 g/L NaCl and 150 mg/L ferric ammonium citrate. The culture medium is autoclaved, inoculated with the KW-2 strain, cultured for 1-3 days, added with a cerium nitrate solution, cultured for 3-7 days and centrifuged at 4,000-8,000 rpm for 10-20 min to collect a precipitate. The precipitate is rinsed 5-8 times with deionized water and 0.01 mol/L phosphate buffered saline (PBS) and freeze-dried at ?60° C. to obtain the FeMnCeOx biomaterial. A method for treating antibiotic wastewater using the FeMnCeOx biomaterial is also provided.

Abstract: Pseudomonas sp. strain KW-2.

Abstract: A battery includes a housing, a battery cell, and a first conductive member. The housing is provided with an accommodating cavity, and the battery cell is accommodated in the accommodating cavity. The first conductive member includes a first terminal part located outside the housing, and a first connecting part connected to the first terminal part and located inside the housing. The battery cell includes an electrode assembly and N first tabs protruding from the electrode assembly, where N is an integer greater than 1. The N first tabs are divided into M first tab groups. The first tab groups are mutually separately connected to one side of the first connecting part facing the electrode assembly. M is an integer greater than or equal to 1 and less than or equal to N.